annotate rust/hg-core/src/dirstate_tree/on_disk.rs @ 51700:7f0cb9ee0534

Backout accidental publication of a large range of revisions I accidentally published 25e7f9dcad0f::bd1483fd7088, this is the inverse.
author Raphaël Gomès <rgomes@octobus.net>
date Tue, 23 Jul 2024 10:02:46 +0200
parents 918ceb5a3d25
children ec7171748350
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //! The "version 2" disk representation of the dirstate
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2 //!
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3 //! See `mercurial/helptext/internals/dirstate-v2.txt`
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4
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5 use crate::dirstate::{DirstateV2Data, TruncatedTimestamp};
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6 use crate::dirstate_tree::dirstate_map::DirstateVersion;
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7 use crate::dirstate_tree::dirstate_map::{
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8 self, DirstateMap, DirstateMapWriteMode, NodeRef,
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9 };
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10 use crate::dirstate_tree::path_with_basename::WithBasename;
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11 use crate::errors::HgError;
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12 use crate::utils::hg_path::HgPath;
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13 use crate::DirstateEntry;
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14 use crate::DirstateError;
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15 use crate::DirstateParents;
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16 use bitflags::bitflags;
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17 use bytes_cast::unaligned::{U16Be, U32Be};
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18 use bytes_cast::BytesCast;
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19 use format_bytes::format_bytes;
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20 use rand::Rng;
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21 use std::borrow::Cow;
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22 use std::fmt::Write;
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23
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24 /// Added at the start of `.hg/dirstate` when the "v2" format is used.
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25 /// This a redundant sanity check more than an actual "magic number" since
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26 /// `.hg/requires` already governs which format should be used.
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27 pub const V2_FORMAT_MARKER: &[u8; 12] = b"dirstate-v2\n";
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28
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29 /// Keep space for 256-bit hashes
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30 const STORED_NODE_ID_BYTES: usize = 32;
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31
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32 /// … even though only 160 bits are used for now, with SHA-1
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33 const USED_NODE_ID_BYTES: usize = 20;
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34
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35 pub(super) const IGNORE_PATTERNS_HASH_LEN: usize = 20;
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36 pub(super) type IgnorePatternsHash = [u8; IGNORE_PATTERNS_HASH_LEN];
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37
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38 /// Must match constants of the same names in `mercurial/dirstateutils/v2.py`
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39 const TREE_METADATA_SIZE: usize = 44;
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40 const NODE_SIZE: usize = 44;
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41
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42 /// Make sure that size-affecting changes are made knowingly
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43 #[allow(unused)]
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44 fn static_assert_size_of() {
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45 let _ = std::mem::transmute::<TreeMetadata, [u8; TREE_METADATA_SIZE]>;
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46 let _ = std::mem::transmute::<DocketHeader, [u8; TREE_METADATA_SIZE + 81]>;
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47 let _ = std::mem::transmute::<Node, [u8; NODE_SIZE]>;
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48 }
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49
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50 // Must match `HEADER` in `mercurial/dirstateutils/docket.py`
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51 #[derive(BytesCast)]
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52 #[repr(C)]
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53 struct DocketHeader {
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54 marker: [u8; V2_FORMAT_MARKER.len()],
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55 parent_1: [u8; STORED_NODE_ID_BYTES],
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56 parent_2: [u8; STORED_NODE_ID_BYTES],
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57
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58 metadata: TreeMetadata,
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59
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60 /// Counted in bytes
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61 data_size: Size,
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62
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63 uuid_size: u8,
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64 }
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65
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66 pub struct Docket<'on_disk> {
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67 header: &'on_disk DocketHeader,
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68 pub uuid: &'on_disk [u8],
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69 }
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70
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71 /// Fields are documented in the *Tree metadata in the docket file*
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72 /// section of `mercurial/helptext/internals/dirstate-v2.txt`
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73 #[derive(BytesCast)]
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74 #[repr(C)]
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75 pub struct TreeMetadata {
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76 root_nodes: ChildNodes,
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77 nodes_with_entry_count: Size,
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78 nodes_with_copy_source_count: Size,
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79 unreachable_bytes: Size,
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80 unused: [u8; 4],
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81
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82 /// See *Optional hash of ignore patterns* section of
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83 /// `mercurial/helptext/internals/dirstate-v2.txt`
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84 ignore_patterns_hash: IgnorePatternsHash,
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85 }
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86
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87 /// Fields are documented in the *The data file format*
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88 /// section of `mercurial/helptext/internals/dirstate-v2.txt`
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89 #[derive(BytesCast, Debug)]
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90 #[repr(C)]
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91 pub(super) struct Node {
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92 full_path: PathSlice,
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93
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94 /// In bytes from `self.full_path.start`
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95 base_name_start: PathSize,
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96
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97 copy_source: OptPathSlice,
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98 children: ChildNodes,
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99 pub(super) descendants_with_entry_count: Size,
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100 pub(super) tracked_descendants_count: Size,
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101 flags: U16Be,
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102 size: U32Be,
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103 mtime: PackedTruncatedTimestamp,
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104 }
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105
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106 bitflags! {
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107 #[repr(C)]
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108 struct Flags: u16 {
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109 const WDIR_TRACKED = 1 << 0;
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110 const P1_TRACKED = 1 << 1;
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111 const P2_INFO = 1 << 2;
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112 const MODE_EXEC_PERM = 1 << 3;
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113 const MODE_IS_SYMLINK = 1 << 4;
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114 const HAS_FALLBACK_EXEC = 1 << 5;
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115 const FALLBACK_EXEC = 1 << 6;
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116 const HAS_FALLBACK_SYMLINK = 1 << 7;
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117 const FALLBACK_SYMLINK = 1 << 8;
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118 const EXPECTED_STATE_IS_MODIFIED = 1 << 9;
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119 const HAS_MODE_AND_SIZE = 1 <<10;
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120 const HAS_MTIME = 1 <<11;
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121 const MTIME_SECOND_AMBIGUOUS = 1 << 12;
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122 const DIRECTORY = 1 <<13;
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123 const ALL_UNKNOWN_RECORDED = 1 <<14;
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124 const ALL_IGNORED_RECORDED = 1 <<15;
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125 }
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126 }
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127
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128 /// Duration since the Unix epoch
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129 #[derive(BytesCast, Copy, Clone, Debug)]
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130 #[repr(C)]
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131 struct PackedTruncatedTimestamp {
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132 truncated_seconds: U32Be,
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133 nanoseconds: U32Be,
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134 }
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135
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136 /// Counted in bytes from the start of the file
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137 ///
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138 /// NOTE: not supporting `.hg/dirstate` files larger than 4 GiB.
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139 type Offset = U32Be;
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140
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141 /// Counted in number of items
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142 ///
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143 /// NOTE: we choose not to support counting more than 4 billion nodes anywhere.
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144 type Size = U32Be;
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145
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146 /// Counted in bytes
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147 ///
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148 /// NOTE: we choose not to support file names/paths longer than 64 KiB.
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149 type PathSize = U16Be;
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150
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151 /// A contiguous sequence of `len` times `Node`, representing the child nodes
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152 /// of either some other node or of the repository root.
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153 ///
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154 /// Always sorted by ascending `full_path`, to allow binary search.
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155 /// Since nodes with the same parent nodes also have the same parent path,
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156 /// only the `base_name`s need to be compared during binary search.
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157 #[derive(BytesCast, Copy, Clone, Debug)]
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158 #[repr(C)]
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159 struct ChildNodes {
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160 start: Offset,
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161 len: Size,
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162 }
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163
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164 /// A `HgPath` of `len` bytes
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165 #[derive(BytesCast, Copy, Clone, Debug)]
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166 #[repr(C)]
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167 struct PathSlice {
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168 start: Offset,
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169 len: PathSize,
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170 }
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171
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172 /// Either nothing if `start == 0`, or a `HgPath` of `len` bytes
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173 type OptPathSlice = PathSlice;
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174
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175 /// Unexpected file format found in `.hg/dirstate` with the "v2" format.
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176 ///
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177 /// This should only happen if Mercurial is buggy or a repository is corrupted.
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178 #[derive(Debug)]
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179 pub struct DirstateV2ParseError {
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180 message: String,
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181 }
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182
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183 impl DirstateV2ParseError {
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184 pub fn new<S: Into<String>>(message: S) -> Self {
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185 Self {
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186 message: message.into(),
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187 }
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188 }
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189 }
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190
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191 impl From<DirstateV2ParseError> for HgError {
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192 fn from(e: DirstateV2ParseError) -> Self {
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193 HgError::corrupted(format!("dirstate-v2 parse error: {}", e.message))
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194 }
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195 }
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196
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197 impl From<DirstateV2ParseError> for crate::DirstateError {
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198 fn from(error: DirstateV2ParseError) -> Self {
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199 HgError::from(error).into()
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200 }
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201 }
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202
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203 impl TreeMetadata {
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204 pub fn as_bytes(&self) -> &[u8] {
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205 BytesCast::as_bytes(self)
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206 }
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207 }
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208
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209 impl<'on_disk> Docket<'on_disk> {
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210 /// Generate the identifier for a new data file
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211 ///
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212 /// TODO: support the `HGTEST_UUIDFILE` environment variable.
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213 /// See `mercurial/revlogutils/docket.py`
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214 pub fn new_uid() -> String {
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215 const ID_LENGTH: usize = 8;
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216 let mut id = String::with_capacity(ID_LENGTH);
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217 let mut rng = rand::thread_rng();
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218 for _ in 0..ID_LENGTH {
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219 // One random hexadecimal digit.
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220 // `unwrap` never panics because `impl Write for String`
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221 // never returns an error.
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222 write!(&mut id, "{:x}", rng.gen_range(0..16)).unwrap();
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223 }
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224 id
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225 }
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226
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227 pub fn serialize(
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228 parents: DirstateParents,
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229 tree_metadata: TreeMetadata,
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230 data_size: u64,
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231 uuid: &[u8],
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232 ) -> Result<Vec<u8>, std::num::TryFromIntError> {
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233 let header = DocketHeader {
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234 marker: *V2_FORMAT_MARKER,
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235 parent_1: parents.p1.pad_to_256_bits(),
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236 parent_2: parents.p2.pad_to_256_bits(),
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237 metadata: tree_metadata,
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238 data_size: u32::try_from(data_size)?.into(),
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239 uuid_size: uuid.len().try_into()?,
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240 };
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241 let header = header.as_bytes();
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242 let mut docket = Vec::with_capacity(header.len() + uuid.len());
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243 docket.extend_from_slice(header);
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244 docket.extend_from_slice(uuid);
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245 Ok(docket)
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246 }
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247
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248 pub fn parents(&self) -> DirstateParents {
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249 use crate::Node;
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250 let p1 = Node::try_from(&self.header.parent_1[..USED_NODE_ID_BYTES])
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251 .unwrap();
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252 let p2 = Node::try_from(&self.header.parent_2[..USED_NODE_ID_BYTES])
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253 .unwrap();
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254 DirstateParents { p1, p2 }
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255 }
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256
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257 pub fn tree_metadata(&self) -> &[u8] {
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258 self.header.metadata.as_bytes()
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259 }
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260
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261 pub fn data_size(&self) -> usize {
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262 // This `unwrap` could only panic on a 16-bit CPU
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263 self.header.data_size.get().try_into().unwrap()
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264 }
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265
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266 pub fn data_filename(&self) -> String {
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267 String::from_utf8(format_bytes!(b"dirstate.{}", self.uuid)).unwrap()
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268 }
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269 }
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270
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271 pub fn read_docket(
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272 on_disk: &[u8],
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273 ) -> Result<Docket<'_>, DirstateV2ParseError> {
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274 let (header, uuid) = DocketHeader::from_bytes(on_disk).map_err(|e| {
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275 DirstateV2ParseError::new(format!("when reading docket, {}", e))
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276 })?;
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277 let uuid_size = header.uuid_size as usize;
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278 if header.marker == *V2_FORMAT_MARKER && uuid.len() == uuid_size {
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279 Ok(Docket { header, uuid })
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280 } else {
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281 Err(DirstateV2ParseError::new(
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282 "invalid format marker or uuid size",
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283 ))
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284 }
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285 }
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286
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287 pub(super) fn read<'on_disk>(
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288 on_disk: &'on_disk [u8],
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289 metadata: &[u8],
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290 uuid: Vec<u8>,
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291 identity: Option<u64>,
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292 ) -> Result<DirstateMap<'on_disk>, DirstateV2ParseError> {
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293 if on_disk.is_empty() {
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294 let mut map = DirstateMap::empty(on_disk);
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295 map.dirstate_version = DirstateVersion::V2;
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296 return Ok(map);
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297 }
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298 let (meta, _) = TreeMetadata::from_bytes(metadata).map_err(|e| {
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299 DirstateV2ParseError::new(format!("when parsing tree metadata, {}", e))
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300 })?;
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301 let dirstate_map = DirstateMap {
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302 on_disk,
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303 root: dirstate_map::ChildNodes::OnDisk(
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304 read_nodes(on_disk, meta.root_nodes).map_err(|mut e| {
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305 e.message = format!("{}, when reading root notes", e.message);
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306 e
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307 })?,
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308 ),
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309 nodes_with_entry_count: meta.nodes_with_entry_count.get(),
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310 nodes_with_copy_source_count: meta.nodes_with_copy_source_count.get(),
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311 ignore_patterns_hash: meta.ignore_patterns_hash,
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diff changeset
312 unreachable_bytes: meta.unreachable_bytes.get(),
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diff changeset
313 old_data_size: on_disk.len(),
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314 old_uuid: Some(uuid),
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315 identity,
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316 dirstate_version: DirstateVersion::V2,
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317 write_mode: DirstateMapWriteMode::Auto,
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318 };
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319 Ok(dirstate_map)
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320 }
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321
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322 impl Node {
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323 pub(super) fn full_path<'on_disk>(
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324 &self,
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325 on_disk: &'on_disk [u8],
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326 ) -> Result<&'on_disk HgPath, DirstateV2ParseError> {
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327 read_hg_path(on_disk, self.full_path)
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328 }
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329
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330 pub(super) fn base_name_start(
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diff changeset
331 &self,
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332 ) -> Result<usize, DirstateV2ParseError> {
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diff changeset
333 let start = self.base_name_start.get();
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diff changeset
334 if start < self.full_path.len.get() {
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335 let start = usize::try_from(start)
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336 // u32 -> usize, could only panic on a 16-bit CPU
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337 .expect("dirstate-v2 base_name_start out of bounds");
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338 Ok(start)
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339 } else {
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340 Err(DirstateV2ParseError::new("not enough bytes for base name"))
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341 }
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342 }
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diff changeset
343
47337
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
344 pub(super) fn base_name<'on_disk>(
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
345 &self,
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
346 on_disk: &'on_disk [u8],
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
347 ) -> Result<&'on_disk HgPath, DirstateV2ParseError> {
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
348 let full_path = self.full_path(on_disk)?;
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
349 let base_name_start = self.base_name_start()?;
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
350 Ok(HgPath::new(&full_path.as_bytes()[base_name_start..]))
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
351 }
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
352
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
353 pub(super) fn path<'on_disk>(
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
354 &self,
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
355 on_disk: &'on_disk [u8],
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
356 ) -> Result<dirstate_map::NodeKey<'on_disk>, DirstateV2ParseError> {
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
357 Ok(WithBasename::from_raw_parts(
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
358 Cow::Borrowed(self.full_path(on_disk)?),
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
359 self.base_name_start()?,
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
360 ))
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
361 }
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
362
49930
e98fd81bb151 rust-clippy: fix most warnings in `hg-core`
Raphaël Gomès <rgomes@octobus.net>
parents: 49631
diff changeset
363 pub(super) fn has_copy_source(&self) -> bool {
47337
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
364 self.copy_source.start.get() != 0
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
365 }
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
366
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
367 pub(super) fn copy_source<'on_disk>(
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
368 &self,
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
369 on_disk: &'on_disk [u8],
47337
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
370 ) -> Result<Option<&'on_disk HgPath>, DirstateV2ParseError> {
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
371 Ok(if self.has_copy_source() {
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
372 Some(read_hg_path(on_disk, self.copy_source)?)
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
373 } else {
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
374 None
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
375 })
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
376 }
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
377
48231
0524c1359bfc dirstate-v2: Extend node flags to 16 bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48221
diff changeset
378 fn flags(&self) -> Flags {
0524c1359bfc dirstate-v2: Extend node flags to 16 bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48221
diff changeset
379 Flags::from_bits_truncate(self.flags.get())
0524c1359bfc dirstate-v2: Extend node flags to 16 bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48221
diff changeset
380 }
0524c1359bfc dirstate-v2: Extend node flags to 16 bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48221
diff changeset
381
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
382 fn has_entry(&self) -> bool {
48231
0524c1359bfc dirstate-v2: Extend node flags to 16 bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48221
diff changeset
383 self.flags().intersects(
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
384 Flags::WDIR_TRACKED | Flags::P1_TRACKED | Flags::P2_INFO,
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
385 )
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
386 }
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
387
47348
a4de570e61fa dirstate-v2: Allow tree nodes without an entry to store a timestamp
Simon Sapin <simon.sapin@octobus.net>
parents: 47337
diff changeset
388 pub(super) fn node_data(
a4de570e61fa dirstate-v2: Allow tree nodes without an entry to store a timestamp
Simon Sapin <simon.sapin@octobus.net>
parents: 47337
diff changeset
389 &self,
a4de570e61fa dirstate-v2: Allow tree nodes without an entry to store a timestamp
Simon Sapin <simon.sapin@octobus.net>
parents: 47337
diff changeset
390 ) -> Result<dirstate_map::NodeData, DirstateV2ParseError> {
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
391 if self.has_entry() {
48260
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48254
diff changeset
392 Ok(dirstate_map::NodeData::Entry(self.assume_entry()?))
48193
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
393 } else if let Some(mtime) = self.cached_directory_mtime()? {
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
394 Ok(dirstate_map::NodeData::CachedDirectory { mtime })
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
395 } else {
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
396 Ok(dirstate_map::NodeData::None)
47348
a4de570e61fa dirstate-v2: Allow tree nodes without an entry to store a timestamp
Simon Sapin <simon.sapin@octobus.net>
parents: 47337
diff changeset
397 }
47337
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
398 }
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
399
48193
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
400 pub(super) fn cached_directory_mtime(
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
401 &self,
320de901896a dirstate-v2: Truncate directory mtimes to 31 bits of seconds
Simon Sapin <simon.sapin@octobus.net>
parents: 48192
diff changeset
402 ) -> Result<Option<TruncatedTimestamp>, DirstateV2ParseError> {
48264
bb240915f69f dirstate-v2: adjust the meaning of directory flags
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
403 // For now we do not have code to handle the absence of
bb240915f69f dirstate-v2: adjust the meaning of directory flags
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
404 // ALL_UNKNOWN_RECORDED, so we ignore the mtime if the flag is
bb240915f69f dirstate-v2: adjust the meaning of directory flags
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
405 // unset.
bb240915f69f dirstate-v2: adjust the meaning of directory flags
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
406 if self.flags().contains(Flags::DIRECTORY)
bb240915f69f dirstate-v2: adjust the meaning of directory flags
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
407 && self.flags().contains(Flags::HAS_MTIME)
48251
dfc5a505ddc5 dirstate-v2: adds two flag to track the presence of some unrecorded files
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48250
diff changeset
408 && self.flags().contains(Flags::ALL_UNKNOWN_RECORDED)
dfc5a505ddc5 dirstate-v2: adds two flag to track the presence of some unrecorded files
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48250
diff changeset
409 {
48501
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
410 Ok(Some(self.mtime()?))
48232
f7fd629ffb98 dirstate-v2: Separate HAS_FILE_MTIME and HAS_DIRECTORY_MTIME flags
Simon Sapin <simon.sapin@octobus.net>
parents: 48231
diff changeset
411 } else {
f7fd629ffb98 dirstate-v2: Separate HAS_FILE_MTIME and HAS_DIRECTORY_MTIME flags
Simon Sapin <simon.sapin@octobus.net>
parents: 48231
diff changeset
412 Ok(None)
f7fd629ffb98 dirstate-v2: Separate HAS_FILE_MTIME and HAS_DIRECTORY_MTIME flags
Simon Sapin <simon.sapin@octobus.net>
parents: 48231
diff changeset
413 }
47349
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47348
diff changeset
414 }
7138c863d0a1 dirstate-v2: Skip readdir in status based on directory mtime
Simon Sapin <simon.sapin@octobus.net>
parents: 47348
diff changeset
415
48195
4d5a13253d34 dirstate-v2: Replace the 32-bit `mode` field with two bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48194
diff changeset
416 fn synthesize_unix_mode(&self) -> u32 {
51119
d58e754f2db0 rust-clippy: ignore clippy's recommendation for "useless" cast
Raphaël Gomès <rgomes@octobus.net>
parents: 50274
diff changeset
417 // Some platforms' libc don't have the same type (MacOS uses i32 here)
d58e754f2db0 rust-clippy: ignore clippy's recommendation for "useless" cast
Raphaël Gomès <rgomes@octobus.net>
parents: 50274
diff changeset
418 #[allow(clippy::unnecessary_cast)]
48231
0524c1359bfc dirstate-v2: Extend node flags to 16 bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48221
diff changeset
419 let file_type = if self.flags().contains(Flags::MODE_IS_SYMLINK) {
50274
0cc19a53cef4 rust: fix building on macOS (issue6801)
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 50252
diff changeset
420 libc::S_IFLNK as u32
48195
4d5a13253d34 dirstate-v2: Replace the 32-bit `mode` field with two bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48194
diff changeset
421 } else {
50274
0cc19a53cef4 rust: fix building on macOS (issue6801)
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 50252
diff changeset
422 libc::S_IFREG as u32
48195
4d5a13253d34 dirstate-v2: Replace the 32-bit `mode` field with two bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48194
diff changeset
423 };
49930
e98fd81bb151 rust-clippy: fix most warnings in `hg-core`
Raphaël Gomès <rgomes@octobus.net>
parents: 49631
diff changeset
424 let permissions = if self.flags().contains(Flags::MODE_EXEC_PERM) {
48195
4d5a13253d34 dirstate-v2: Replace the 32-bit `mode` field with two bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48194
diff changeset
425 0o755
4d5a13253d34 dirstate-v2: Replace the 32-bit `mode` field with two bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48194
diff changeset
426 } else {
4d5a13253d34 dirstate-v2: Replace the 32-bit `mode` field with two bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48194
diff changeset
427 0o644
4d5a13253d34 dirstate-v2: Replace the 32-bit `mode` field with two bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48194
diff changeset
428 };
49930
e98fd81bb151 rust-clippy: fix most warnings in `hg-core`
Raphaël Gomès <rgomes@octobus.net>
parents: 49631
diff changeset
429 file_type | permissions
48195
4d5a13253d34 dirstate-v2: Replace the 32-bit `mode` field with two bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48194
diff changeset
430 }
4d5a13253d34 dirstate-v2: Replace the 32-bit `mode` field with two bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48194
diff changeset
431
48501
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
432 fn mtime(&self) -> Result<TruncatedTimestamp, DirstateV2ParseError> {
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
433 let mut m: TruncatedTimestamp = self.mtime.try_into()?;
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
434 if self.flags().contains(Flags::MTIME_SECOND_AMBIGUOUS) {
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
435 m.second_ambiguous = true;
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
436 }
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
437 Ok(m)
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
438 }
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
439
48260
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48254
diff changeset
440 fn assume_entry(&self) -> Result<DirstateEntry, DirstateV2ParseError> {
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
441 // TODO: convert through raw bits instead?
49100
38e5bb1425dd rust-dirstate: introduce intermediate struct for dirstate-v2 data
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
442 let wc_tracked = self.flags().contains(Flags::WDIR_TRACKED);
48231
0524c1359bfc dirstate-v2: Extend node flags to 16 bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48221
diff changeset
443 let p1_tracked = self.flags().contains(Flags::P1_TRACKED);
0524c1359bfc dirstate-v2: Extend node flags to 16 bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48221
diff changeset
444 let p2_info = self.flags().contains(Flags::P2_INFO);
48250
1730b2fceaa1 dirstate-v2: adds a flag to mark a file as modified
Simon Sapin <simon.sapin@octobus.net>
parents: 48232
diff changeset
445 let mode_size = if self.flags().contains(Flags::HAS_MODE_AND_SIZE)
1730b2fceaa1 dirstate-v2: adds a flag to mark a file as modified
Simon Sapin <simon.sapin@octobus.net>
parents: 48232
diff changeset
446 && !self.flags().contains(Flags::EXPECTED_STATE_IS_MODIFIED)
1730b2fceaa1 dirstate-v2: adds a flag to mark a file as modified
Simon Sapin <simon.sapin@octobus.net>
parents: 48232
diff changeset
447 {
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
448 Some((self.synthesize_unix_mode(), self.size.into()))
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
449 } else {
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
450 None
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
451 };
48264
bb240915f69f dirstate-v2: adjust the meaning of directory flags
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
452 let mtime = if self.flags().contains(Flags::HAS_MTIME)
bb240915f69f dirstate-v2: adjust the meaning of directory flags
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
453 && !self.flags().contains(Flags::DIRECTORY)
48250
1730b2fceaa1 dirstate-v2: adds a flag to mark a file as modified
Simon Sapin <simon.sapin@octobus.net>
parents: 48232
diff changeset
454 && !self.flags().contains(Flags::EXPECTED_STATE_IS_MODIFIED)
1730b2fceaa1 dirstate-v2: adds a flag to mark a file as modified
Simon Sapin <simon.sapin@octobus.net>
parents: 48232
diff changeset
455 {
48501
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
456 Some(self.mtime()?)
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
457 } else {
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
458 None
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
459 };
48265
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
460 let fallback_exec = if self.flags().contains(Flags::HAS_FALLBACK_EXEC)
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
461 {
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
462 Some(self.flags().contains(Flags::FALLBACK_EXEC))
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
463 } else {
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
464 None
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
465 };
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
466 let fallback_symlink =
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
467 if self.flags().contains(Flags::HAS_FALLBACK_SYMLINK) {
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
468 Some(self.flags().contains(Flags::FALLBACK_SYMLINK))
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
469 } else {
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
470 None
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
471 };
49100
38e5bb1425dd rust-dirstate: introduce intermediate struct for dirstate-v2 data
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
472 Ok(DirstateEntry::from_v2_data(DirstateV2Data {
38e5bb1425dd rust-dirstate: introduce intermediate struct for dirstate-v2 data
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
473 wc_tracked,
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
474 p1_tracked,
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
475 p2_info,
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
476 mode_size,
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
477 mtime,
48265
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
478 fallback_exec,
3861e3f6ad54 dirstate-v2: read the fallback value in Rust
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48264
diff changeset
479 fallback_symlink,
49100
38e5bb1425dd rust-dirstate: introduce intermediate struct for dirstate-v2 data
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
480 }))
47337
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
481 }
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
482
47334
18b3060fe598 dirstate-v2: Add a zero-size error type for dirstate v2 parse errors
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
483 pub(super) fn entry(
18b3060fe598 dirstate-v2: Add a zero-size error type for dirstate v2 parse errors
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
484 &self,
18b3060fe598 dirstate-v2: Add a zero-size error type for dirstate v2 parse errors
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
485 ) -> Result<Option<DirstateEntry>, DirstateV2ParseError> {
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
486 if self.has_entry() {
48260
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48254
diff changeset
487 Ok(Some(self.assume_entry()?))
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
488 } else {
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
489 Ok(None)
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
490 }
47337
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
491 }
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
492
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
493 pub(super) fn children<'on_disk>(
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
494 &self,
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
495 on_disk: &'on_disk [u8],
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
496 ) -> Result<&'on_disk [Node], DirstateV2ParseError> {
47677
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
497 read_nodes(on_disk, self.children)
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
498 }
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
499
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
500 pub(super) fn to_in_memory_node<'on_disk>(
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
501 &self,
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
502 on_disk: &'on_disk [u8],
47334
18b3060fe598 dirstate-v2: Add a zero-size error type for dirstate v2 parse errors
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
503 ) -> Result<dirstate_map::Node<'on_disk>, DirstateV2ParseError> {
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
504 Ok(dirstate_map::Node {
47337
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
505 children: dirstate_map::ChildNodes::OnDisk(
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
506 self.children(on_disk)?,
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
507 ),
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
508 copy_source: self.copy_source(on_disk)?.map(Cow::Borrowed),
47348
a4de570e61fa dirstate-v2: Allow tree nodes without an entry to store a timestamp
Simon Sapin <simon.sapin@octobus.net>
parents: 47337
diff changeset
509 data: self.node_data()?,
47478
ca8121d26732 dirstate-tree: Keep a counter of descendant nodes that have an entry
Simon Sapin <simon.sapin@octobus.net>
parents: 47476
diff changeset
510 descendants_with_entry_count: self
ca8121d26732 dirstate-tree: Keep a counter of descendant nodes that have an entry
Simon Sapin <simon.sapin@octobus.net>
parents: 47476
diff changeset
511 .descendants_with_entry_count
ca8121d26732 dirstate-tree: Keep a counter of descendant nodes that have an entry
Simon Sapin <simon.sapin@octobus.net>
parents: 47476
diff changeset
512 .get(),
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
513 tracked_descendants_count: self.tracked_descendants_count.get(),
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
514 })
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
515 }
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
516
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
517 fn from_dirstate_entry(
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
518 entry: &DirstateEntry,
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
519 ) -> (Flags, U32Be, PackedTruncatedTimestamp) {
49100
38e5bb1425dd rust-dirstate: introduce intermediate struct for dirstate-v2 data
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
520 let DirstateV2Data {
38e5bb1425dd rust-dirstate: introduce intermediate struct for dirstate-v2 data
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
521 wc_tracked,
48254
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
522 p1_tracked,
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
523 p2_info,
49100
38e5bb1425dd rust-dirstate: introduce intermediate struct for dirstate-v2 data
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
524 mode_size: mode_size_opt,
38e5bb1425dd rust-dirstate: introduce intermediate struct for dirstate-v2 data
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
525 mtime: mtime_opt,
48254
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
526 fallback_exec,
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
527 fallback_symlink,
49100
38e5bb1425dd rust-dirstate: introduce intermediate struct for dirstate-v2 data
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
528 } = entry.v2_data();
38e5bb1425dd rust-dirstate: introduce intermediate struct for dirstate-v2 data
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
529 // TODO: convert through raw flag bits instead?
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
530 let mut flags = Flags::empty();
49100
38e5bb1425dd rust-dirstate: introduce intermediate struct for dirstate-v2 data
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
531 flags.set(Flags::WDIR_TRACKED, wc_tracked);
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
532 flags.set(Flags::P1_TRACKED, p1_tracked);
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
533 flags.set(Flags::P2_INFO, p2_info);
51119
d58e754f2db0 rust-clippy: ignore clippy's recommendation for "useless" cast
Raphaël Gomès <rgomes@octobus.net>
parents: 50274
diff changeset
534 // Some platforms' libc don't have the same type (MacOS uses i32 here)
d58e754f2db0 rust-clippy: ignore clippy's recommendation for "useless" cast
Raphaël Gomès <rgomes@octobus.net>
parents: 50274
diff changeset
535 #[allow(clippy::unnecessary_cast)]
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
536 let size = if let Some((m, s)) = mode_size_opt {
48568
440972d2175d rust: fix build errors on darwin
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 48266
diff changeset
537 let exec_perm = m & (libc::S_IXUSR as u32) != 0;
440972d2175d rust: fix build errors on darwin
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 48266
diff changeset
538 let is_symlink = m & (libc::S_IFMT as u32) == libc::S_IFLNK as u32;
48195
4d5a13253d34 dirstate-v2: Replace the 32-bit `mode` field with two bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48194
diff changeset
539 flags.set(Flags::MODE_EXEC_PERM, exec_perm);
4d5a13253d34 dirstate-v2: Replace the 32-bit `mode` field with two bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48194
diff changeset
540 flags.set(Flags::MODE_IS_SYMLINK, is_symlink);
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
541 flags.insert(Flags::HAS_MODE_AND_SIZE);
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
542 s.into()
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
543 } else {
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
544 0.into()
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
545 };
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
546 let mtime = if let Some(m) = mtime_opt {
48264
bb240915f69f dirstate-v2: adjust the meaning of directory flags
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
547 flags.insert(Flags::HAS_MTIME);
48401
995aaacb12d7 dirstate-item: make sure we set the mtime-second-ambiguous on v2 write
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48398
diff changeset
548 if m.second_ambiguous {
995aaacb12d7 dirstate-item: make sure we set the mtime-second-ambiguous on v2 write
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48398
diff changeset
549 flags.insert(Flags::MTIME_SECOND_AMBIGUOUS);
995aaacb12d7 dirstate-item: make sure we set the mtime-second-ambiguous on v2 write
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48398
diff changeset
550 };
48260
269ff8978086 dirstate: store mtimes with nanosecond precision in memory
Simon Sapin <simon.sapin@octobus.net>
parents: 48254
diff changeset
551 m.into()
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
552 } else {
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
553 PackedTruncatedTimestamp::null()
48192
d2f760c2c91c dirstate-v2: Separate Rust structs for Timestamp and PackedTimestamp
Simon Sapin <simon.sapin@octobus.net>
parents: 48191
diff changeset
554 };
48254
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
555 if let Some(f_exec) = fallback_exec {
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
556 flags.insert(Flags::HAS_FALLBACK_EXEC);
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
557 if f_exec {
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
558 flags.insert(Flags::FALLBACK_EXEC);
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
559 }
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
560 }
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
561 if let Some(f_symlink) = fallback_symlink {
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
562 flags.insert(Flags::HAS_FALLBACK_SYMLINK);
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
563 if f_symlink {
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
564 flags.insert(Flags::FALLBACK_SYMLINK);
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
565 }
b874e8d81a98 dirstate-v2: preserve the fallback values on disk
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48253
diff changeset
566 }
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
567 (flags, size, mtime)
47348
a4de570e61fa dirstate-v2: Allow tree nodes without an entry to store a timestamp
Simon Sapin <simon.sapin@octobus.net>
parents: 47337
diff changeset
568 }
a4de570e61fa dirstate-v2: Allow tree nodes without an entry to store a timestamp
Simon Sapin <simon.sapin@octobus.net>
parents: 47337
diff changeset
569 }
a4de570e61fa dirstate-v2: Allow tree nodes without an entry to store a timestamp
Simon Sapin <simon.sapin@octobus.net>
parents: 47337
diff changeset
570
47334
18b3060fe598 dirstate-v2: Add a zero-size error type for dirstate v2 parse errors
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
571 fn read_hg_path(
18b3060fe598 dirstate-v2: Add a zero-size error type for dirstate v2 parse errors
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
572 on_disk: &[u8],
47677
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
573 slice: PathSlice,
47337
0654b3b3d2b5 dirstate-v2: Parse the dirstate lazily, with copy-on-write nodes
Simon Sapin <simon.sapin@octobus.net>
parents: 47336
diff changeset
574 ) -> Result<&HgPath, DirstateV2ParseError> {
47677
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
575 read_slice(on_disk, slice.start, slice.len.get()).map(HgPath::new)
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
576 }
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
577
47677
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
578 fn read_nodes(
47334
18b3060fe598 dirstate-v2: Add a zero-size error type for dirstate v2 parse errors
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
579 on_disk: &[u8],
47677
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
580 slice: ChildNodes,
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
581 ) -> Result<&[Node], DirstateV2ParseError> {
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
582 read_slice(on_disk, slice.start, slice.len.get())
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
583 }
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
584
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
585 fn read_slice<T, Len>(
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
586 on_disk: &[u8],
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
587 start: Offset,
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
588 len: Len,
47334
18b3060fe598 dirstate-v2: Add a zero-size error type for dirstate v2 parse errors
Simon Sapin <simon.sapin@octobus.net>
parents: 47333
diff changeset
589 ) -> Result<&[T], DirstateV2ParseError>
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
590 where
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
591 T: BytesCast,
47677
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
592 Len: TryInto<usize>,
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
593 {
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
594 // Either `usize::MAX` would result in "out of bounds" error since a single
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
595 // `&[u8]` cannot occupy the entire addess space.
51700
7f0cb9ee0534 Backout accidental publication of a large range of revisions
Raphaël Gomès <rgomes@octobus.net>
parents: 51693
diff changeset
596 let start = start.get().try_into().unwrap_or(std::usize::MAX);
7f0cb9ee0534 Backout accidental publication of a large range of revisions
Raphaël Gomès <rgomes@octobus.net>
parents: 51693
diff changeset
597 let len = len.try_into().unwrap_or(std::usize::MAX);
49373
f8ec7b16c98f rust: add message to `DirstateV2ParseError` to give some context
Raphaël Gomès <rgomes@octobus.net>
parents: 49365
diff changeset
598 let bytes = match on_disk.get(start..) {
f8ec7b16c98f rust: add message to `DirstateV2ParseError` to give some context
Raphaël Gomès <rgomes@octobus.net>
parents: 49365
diff changeset
599 Some(bytes) => bytes,
f8ec7b16c98f rust: add message to `DirstateV2ParseError` to give some context
Raphaël Gomès <rgomes@octobus.net>
parents: 49365
diff changeset
600 None => {
f8ec7b16c98f rust: add message to `DirstateV2ParseError` to give some context
Raphaël Gomès <rgomes@octobus.net>
parents: 49365
diff changeset
601 return Err(DirstateV2ParseError::new(
f8ec7b16c98f rust: add message to `DirstateV2ParseError` to give some context
Raphaël Gomès <rgomes@octobus.net>
parents: 49365
diff changeset
602 "not enough bytes from disk",
f8ec7b16c98f rust: add message to `DirstateV2ParseError` to give some context
Raphaël Gomès <rgomes@octobus.net>
parents: 49365
diff changeset
603 ))
f8ec7b16c98f rust: add message to `DirstateV2ParseError` to give some context
Raphaël Gomès <rgomes@octobus.net>
parents: 49365
diff changeset
604 }
f8ec7b16c98f rust: add message to `DirstateV2ParseError` to give some context
Raphaël Gomès <rgomes@octobus.net>
parents: 49365
diff changeset
605 };
f8ec7b16c98f rust: add message to `DirstateV2ParseError` to give some context
Raphaël Gomès <rgomes@octobus.net>
parents: 49365
diff changeset
606 T::slice_from_bytes(bytes, len)
f8ec7b16c98f rust: add message to `DirstateV2ParseError` to give some context
Raphaël Gomès <rgomes@octobus.net>
parents: 49365
diff changeset
607 .map_err(|e| {
f8ec7b16c98f rust: add message to `DirstateV2ParseError` to give some context
Raphaël Gomès <rgomes@octobus.net>
parents: 49365
diff changeset
608 DirstateV2ParseError::new(format!("when reading a slice, {}", e))
f8ec7b16c98f rust: add message to `DirstateV2ParseError` to give some context
Raphaël Gomès <rgomes@octobus.net>
parents: 49365
diff changeset
609 })
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
610 .map(|(slice, _rest)| slice)
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
611 }
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
612
47682
78f7f0d490ee dirstate-v2: Move fixed-size tree metadata into the docket file
Simon Sapin <simon.sapin@octobus.net>
parents: 47681
diff changeset
613 /// Returns new data and metadata, together with whether that data should be
78f7f0d490ee dirstate-v2: Move fixed-size tree metadata into the docket file
Simon Sapin <simon.sapin@octobus.net>
parents: 47681
diff changeset
614 /// appended to the existing data file whose content is at
78f7f0d490ee dirstate-v2: Move fixed-size tree metadata into the docket file
Simon Sapin <simon.sapin@octobus.net>
parents: 47681
diff changeset
615 /// `dirstate_map.on_disk` (true), instead of written to a new data file
49145
dd2503a63d33 rust-dirstate-v2: save proper data size if no new data on append
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
616 /// (false), and the previous size of data on disk.
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
617 pub(super) fn write(
48416
c1b633db67fc rust: Serializing a DirstateMap does not mutate it anymore
Simon Sapin <simon.sapin@octobus.net>
parents: 48402
diff changeset
618 dirstate_map: &DirstateMap,
50221
1891086f6c7f dirstate: use more than a bool to control append behavior
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 50179
diff changeset
619 write_mode: DirstateMapWriteMode,
49145
dd2503a63d33 rust-dirstate-v2: save proper data size if no new data on append
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
620 ) -> Result<(Vec<u8>, TreeMetadata, bool, usize), DirstateError> {
50221
1891086f6c7f dirstate: use more than a bool to control append behavior
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 50179
diff changeset
621 let append = match write_mode {
1891086f6c7f dirstate: use more than a bool to control append behavior
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 50179
diff changeset
622 DirstateMapWriteMode::Auto => dirstate_map.write_should_append(),
1891086f6c7f dirstate: use more than a bool to control append behavior
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 50179
diff changeset
623 DirstateMapWriteMode::ForceNewDataFile => false,
50222
ecd28d89c29e dirstate-v2: add devel config option to control write behavior
Raphaël Gomès <rgomes@octobus.net>
parents: 50221
diff changeset
624 DirstateMapWriteMode::ForceAppend => true,
50221
1891086f6c7f dirstate: use more than a bool to control append behavior
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 50179
diff changeset
625 };
50179
f2e13d8d30e0 rust-dirstate: trace append/no append to help debugging
Raphaël Gomès <rgomes@octobus.net>
parents: 49373
diff changeset
626 if append {
f2e13d8d30e0 rust-dirstate: trace append/no append to help debugging
Raphaël Gomès <rgomes@octobus.net>
parents: 49373
diff changeset
627 log::trace!("appending to the dirstate data file");
f2e13d8d30e0 rust-dirstate: trace append/no append to help debugging
Raphaël Gomès <rgomes@octobus.net>
parents: 49373
diff changeset
628 } else {
f2e13d8d30e0 rust-dirstate: trace append/no append to help debugging
Raphaël Gomès <rgomes@octobus.net>
parents: 49373
diff changeset
629 log::trace!("creating new dirstate data file");
f2e13d8d30e0 rust-dirstate: trace append/no append to help debugging
Raphaël Gomès <rgomes@octobus.net>
parents: 49373
diff changeset
630 }
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
631
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
632 // This ignores the space for paths, and for nodes without an entry.
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
633 // TODO: better estimate? Skip the `Vec` and write to a file directly?
47682
78f7f0d490ee dirstate-v2: Move fixed-size tree metadata into the docket file
Simon Sapin <simon.sapin@octobus.net>
parents: 47681
diff changeset
634 let size_guess = std::mem::size_of::<Node>()
78f7f0d490ee dirstate-v2: Move fixed-size tree metadata into the docket file
Simon Sapin <simon.sapin@octobus.net>
parents: 47681
diff changeset
635 * dirstate_map.nodes_with_entry_count as usize;
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
636
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
637 let mut writer = Writer {
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
638 dirstate_map,
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
639 append,
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
640 out: Vec::with_capacity(size_guess),
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
641 };
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
642
51617
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
643 let root_nodes = dirstate_map.root.as_ref();
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
644 for node in root_nodes.iter() {
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
645 // Catch some corruptions before we write to disk
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
646 let full_path = node.full_path(dirstate_map.on_disk)?;
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
647 let base_name = node.base_name(dirstate_map.on_disk)?;
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
648 if full_path != base_name {
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
649 let explanation = format!(
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
650 "Dirstate root node '{}' is not at the root",
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
651 full_path
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
652 );
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
653 return Err(HgError::corrupted(explanation).into());
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
654 }
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
655 }
f808fa119212 dirstate-v2: check that root nodes are at the root before writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51616
diff changeset
656 let root_nodes = writer.write_nodes(root_nodes)?;
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
657
49156
09984dc70352 rust-dirstate-v2: fix the unused bytes counter when rewriting the dirstate
Raphaël Gomès <rgomes@octobus.net>
parents: 49145
diff changeset
658 let unreachable_bytes = if append {
09984dc70352 rust-dirstate-v2: fix the unused bytes counter when rewriting the dirstate
Raphaël Gomès <rgomes@octobus.net>
parents: 49145
diff changeset
659 dirstate_map.unreachable_bytes
09984dc70352 rust-dirstate-v2: fix the unused bytes counter when rewriting the dirstate
Raphaël Gomès <rgomes@octobus.net>
parents: 49145
diff changeset
660 } else {
09984dc70352 rust-dirstate-v2: fix the unused bytes counter when rewriting the dirstate
Raphaël Gomès <rgomes@octobus.net>
parents: 49145
diff changeset
661 0
09984dc70352 rust-dirstate-v2: fix the unused bytes counter when rewriting the dirstate
Raphaël Gomès <rgomes@octobus.net>
parents: 49145
diff changeset
662 };
47682
78f7f0d490ee dirstate-v2: Move fixed-size tree metadata into the docket file
Simon Sapin <simon.sapin@octobus.net>
parents: 47681
diff changeset
663 let meta = TreeMetadata {
47676
096ee2e260a3 dirstate-v2: Rename Header to Root, move it to the end of the data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47675
diff changeset
664 root_nodes,
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
665 nodes_with_entry_count: dirstate_map.nodes_with_entry_count.into(),
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
666 nodes_with_copy_source_count: dirstate_map
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
667 .nodes_with_copy_source_count
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
668 .into(),
49156
09984dc70352 rust-dirstate-v2: fix the unused bytes counter when rewriting the dirstate
Raphaël Gomès <rgomes@octobus.net>
parents: 49145
diff changeset
669 unreachable_bytes: unreachable_bytes.into(),
47684
852262e2e7d9 dirstate-v2: Reserve a few bytes of space for future extensions
Simon Sapin <simon.sapin@octobus.net>
parents: 47682
diff changeset
670 unused: [0; 4],
47409
0ef8231e413f dirstate-v2: Store a hash of ignore patterns (.hgignore)
Simon Sapin <simon.sapin@octobus.net>
parents: 47374
diff changeset
671 ignore_patterns_hash: dirstate_map.ignore_patterns_hash,
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
672 };
49145
dd2503a63d33 rust-dirstate-v2: save proper data size if no new data on append
Raphaël Gomès <rgomes@octobus.net>
parents: 48569
diff changeset
673 Ok((writer.out, meta, append, dirstate_map.old_data_size))
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
674 }
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
675
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
676 struct Writer<'dmap, 'on_disk> {
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
677 dirstate_map: &'dmap DirstateMap<'on_disk>,
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
678 append: bool,
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
679 out: Vec<u8>,
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
680 }
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
681
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
682 impl Writer<'_, '_> {
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
683 fn write_nodes(
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
684 &mut self,
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
685 nodes: dirstate_map::ChildNodesRef,
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
686 ) -> Result<ChildNodes, DirstateError> {
47679
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
687 // Reuse already-written nodes if possible
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
688 if self.append {
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
689 if let dirstate_map::ChildNodesRef::OnDisk(nodes_slice) = nodes {
47680
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
690 let start = self.on_disk_offset_of(nodes_slice).expect(
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
691 "dirstate-v2 OnDisk nodes not found within on_disk",
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
692 );
47679
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
693 let len = child_nodes_len_from_usize(nodes_slice.len());
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
694 return Ok(ChildNodes { start, len });
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
695 }
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
696 }
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
697
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
698 // `dirstate_map::ChildNodes::InMemory` contains a `HashMap` which has
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
699 // undefined iteration order. Sort to enable binary search in the
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
700 // written file.
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
701 let nodes = nodes.sorted();
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
702 let nodes_len = nodes.len();
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
703
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
704 // First accumulate serialized nodes in a `Vec`
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
705 let mut on_disk_nodes = Vec::with_capacity(nodes_len);
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
706 for node in nodes {
51616
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
707 let children = node.children(self.dirstate_map.on_disk)?;
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
708 let full_path = node.full_path(self.dirstate_map.on_disk)?;
51616
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
709 self.check_children(&children, full_path)?;
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
710
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
711 let children = self.write_nodes(children)?;
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
712 let full_path = self.write_path(full_path.as_bytes());
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
713 let copy_source = if let Some(source) =
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
714 node.copy_source(self.dirstate_map.on_disk)?
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
715 {
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
716 self.write_path(source.as_bytes())
47336
8d0260d0dbc9 dirstate-v2: Make the dirstate bytes buffer available in more places
Simon Sapin <simon.sapin@octobus.net>
parents: 47335
diff changeset
717 } else {
47677
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
718 PathSlice {
47336
8d0260d0dbc9 dirstate-v2: Make the dirstate bytes buffer available in more places
Simon Sapin <simon.sapin@octobus.net>
parents: 47335
diff changeset
719 start: 0.into(),
8d0260d0dbc9 dirstate-v2: Make the dirstate bytes buffer available in more places
Simon Sapin <simon.sapin@octobus.net>
parents: 47335
diff changeset
720 len: 0.into(),
8d0260d0dbc9 dirstate-v2: Make the dirstate bytes buffer available in more places
Simon Sapin <simon.sapin@octobus.net>
parents: 47335
diff changeset
721 }
8d0260d0dbc9 dirstate-v2: Make the dirstate bytes buffer available in more places
Simon Sapin <simon.sapin@octobus.net>
parents: 47335
diff changeset
722 };
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
723 on_disk_nodes.push(match node {
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
724 NodeRef::InMemory(path, node) => {
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
725 let (flags, size, mtime) = match &node.data {
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
726 dirstate_map::NodeData::Entry(entry) => {
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
727 Node::from_dirstate_entry(entry)
48139
ab5a7fdbf75c dirstate-v2: Store a bitfield on disk instead of v1-like state
Simon Sapin <simon.sapin@octobus.net>
parents: 48022
diff changeset
728 }
48501
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
729 dirstate_map::NodeData::CachedDirectory { mtime } => {
48251
dfc5a505ddc5 dirstate-v2: adds two flag to track the presence of some unrecorded files
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48250
diff changeset
730 // we currently never set a mtime if unknown file
dfc5a505ddc5 dirstate-v2: adds two flag to track the presence of some unrecorded files
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48250
diff changeset
731 // are present.
dfc5a505ddc5 dirstate-v2: adds two flag to track the presence of some unrecorded files
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48250
diff changeset
732 // So if we have a mtime for a directory, we know
dfc5a505ddc5 dirstate-v2: adds two flag to track the presence of some unrecorded files
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48250
diff changeset
733 // they are no unknown
dfc5a505ddc5 dirstate-v2: adds two flag to track the presence of some unrecorded files
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48250
diff changeset
734 // files and we
dfc5a505ddc5 dirstate-v2: adds two flag to track the presence of some unrecorded files
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48250
diff changeset
735 // blindly set ALL_UNKNOWN_RECORDED.
dfc5a505ddc5 dirstate-v2: adds two flag to track the presence of some unrecorded files
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48250
diff changeset
736 //
dfc5a505ddc5 dirstate-v2: adds two flag to track the presence of some unrecorded files
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48250
diff changeset
737 // We never set ALL_IGNORED_RECORDED since we
dfc5a505ddc5 dirstate-v2: adds two flag to track the presence of some unrecorded files
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48250
diff changeset
738 // don't track that case
dfc5a505ddc5 dirstate-v2: adds two flag to track the presence of some unrecorded files
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48250
diff changeset
739 // currently.
48501
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
740 let mut flags = Flags::DIRECTORY
48264
bb240915f69f dirstate-v2: adjust the meaning of directory flags
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
741 | Flags::HAS_MTIME
48501
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
742 | Flags::ALL_UNKNOWN_RECORDED;
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
743 if mtime.second_ambiguous {
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
744 flags.insert(Flags::MTIME_SECOND_AMBIGUOUS)
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
745 }
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
746 (flags, 0.into(), (*mtime).into())
4afb9627dc77 dirstate-v2: Apply SECOND_AMBIGUOUS to directory mtimes too
Simon Sapin <simon.sapin@octobus.net>
parents: 48421
diff changeset
747 }
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
748 dirstate_map::NodeData::None => (
48264
bb240915f69f dirstate-v2: adjust the meaning of directory flags
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48263
diff changeset
749 Flags::DIRECTORY,
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
750 0.into(),
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
751 PackedTruncatedTimestamp::null(),
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
752 ),
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
753 };
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
754 Node {
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
755 children,
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
756 copy_source,
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
757 full_path,
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
758 base_name_start: u16::try_from(path.base_name_start())
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
759 // Could only panic for paths over 64 KiB
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
760 .expect("dirstate-v2 path length overflow")
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
761 .into(),
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
762 descendants_with_entry_count: node
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
763 .descendants_with_entry_count
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
764 .into(),
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
765 tracked_descendants_count: node
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
766 .tracked_descendants_count
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
767 .into(),
48231
0524c1359bfc dirstate-v2: Extend node flags to 16 bits
Simon Sapin <simon.sapin@octobus.net>
parents: 48221
diff changeset
768 flags: flags.bits().into(),
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
769 size,
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
770 mtime,
47333
69530e5d4fe5 dirstate-tree: Add `NodeRef` and `ChildNodesRef` enums
Simon Sapin <simon.sapin@octobus.net>
parents: 47331
diff changeset
771 }
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
772 }
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
773 NodeRef::OnDisk(node) => Node {
47348
a4de570e61fa dirstate-v2: Allow tree nodes without an entry to store a timestamp
Simon Sapin <simon.sapin@octobus.net>
parents: 47337
diff changeset
774 children,
a4de570e61fa dirstate-v2: Allow tree nodes without an entry to store a timestamp
Simon Sapin <simon.sapin@octobus.net>
parents: 47337
diff changeset
775 copy_source,
a4de570e61fa dirstate-v2: Allow tree nodes without an entry to store a timestamp
Simon Sapin <simon.sapin@octobus.net>
parents: 47337
diff changeset
776 full_path,
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
777 ..*node
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
778 },
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
779 })
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
780 }
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
781 // … so we can write them contiguously, after writing everything else
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
782 // they refer to.
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
783 let start = self.current_offset();
47679
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
784 let len = child_nodes_len_from_usize(nodes_len);
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
785 self.out.extend(on_disk_nodes.as_bytes());
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
786 Ok(ChildNodes { start, len })
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
787 }
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
788
51616
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
789 /// Catch some dirstate corruptions before writing them to disk
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
790 fn check_children(
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
791 &mut self,
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
792 children: &dirstate_map::ChildNodesRef,
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
793 full_path: &HgPath,
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
794 ) -> Result<(), DirstateError> {
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
795 for child in children.iter() {
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
796 let child_full_path =
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
797 child.full_path(self.dirstate_map.on_disk)?;
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
798
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
799 let prefix_length = child_full_path.len()
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
800 // remove the filename
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
801 - child.base_name(self.dirstate_map.on_disk)?.len()
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
802 // remove the slash
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
803 - 1;
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
804
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
805 let child_prefix = &child_full_path.as_bytes()[..prefix_length];
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
806
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
807 if child_prefix != full_path.as_bytes() {
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
808 let explanation = format!(
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
809 "dirstate child node's path '{}' \
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
810 does not start with its parent's path '{}'",
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
811 child_full_path, full_path,
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
812 );
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
813
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
814 return Err(HgError::corrupted(explanation).into());
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
815 }
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
816 }
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
817 Ok(())
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
818 }
9dbbaecfc950 dirstate-v2: add check of parent/child nodes being related when writing
Raphaël Gomès <rgomes@octobus.net>
parents: 51119
diff changeset
819
47680
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
820 /// If the given slice of items is within `on_disk`, returns its offset
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
821 /// from the start of `on_disk`.
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
822 fn on_disk_offset_of<T>(&self, slice: &[T]) -> Option<Offset>
47679
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
823 where
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
824 T: BytesCast,
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
825 {
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
826 fn address_range(slice: &[u8]) -> std::ops::RangeInclusive<usize> {
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
827 let start = slice.as_ptr() as usize;
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
828 let end = start + slice.len();
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
829 start..=end
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
830 }
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
831 let slice_addresses = address_range(slice.as_bytes());
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
832 let on_disk_addresses = address_range(self.dirstate_map.on_disk);
47680
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
833 if on_disk_addresses.contains(slice_addresses.start())
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
834 && on_disk_addresses.contains(slice_addresses.end())
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
835 {
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
836 let offset = slice_addresses.start() - on_disk_addresses.start();
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
837 Some(offset_from_usize(offset))
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
838 } else {
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
839 None
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
840 }
47679
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
841 }
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
842
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
843 fn current_offset(&mut self) -> Offset {
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
844 let mut offset = self.out.len();
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
845 if self.append {
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
846 offset += self.dirstate_map.on_disk.len()
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
847 }
47679
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
848 offset_from_usize(offset)
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
849 }
47677
da1c0cd68d53 dirstate-v2: shrink on-disk path lengths to 16-bits
Simon Sapin <simon.sapin@octobus.net>
parents: 47676
diff changeset
850
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
851 fn write_path(&mut self, slice: &[u8]) -> PathSlice {
47680
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
852 let len = path_len_from_usize(slice.len());
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
853 // Reuse an already-written path if possible
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
854 if self.append {
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
855 if let Some(start) = self.on_disk_offset_of(slice) {
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
856 return PathSlice { start, len };
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
857 }
a8b0f29dc0d7 dirstate-v2: Reuse existing paths when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47679
diff changeset
858 }
47678
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
859 let start = self.current_offset();
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
860 self.out.extend(slice.as_bytes());
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
861 PathSlice { start, len }
065e61628980 dirstate-v2: Support appending to the same data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47677
diff changeset
862 }
47283
2a9ddc8094c7 dirstate-v2: Change the on-disk format to be tree-shaped
Simon Sapin <simon.sapin@octobus.net>
parents: 47280
diff changeset
863 }
47679
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
864
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
865 fn offset_from_usize(x: usize) -> Offset {
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
866 u32::try_from(x)
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
867 // Could only panic for a dirstate file larger than 4 GiB
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
868 .expect("dirstate-v2 offset overflow")
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
869 .into()
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
870 }
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
871
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
872 fn child_nodes_len_from_usize(x: usize) -> Size {
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
873 u32::try_from(x)
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
874 // Could only panic with over 4 billion nodes
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
875 .expect("dirstate-v2 slice length overflow")
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
876 .into()
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
877 }
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
878
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
879 fn path_len_from_usize(x: usize) -> PathSize {
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
880 u16::try_from(x)
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
881 // Could only panic for paths over 64 KiB
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
882 .expect("dirstate-v2 path length overflow")
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
883 .into()
731286dc5321 dirstate-v2: Reuse existing nodes when appending to a data file
Simon Sapin <simon.sapin@octobus.net>
parents: 47678
diff changeset
884 }
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
885
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
886 impl From<TruncatedTimestamp> for PackedTruncatedTimestamp {
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
887 fn from(timestamp: TruncatedTimestamp) -> Self {
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
888 Self {
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
889 truncated_seconds: timestamp.truncated_seconds().into(),
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
890 nanoseconds: timestamp.nanoseconds().into(),
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
891 }
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
892 }
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
893 }
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
894
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
895 impl TryFrom<PackedTruncatedTimestamp> for TruncatedTimestamp {
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
896 type Error = DirstateV2ParseError;
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
897
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
898 fn try_from(
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
899 timestamp: PackedTruncatedTimestamp,
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
900 ) -> Result<Self, Self::Error> {
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
901 Self::from_already_truncated(
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
902 timestamp.truncated_seconds.get(),
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
903 timestamp.nanoseconds.get(),
48398
111098af6356 dirstate-item: add a "second_ambiguous` flag in the mtime tuple
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 48266
diff changeset
904 false,
48219
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
905 )
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
906 }
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
907 }
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
908 impl PackedTruncatedTimestamp {
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
909 fn null() -> Self {
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
910 Self {
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
911 truncated_seconds: 0.into(),
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
912 nanoseconds: 0.into(),
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
913 }
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
diff changeset
914 }
308d9c245337 dirstate-v2: Add storage space for nanoseconds precision in file mtimes
Simon Sapin <simon.sapin@octobus.net>
parents: 48196
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915 }