changeset 48439:b80e5e75d51e

dirstate: remove `lastnormaltime` mechanism

This is now redundant with the new, simpler `mtime_boundary` one.

Differential Revision: https://phab.mercurial-scm.org/D11795

--- a/mercurial/dirstate.py	Thu Nov 18 13:12:40 2021 +0100
+++ b/mercurial/dirstate.py	Mon Oct 25 11:36:22 2021 +0200
@@ -116,7 +116,6 @@
         # UNC path pointing to root share (issue4557)
         self._rootdir = pathutil.normasprefix(root)
         self._dirty = False
-        self._lastnormaltime = timestamp.zero()
         self._ui = ui
         self._filecache = {}
         self._parentwriters = 0
@@ -430,7 +429,6 @@
         for a in ("_map", "_branch", "_ignore"):
             if a in self.__dict__:
                 delattr(self, a)
-        self._lastnormaltime = timestamp.zero()
         self._dirty = False
         self._parentwriters = 0
         self._origpl = None
@@ -493,11 +491,6 @@
             self._check_new_tracked_filename(filename)
         (mode, size, mtime) = parentfiledata
         self._map.set_clean(filename, mode, size, mtime)
-        if mtime > self._lastnormaltime:
-            # Remember the most recent modification timeslot for status(),
-            # to make sure we won't miss future size-preserving file content
-            # modifications that happen within the same timeslot.
-            self._lastnormaltime = mtime
 
     @requires_no_parents_change
     def set_possibly_dirty(self, filename):
@@ -581,15 +574,6 @@
             has_meaningful_mtime=not possibly_dirty,
             parentfiledata=parentfiledata,
         )
-        if (
-            parentfiledata is not None
-            and parentfiledata[2] is not None
-            and parentfiledata[2] > self._lastnormaltime
-        ):
-            # Remember the most recent modification timeslot for status(),
-            # to make sure we won't miss future size-preserving file content
-            # modifications that happen within the same timeslot.
-            self._lastnormaltime = parentfiledata[2]
 
     def _check_new_tracked_filename(self, filename):
         scmutil.checkfilename(filename)
@@ -693,7 +677,6 @@
 
     def clear(self):
         self._map.clear()
-        self._lastnormaltime = timestamp.zero()
         self._dirty = True
 
     def rebuild(self, parent, allfiles, changedfiles=None):
@@ -701,9 +684,7 @@
             # Rebuild entire dirstate
             to_lookup = allfiles
             to_drop = []
-            lastnormaltime = self._lastnormaltime
             self.clear()
-            self._lastnormaltime = lastnormaltime
         elif len(changedfiles) < 10:
             # Avoid turning allfiles into a set, which can be expensive if it's
             # large.
@@ -818,7 +799,6 @@
                     break
 
         self._map.write(tr, st, now)
-        self._lastnormaltime = timestamp.zero()
         self._dirty = False
 
     def _dirignore(self, f):
@@ -1216,7 +1196,6 @@
             self._rootdir,
             self._ignorefiles(),
             self._checkexec,
-            self._lastnormaltime,
             bool(list_clean),
             bool(list_ignored),
             bool(list_unknown),
@@ -1343,7 +1322,6 @@
         checkexec = self._checkexec
         checklink = self._checklink
         copymap = self._map.copymap
-        lastnormaltime = self._lastnormaltime
 
         # We need to do full walks when either
         # - we're listing all clean files, or
@@ -1399,12 +1377,10 @@
                     else:
                         madd(fn)
                 elif not t.mtime_likely_equal_to(timestamp.mtime_of(st)):
-                    ladd(fn)
-                elif timestamp.mtime_of(st) == lastnormaltime:
-                    # fn may have just been marked as normal and it may have
-                    # changed in the same second without changing its size.
-                    # This can happen if we quickly do multiple commits.
-                    # Force lookup, so we don't miss such a racy file change.
+                    # There might be a change in the future if for example the
+                    # internal clock is off, but this is a case where the issues
+                    # the user would face would be a lot worse and there is
+                    # nothing we can really do.
                     ladd(fn)
                 elif listclean:
                     cadd(fn)

--- a/rust/hg-core/src/dirstate/status.rs	Thu Nov 18 13:12:40 2021 +0100
+++ b/rust/hg-core/src/dirstate/status.rs	Mon Oct 25 11:36:22 2021 +0200
@@ -12,7 +12,6 @@
 use crate::dirstate_tree::on_disk::DirstateV2ParseError;
 
 use crate::{
-    dirstate::TruncatedTimestamp,
     utils::hg_path::{HgPath, HgPathError},
     PatternError,
 };
@@ -62,10 +61,6 @@
 
 #[derive(Debug, Copy, Clone)]
 pub struct StatusOptions {
-    /// Remember the most recent modification timeslot for status, to make
-    /// sure we won't miss future size-preserving file content modifications
-    /// that happen within the same timeslot.
-    pub last_normal_time: TruncatedTimestamp,
     /// Whether we are on a filesystem with UNIX-like exec flags
     pub check_exec: bool,
     pub list_clean: bool,

--- a/rust/hg-core/src/dirstate_tree/status.rs	Thu Nov 18 13:12:40 2021 +0100
+++ b/rust/hg-core/src/dirstate_tree/status.rs	Mon Oct 25 11:36:22 2021 +0200
@@ -532,8 +532,12 @@
             if let Some(dirstate_mtime) = entry.truncated_mtime() {
                 let fs_mtime = TruncatedTimestamp::for_mtime_of(fs_metadata)
                     .expect("OS/libc does not support mtime?");
+                // There might be a change in the future if for example the
+                // internal clock become off while process run, but this is a
+                // case where the issues the user would face
+                // would be a lot worse and there is nothing we
+                // can really do.
                 mtime_looks_clean = fs_mtime.likely_equal(dirstate_mtime)
-                    && !fs_mtime.likely_equal(self.options.last_normal_time)
             } else {
                 // No mtime in the dirstate entry
                 mtime_looks_clean = false

--- a/rust/hg-cpython/src/dirstate.rs	Thu Nov 18 13:12:40 2021 +0100
+++ b/rust/hg-cpython/src/dirstate.rs	Mon Oct 25 11:36:22 2021 +0200
@@ -54,7 +54,6 @@
                 matcher: PyObject,
                 ignorefiles: PyList,
                 check_exec: bool,
-                last_normal_time: (u32, u32),
                 list_clean: bool,
                 list_ignored: bool,
                 list_unknown: bool,

--- a/rust/hg-cpython/src/dirstate/status.rs	Thu Nov 18 13:12:40 2021 +0100
+++ b/rust/hg-cpython/src/dirstate/status.rs	Mon Oct 25 11:36:22 2021 +0200
@@ -9,7 +9,6 @@
 //! `hg-core` crate. From Python, this will be seen as
 //! `rustext.dirstate.status`.
 
-use crate::dirstate::item::timestamp;
 use crate::{dirstate::DirstateMap, exceptions::FallbackError};
 use cpython::exc::OSError;
 use cpython::{
@@ -103,13 +102,11 @@
     root_dir: PyObject,
     ignore_files: PyList,
     check_exec: bool,
-    last_normal_time: (u32, u32),
     list_clean: bool,
     list_ignored: bool,
     list_unknown: bool,
     collect_traversed_dirs: bool,
 ) -> PyResult<PyTuple> {
-    let last_normal_time = timestamp(py, last_normal_time)?;
     let bytes = root_dir.extract::<PyBytes>(py)?;
     let root_dir = get_path_from_bytes(bytes.data(py));
 
@@ -135,7 +132,6 @@
                     ignore_files,
                     StatusOptions {
                         check_exec,
-                        last_normal_time,
                         list_clean,
                         list_ignored,
                         list_unknown,
@@ -172,7 +168,6 @@
                     ignore_files,
                     StatusOptions {
                         check_exec,
-                        last_normal_time,
                         list_clean,
                         list_ignored,
                         list_unknown,
@@ -224,7 +219,6 @@
                     ignore_files,
                     StatusOptions {
                         check_exec,
-                        last_normal_time,
                         list_clean,
                         list_ignored,
                         list_unknown,

--- a/rust/rhg/src/commands/status.rs	Thu Nov 18 13:12:40 2021 +0100
+++ b/rust/rhg/src/commands/status.rs	Mon Oct 25 11:36:22 2021 +0200
@@ -12,7 +12,7 @@
 use format_bytes::format_bytes;
 use hg;
 use hg::config::Config;
-use hg::dirstate::{has_exec_bit, TruncatedTimestamp};
+use hg::dirstate::has_exec_bit;
 use hg::errors::HgError;
 use hg::manifest::Manifest;
 use hg::matchers::AlwaysMatcher;
@@ -194,11 +194,6 @@
     let mut dmap = repo.dirstate_map_mut()?;
 
     let options = StatusOptions {
-        // TODO should be provided by the dirstate parsing and
-        // hence be stored on dmap. Using a value that assumes we aren't
-        // below the time resolution granularity of the FS and the
-        // dirstate.
-        last_normal_time: TruncatedTimestamp::new_truncate(0, 0),
         // we're currently supporting file systems with exec flags only
         // anyway
         check_exec: true,
@@ -369,7 +364,8 @@
     let fs_path = hg_path_to_os_string(hg_path).expect("HgPath conversion");
     let fs_metadata = vfs.symlink_metadata(&fs_path)?;
     let is_symlink = fs_metadata.file_type().is_symlink();
-    // TODO: Also account for `FALLBACK_SYMLINK` and `FALLBACK_EXEC` from the dirstate
+    // TODO: Also account for `FALLBACK_SYMLINK` and `FALLBACK_EXEC` from the
+    // dirstate
     let fs_flags = if is_symlink {
         Some(b'l')
     } else if has_exec_bit(&fs_metadata) {