Mercurial > hg
annotate mercurial/copies.py @ 46150:a132aa5979ec
copies: no longer cache the ChangedFiles during copy tracing
Now that the copies information for both parents are processed all at once, we
no longer needs to cache this information, so we simplify the code.
The simpler code is also a (tiny) bit faster overall.
Repo Case Source-Rev Dest-Rev # of revisions old time new time Difference Factor time per rev
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mercurial x_revs_x_added_0_copies ad6b123de1c7 39cfcef4f463 : 1 revs, 0.000041 s, 0.000041 s, +0.000000 s, × 1.0000, 41 µs/rev
mercurial x_revs_x_added_x_copies 2b1c78674230 0c1d10351869 : 6 revs, 0.000102 s, 0.000096 s, -0.000006 s, × 0.9412, 16 µs/rev
mercurial x000_revs_x000_added_x_copies 81f8ff2a9bf2 dd3267698d84 : 1032 revs, 0.004254 s, 0.004039 s, -0.000215 s, × 0.9495, 3 µs/rev
pypy x_revs_x_added_0_copies aed021ee8ae8 099ed31b181b : 9 revs, 0.000282 s, 0.000189 s, -0.000093 s, × 0.6702, 21 µs/rev
pypy x_revs_x000_added_0_copies 4aa4e1f8e19a 359343b9ac0e : 1 revs, 0.000048 s, 0.000047 s, -0.000001 s, × 0.9792, 47 µs/rev
pypy x_revs_x_added_x_copies ac52eb7bbbb0 72e022663155 : 7 revs, 0.000211 s, 0.000103 s, -0.000108 s, × 0.4882, 14 µs/rev
pypy x_revs_x00_added_x_copies c3b14617fbd7 ace7255d9a26 : 1 revs, 0.000375 s, 0.000286 s, -0.000089 s, × 0.7627, 286 µs/rev
pypy x_revs_x000_added_x000_copies df6f7a526b60 a83dc6a2d56f : 6 revs, 0.010574 s, 0.010436 s, -0.000138 s, × 0.9869, 1739 µs/rev
pypy x000_revs_xx00_added_0_copies 89a76aede314 2f22446ff07e : 4785 revs, 0.049974 s, 0.047465 s, -0.002509 s, × 0.9498, 9 µs/rev
pypy x000_revs_x000_added_x_copies 8a3b5bfd266e 2c68e87c3efe : 6780 revs, 0.084300 s, 0.082351 s, -0.001949 s, × 0.9769, 12 µs/rev
pypy x000_revs_x000_added_x000_copies 89a76aede314 7b3dda341c84 : 5441 revs, 0.060128 s, 0.058757 s, -0.001371 s, × 0.9772, 10 µs/rev
pypy x0000_revs_x_added_0_copies d1defd0dc478 c9cb1334cc78 : 43645 revs, 0.686542 s, 0.674129 s, -0.012413 s, × 0.9819, 15 µs/rev
pypy x0000_revs_xx000_added_0_copies bf2c629d0071 4ffed77c095c : 2 revs, 0.009277 s, 0.009434 s, +0.000157 s, × 1.0169, 4717 µs/rev
pypy x0000_revs_xx000_added_x000_copies 08ea3258278e d9fa043f30c0 : 11316 revs, 0.114733 s, 0.111935 s, -0.002798 s, × 0.9756, 9 µs/rev
netbeans x_revs_x_added_0_copies fb0955ffcbcd a01e9239f9e7 : 2 revs, 0.000081 s, 0.000078 s, -0.000003 s, × 0.9630, 39 µs/rev
netbeans x_revs_x000_added_0_copies 6f360122949f 20eb231cc7d0 : 2 revs, 0.000107 s, 0.000106 s, -0.000001 s, × 0.9907, 53 µs/rev
netbeans x_revs_x_added_x_copies 1ada3faf6fb6 5a39d12eecf4 : 3 revs, 0.000173 s, 0.000162 s, -0.000011 s, × 0.9364, 54 µs/rev
netbeans x_revs_x00_added_x_copies 35be93ba1e2c 9eec5e90c05f : 9 revs, 0.000698 s, 0.000695 s, -0.000003 s, × 0.9957, 77 µs/rev
netbeans x000_revs_xx00_added_0_copies eac3045b4fdd 51d4ae7f1290 : 1421 revs, 0.009248 s, 0.008901 s, -0.000347 s, × 0.9625, 6 µs/rev
netbeans x000_revs_x000_added_x_copies e2063d266acd 6081d72689dc : 1533 revs, 0.015446 s, 0.014333 s, -0.001113 s, × 0.9279, 9 µs/rev
netbeans x000_revs_x000_added_x000_copies ff453e9fee32 411350406ec2 : 5750 revs, 0.074373 s, 0.071998 s, -0.002375 s, × 0.9681, 12 µs/rev
netbeans x0000_revs_xx000_added_x000_copies 588c2d1ced70 1aad62e59ddd : 66949 revs, 0.639870 s, 0.615346 s, -0.024524 s, × 0.9617, 9 µs/rev
mozilla-central x_revs_x_added_0_copies 3697f962bb7b 7015fcdd43a2 : 2 revs, 0.000088 s, 0.000085 s, -0.000003 s, × 0.9659, 42 µs/rev
mozilla-central x_revs_x000_added_0_copies dd390860c6c9 40d0c5bed75d : 8 revs, 0.000199 s, 0.000199 s, +0.000000 s, × 1.0000, 24 µs/rev
mozilla-central x_revs_x_added_x_copies 8d198483ae3b 14207ffc2b2f : 9 revs, 0.000171 s, 0.000169 s, -0.000002 s, × 0.9883, 18 µs/rev
mozilla-central x_revs_x00_added_x_copies 98cbc58cc6bc 446a150332c3 : 7 revs, 0.000592 s, 0.000590 s, -0.000002 s, × 0.9966, 84 µs/rev
mozilla-central x_revs_x000_added_x000_copies 3c684b4b8f68 0a5e72d1b479 : 3 revs, 0.003151 s, 0.003122 s, -0.000029 s, × 0.9908, 1040 µs/rev
mozilla-central x_revs_x0000_added_x0000_copies effb563bb7e5 c07a39dc4e80 : 6 revs, 0.061612 s, 0.061192 s, -0.000420 s, × 0.9932, 10198 µs/rev
mozilla-central x000_revs_xx00_added_0_copies 6100d773079a 04a55431795e : 1593 revs, 0.005381 s, 0.005137 s, -0.000244 s, × 0.9547, 3 µs/rev
mozilla-central x000_revs_x000_added_x_copies 9f17a6fc04f9 2d37b966abed : 41 revs, 0.003742 s, 0.003585 s, -0.000157 s, × 0.9580, 87 µs/rev
mozilla-central x000_revs_x000_added_x000_copies 7c97034feb78 4407bd0c6330 : 7839 revs, 0.061983 s, 0.060592 s, -0.001391 s, × 0.9776, 7 µs/rev
mozilla-central x0000_revs_xx000_added_0_copies 9eec5917337d 67118cc6dcad : 615 revs, 0.019861 s, 0.019596 s, -0.000265 s, × 0.9867, 31 µs/rev
mozilla-central x0000_revs_xx000_added_x000_copies f78c615a656c 96a38b690156 : 30263 revs, 0.188101 s, 0.183558 s, -0.004543 s, × 0.9758, 6 µs/rev
mozilla-central x00000_revs_x0000_added_x0000_copies 6832ae71433c 4c222a1d9a00 : 153721 revs, 1.806696 s, 1.758083 s, -0.048613 s, × 0.9731, 11 µs/rev
mozilla-central x00000_revs_x00000_added_x000_copies 76caed42cf7c 1daa622bbe42 : 204976 revs, 2.682987 s, 2.592955 s, -0.090032 s, × 0.9664, 12 µs/rev
mozilla-try x_revs_x_added_0_copies aaf6dde0deb8 9790f499805a : 2 revs, 0.000852 s, 0.000844 s, -0.000008 s, × 0.9906, 422 µs/rev
mozilla-try x_revs_x000_added_0_copies d8d0222927b4 5bb8ce8c7450 : 2 revs, 0.000859 s, 0.000861 s, +0.000002 s, × 1.0023, 430 µs/rev
mozilla-try x_revs_x_added_x_copies 092fcca11bdb 936255a0384a : 4 revs, 0.000150 s, 0.000150 s, +0.000000 s, × 1.0000, 37 µs/rev
mozilla-try x_revs_x00_added_x_copies b53d2fadbdb5 017afae788ec : 2 revs, 0.001158 s, 0.001166 s, +0.000008 s, × 1.0069, 583 µs/rev
mozilla-try x_revs_x000_added_x000_copies 20408ad61ce5 6f0ee96e21ad : 1 revs, 0.027240 s, 0.027359 s, +0.000119 s, × 1.0044, 27359 µs/rev
mozilla-try x_revs_x0000_added_x0000_copies effb563bb7e5 c07a39dc4e80 : 6 revs, 0.062824 s, 0.061848 s, -0.000976 s, × 0.9845, 10308 µs/rev
mozilla-try x000_revs_xx00_added_0_copies 6100d773079a 04a55431795e : 1593 revs, 0.005463 s, 0.005110 s, -0.000353 s, × 0.9354, 3 µs/rev
mozilla-try x000_revs_x000_added_x_copies 9f17a6fc04f9 2d37b966abed : 41 revs, 0.004238 s, 0.004168 s, -0.000070 s, × 0.9835, 101 µs/rev
mozilla-try x000_revs_x000_added_x000_copies 1346fd0130e4 4c65cbdabc1f : 6657 revs, 0.064113 s, 0.063414 s, -0.000699 s, × 0.9891, 9 µs/rev
mozilla-try x0000_revs_x_added_0_copies 63519bfd42ee a36a2a865d92 : 40314 revs, 0.294063 s, 0.288301 s, -0.005762 s, × 0.9804, 7 µs/rev
mozilla-try x0000_revs_x_added_x_copies 9fe69ff0762d bcabf2a78927 : 38690 revs, 0.281493 s, 0.275798 s, -0.005695 s, × 0.9798, 7 µs/rev
mozilla-try x0000_revs_xx000_added_x_copies 156f6e2674f2 4d0f2c178e66 : 8598 revs, 0.076323 s, 0.074640 s, -0.001683 s, × 0.9779, 8 µs/rev
mozilla-try x0000_revs_xx000_added_0_copies 9eec5917337d 67118cc6dcad : 615 revs, 0.020390 s, 0.020327 s, -0.000063 s, × 0.9969, 33 µs/rev
mozilla-try x0000_revs_xx000_added_x000_copies 89294cd501d9 7ccb2fc7ccb5 : 97052 revs, 3.023879 s, 2.970385 s, -0.053494 s, × 0.9823, 30 µs/rev
mozilla-try x0000_revs_x0000_added_x0000_copies e928c65095ed e951f4ad123a : 52031 revs, 0.735549 s, 0.719432 s, -0.016117 s, × 0.9781, 13 µs/rev
mozilla-try x00000_revs_x_added_0_copies 6a320851d377 1ebb79acd503 : 363753 revs, 18.568900 s, 18.165143 s, -0.403757 s, × 0.9783, 49 µs/rev
mozilla-try x00000_revs_x00000_added_0_copies dc8a3ca7010e d16fde900c9c : 34414 revs, 0.502584 s, 0.486769 s, -0.015815 s, × 0.9685, 14 µs/rev
mozilla-try x00000_revs_x_added_x_copies 5173c4b6f97c 95d83ee7242d : 362229 revs, 18.356645 s, 17.913924 s, -0.442721 s, × 0.9759, 49 µs/rev
mozilla-try x00000_revs_x000_added_x_copies 9126823d0e9c ca82787bb23c : 359344 revs, 18.250393 s, 17.660113 s, -0.590280 s, × 0.9677, 49 µs/rev
mozilla-try x00000_revs_x0000_added_x0000_copies 8d3fafa80d4b eb884023b810 : 192665 revs, 2.792459 s, 2.709446 s, -0.083013 s, × 0.9703, 14 µs/rev
mozilla-try x00000_revs_x00000_added_x0000_copies 1b661134e2ca 1ae03d022d6d : 228985 revs, 107.697264 s, 107.796891 s, +0.099627 s, × 1.0009, 470 µs/rev
mozilla-try x00000_revs_x00000_added_x000_copies 9b2a99adc05e 8e29777b48e6 : 382065 revs, 63.961040 s, 63.575217 s, -0.385823 s, × 0.9940, 166 µs/rev
Differential Revision: https://phab.mercurial-scm.org/D9423
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Fri, 20 Nov 2020 13:46:14 +0100 |
parents | 294d5aca4ff5 |
children | 1fcfff09cac5 |
rev | line source |
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1 # coding: utf8 |
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2 # copies.py - copy detection for Mercurial |
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3 # |
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4 # Copyright 2008 Matt Mackall <mpm@selenic.com> |
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5 # |
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6 # This software may be used and distributed according to the terms of the |
10263 | 7 # GNU General Public License version 2 or any later version. |
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8 |
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9 from __future__ import absolute_import |
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10 |
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11 import collections |
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12 import os |
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13 |
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14 from .i18n import _ |
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15 from .node import ( |
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16 nullid, |
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17 nullrev, |
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18 ) |
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19 |
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20 from . import ( |
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21 match as matchmod, |
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22 pathutil, |
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23 policy, |
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24 pycompat, |
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25 util, |
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26 ) |
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27 |
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28 |
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29 from .utils import stringutil |
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30 |
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31 from .revlogutils import ( |
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32 flagutil, |
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33 sidedata as sidedatamod, |
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34 ) |
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35 |
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36 rustmod = policy.importrust("copy_tracing") |
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37 |
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38 |
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39 def _filter(src, dst, t): |
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40 """filters out invalid copies after chaining""" |
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41 |
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42 # When _chain()'ing copies in 'a' (from 'src' via some other commit 'mid') |
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43 # with copies in 'b' (from 'mid' to 'dst'), we can get the different cases |
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44 # in the following table (not including trivial cases). For example, case 2 |
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45 # is where a file existed in 'src' and remained under that name in 'mid' and |
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46 # then was renamed between 'mid' and 'dst'. |
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47 # |
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48 # case src mid dst result |
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49 # 1 x y - - |
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50 # 2 x y y x->y |
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51 # 3 x y x - |
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52 # 4 x y z x->z |
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53 # 5 - x y - |
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54 # 6 x x y x->y |
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55 # |
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56 # _chain() takes care of chaining the copies in 'a' and 'b', but it |
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57 # cannot tell the difference between cases 1 and 2, between 3 and 4, or |
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58 # between 5 and 6, so it includes all cases in its result. |
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59 # Cases 1, 3, and 5 are then removed by _filter(). |
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60 |
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61 for k, v in list(t.items()): |
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62 # remove copies from files that didn't exist |
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63 if v not in src: |
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64 del t[k] |
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65 # remove criss-crossed copies |
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66 elif k in src and v in dst: |
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67 del t[k] |
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68 # remove copies to files that were then removed |
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69 elif k not in dst: |
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70 del t[k] |
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71 |
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72 |
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73 def _chain(prefix, suffix): |
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74 """chain two sets of copies 'prefix' and 'suffix'""" |
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75 result = prefix.copy() |
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76 for key, value in pycompat.iteritems(suffix): |
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77 result[key] = prefix.get(value, value) |
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78 return result |
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79 |
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80 |
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81 def _tracefile(fctx, am, basemf): |
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82 """return file context that is the ancestor of fctx present in ancestor |
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83 manifest am |
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84 |
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85 Note: we used to try and stop after a given limit, however checking if that |
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86 limit is reached turned out to be very expensive. we are better off |
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87 disabling that feature.""" |
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88 |
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89 for f in fctx.ancestors(): |
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90 path = f.path() |
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91 if am.get(path, None) == f.filenode(): |
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92 return path |
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93 if basemf and basemf.get(path, None) == f.filenode(): |
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94 return path |
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95 |
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96 |
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97 def _dirstatecopies(repo, match=None): |
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98 ds = repo.dirstate |
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99 c = ds.copies().copy() |
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100 for k in list(c): |
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101 if ds[k] not in b'anm' or (match and not match(k)): |
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102 del c[k] |
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103 return c |
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104 |
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105 |
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106 def _computeforwardmissing(a, b, match=None): |
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107 """Computes which files are in b but not a. |
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108 This is its own function so extensions can easily wrap this call to see what |
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109 files _forwardcopies is about to process. |
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110 """ |
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111 ma = a.manifest() |
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112 mb = b.manifest() |
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113 return mb.filesnotin(ma, match=match) |
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114 |
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115 |
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116 def usechangesetcentricalgo(repo): |
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117 """Checks if we should use changeset-centric copy algorithms""" |
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118 if repo.filecopiesmode == b'changeset-sidedata': |
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119 return True |
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120 readfrom = repo.ui.config(b'experimental', b'copies.read-from') |
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121 changesetsource = (b'changeset-only', b'compatibility') |
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122 return readfrom in changesetsource |
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123 |
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124 |
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125 def _committedforwardcopies(a, b, base, match): |
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126 """Like _forwardcopies(), but b.rev() cannot be None (working copy)""" |
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127 # files might have to be traced back to the fctx parent of the last |
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128 # one-side-only changeset, but not further back than that |
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129 repo = a._repo |
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130 |
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131 if usechangesetcentricalgo(repo): |
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132 return _changesetforwardcopies(a, b, match) |
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133 |
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134 debug = repo.ui.debugflag and repo.ui.configbool(b'devel', b'debug.copies') |
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135 dbg = repo.ui.debug |
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136 if debug: |
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137 dbg(b'debug.copies: looking into rename from %s to %s\n' % (a, b)) |
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138 am = a.manifest() |
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139 basemf = None if base is None else base.manifest() |
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140 |
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141 # find where new files came from |
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142 # we currently don't try to find where old files went, too expensive |
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143 # this means we can miss a case like 'hg rm b; hg cp a b' |
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144 cm = {} |
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145 |
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146 # Computing the forward missing is quite expensive on large manifests, since |
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147 # it compares the entire manifests. We can optimize it in the common use |
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148 # case of computing what copies are in a commit versus its parent (like |
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149 # during a rebase or histedit). Note, we exclude merge commits from this |
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150 # optimization, since the ctx.files() for a merge commit is not correct for |
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151 # this comparison. |
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152 forwardmissingmatch = match |
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153 if b.p1() == a and b.p2().node() == nullid: |
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154 filesmatcher = matchmod.exact(b.files()) |
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155 forwardmissingmatch = matchmod.intersectmatchers(match, filesmatcher) |
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156 missing = _computeforwardmissing(a, b, match=forwardmissingmatch) |
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157 |
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158 ancestrycontext = a._repo.changelog.ancestors([b.rev()], inclusive=True) |
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159 |
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160 if debug: |
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161 dbg(b'debug.copies: missing files to search: %d\n' % len(missing)) |
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162 |
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163 for f in sorted(missing): |
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164 if debug: |
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165 dbg(b'debug.copies: tracing file: %s\n' % f) |
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166 fctx = b[f] |
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167 fctx._ancestrycontext = ancestrycontext |
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168 |
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169 if debug: |
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170 start = util.timer() |
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171 opath = _tracefile(fctx, am, basemf) |
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172 if opath: |
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173 if debug: |
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174 dbg(b'debug.copies: rename of: %s\n' % opath) |
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175 cm[f] = opath |
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176 if debug: |
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177 dbg( |
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178 b'debug.copies: time: %f seconds\n' |
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179 % (util.timer() - start) |
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180 ) |
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181 return cm |
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182 |
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183 |
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184 def _revinfo_getter(repo, match): |
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185 """returns a function that returns the following data given a <rev>" |
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186 |
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187 * p1: revision number of first parent |
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188 * p2: revision number of first parent |
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189 * changes: a ChangingFiles object |
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190 """ |
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191 cl = repo.changelog |
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192 parents = cl.parentrevs |
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193 flags = cl.flags |
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194 |
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195 HASCOPIESINFO = flagutil.REVIDX_HASCOPIESINFO |
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196 |
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197 changelogrevision = cl.changelogrevision |
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198 |
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199 alwaysmatch = match.always() |
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200 |
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201 if rustmod is not None and alwaysmatch: |
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202 |
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203 def revinfo(rev): |
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204 p1, p2 = parents(rev) |
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205 if flags(rev) & HASCOPIESINFO: |
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206 raw = changelogrevision(rev)._sidedata.get(sidedatamod.SD_FILES) |
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207 else: |
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208 raw = None |
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209 return (p1, p2, raw) |
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210 |
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211 else: |
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212 |
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213 def revinfo(rev): |
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214 p1, p2 = parents(rev) |
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215 if flags(rev) & HASCOPIESINFO: |
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216 changes = changelogrevision(rev).changes |
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217 else: |
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218 changes = None |
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219 return (p1, p2, changes) |
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220 |
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221 return revinfo |
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222 |
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223 |
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224 def cached_is_ancestor(is_ancestor): |
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225 """return a cached version of is_ancestor""" |
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226 cache = {} |
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227 |
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228 def _is_ancestor(anc, desc): |
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229 if anc > desc: |
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230 return False |
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231 elif anc == desc: |
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232 return True |
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233 key = (anc, desc) |
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234 ret = cache.get(key) |
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235 if ret is None: |
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236 ret = cache[key] = is_ancestor(anc, desc) |
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237 return ret |
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238 |
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239 return _is_ancestor |
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240 |
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241 |
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242 def _changesetforwardcopies(a, b, match): |
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243 if a.rev() in (nullrev, b.rev()): |
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244 return {} |
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245 |
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246 repo = a.repo().unfiltered() |
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247 children = {} |
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248 |
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249 cl = repo.changelog |
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250 isancestor = cl.isancestorrev |
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251 |
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252 # To track rename from "A" to B, we need to gather all parent → children |
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253 # edges that are contains in `::B` but not in `::A`. |
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254 # |
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255 # |
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256 # To do so, we need to gather all revisions exclusive¹ to "B" (ie¹: `::b - |
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257 # ::a`) and also all the "roots point", ie the parents of the exclusive set |
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258 # that belong to ::a. These are exactly all the revisions needed to express |
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259 # the parent → children we need to combine. |
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260 # |
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261 # [1] actually, we need to gather all the edges within `(::a)::b`, ie: |
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262 # excluding paths that leads to roots that are not ancestors of `a`. We |
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263 # keep this out of the explanation because it is hard enough without this special case.. |
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264 |
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265 parents = cl._uncheckedparentrevs |
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266 graph_roots = (nullrev, nullrev) |
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267 |
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268 ancestors = cl.ancestors([a.rev()], inclusive=True) |
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269 revs = cl.findmissingrevs(common=[a.rev()], heads=[b.rev()]) |
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270 roots = set() |
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271 has_graph_roots = False |
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272 |
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273 # iterate over `only(B, A)` |
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274 for r in revs: |
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275 ps = parents(r) |
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276 if ps == graph_roots: |
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277 has_graph_roots = True |
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278 else: |
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279 p1, p2 = ps |
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280 |
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281 # find all the "root points" (see larger comment above) |
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282 if p1 != nullrev and p1 in ancestors: |
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283 roots.add(p1) |
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284 if p2 != nullrev and p2 in ancestors: |
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285 roots.add(p2) |
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286 if not roots: |
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287 # no common revision to track copies from |
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288 return {} |
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289 if has_graph_roots: |
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290 # this deal with the special case mentionned in the [1] footnotes. We |
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291 # must filter out revisions that leads to non-common graphroots. |
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292 roots = list(roots) |
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293 m = min(roots) |
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294 h = [b.rev()] |
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295 roots_to_head = cl.reachableroots(m, h, roots, includepath=True) |
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296 roots_to_head = set(roots_to_head) |
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297 revs = [r for r in revs if r in roots_to_head] |
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298 |
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299 if repo.filecopiesmode == b'changeset-sidedata': |
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300 # When using side-data, we will process the edges "from" the children. |
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301 # We iterate over the childre, gathering previous collected data for |
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302 # the parents. Do know when the parents data is no longer necessary, we |
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303 # keep a counter of how many children each revision has. |
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304 # |
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305 # An interresting property of `children_count` is that it only contains |
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306 # revision that will be relevant for a edge of the graph. So if a |
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307 # children has parent not in `children_count`, that edges should not be |
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308 # processed. |
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309 children_count = dict((r, 0) for r in roots) |
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310 for r in revs: |
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311 for p in cl.parentrevs(r): |
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312 if p == nullrev: |
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313 continue |
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314 children_count[r] = 0 |
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315 if p in children_count: |
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316 children_count[p] += 1 |
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317 revinfo = _revinfo_getter(repo, match) |
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318 return _combine_changeset_copies( |
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319 revs, children_count, b.rev(), revinfo, match, isancestor |
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320 ) |
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321 else: |
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322 # When not using side-data, we will process the edges "from" the parent. |
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323 # so we need a full mapping of the parent -> children relation. |
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324 children = dict((r, []) for r in roots) |
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325 for r in revs: |
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326 for p in cl.parentrevs(r): |
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327 if p == nullrev: |
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328 continue |
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329 children[r] = [] |
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330 if p in children: |
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331 children[p].append(r) |
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332 x = revs.pop() |
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333 assert x == b.rev() |
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334 revs.extend(roots) |
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335 revs.sort() |
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336 |
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337 revinfo = _revinfo_getter_extra(repo) |
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338 return _combine_changeset_copies_extra( |
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339 revs, children, b.rev(), revinfo, match, isancestor |
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340 ) |
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341 |
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342 |
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343 def _combine_changeset_copies( |
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344 revs, children_count, targetrev, revinfo, match, isancestor |
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345 ): |
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346 """combine the copies information for each item of iterrevs |
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347 |
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348 revs: sorted iterable of revision to visit |
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349 children_count: a {parent: <number-of-relevant-children>} mapping. |
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350 targetrev: the final copies destination revision (not in iterrevs) |
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351 revinfo(rev): a function that return (p1, p2, p1copies, p2copies, removed) |
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352 match: a matcher |
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353 |
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354 It returns the aggregated copies information for `targetrev`. |
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355 """ |
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356 |
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357 alwaysmatch = match.always() |
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358 |
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359 if rustmod is not None and alwaysmatch: |
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360 return rustmod.combine_changeset_copies( |
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361 list(revs), children_count, targetrev, revinfo, isancestor |
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362 ) |
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363 |
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364 isancestor = cached_is_ancestor(isancestor) |
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365 |
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366 all_copies = {} |
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367 # iterate over all the "children" side of copy tracing "edge" |
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368 for current_rev in revs: |
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369 p1, p2, changes = revinfo(current_rev) |
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370 current_copies = None |
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371 |
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372 # iterate over all parents to chain the existing data with the |
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373 # data from the parent → child edge. |
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374 for parent, parent_rev in ((1, p1), (2, p2)): |
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375 if parent_rev == nullrev: |
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376 continue |
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377 remaining_children = children_count.get(parent_rev) |
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378 if remaining_children is None: |
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379 continue |
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380 remaining_children -= 1 |
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381 children_count[parent_rev] = remaining_children |
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382 if remaining_children: |
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383 copies = all_copies.get(parent_rev, None) |
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384 else: |
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385 copies = all_copies.pop(parent_rev, None) |
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386 |
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387 if copies is None: |
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388 # this is a root |
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389 copies = {} |
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390 |
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391 newcopies = copies |
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392 # chain the data in the edge with the existing data |
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393 if changes is not None: |
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394 childcopies = {} |
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395 if parent == 1: |
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396 childcopies = changes.copied_from_p1 |
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397 elif parent == 2: |
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398 childcopies = changes.copied_from_p2 |
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399 |
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400 if not alwaysmatch: |
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401 childcopies = { |
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402 dst: src |
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403 for dst, src in childcopies.items() |
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404 if match(dst) |
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405 } |
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406 if childcopies: |
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407 newcopies = copies.copy() |
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408 for dest, source in pycompat.iteritems(childcopies): |
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409 prev = copies.get(source) |
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410 if prev is not None and prev[1] is not None: |
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411 source = prev[1] |
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412 newcopies[dest] = (current_rev, source) |
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413 assert newcopies is not copies |
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414 if changes.removed: |
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415 if newcopies is copies: |
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416 newcopies = copies.copy() |
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417 for f in changes.removed: |
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418 if f in newcopies: |
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419 if newcopies is copies: |
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420 # copy on write to avoid affecting potential other |
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421 # branches. when there are no other branches, this |
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422 # could be avoided. |
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423 newcopies = copies.copy() |
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424 newcopies[f] = (current_rev, None) |
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425 |
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426 # check potential need to combine the data from another parent (for |
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427 # that child). See comment below for details. |
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428 if current_copies is None: |
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429 current_copies = newcopies |
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430 elif current_copies is newcopies: |
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431 # nothing to merge: |
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432 pass |
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433 else: |
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434 # we are the second parent to work on c, we need to merge our |
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435 # work with the other. |
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436 # |
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437 # In case of conflict, parent 1 take precedence over parent 2. |
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438 # This is an arbitrary choice made anew when implementing |
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439 # changeset based copies. It was made without regards with |
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440 # potential filelog related behavior. |
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441 assert parent == 2 |
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442 current_copies = _merge_copies_dict( |
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443 newcopies, current_copies, isancestor, changes |
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444 ) |
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445 all_copies[current_rev] = current_copies |
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446 |
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447 # filter out internal details and return a {dest: source mapping} |
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448 final_copies = {} |
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449 for dest, (tt, source) in all_copies[targetrev].items(): |
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450 if source is not None: |
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451 final_copies[dest] = source |
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452 return final_copies |
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453 |
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454 |
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455 def _merge_copies_dict(minor, major, isancestor, changes): |
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456 """merge two copies-mapping together, minor and major |
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457 |
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458 In case of conflict, value from "major" will be picked. |
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459 |
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460 - `isancestors(low_rev, high_rev)`: callable return True if `low_rev` is an |
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461 ancestors of `high_rev`, |
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462 |
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463 - `ismerged(path)`: callable return True if `path` have been merged in the |
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464 current revision, |
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465 |
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466 return the resulting dict (in practice, the "minor" object, updated) |
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467 """ |
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468 for dest, value in major.items(): |
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469 other = minor.get(dest) |
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470 if other is None: |
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471 minor[dest] = value |
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472 else: |
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473 new_tt = value[0] |
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474 other_tt = other[0] |
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475 if value[1] == other[1]: |
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476 continue |
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477 # content from "major" wins, unless it is older |
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478 # than the branch point or there is a merge |
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|
479 if new_tt == other_tt: |
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|
480 minor[dest] = value |
45672
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|
481 elif ( |
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|
482 changes is not None |
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|
483 and value[1] is None |
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|
484 and dest in changes.salvaged |
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diff
changeset
|
485 ): |
45670
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diff
changeset
|
486 pass |
45672
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|
487 elif ( |
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|
488 changes is not None |
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|
489 and other[1] is None |
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|
490 and dest in changes.salvaged |
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|
491 ): |
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|
492 minor[dest] = value |
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|
493 elif changes is not None and dest in changes.merged: |
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494 minor[dest] = value |
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diff
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|
495 elif not isancestor(new_tt, other_tt): |
45798
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|
496 if value[1] is not None: |
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497 minor[dest] = value |
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|
498 elif isancestor(other_tt, new_tt): |
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|
499 minor[dest] = value |
45986
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copies: clarify the return of _merge_copies_dict
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diff
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|
500 return minor |
41756
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copies: do copy tracing based on ctx.p[12]copies() if configured
Martin von Zweigbergk <martinvonz@google.com>
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diff
changeset
|
501 |
43076
2372284d9457
formatting: blacken the codebase
Augie Fackler <augie@google.com>
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diff
changeset
|
502 |
45638
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|
503 def _revinfo_getter_extra(repo): |
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504 """return a function that return multiple data given a <rev>"i |
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505 |
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506 * p1: revision number of first parent |
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507 * p2: revision number of first parent |
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508 * p1copies: mapping of copies from p1 |
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509 * p2copies: mapping of copies from p2 |
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|
510 * removed: a list of removed files |
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511 * ismerged: a callback to know if file was merged in that revision |
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512 """ |
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changeset
|
513 cl = repo.changelog |
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changeset
|
514 parents = cl.parentrevs |
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|
515 |
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|
516 def get_ismerged(rev): |
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517 ctx = repo[rev] |
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518 |
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519 def ismerged(path): |
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520 if path not in ctx.files(): |
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|
521 return False |
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522 fctx = ctx[path] |
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523 parents = fctx._filelog.parents(fctx._filenode) |
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changeset
|
524 nb_parents = 0 |
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diff
changeset
|
525 for n in parents: |
46113
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node: import symbols explicitly
Joerg Sonnenberger <joerg@bec.de>
parents:
46109
diff
changeset
|
526 if n != nullid: |
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|
527 nb_parents += 1 |
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|
528 return nb_parents >= 2 |
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529 |
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|
530 return ismerged |
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changeset
|
531 |
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changeset
|
532 def revinfo(rev): |
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|
533 p1, p2 = parents(rev) |
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changeset
|
534 ctx = repo[rev] |
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changeset
|
535 p1copies, p2copies = ctx._copies |
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changeset
|
536 removed = ctx.filesremoved() |
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|
537 return p1, p2, p1copies, p2copies, removed, get_ismerged(rev) |
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diff
changeset
|
538 |
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changeset
|
539 return revinfo |
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changeset
|
540 |
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diff
changeset
|
541 |
45637
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diff
changeset
|
542 def _combine_changeset_copies_extra( |
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changeset
|
543 revs, children, targetrev, revinfo, match, isancestor |
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changeset
|
544 ): |
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changeset
|
545 """version of `_combine_changeset_copies` that works with the Google |
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changeset
|
546 specific "extra" based storage for copy information""" |
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|
547 all_copies = {} |
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changeset
|
548 alwaysmatch = match.always() |
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changeset
|
549 for r in revs: |
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changeset
|
550 copies = all_copies.pop(r, None) |
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changeset
|
551 if copies is None: |
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|
552 # this is a root |
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changeset
|
553 copies = {} |
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diff
changeset
|
554 for i, c in enumerate(children[r]): |
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|
555 p1, p2, p1copies, p2copies, removed, ismerged = revinfo(c) |
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|
556 if r == p1: |
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|
557 parent = 1 |
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changeset
|
558 childcopies = p1copies |
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|
559 else: |
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changeset
|
560 assert r == p2 |
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|
561 parent = 2 |
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|
562 childcopies = p2copies |
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|
563 if not alwaysmatch: |
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changeset
|
564 childcopies = { |
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changeset
|
565 dst: src for dst, src in childcopies.items() if match(dst) |
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changeset
|
566 } |
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diff
changeset
|
567 newcopies = copies |
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diff
changeset
|
568 if childcopies: |
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diff
changeset
|
569 newcopies = copies.copy() |
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diff
changeset
|
570 for dest, source in pycompat.iteritems(childcopies): |
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changeset
|
571 prev = copies.get(source) |
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changeset
|
572 if prev is not None and prev[1] is not None: |
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diff
changeset
|
573 source = prev[1] |
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diff
changeset
|
574 newcopies[dest] = (c, source) |
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diff
changeset
|
575 assert newcopies is not copies |
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diff
changeset
|
576 for f in removed: |
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copies: make two version of the changeset centric algorithm
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diff
changeset
|
577 if f in newcopies: |
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copies: make two version of the changeset centric algorithm
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diff
changeset
|
578 if newcopies is copies: |
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diff
changeset
|
579 # copy on write to avoid affecting potential other |
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diff
changeset
|
580 # branches. when there are no other branches, this |
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diff
changeset
|
581 # could be avoided. |
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582 newcopies = copies.copy() |
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583 newcopies[f] = (c, None) |
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584 othercopies = all_copies.get(c) |
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585 if othercopies is None: |
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586 all_copies[c] = newcopies |
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587 else: |
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588 # we are the second parent to work on c, we need to merge our |
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589 # work with the other. |
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590 # |
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591 # In case of conflict, parent 1 take precedence over parent 2. |
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592 # This is an arbitrary choice made anew when implementing |
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593 # changeset based copies. It was made without regards with |
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|
594 # potential filelog related behavior. |
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595 if parent == 1: |
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|
596 _merge_copies_dict_extra( |
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|
597 othercopies, newcopies, isancestor, ismerged |
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598 ) |
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599 else: |
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600 _merge_copies_dict_extra( |
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601 newcopies, othercopies, isancestor, ismerged |
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602 ) |
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|
603 all_copies[c] = newcopies |
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|
604 |
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605 final_copies = {} |
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606 for dest, (tt, source) in all_copies[targetrev].items(): |
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607 if source is not None: |
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608 final_copies[dest] = source |
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|
609 return final_copies |
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610 |
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611 |
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612 def _merge_copies_dict_extra(minor, major, isancestor, ismerged): |
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613 """version of `_merge_copies_dict` that works with the Google |
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|
614 specific "extra" based storage for copy information""" |
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615 for dest, value in major.items(): |
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616 other = minor.get(dest) |
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617 if other is None: |
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618 minor[dest] = value |
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619 else: |
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|
620 new_tt = value[0] |
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621 other_tt = other[0] |
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622 if value[1] == other[1]: |
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|
623 continue |
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624 # content from "major" wins, unless it is older |
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625 # than the branch point or there is a merge |
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|
626 if ( |
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627 new_tt == other_tt |
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628 or not isancestor(new_tt, other_tt) |
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629 or ismerged(dest) |
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630 ): |
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631 minor[dest] = value |
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632 |
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633 |
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634 def _forwardcopies(a, b, base=None, match=None): |
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|
635 """find {dst@b: src@a} copy mapping where a is an ancestor of b""" |
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636 |
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637 if base is None: |
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|
638 base = a |
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|
639 match = a.repo().narrowmatch(match) |
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640 # check for working copy |
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641 if b.rev() is None: |
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|
642 cm = _committedforwardcopies(a, b.p1(), base, match) |
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|
643 # combine copies from dirstate if necessary |
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|
644 copies = _chain(cm, _dirstatecopies(b._repo, match)) |
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645 else: |
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646 copies = _committedforwardcopies(a, b, base, match) |
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647 return copies |
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648 |
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649 |
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650 def _backwardrenames(a, b, match): |
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651 if a._repo.ui.config(b'experimental', b'copytrace') == b'off': |
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652 return {} |
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|
653 |
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654 # Even though we're not taking copies into account, 1:n rename situations |
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655 # can still exist (e.g. hg cp a b; hg mv a c). In those cases we |
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656 # arbitrarily pick one of the renames. |
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657 # We don't want to pass in "match" here, since that would filter |
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658 # the destination by it. Since we're reversing the copies, we want |
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659 # to filter the source instead. |
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660 f = _forwardcopies(b, a) |
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661 r = {} |
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662 for k, v in sorted(pycompat.iteritems(f)): |
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663 if match and not match(v): |
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664 continue |
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665 # remove copies |
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666 if v in a: |
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667 continue |
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668 r[v] = k |
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669 return r |
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670 |
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671 |
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672 def pathcopies(x, y, match=None): |
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|
673 """find {dst@y: src@x} copy mapping for directed compare""" |
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|
674 repo = x._repo |
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675 debug = repo.ui.debugflag and repo.ui.configbool(b'devel', b'debug.copies') |
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|
676 if debug: |
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|
677 repo.ui.debug( |
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|
678 b'debug.copies: searching copies from %s to %s\n' % (x, y) |
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679 ) |
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680 if x == y or not x or not y: |
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|
681 return {} |
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|
682 if y.rev() is None and x == y.p1(): |
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|
683 if debug: |
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|
684 repo.ui.debug(b'debug.copies: search mode: dirstate\n') |
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|
685 # short-circuit to avoid issues with merge states |
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|
686 return _dirstatecopies(repo, match) |
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687 a = y.ancestor(x) |
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688 if a == x: |
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689 if debug: |
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690 repo.ui.debug(b'debug.copies: search mode: forward\n') |
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691 copies = _forwardcopies(x, y, match=match) |
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692 elif a == y: |
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693 if debug: |
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694 repo.ui.debug(b'debug.copies: search mode: backward\n') |
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695 copies = _backwardrenames(x, y, match=match) |
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696 else: |
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697 if debug: |
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698 repo.ui.debug(b'debug.copies: search mode: combined\n') |
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699 base = None |
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700 if a.rev() != nullrev: |
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701 base = x |
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702 copies = _chain( |
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703 _backwardrenames(x, a, match=match), |
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704 _forwardcopies(a, y, base, match=match), |
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705 ) |
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706 _filter(x, y, copies) |
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707 return copies |
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708 |
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709 |
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710 def mergecopies(repo, c1, c2, base): |
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711 """ |
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712 Finds moves and copies between context c1 and c2 that are relevant for |
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713 merging. 'base' will be used as the merge base. |
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714 |
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715 Copytracing is used in commands like rebase, merge, unshelve, etc to merge |
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716 files that were moved/ copied in one merge parent and modified in another. |
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717 For example: |
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718 |
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719 o ---> 4 another commit |
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720 | |
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721 | o ---> 3 commit that modifies a.txt |
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722 | / |
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723 o / ---> 2 commit that moves a.txt to b.txt |
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724 |/ |
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725 o ---> 1 merge base |
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726 |
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727 If we try to rebase revision 3 on revision 4, since there is no a.txt in |
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728 revision 4, and if user have copytrace disabled, we prints the following |
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729 message: |
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730 |
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731 ```other changed <file> which local deleted``` |
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732 |
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733 Returns a tuple where: |
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734 |
44199
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735 "branch_copies" an instance of branch_copies. |
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copies: separate moves via directory renames from explicit copies
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|
736 |
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737 "diverge" is a mapping of source name -> list of destination names |
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738 for divergent renames. |
16794
98687cdddcb1
merge: warn about file deleted in one branch and renamed in other (issue3074)
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|
739 |
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740 This function calls different copytracing algorithms based on config. |
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741 """ |
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742 # avoid silly behavior for update from empty dir |
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743 if not c1 or not c2 or c1 == c2: |
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744 return branch_copies(), branch_copies(), {} |
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745 |
41752
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746 narrowmatch = c1.repo().narrowmatch() |
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747 |
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748 # avoid silly behavior for parent -> working dir |
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a8d13ee0ce68
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749 if c2.node() is None and c1.node() == repo.dirstate.p1(): |
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750 return ( |
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751 branch_copies(_dirstatecopies(repo, narrowmatch)), |
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752 branch_copies(), |
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753 {}, |
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|
754 ) |
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|
755 |
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756 copytracing = repo.ui.config(b'experimental', b'copytrace') |
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|
757 if stringutil.parsebool(copytracing) is False: |
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758 # stringutil.parsebool() returns None when it is unable to parse the |
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759 # value, so we should rely on making sure copytracing is on such cases |
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760 return branch_copies(), branch_copies(), {} |
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|
761 |
42226
a6be3af3a397
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Martin von Zweigbergk <martinvonz@google.com>
parents:
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diff
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|
762 if usechangesetcentricalgo(repo): |
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|
763 # The heuristics don't make sense when we need changeset-centric algos |
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764 return _fullcopytracing(repo, c1, c2, base) |
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|
765 |
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copy: add flag for disabling copy tracing
Durham Goode <durham@fb.com>
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diff
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766 # Copy trace disabling is explicitly below the node == p1 logic above |
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copy: add flag for disabling copy tracing
Durham Goode <durham@fb.com>
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diff
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|
767 # because the logic above is required for a simple copy to be kept across a |
38f92d12357c
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768 # rebase. |
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769 if copytracing == b'heuristics': |
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770 # Do full copytracing if only non-public revisions are involved as |
d00910b286cd
copytrace: use ctx.mutable() instead of adhoc constant of non-public phases
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771 # that will be fast enough and will also cover the copies which could |
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772 # be missed by heuristics |
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773 if _isfullcopytraceable(repo, c1, base): |
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774 return _fullcopytracing(repo, c1, c2, base) |
34179
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775 return _heuristicscopytracing(repo, c1, c2, base) |
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776 else: |
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777 return _fullcopytracing(repo, c1, c2, base) |
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778 |
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779 |
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780 def _isfullcopytraceable(repo, c1, base): |
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781 """Checks that if base, source and destination are all no-public branches, |
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782 if yes let's use the full copytrace algorithm for increased capabilities |
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783 since it will be fast enough. |
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|
784 |
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785 `experimental.copytrace.sourcecommitlimit` can be used to set a limit for |
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786 number of changesets from c1 to base such that if number of changesets are |
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787 more than the limit, full copytracing algorithm won't be used. |
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788 """ |
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|
789 if c1.rev() is None: |
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790 c1 = c1.p1() |
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791 if c1.mutable() and base.mutable(): |
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792 sourcecommitlimit = repo.ui.configint( |
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793 b'experimental', b'copytrace.sourcecommitlimit' |
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794 ) |
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795 commits = len(repo.revs(b'%d::%d', base.rev(), c1.rev())) |
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796 return commits < sourcecommitlimit |
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797 return False |
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798 |
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799 |
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800 def _checksinglesidecopies( |
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801 src, dsts1, m1, m2, mb, c2, base, copy, renamedelete |
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802 ): |
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803 if src not in m2: |
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804 # deleted on side 2 |
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805 if src not in m1: |
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806 # renamed on side 1, deleted on side 2 |
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807 renamedelete[src] = dsts1 |
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808 elif src not in mb: |
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809 # Work around the "short-circuit to avoid issues with merge states" |
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810 # thing in pathcopies(): pathcopies(x, y) can return a copy where the |
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811 # destination doesn't exist in y. |
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|
812 pass |
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|
813 elif mb[src] != m2[src] and not _related(c2[src], base[src]): |
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814 return |
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815 elif mb[src] != m2[src] or mb.flags(src) != m2.flags(src): |
42222
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816 # modified on side 2 |
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817 for dst in dsts1: |
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818 copy[dst] = src |
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819 |
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820 |
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821 class branch_copies(object): |
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822 """Information about copies made on one side of a merge/graft. |
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823 |
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824 "copy" is a mapping from destination name -> source name, |
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825 where source is in c1 and destination is in c2 or vice-versa. |
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826 |
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827 "movewithdir" is a mapping from source name -> destination name, |
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828 where the file at source present in one context but not the other |
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829 needs to be moved to destination by the merge process, because the |
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830 other context moved the directory it is in. |
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831 |
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832 "renamedelete" is a mapping of source name -> list of destination |
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833 names for files deleted in c1 that were renamed in c2 or vice-versa. |
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834 |
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835 "dirmove" is a mapping of detected source dir -> destination dir renames. |
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836 This is needed for handling changes to new files previously grafted into |
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837 renamed directories. |
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838 """ |
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839 |
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840 def __init__( |
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841 self, copy=None, renamedelete=None, dirmove=None, movewithdir=None |
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842 ): |
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843 self.copy = {} if copy is None else copy |
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844 self.renamedelete = {} if renamedelete is None else renamedelete |
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845 self.dirmove = {} if dirmove is None else dirmove |
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846 self.movewithdir = {} if movewithdir is None else movewithdir |
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847 |
44994
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|
848 def __repr__(self): |
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|
849 return '<branch_copies\n copy=%r\n renamedelete=%r\n dirmove=%r\n movewithdir=%r\n>' % ( |
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850 self.copy, |
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851 self.renamedelete, |
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|
852 self.dirmove, |
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|
853 self.movewithdir, |
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|
854 ) |
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|
855 |
44199
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|
856 |
34078
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|
857 def _fullcopytracing(repo, c1, c2, base): |
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|
858 """The full copytracing algorithm which finds all the new files that were |
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|
859 added from merge base up to the top commit and for each file it checks if |
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|
860 this file was copied from another file. |
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|
861 |
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|
862 This is pretty slow when a lot of changesets are involved but will track all |
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863 the copies. |
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864 """ |
6274
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|
865 m1 = c1.manifest() |
f3f383efbeae
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diff
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|
866 m2 = c2.manifest() |
30186
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|
867 mb = base.manifest() |
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|
868 |
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869 copies1 = pathcopies(base, c1) |
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870 copies2 = pathcopies(base, c2) |
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871 |
44162
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872 if not (copies1 or copies2): |
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873 return branch_copies(), branch_copies(), {} |
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|
874 |
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875 inversecopies1 = {} |
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876 inversecopies2 = {} |
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877 for dst, src in copies1.items(): |
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878 inversecopies1.setdefault(src, []).append(dst) |
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879 for dst, src in copies2.items(): |
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880 inversecopies2.setdefault(src, []).append(dst) |
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881 |
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882 copy1 = {} |
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883 copy2 = {} |
42222
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|
884 diverge = {} |
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885 renamedelete1 = {} |
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|
886 renamedelete2 = {} |
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887 allsources = set(inversecopies1) | set(inversecopies2) |
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888 for src in allsources: |
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889 dsts1 = inversecopies1.get(src) |
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|
890 dsts2 = inversecopies2.get(src) |
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|
891 if dsts1 and dsts2: |
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892 # copied/renamed on both sides |
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893 if src not in m1 and src not in m2: |
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|
894 # renamed on both sides |
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|
895 dsts1 = set(dsts1) |
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896 dsts2 = set(dsts2) |
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897 # If there's some overlap in the rename destinations, we |
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898 # consider it not divergent. For example, if side 1 copies 'a' |
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|
899 # to 'b' and 'c' and deletes 'a', and side 2 copies 'a' to 'c' |
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|
900 # and 'd' and deletes 'a'. |
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901 if dsts1 & dsts2: |
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902 for dst in dsts1 & dsts2: |
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|
903 copy1[dst] = src |
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|
904 copy2[dst] = src |
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Martin von Zweigbergk <martinvonz@google.com>
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|
905 else: |
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|
906 diverge[src] = sorted(dsts1 | dsts2) |
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|
907 elif src in m1 and src in m2: |
57203e0210f8
copies: calculate mergecopies() based on pathcopies()
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|
908 # copied on both sides |
57203e0210f8
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|
909 dsts1 = set(dsts1) |
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|
910 dsts2 = set(dsts2) |
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|
911 for dst in dsts1 & dsts2: |
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|
912 copy1[dst] = src |
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|
913 copy2[dst] = src |
42222
57203e0210f8
copies: calculate mergecopies() based on pathcopies()
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|
914 # TODO: Handle cases where it was renamed on one side and copied |
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|
915 # on the other side |
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|
916 elif dsts1: |
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copies: calculate mergecopies() based on pathcopies()
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|
917 # copied/renamed only on side 1 |
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|
918 _checksinglesidecopies( |
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|
919 src, dsts1, m1, m2, mb, c2, base, copy1, renamedelete1 |
43076
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|
920 ) |
42222
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|
921 elif dsts2: |
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|
922 # copied/renamed only on side 2 |
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|
923 _checksinglesidecopies( |
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|
924 src, dsts2, m2, m1, mb, c1, base, copy2, renamedelete2 |
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|
925 ) |
42222
57203e0210f8
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|
926 |
26659
df66736a128e
copies: group bothnew with other sets
Matt Mackall <mpm@selenic.com>
parents:
26658
diff
changeset
|
927 # find interesting file sets from manifests |
46109
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Kyle Lippincott <spectral@google.com>
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|
928 cache = [] |
2f357d053df2
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|
929 |
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|
930 def _get_addedfiles(idx): |
2f357d053df2
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|
931 if not cache: |
2f357d053df2
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|
932 addedinm1 = m1.filesnotin(mb, repo.narrowmatch()) |
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|
933 addedinm2 = m2.filesnotin(mb, repo.narrowmatch()) |
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|
934 u1 = sorted(addedinm1 - addedinm2) |
2f357d053df2
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|
935 u2 = sorted(addedinm2 - addedinm1) |
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|
936 cache.extend((u1, u2)) |
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|
937 return cache[idx] |
42223
d69bc8ffbe6f
copies: inline _computenonoverlap() in mergecopies()
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diff
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|
938 |
46109
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|
939 u1fn = lambda: _get_addedfiles(0) |
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|
940 u2fn = lambda: _get_addedfiles(1) |
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|
941 if repo.ui.debugflag: |
2f357d053df2
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|
942 u1 = u1fn() |
2f357d053df2
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|
943 u2 = u2fn() |
6274
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|
944 |
46109
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|
945 header = b" unmatched files in %s" |
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|
946 if u1: |
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|
947 repo.ui.debug( |
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|
948 b"%s:\n %s\n" % (header % b'local', b"\n ".join(u1)) |
2f357d053df2
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|
949 ) |
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|
950 if u2: |
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|
951 repo.ui.debug( |
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|
952 b"%s:\n %s\n" % (header % b'other', b"\n ".join(u2)) |
2f357d053df2
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|
953 ) |
2f357d053df2
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|
954 |
44163
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|
955 renamedeleteset = set() |
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|
956 divergeset = set() |
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|
957 for dsts in diverge.values(): |
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|
958 divergeset.update(dsts) |
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|
959 for dsts in renamedelete1.values(): |
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|
960 renamedeleteset.update(dsts) |
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|
961 for dsts in renamedelete2.values(): |
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|
962 renamedeleteset.update(dsts) |
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|
963 |
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|
964 repo.ui.debug( |
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|
965 b" all copies found (* = to merge, ! = divergent, " |
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|
966 b"% = renamed and deleted):\n" |
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|
967 ) |
44197
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|
968 for side, copies in ((b"local", copies1), (b"remote", copies2)): |
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|
969 if not copies: |
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|
970 continue |
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|
971 repo.ui.debug(b" on %s side:\n" % side) |
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|
972 for f in sorted(copies): |
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|
973 note = b"" |
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|
974 if f in copy1 or f in copy2: |
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|
975 note += b"*" |
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|
976 if f in divergeset: |
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|
977 note += b"!" |
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|
978 if f in renamedeleteset: |
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|
979 note += b"%" |
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|
980 repo.ui.debug( |
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|
981 b" src: '%s' -> dst: '%s' %s\n" % (copies[f], f, note) |
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|
982 ) |
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|
983 del renamedeleteset |
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|
984 del divergeset |
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changeset
|
985 |
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|
986 repo.ui.debug(b" checking for directory renames\n") |
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|
987 |
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|
988 dirmove1, movewithdir2 = _dir_renames(repo, c1, copy1, copies1, u2fn) |
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|
989 dirmove2, movewithdir1 = _dir_renames(repo, c2, copy2, copies2, u1fn) |
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|
990 |
44200
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diff
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|
991 branch_copies1 = branch_copies(copy1, renamedelete1, dirmove1, movewithdir1) |
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|
992 branch_copies2 = branch_copies(copy2, renamedelete2, dirmove2, movewithdir2) |
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|
993 |
44200
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|
994 return branch_copies1, branch_copies2, diverge |
44164
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|
995 |
45192589555c
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|
996 |
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|
997 def _dir_renames(repo, ctx, copy, fullcopy, addedfilesfn): |
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|
998 """Finds moved directories and files that should move with them. |
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|
999 |
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|
1000 ctx: the context for one of the sides |
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|
1001 copy: files copied on the same side (as ctx) |
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|
1002 fullcopy: files copied on the same side (as ctx), including those that |
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|
1003 merge.manifestmerge() won't care about |
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1004 addedfilesfn: function returning added files on the other side (compared to |
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|
1005 ctx) |
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|
1006 """ |
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|
1007 # generate a directory move map |
17055
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16795
diff
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|
1008 invalid = set() |
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|
1009 dirmove = {} |
f3f383efbeae
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|
1010 |
f3f383efbeae
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|
1011 # examine each file copy for a potential directory move, which is |
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changeset
|
1012 # when all the files in a directory are moved to a new directory |
43106
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43077
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|
1013 for dst, src in pycompat.iteritems(fullcopy): |
25282
0f28815ef066
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Durham Goode <durham@fb.com>
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24782
diff
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|
1014 dsrc, ddst = pathutil.dirname(src), pathutil.dirname(dst) |
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1015 if dsrc in invalid: |
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1016 # already seen to be uninteresting |
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1017 continue |
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1018 elif ctx.hasdir(dsrc) and ctx.hasdir(ddst): |
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1019 # directory wasn't entirely moved locally |
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1020 invalid.add(dsrc) |
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1021 elif dsrc in dirmove and dirmove[dsrc] != ddst: |
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1022 # files from the same directory moved to two different places |
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1023 invalid.add(dsrc) |
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1024 else: |
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1025 # looks good so far |
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1026 dirmove[dsrc] = ddst |
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1027 |
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1028 for i in invalid: |
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1029 if i in dirmove: |
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|
1030 del dirmove[i] |
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1031 del invalid |
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1032 |
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1033 if not dirmove: |
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1034 return {}, {} |
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1035 |
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1036 dirmove = {k + b"/": v + b"/" for k, v in pycompat.iteritems(dirmove)} |
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1037 |
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1038 for d in dirmove: |
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1039 repo.ui.debug( |
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1040 b" discovered dir src: '%s' -> dst: '%s'\n" % (d, dirmove[d]) |
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1041 ) |
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1042 |
30183
0106f93ca1d5
checkcopies: move 'movewithdir' initialisation right before its usage
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parents:
30138
diff
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|
1043 movewithdir = {} |
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1044 # check unaccounted nonoverlapping files against directory moves |
46109
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diff
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|
1045 for f in addedfilesfn(): |
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1046 if f not in fullcopy: |
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|
1047 for d in dirmove: |
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1048 if f.startswith(d): |
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1049 # new file added in a directory that was moved, move it |
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1050 df = dirmove[d] + f[len(d) :] |
6426
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1051 if df not in copy: |
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parents:
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diff
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|
1052 movewithdir[f] = df |
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1053 repo.ui.debug( |
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|
1054 b" pending file src: '%s' -> dst: '%s'\n" |
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|
1055 % (f, df) |
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1056 ) |
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|
1057 break |
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1058 |
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1059 return dirmove, movewithdir |
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diff
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|
1060 |
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1061 |
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1062 def _heuristicscopytracing(repo, c1, c2, base): |
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1063 """Fast copytracing using filename heuristics |
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1064 |
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1065 Assumes that moves or renames are of following two types: |
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1066 |
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1067 1) Inside a directory only (same directory name but different filenames) |
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1068 2) Move from one directory to another |
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1069 (same filenames but different directory names) |
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1070 |
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1071 Works only when there are no merge commits in the "source branch". |
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1072 Source branch is commits from base up to c2 not including base. |
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1073 |
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1074 If merge is involved it fallbacks to _fullcopytracing(). |
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1075 |
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1076 Can be used by setting the following config: |
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1077 |
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1078 [experimental] |
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1079 copytrace = heuristics |
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1080 |
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1081 In some cases the copy/move candidates found by heuristics can be very large |
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1082 in number and that will make the algorithm slow. The number of possible |
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1083 candidates to check can be limited by using the config |
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1084 `experimental.copytrace.movecandidateslimit` which defaults to 100. |
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1085 """ |
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1086 |
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1087 if c1.rev() is None: |
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1088 c1 = c1.p1() |
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1089 if c2.rev() is None: |
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1090 c2 = c2.p1() |
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1091 |
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1092 changedfiles = set() |
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1093 m1 = c1.manifest() |
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1094 if not repo.revs(b'%d::%d', base.rev(), c2.rev()): |
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1095 # If base is not in c2 branch, we switch to fullcopytracing |
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1096 repo.ui.debug( |
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1097 b"switching to full copytracing as base is not " |
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1098 b"an ancestor of c2\n" |
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1099 ) |
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1100 return _fullcopytracing(repo, c1, c2, base) |
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1101 |
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1102 ctx = c2 |
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1103 while ctx != base: |
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1104 if len(ctx.parents()) == 2: |
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1105 # To keep things simple let's not handle merges |
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1106 repo.ui.debug(b"switching to full copytracing because of merges\n") |
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1107 return _fullcopytracing(repo, c1, c2, base) |
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1108 changedfiles.update(ctx.files()) |
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1109 ctx = ctx.p1() |
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1110 |
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1111 copies2 = {} |
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1112 cp = _forwardcopies(base, c2) |
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1113 for dst, src in pycompat.iteritems(cp): |
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1114 if src in m1: |
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1115 copies2[dst] = src |
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1116 |
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1117 # file is missing if it isn't present in the destination, but is present in |
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1118 # the base and present in the source. |
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1119 # Presence in the base is important to exclude added files, presence in the |
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1120 # source is important to exclude removed files. |
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1121 filt = lambda f: f not in m1 and f in base and f in c2 |
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1122 missingfiles = [f for f in changedfiles if filt(f)] |
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1123 |
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1124 copies1 = {} |
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1125 if missingfiles: |
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1126 basenametofilename = collections.defaultdict(list) |
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1127 dirnametofilename = collections.defaultdict(list) |
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1128 |
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1129 for f in m1.filesnotin(base.manifest()): |
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1130 basename = os.path.basename(f) |
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1131 dirname = os.path.dirname(f) |
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1132 basenametofilename[basename].append(f) |
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1133 dirnametofilename[dirname].append(f) |
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1134 |
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1135 for f in missingfiles: |
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1136 basename = os.path.basename(f) |
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1137 dirname = os.path.dirname(f) |
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1138 samebasename = basenametofilename[basename] |
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1139 samedirname = dirnametofilename[dirname] |
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1140 movecandidates = samebasename + samedirname |
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1141 # f is guaranteed to be present in c2, that's why |
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1142 # c2.filectx(f) won't fail |
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1143 f2 = c2.filectx(f) |
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1144 # we can have a lot of candidates which can slow down the heuristics |
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1145 # config value to limit the number of candidates moves to check |
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1146 maxcandidates = repo.ui.configint( |
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1147 b'experimental', b'copytrace.movecandidateslimit' |
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1148 ) |
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1149 |
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1150 if len(movecandidates) > maxcandidates: |
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1151 repo.ui.status( |
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1152 _( |
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1153 b"skipping copytracing for '%s', more " |
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1154 b"candidates than the limit: %d\n" |
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1155 ) |
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1156 % (f, len(movecandidates)) |
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1157 ) |
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1158 continue |
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1159 |
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1160 for candidate in movecandidates: |
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1161 f1 = c1.filectx(candidate) |
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1162 if _related(f1, f2): |
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1163 # if there are a few related copies then we'll merge |
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1164 # changes into all of them. This matches the behaviour |
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1165 # of upstream copytracing |
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1166 copies1[candidate] = f |
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1167 |
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1168 return branch_copies(copies1), branch_copies(copies2), {} |
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1169 |
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1170 |
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1171 def _related(f1, f2): |
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1172 """return True if f1 and f2 filectx have a common ancestor |
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1173 |
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1174 Walk back to common ancestor to see if the two files originate |
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1175 from the same file. Since workingfilectx's rev() is None it messes |
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1176 up the integer comparison logic, hence the pre-step check for |
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1177 None (f1 and f2 can only be workingfilectx's initially). |
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1178 """ |
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1179 |
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1180 if f1 == f2: |
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1181 return True # a match |
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1182 |
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1183 g1, g2 = f1.ancestors(), f2.ancestors() |
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1184 try: |
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1185 f1r, f2r = f1.linkrev(), f2.linkrev() |
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1186 |
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1187 if f1r is None: |
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1188 f1 = next(g1) |
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1189 if f2r is None: |
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1190 f2 = next(g2) |
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1191 |
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1192 while True: |
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1193 f1r, f2r = f1.linkrev(), f2.linkrev() |
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1194 if f1r > f2r: |
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1195 f1 = next(g1) |
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1196 elif f2r > f1r: |
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1197 f2 = next(g2) |
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1198 else: # f1 and f2 point to files in the same linkrev |
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1199 return f1 == f2 # true if they point to the same file |
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1200 except StopIteration: |
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1201 return False |
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1202 |
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1203 |
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1204 def graftcopies(wctx, ctx, base): |
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1205 """reproduce copies between base and ctx in the wctx |
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1206 |
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1207 Unlike mergecopies(), this function will only consider copies between base |
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1208 and ctx; it will ignore copies between base and wctx. Also unlike |
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1209 mergecopies(), this function will apply copies to the working copy (instead |
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1210 of just returning information about the copies). That makes it cheaper |
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1211 (especially in the common case of base==ctx.p1()) and useful also when |
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1212 experimental.copytrace=off. |
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1213 |
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1214 merge.update() will have already marked most copies, but it will only |
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1215 mark copies if it thinks the source files are related (see |
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1216 merge._related()). It will also not mark copies if the file wasn't modified |
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1217 on the local side. This function adds the copies that were "missed" |
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1218 by merge.update(). |
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1219 """ |
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1220 new_copies = pathcopies(base, ctx) |
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1221 _filter(wctx.p1(), wctx, new_copies) |
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1222 for dst, src in pycompat.iteritems(new_copies): |
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1223 wctx[dst].markcopied(src) |