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annotate mercurial/interfaces/dirstate.py @ 45892:06b64fabf91c

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copies: cache the ancestor checking call when tracing copy A good share of the time spent in this function is spent doing ancestors checking. To avoid spending time in duplicated call, we cache the result of calls. In the slower case, this provide a quite significant performance boost. Below are the result for a set of selected pairs (many of them pathological): (And further down is another table that summarize the current state of filelog based vs changeset base copy tracing) The benchmark have been configured to be killed after 6 minutes of runtime, which mean that any detect slower than 2 minutes will be marked as "killed". This drop some useful information about how much slower these case are? but also prevent 99% of the benchmark time to be spent on case that can be labelled "very slow" anyway. Repo Case Source-Rev Dest-Rev Old-Time New-Time Difference Factor ------------------------------------------------------------------------------------------------------------------------------------ mercurial x_revs_x_added_0_copies ad6b123de1c7 39cfcef4f463 : 0.000044 s, 0.000044 s, +0.000000 s, ? 1.0000 mercurial x_revs_x_added_x_copies 2b1c78674230 0c1d10351869 : 0.000138 s, 0.000138 s, +0.000000 s, ? 1.0000 mercurial x000_revs_x000_added_x_copies 81f8ff2a9bf2 dd3267698d84 : 0.005067 s, 0.005052 s, -0.000015 s, ? 0.9970 pypy x_revs_x_added_0_copies aed021ee8ae8 099ed31b181b : 0.000218 s, 0.000219 s, +0.000001 s, ? 1.0046 pypy x_revs_x000_added_0_copies 4aa4e1f8e19a 359343b9ac0e : 0.000053 s, 0.000055 s, +0.000002 s, ? 1.0377 pypy x_revs_x_added_x_copies ac52eb7bbbb0 72e022663155 : 0.000125 s, 0.000128 s, +0.000003 s, ? 1.0240 pypy x_revs_x00_added_x_copies c3b14617fbd7 ace7255d9a26 : 0.001098 s, 0.001089 s, -0.000009 s, ? 0.9918 pypy x_revs_x000_added_x000_copies df6f7a526b60 a83dc6a2d56f : 0.017546 s, 0.017407 s, -0.000139 s, ? 0.9921 pypy x000_revs_xx00_added_0_copies 89a76aede314 2f22446ff07e : 0.096723 s, 0.094175 s, -0.002548 s, ? 0.9737 pypy x000_revs_x000_added_x_copies 8a3b5bfd266e 2c68e87c3efe : 0.271796 s, 0.238009 s, -0.033787 s, ? 0.8757 pypy x000_revs_x000_added_x000_copies 89a76aede314 7b3dda341c84 : 0.128602 s, 0.125876 s, -0.002726 s, ? 0.9788 pypy x0000_revs_x_added_0_copies d1defd0dc478 c9cb1334cc78 : 7.086742 s, 3.581556 s, -3.505186 s, ? 0.5054 pypy x0000_revs_xx000_added_0_copies bf2c629d0071 4ffed77c095c : 0.016634 s, 0.016721 s, +0.000087 s, ? 1.0052 pypy x0000_revs_xx000_added_x000_copies 08ea3258278e d9fa043f30c0 : 0.254225 s, 0.242367 s, -0.011858 s, ? 0.9534 netbeans x_revs_x_added_0_copies fb0955ffcbcd a01e9239f9e7 : 0.000166 s, 0.000165 s, -0.000001 s, ? 0.9940 netbeans x_revs_x000_added_0_copies 6f360122949f 20eb231cc7d0 : 0.000118 s, 0.000114 s, -0.000004 s, ? 0.9661 netbeans x_revs_x_added_x_copies 1ada3faf6fb6 5a39d12eecf4 : 0.000296 s, 0.000296 s, +0.000000 s, ? 1.0000 netbeans x_revs_x00_added_x_copies 35be93ba1e2c 9eec5e90c05f : 0.001137 s, 0.001124 s, -0.000013 s, ? 0.9886 netbeans x000_revs_xx00_added_0_copies eac3045b4fdd 51d4ae7f1290 : 0.014133 s, 0.013060 s, -0.001073 s, ? 0.9241 netbeans x000_revs_x000_added_x_copies e2063d266acd 6081d72689dc : 0.016988 s, 0.017112 s, +0.000124 s, ? 1.0073 netbeans x000_revs_x000_added_x000_copies ff453e9fee32 411350406ec2 : 0.676361 s, 0.660350 s, -0.016011 s, ? 0.9763 netbeans x0000_revs_xx000_added_x000_copies 588c2d1ced70 1aad62e59ddd : 12.515149 s, 10.032499 s, -2.482650 s, ? 0.8016 mozilla-central x_revs_x_added_0_copies 3697f962bb7b 7015fcdd43a2 : 0.000186 s, 0.000189 s, +0.000003 s, ? 1.0161 mozilla-central x_revs_x000_added_0_copies dd390860c6c9 40d0c5bed75d : 0.000459 s, 0.000462 s, +0.000003 s, ? 1.0065 mozilla-central x_revs_x_added_x_copies 8d198483ae3b 14207ffc2b2f : 0.000273 s, 0.000270 s, -0.000003 s, ? 0.9890 mozilla-central x_revs_x00_added_x_copies 98cbc58cc6bc 446a150332c3 : 0.001503 s, 0.001474 s, -0.000029 s, ? 0.9807 mozilla-central x_revs_x000_added_x000_copies 3c684b4b8f68 0a5e72d1b479 : 0.004862 s, 0.004806 s, -0.000056 s, ? 0.9885 mozilla-central x_revs_x0000_added_x0000_copies effb563bb7e5 c07a39dc4e80 : 0.088291 s, 0.085150 s, -0.003141 s, ? 0.9644 mozilla-central x000_revs_xx00_added_0_copies 6100d773079a 04a55431795e : 0.007113 s, 0.007064 s, -0.000049 s, ? 0.9931 mozilla-central x000_revs_x000_added_x_copies 9f17a6fc04f9 2d37b966abed : 0.004687 s, 0.004741 s, +0.000054 s, ? 1.0115 mozilla-central x000_revs_x000_added_x000_copies 7c97034feb78 4407bd0c6330 : 0.198710 s, 0.190133 s, -0.008577 s, ? 0.9568 mozilla-central x0000_revs_xx000_added_0_copies 9eec5917337d 67118cc6dcad : 0.036068 s, 0.035651 s, -0.000417 s, ? 0.9884 mozilla-central x0000_revs_xx000_added_x000_copies f78c615a656c 96a38b690156 : 0.465362 s, 0.440694 s, -0.024668 s, ? 0.9470 mozilla-central x00000_revs_x0000_added_x0000_copies 6832ae71433c 4c222a1d9a00 : 24.519684 s, 18.454163 s, -6.065521 s, ? 0.7526 mozilla-central x00000_revs_x00000_added_x000_copies 76caed42cf7c 1daa622bbe42 : 42.711897 s, 31.562719 s, -11.149178 s, ? 0.7390 mozilla-try x_revs_x_added_0_copies aaf6dde0deb8 9790f499805a : 0.001201 s, 0.001189 s, -0.000012 s, ? 0.9900 mozilla-try x_revs_x000_added_0_copies d8d0222927b4 5bb8ce8c7450 : 0.001216 s, 0.001204 s, -0.000012 s, ? 0.9901 mozilla-try x_revs_x_added_x_copies 092fcca11bdb 936255a0384a : 0.000595 s, 0.000586 s, -0.000009 s, ? 0.9849 mozilla-try x_revs_x00_added_x_copies b53d2fadbdb5 017afae788ec : 0.001856 s, 0.001845 s, -0.000011 s, ? 0.9941 mozilla-try x_revs_x000_added_x000_copies 20408ad61ce5 6f0ee96e21ad : 0.064936 s, 0.063822 s, -0.001114 s, ? 0.9828 mozilla-try x_revs_x0000_added_x0000_copies effb563bb7e5 c07a39dc4e80 : 0.090601 s, 0.088038 s, -0.002563 s, ? 0.9717 mozilla-try x000_revs_xx00_added_0_copies 6100d773079a 04a55431795e : 0.007510 s, 0.007389 s, -0.000121 s, ? 0.9839 mozilla-try x000_revs_x000_added_x_copies 9f17a6fc04f9 2d37b966abed : 0.004911 s, 0.004868 s, -0.000043 s, ? 0.9912 mozilla-try x000_revs_x000_added_x000_copies 1346fd0130e4 4c65cbdabc1f : 0.233231 s, 0.222450 s, -0.010781 s, ? 0.9538 mozilla-try x0000_revs_x_added_0_copies 63519bfd42ee a36a2a865d92 : 0.419989 s, 0.370675 s, -0.049314 s, ? 0.8826 mozilla-try x0000_revs_x_added_x_copies 9fe69ff0762d bcabf2a78927 : 0.401521 s, 0.358020 s, -0.043501 s, ? 0.8917 mozilla-try x0000_revs_xx000_added_x_copies 156f6e2674f2 4d0f2c178e66 : 0.179555 s, 0.145235 s, -0.034320 s, ? 0.8089 mozilla-try x0000_revs_xx000_added_0_copies 9eec5917337d 67118cc6dcad : 0.038004 s, 0.037606 s, -0.000398 s, ? 0.9895 mozilla-try x0000_revs_xx000_added_x000_copies 89294cd501d9 7ccb2fc7ccb5 : 52.838482 s, 7.382439 s, -45.456043 s, ? 0.1397 mozilla-try x0000_revs_x0000_added_x0000_copies e928c65095ed e951f4ad123a : 8.705874 s, 7.273506 s, -1.432368 s, ? 0.8355 mozilla-try x00000_revs_x00000_added_0_copies dc8a3ca7010e d16fde900c9c : 1.126708 s, 1.074593 s, -0.052115 s, ? 0.9537 mozilla-try x00000_revs_x0000_added_x0000_copies 8d3fafa80d4b eb884023b810 : 83.854020 s, 27.746195 s, -56.107825 s, ? 0.3309 Below is a table comparing the runtime of the current "filelog centric" algorithm, with the "changeset centric" one, we just modified. The changeset centric algorithm is a significant win in many scenario, but they are still various cases where it is quite slower. When many revision has to be considered the cost of retrieving the copy information, creating new dictionaries, merging dictionaries and checking if revision are ancestors of each other can slow things down. The rest of this series, will introduce a rust version of the copy tracing code to deal with most of theses issues. Repo Case Source-Rev Dest-Rev filelog sidedata Difference Factor --------------------------------------------------------------------------------------------------------------------------------------- mercurial x_revs_x_added_0_copies ad6b123de1c7 39cfcef4f463 : 0.000914 s, 0.000044 s, - 0.000870 s, ? 0.048140 mercurial x_revs_x_added_x_copies 2b1c78674230 0c1d10351869 : 0.001812 s, 0.000138 s, - 0.001674 s, ? 0.076159 mercurial x000_revs_x000_added_x_copies 81f8ff2a9bf2 dd3267698d84 : 0.017954 s, 0.005052 s, - 0.012902 s, ? 0.281386 pypy x_revs_x_added_0_copies aed021ee8ae8 099ed31b181b : 0.001509 s, 0.000219 s, - 0.001290 s, ? 0.145129 pypy x_revs_x000_added_0_copies 4aa4e1f8e19a 359343b9ac0e : 0.206881 s, 0.000055 s, - 0.206826 s, ? 0.000266 pypy x_revs_x_added_x_copies ac52eb7bbbb0 72e022663155 : 0.016951 s, 0.000128 s, - 0.016823 s, ? 0.007551 pypy x_revs_x00_added_x_copies c3b14617fbd7 ace7255d9a26 : 0.019096 s, 0.001089 s, - 0.018007 s, ? 0.057028 pypy x_revs_x000_added_x000_copies df6f7a526b60 a83dc6a2d56f : 0.762506 s, 0.017407 s, - 0.745099 s, ? 0.022829 pypy x000_revs_xx00_added_0_copies 89a76aede314 2f22446ff07e : 1.179211 s, 0.094175 s, - 1.085036 s, ? 0.079863 pypy x000_revs_x000_added_x_copies 8a3b5bfd266e 2c68e87c3efe : 1.249058 s, 0.238009 s, - 1.011049 s, ? 0.190551 pypy x000_revs_x000_added_x000_copies 89a76aede314 7b3dda341c84 : 1.614107 s, 0.125876 s, - 1.488231 s, ? 0.077985 pypy x0000_revs_x_added_0_copies d1defd0dc478 c9cb1334cc78 : 0.001064 s, 3.581556 s, + 3.580492 s, ? 3366.124060 pypy x0000_revs_xx000_added_0_copies bf2c629d0071 4ffed77c095c : 1.061275 s, 0.016721 s, - 1.044554 s, ? 0.015756 pypy x0000_revs_xx000_added_x000_copies 08ea3258278e d9fa043f30c0 : 1.341119 s, 0.242367 s, - 1.098752 s, ? 0.180720 netbeans x_revs_x_added_0_copies fb0955ffcbcd a01e9239f9e7 : 0.027803 s, 0.000165 s, - 0.027638 s, ? 0.005935 netbeans x_revs_x000_added_0_copies 6f360122949f 20eb231cc7d0 : 0.130014 s, 0.000114 s, - 0.129900 s, ? 0.000877 netbeans x_revs_x_added_x_copies 1ada3faf6fb6 5a39d12eecf4 : 0.024990 s, 0.000296 s, - 0.024694 s, ? 0.011845 netbeans x_revs_x00_added_x_copies 35be93ba1e2c 9eec5e90c05f : 0.052201 s, 0.001124 s, - 0.051077 s, ? 0.021532 netbeans x000_revs_xx00_added_0_copies eac3045b4fdd 51d4ae7f1290 : 0.037642 s, 0.013060 s, - 0.024582 s, ? 0.346953 netbeans x000_revs_x000_added_x_copies e2063d266acd 6081d72689dc : 0.197086 s, 0.017112 s, - 0.179974 s, ? 0.086825 netbeans x000_revs_x000_added_x000_copies ff453e9fee32 411350406ec2 : 0.935148 s, 0.660350 s, - 0.274798 s, ? 0.706145 netbeans x0000_revs_xx000_added_x000_copies 588c2d1ced70 1aad62e59ddd : 3.920674 s, 10.032499 s, + 6.111825 s, ? 2.558871 mozilla-central x_revs_x_added_0_copies 3697f962bb7b 7015fcdd43a2 : 0.024232 s, 0.000189 s, - 0.024043 s, ? 0.007800 mozilla-central x_revs_x000_added_0_copies dd390860c6c9 40d0c5bed75d : 0.141483 s, 0.000462 s, - 0.141021 s, ? 0.003265 mozilla-central x_revs_x_added_x_copies 8d198483ae3b 14207ffc2b2f : 0.025775 s, 0.000270 s, - 0.025505 s, ? 0.010475 mozilla-central x_revs_x00_added_x_copies 98cbc58cc6bc 446a150332c3 : 0.084922 s, 0.001474 s, - 0.083448 s, ? 0.017357 mozilla-central x_revs_x000_added_x000_copies 3c684b4b8f68 0a5e72d1b479 : 0.194784 s, 0.004806 s, - 0.189978 s, ? 0.024673 mozilla-central x_revs_x0000_added_x0000_copies effb563bb7e5 c07a39dc4e80 : 2.161103 s, 0.085150 s, - 2.075953 s, ? 0.039401 mozilla-central x000_revs_xx00_added_0_copies 6100d773079a 04a55431795e : 0.089347 s, 0.007064 s, - 0.082283 s, ? 0.079063 mozilla-central x000_revs_x000_added_x_copies 9f17a6fc04f9 2d37b966abed : 0.732171 s, 0.004741 s, - 0.727430 s, ? 0.006475 mozilla-central x000_revs_x000_added_x000_copies 7c97034feb78 4407bd0c6330 : 1.157287 s, 0.190133 s, - 0.967154 s, ? 0.164292 mozilla-central x0000_revs_xx000_added_0_copies 9eec5917337d 67118cc6dcad : 6.726568 s, 0.035651 s, - 6.690917 s, ? 0.005300 mozilla-central x0000_revs_xx000_added_x000_copies f78c615a656c 96a38b690156 : 3.266229 s, 0.440694 s, - 2.825535 s, ? 0.134924 mozilla-central x00000_revs_x0000_added_x0000_copies 6832ae71433c 4c222a1d9a00 : 15.860534 s, 18.454163 s, + 2.593629 s, ? 1.163527 mozilla-central x00000_revs_x00000_added_x000_copies 76caed42cf7c 1daa622bbe42 : 20.450475 s, 31.562719 s, +11.112244 s, ? 1.543373 mozilla-try x_revs_x_added_0_copies aaf6dde0deb8 9790f499805a : 0.080442 s, 0.001189 s, - 0.079253 s, ? 0.014781 mozilla-try x_revs_x000_added_0_copies d8d0222927b4 5bb8ce8c7450 : 0.497672 s, 0.001204 s, - 0.496468 s, ? 0.002419 mozilla-try x_revs_x_added_x_copies 092fcca11bdb 936255a0384a : 0.021183 s, 0.000586 s, - 0.020597 s, ? 0.027664 mozilla-try x_revs_x00_added_x_copies b53d2fadbdb5 017afae788ec : 0.230991 s, 0.001845 s, - 0.229146 s, ? 0.007987 mozilla-try x_revs_x000_added_x000_copies 20408ad61ce5 6f0ee96e21ad : 1.118461 s, 0.063822 s, - 1.054639 s, ? 0.057062 mozilla-try x_revs_x0000_added_x0000_copies effb563bb7e5 c07a39dc4e80 : 2.206083 s, 0.088038 s, - 2.118045 s, ? 0.039907 mozilla-try x000_revs_xx00_added_0_copies 6100d773079a 04a55431795e : 0.089404 s, 0.007389 s, - 0.082015 s, ? 0.082647 mozilla-try x000_revs_x000_added_x_copies 9f17a6fc04f9 2d37b966abed : 0.733043 s, 0.004868 s, - 0.728175 s, ? 0.006641 mozilla-try x000_revs_x000_added_x000_copies 1346fd0130e4 4c65cbdabc1f : 1.163367 s, 0.222450 s, - 0.940917 s, ? 0.191212 mozilla-try x0000_revs_x_added_0_copies 63519bfd42ee a36a2a865d92 : 0.085456 s, 0.370675 s, + 0.285219 s, ? 4.337612 mozilla-try x0000_revs_x_added_x_copies 9fe69ff0762d bcabf2a78927 : 0.083601 s, 0.358020 s, + 0.274419 s, ? 4.282485 mozilla-try x0000_revs_xx000_added_x_copies 156f6e2674f2 4d0f2c178e66 : 7.366614 s, 0.145235 s, - 7.221379 s, ? 0.019715 mozilla-try x0000_revs_xx000_added_0_copies 9eec5917337d 67118cc6dcad : 6.664464 s, 0.037606 s, - 6.626858 s, ? 0.005643 mozilla-try x0000_revs_xx000_added_x000_copies 89294cd501d9 7ccb2fc7ccb5 : 7.467836 s, 7.382439 s, - 0.085397 s, ? 0.988565 mozilla-try x0000_revs_x0000_added_x0000_copies e928c65095ed e951f4ad123a : 9.801294 s, 7.273506 s, - 2.527788 s, ? 0.742097 mozilla-try x00000_revs_x_added_0_copies 6a320851d377 1ebb79acd503 : 0.091886 s, killed mozilla-try x00000_revs_x00000_added_0_copies dc8a3ca7010e d16fde900c9c : 26.491140 s, 1.074593 s, -25.416547 s, ? 0.040564 mozilla-try x00000_revs_x_added_x_copies 5173c4b6f97c 95d83ee7242d : 0.092863 s, killed mozilla-try x00000_revs_x000_added_x_copies 9126823d0e9c ca82787bb23c : 0.226823 s, killed mozilla-try x00000_revs_x0000_added_x0000_copies 8d3fafa80d4b eb884023b810 : 18.914630 s, 27.746195 s, + 8.831565 s, ? 1.466917 mozilla-try x00000_revs_x00000_added_x0000_copies 1b661134e2ca 1ae03d022d6d : 21.198903 s, killed mozilla-try x00000_revs_x00000_added_x000_copies 9b2a99adc05e 8e29777b48e6 : 24.952268 s, killed Differential Revision: https://phab.mercurial-scm.org/D9296
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Mon, 02 Nov 2020 11:03:56 +0100
parents be8552f25cab
children 89a2afe31e82
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 from __future__ import absolute_import, print_function
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3 import contextlib
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5 from .. import node as nodemod
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7 from . import util as interfaceutil
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10 class idirstate(interfaceutil.Interface):
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11 def __init__(opener, ui, root, validate, sparsematchfn):
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12 '''Create a new dirstate object.
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13
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14 opener is an open()-like callable that can be used to open the
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15 dirstate file; root is the root of the directory tracked by
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16 the dirstate.
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17 '''
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18
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19 # TODO: all these private methods and attributes should be made
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20 # public or removed from the interface.
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21 _ignore = interfaceutil.Attribute("""Matcher for ignored files.""")
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22
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23 def _ignorefiles():
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24 """Return a list of files containing patterns to ignore."""
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25
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26 def _ignorefileandline(f):
43787
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27 """Given a file `f`, return the ignore file and line that ignores it."""
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28
43008
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29 _checklink = interfaceutil.Attribute("""Callable for checking symlinks.""")
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30 _checkexec = interfaceutil.Attribute("""Callable for checking exec bits.""")
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31
42927
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32 @contextlib.contextmanager
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33 def parentchange():
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34 '''Context manager for handling dirstate parents.
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35
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36 If an exception occurs in the scope of the context manager,
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37 the incoherent dirstate won't be written when wlock is
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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38 released.
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39 '''
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40
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41 def pendingparentchange():
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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parents:
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42 '''Returns true if the dirstate is in the middle of a set of changes
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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parents:
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43 that modify the dirstate parent.
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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44 '''
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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45
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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46 def hasdir(d):
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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47 pass
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48
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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diff changeset
49 def flagfunc(buildfallback):
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50 pass
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51
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52 def getcwd():
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53 '''Return the path from which a canonical path is calculated.
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54
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55 This path should be used to resolve file patterns or to convert
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56 canonical paths back to file paths for display. It shouldn't be
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57 used to get real file paths. Use vfs functions instead.
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58 '''
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59
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60 def pathto(f, cwd=None):
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61 pass
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62
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63 def __getitem__(key):
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64 '''Return the current state of key (a filename) in the dirstate.
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65
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66 States are:
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67 n normal
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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68 m needs merging
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69 r marked for removal
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70 a marked for addition
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71 ? not tracked
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72 '''
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73
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74 def __contains__(key):
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75 """Check if bytestring `key` is known to the dirstate."""
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76
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77 def __iter__():
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78 """Iterate the dirstate's contained filenames as bytestrings."""
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79
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80 def items():
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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81 """Iterate the dirstate's entries as (filename, dirstatetuple).
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82
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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83 As usual, filename is a bytestring.
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Augie Fackler <augie@google.com>
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84 """
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85
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86 iteritems = items
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87
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88 def parents():
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Augie Fackler <augie@google.com>
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89 pass
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90
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91 def p1():
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92 pass
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93
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94 def p2():
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
Augie Fackler <augie@google.com>
parents:
diff changeset
95 pass
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parents:
diff changeset
96
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parents:
diff changeset
97 def branch():
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98 pass
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parents:
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99
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100 def setparents(p1, p2=nodemod.nullid):
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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parents:
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101 """Set dirstate parents to p1 and p2.
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
Augie Fackler <augie@google.com>
parents:
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102
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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parents:
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103 When moving from two parents to one, 'm' merged entries a
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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parents:
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104 adjusted to normal and previous copy records discarded and
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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parents:
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105 returned by the call.
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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106
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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107 See localrepo.setparents()
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108 """
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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parents:
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109
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110 def setbranch(branch):
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parents:
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111 pass
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diff changeset
112
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113 def invalidate():
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114 '''Causes the next access to reread the dirstate.
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115
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parents:
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116 This is different from localrepo.invalidatedirstate() because it always
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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117 rereads the dirstate. Use localrepo.invalidatedirstate() if you want to
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118 check whether the dirstate has changed before rereading it.'''
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119
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120 def copy(source, dest):
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121 """Mark dest as a copy of source. Unmark dest if source is None."""
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122
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123 def copied(file):
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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124 pass
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125
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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126 def copies():
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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127 pass
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128
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129 def normal(f, parentfiledata=None):
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130 '''Mark a file normal and clean.
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131
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132 parentfiledata: (mode, size, mtime) of the clean file
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133
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134 parentfiledata should be computed from memory (for mode,
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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diff changeset
135 size), as or close as possible from the point where we
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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136 determined the file was clean, to limit the risk of the
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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diff changeset
137 file having been changed by an external process between the
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
Augie Fackler <augie@google.com>
parents:
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138 moment where the file was determined to be clean and now.'''
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139 pass
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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140
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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141 def normallookup(f):
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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parents:
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142 '''Mark a file normal, but possibly dirty.'''
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143
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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144 def otherparent(f):
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parents:
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145 '''Mark as coming from the other parent, always dirty.'''
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parents:
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146
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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147 def add(f):
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148 '''Mark a file added.'''
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149
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150 def remove(f):
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151 '''Mark a file removed.'''
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152
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153 def merge(f):
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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154 '''Mark a file merged.'''
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155
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156 def drop(f):
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157 '''Drop a file from the dirstate'''
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158
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159 def normalize(path, isknown=False, ignoremissing=False):
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160 '''
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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161 normalize the case of a pathname when on a casefolding filesystem
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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162
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163 isknown specifies whether the filename came from walking the
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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164 disk, to avoid extra filesystem access.
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165
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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166 If ignoremissing is True, missing path are returned
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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167 unchanged. Otherwise, we try harder to normalize possibly
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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168 existing path components.
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169
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170 The normalized case is determined based on the following precedence:
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171
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172 - version of name already stored in the dirstate
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173 - version of name stored on disk
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174 - version provided via command arguments
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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parents:
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175 '''
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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176
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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177 def clear():
d459cd8ea42d interfaces: introduce an interface for dirstate implementations
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178 pass
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179
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180 def rebuild(parent, allfiles, changedfiles=None):
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181 pass
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182
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183 def identity():
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184 '''Return identity of dirstate it to detect changing in storage
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185
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186 If identity of previous dirstate is equal to this, writing
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187 changes based on the former dirstate out can keep consistency.
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188 '''
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189
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190 def write(tr):
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191 pass
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192
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193 def addparentchangecallback(category, callback):
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194 """add a callback to be called when the wd parents are changed
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195
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196 Callback will be called with the following arguments:
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197 dirstate, (oldp1, oldp2), (newp1, newp2)
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198
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199 Category is a unique identifier to allow overwriting an old callback
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200 with a newer callback.
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201 """
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202
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203 def walk(match, subrepos, unknown, ignored, full=True):
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204 '''
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205 Walk recursively through the directory tree, finding all files
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206 matched by match.
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207
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208 If full is False, maybe skip some known-clean files.
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209
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210 Return a dict mapping filename to stat-like object (either
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211 mercurial.osutil.stat instance or return value of os.stat()).
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212
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213 '''
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214
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215 def status(match, subrepos, ignored, clean, unknown):
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216 '''Determine the status of the working copy relative to the
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217 dirstate and return a pair of (unsure, status), where status is of type
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218 scmutil.status and:
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219
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220 unsure:
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221 files that might have been modified since the dirstate was
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222 written, but need to be read to be sure (size is the same
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223 but mtime differs)
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224 status.modified:
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225 files that have definitely been modified since the dirstate
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226 was written (different size or mode)
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227 status.clean:
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228 files that have definitely not been modified since the
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229 dirstate was written
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230 '''
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231
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232 def matches(match):
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233 '''
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234 return files in the dirstate (in whatever state) filtered by match
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235 '''
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236
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237 def savebackup(tr, backupname):
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238 '''Save current dirstate into backup file'''
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239
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240 def restorebackup(tr, backupname):
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241 '''Restore dirstate by backup file'''
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242
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243 def clearbackup(tr, backupname):
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244 '''Clear backup file'''