Mercurial > public > mercurial-scm > hg

annotate mercurial/policy.py @ 45892:06b64fabf91c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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 61e7464477ac
children 12450fbea288
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
1 # policy.py - module policy logic for Mercurial.
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
2 #
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
3 # Copyright 2015 Gregory Szorc <gregory.szorc@gmail.com>
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
4 #
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
5 # This software may be used and distributed according to the terms of the
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
6 # GNU General Public License version 2 or any later version.
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
7
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
8 from __future__ import absolute_import
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
9
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
10 import os
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
11 import sys
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
12
43089
c59eb1560c44 py3: manually import getattr where it is needed
Gregory Szorc <gregory.szorc@gmail.com>
parents: 43075
diff changeset
13 from .pycompat import getattr
c59eb1560c44 py3: manually import getattr where it is needed
Gregory Szorc <gregory.szorc@gmail.com>
parents: 43075
diff changeset
14
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
15 # Rules for how modules can be loaded. Values are:
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
16 #
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
17 # c - require C extensions
42451
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
18 # rust+c - require Rust and C extensions
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
19 # rust+c-allow - allow Rust and C extensions with fallback to pure Python
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
20 # for each
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
21 # allow - allow pure Python implementation when C loading fails
29490
b4d117cee636 policy: add cffi policy for PyPy
Maciej Fijalkowski <fijall@gmail.com>
parents: 29266
diff changeset
22 # cffi - required cffi versions (implemented within pure module)
b4d117cee636 policy: add cffi policy for PyPy
Maciej Fijalkowski <fijall@gmail.com>
parents: 29266
diff changeset
23 # cffi-allow - allow pure Python implementation if cffi version is missing
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
24 # py - only load pure Python modules
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
25 #
32251
a04f5c651e52 policy: relax the default for in-place build
Yuya Nishihara <yuya@tcha.org>
parents: 32210
diff changeset
26 # By default, fall back to the pure modules so the in-place build can
a04f5c651e52 policy: relax the default for in-place build
Yuya Nishihara <yuya@tcha.org>
parents: 32210
diff changeset
27 # run without recompiling the C extensions. This will be overridden by
a04f5c651e52 policy: relax the default for in-place build
Yuya Nishihara <yuya@tcha.org>
parents: 32210
diff changeset
28 # __modulepolicy__ generated by setup.py.
a04f5c651e52 policy: relax the default for in-place build
Yuya Nishihara <yuya@tcha.org>
parents: 32210
diff changeset
29 policy = b'allow'
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
30 _packageprefs = {
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
31 # policy: (versioned package, pure package)
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
32 b'c': ('cext', None),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
33 b'allow': ('cext', 'pure'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
34 b'cffi': ('cffi', None),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
35 b'cffi-allow': ('cffi', 'pure'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
36 b'py': (None, 'pure'),
42451
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
37 # For now, rust policies impact importrust only
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
38 b'rust+c': ('cext', None),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
39 b'rust+c-allow': ('cext', 'pure'),
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
40 }
29490
b4d117cee636 policy: add cffi policy for PyPy
Maciej Fijalkowski <fijall@gmail.com>
parents: 29266
diff changeset
41
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
42 try:
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
43 from . import __modulepolicy__
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
44
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
45 policy = __modulepolicy__.modulepolicy
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
46 except ImportError:
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
47 pass
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
48
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
49 # PyPy doesn't load C extensions.
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
50 #
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
51 # The canonical way to do this is to test platform.python_implementation().
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
52 # But we don't import platform and don't bloat for it here.
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
53 if '__pypy__' in sys.builtin_module_names:
32210
56148133ef36 policy: mark all string literals as sysstr or bytes
Yuya Nishihara <yuya@tcha.org>
parents: 31361
diff changeset
54 policy = b'cffi'
29266
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
55
b3a677c82a35 debuginstall: expose modulepolicy
timeless <timeless@mozdev.org>
parents:
diff changeset
56 # Environment variable can always force settings.
31361
8a17c541177f py3: add "b" prefix to string literals related to module policy
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 31308
diff changeset
57 if sys.version_info[0] >= 3:
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
58 if 'HGMODULEPOLICY' in os.environ:
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
59 policy = os.environ['HGMODULEPOLICY'].encode('utf-8')
31361
8a17c541177f py3: add "b" prefix to string literals related to module policy
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents: 31308
diff changeset
60 else:
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
61 policy = os.environ.get('HGMODULEPOLICY', policy)
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
62
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
63
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
64 def _importfrom(pkgname, modname):
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
65 # from .<pkgname> import <modname> (where . is looked through this module)
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
66 fakelocals = {}
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
67 pkg = __import__(pkgname, globals(), fakelocals, [modname], level=1)
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
68 try:
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
69 fakelocals[modname] = mod = getattr(pkg, modname)
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
70 except AttributeError:
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
71 raise ImportError('cannot import name %s' % modname)
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
72 # force import; fakelocals[modname] may be replaced with the real module
43103
c95b2f40db7c py3: stop normalizing 2nd argument of *attr() to unicode
Gregory Szorc <gregory.szorc@gmail.com>
parents: 43089
diff changeset
73 getattr(mod, '__doc__', None)
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
74 return fakelocals[modname]
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
75
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
76
32428
28b773aa3ff2 policy: define C module versions individually
Jun Wu <quark@fb.com>
parents: 32366
diff changeset
77 # keep in sync with "version" in C modules
28b773aa3ff2 policy: define C module versions individually
Jun Wu <quark@fb.com>
parents: 32366
diff changeset
78 _cextversions = {
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
79 ('cext', 'base85'): 1,
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
80 ('cext', 'bdiff'): 3,
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
81 ('cext', 'mpatch'): 1,
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
82 ('cext', 'osutil'): 4,
45131
61e7464477ac phases: sparsify phaseroots and phasesets
Joerg Sonnenberger <joerg@bec.de>
parents: 43554
diff changeset
83 ('cext', 'parsers'): 17,
32428
28b773aa3ff2 policy: define C module versions individually
Jun Wu <quark@fb.com>
parents: 32366
diff changeset
84 }
28b773aa3ff2 policy: define C module versions individually
Jun Wu <quark@fb.com>
parents: 32366
diff changeset
85
33760
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
86 # map import request to other package or module
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
87 _modredirects = {
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
88 ('cext', 'charencode'): ('cext', 'parsers'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
89 ('cffi', 'base85'): ('pure', 'base85'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
90 ('cffi', 'charencode'): ('pure', 'charencode'),
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
91 ('cffi', 'parsers'): ('pure', 'parsers'),
33760
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
92 }
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
93
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
94
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
95 def _checkmod(pkgname, modname, mod):
32511
2e431fb98c6b policy: extend API version checks for cffi
Yuya Nishihara <yuya@tcha.org>
parents: 32428
diff changeset
96 expected = _cextversions.get((pkgname, modname))
43103
c95b2f40db7c py3: stop normalizing 2nd argument of *attr() to unicode
Gregory Szorc <gregory.szorc@gmail.com>
parents: 43089
diff changeset
97 actual = getattr(mod, 'version', None)
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
98 if actual != expected:
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
99 raise ImportError(
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
100 'cannot import module %s.%s '
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
101 '(expected version: %d, actual: %r)'
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
102 % (pkgname, modname, expected, actual)
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
103 )
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
104
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
105
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
106 def importmod(modname):
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
107 """Import module according to policy and check API version"""
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
108 try:
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
109 verpkg, purepkg = _packageprefs[policy]
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
110 except KeyError:
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
111 raise ImportError('invalid HGMODULEPOLICY %r' % policy)
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
112 assert verpkg or purepkg
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
113 if verpkg:
33760
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
114 pn, mn = _modredirects.get((verpkg, modname), (verpkg, modname))
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
115 try:
33760
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
116 mod = _importfrom(pn, mn)
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
117 if pn == verpkg:
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
118 _checkmod(pn, mn, mod)
32366
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
119 return mod
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
120 except ImportError:
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
121 if not purepkg:
8e0327dae3f4 policy: add helper to import cext/pure module
Yuya Nishihara <yuya@tcha.org>
parents: 32251
diff changeset
122 raise
33760
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
123 pn, mn = _modredirects.get((purepkg, modname), (purepkg, modname))
cd2aca0808f8 policy: reroute proxy modules internally
Yuya Nishihara <yuya@tcha.org>
parents: 32514
diff changeset
124 return _importfrom(pn, mn)
42451
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
125
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
126
42451
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
127 def _isrustpermissive():
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
128 """Assuming the policy is a Rust one, tell if it's permissive."""
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
129 return policy.endswith(b'-allow')
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
130
43075
57875cf423c9 style: run a patched black on a subset of mercurial
Augie Fackler <augie@google.com>
parents: 42451
diff changeset
131
42451
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
132 def importrust(modname, member=None, default=None):
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
133 """Import Rust module according to policy and availability.
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
134
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
135 If policy isn't a Rust one, this returns `default`.
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
136
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
137 If either the module or its member is not available, this returns `default`
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
138 if policy is permissive and raises `ImportError` if not.
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
139 """
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
140 if not policy.startswith(b'rust'):
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
141 return default
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
142
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
143 try:
43506
9f70512ae2cf cleanup: remove pointless r-prefixes on single-quoted strings
Augie Fackler <augie@google.com>
parents: 43503
diff changeset
144 mod = _importfrom('rustext', modname)
42451
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
145 except ImportError:
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
146 if _isrustpermissive():
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
147 return default
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
148 raise
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
149 if member is None:
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
150 return mod
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
151
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
152 try:
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
153 return getattr(mod, member)
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
154 except AttributeError:
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
155 if _isrustpermissive():
810f66b468cd rust: module policy with importrust
Georges Racinet <georges.racinet@octobus.net>
parents: 42343
diff changeset
156 return default
43503
313e3a279828 cleanup: remove pointless r-prefixes on double-quoted strings
Augie Fackler <augie@google.com>
parents: 43103
diff changeset
157 raise ImportError("Cannot import name %s" % member)