Mercurial > hg
annotate contrib/perf.py @ 27142:060f83d219b9
extensions: refuse to load extensions if minimum hg version not met
As the author of several 3rd party extensions, I frequently see bug
reports from users attempting to run my extension with an old version
of Mercurial that I no longer support in my extension. Oftentimes, the
extension will import just fine. But as soon as we run extsetup(),
reposetup(), or get into the guts of a wrapped function, we encounter
an exception and abort. Today, Mercurial will print a message about
extensions that don't have a "testedwith" declaring explicit
compatibility with the current version.
The existing mechanism is a good start. But it isn't as robust as I
would like. Specifically, Mercurial assumes compatibility by default.
This means extension authors must perform compatibility checking in
their extsetup() or we wait and see if we encounter an abort at
runtime. And, compatibility checking can involve a lot of code and
lots of error checking. It's a lot of effort for extension authors.
Oftentimes, extension authors know which versions of Mercurial there
extension works on and more importantly where it is broken.
This patch introduces a magic "minimumhgversion" attribute in
extensions. When found, the extension loading mechanism will compare
the declared version against the current Mercurial version. If the
extension explicitly states we require a newer Mercurial version, a
warning is printed and the extension isn't loaded beyond importing
the Python module. This causes a graceful failure while alerting
the user of the compatibility issue.
I would be receptive to the idea of making the failure more fatal.
However, care would need to be taken to not criple every hg command.
e.g. the user may use `hg config` to fix the hgrc and if we aborted
trying to run that, the user would effectively be locked out of `hg`!
A potential future improvement to this functionality would be to catch
ImportError for the extension/module and parse the source code for
"minimumhgversion = 'XXX'" and do similar checking. This way we could
give more information about why the extension failed to load.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Tue, 24 Nov 2015 15:16:25 -0800 |
parents | 8d5dba93aa4f |
children | 528cf1a73ae5 |
rev | line source |
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1 # perf.py - performance test routines |
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2 '''helper extension to measure performance''' |
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3 |
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4 from mercurial import cmdutil, scmutil, util, commands, obsolete |
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5 from mercurial import repoview, branchmap, merge, copies, error |
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6 import time, os, sys |
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7 import functools |
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8 |
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9 formatteropts = commands.formatteropts |
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10 |
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11 cmdtable = {} |
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12 command = cmdutil.command(cmdtable) |
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13 |
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14 def gettimer(ui, opts=None): |
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15 """return a timer function and formatter: (timer, formatter) |
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16 |
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17 This functions exist to gather the creation of formatter in a single |
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18 place instead of duplicating it in all performance command.""" |
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19 |
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20 # enforce an idle period before execution to counteract power management |
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21 # experimental config: perf.presleep |
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22 time.sleep(ui.configint("perf", "presleep", 1)) |
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23 |
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24 if opts is None: |
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25 opts = {} |
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26 # redirect all to stderr |
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27 ui = ui.copy() |
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28 ui.fout = ui.ferr |
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29 # get a formatter |
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30 fm = ui.formatter('perf', opts) |
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31 return functools.partial(_timer, fm), fm |
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32 |
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33 def _timer(fm, func, title=None): |
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34 results = [] |
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35 begin = time.time() |
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36 count = 0 |
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37 while True: |
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38 ostart = os.times() |
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39 cstart = time.time() |
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40 r = func() |
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41 cstop = time.time() |
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42 ostop = os.times() |
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43 count += 1 |
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44 a, b = ostart, ostop |
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45 results.append((cstop - cstart, b[0] - a[0], b[1]-a[1])) |
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46 if cstop - begin > 3 and count >= 100: |
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47 break |
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48 if cstop - begin > 10 and count >= 3: |
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49 break |
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50 |
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51 fm.startitem() |
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52 |
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53 if title: |
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54 fm.write('title', '! %s\n', title) |
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55 if r: |
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56 fm.write('result', '! result: %s\n', r) |
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57 m = min(results) |
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58 fm.plain('!') |
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59 fm.write('wall', ' wall %f', m[0]) |
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60 fm.write('comb', ' comb %f', m[1] + m[2]) |
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61 fm.write('user', ' user %f', m[1]) |
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62 fm.write('sys', ' sys %f', m[2]) |
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63 fm.write('count', ' (best of %d)', count) |
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64 fm.plain('\n') |
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65 |
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66 @command('perfwalk', formatteropts) |
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67 def perfwalk(ui, repo, *pats, **opts): |
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68 timer, fm = gettimer(ui, opts) |
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69 try: |
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70 m = scmutil.match(repo[None], pats, {}) |
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71 timer(lambda: len(list(repo.dirstate.walk(m, [], True, False)))) |
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72 except Exception: |
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73 try: |
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74 m = scmutil.match(repo[None], pats, {}) |
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75 timer(lambda: len([b for a, b, c in repo.dirstate.statwalk([], m)])) |
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76 except Exception: |
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77 timer(lambda: len(list(cmdutil.walk(repo, pats, {})))) |
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78 fm.end() |
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79 |
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80 @command('perfannotate', formatteropts) |
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81 def perfannotate(ui, repo, f, **opts): |
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82 timer, fm = gettimer(ui, opts) |
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83 fc = repo['.'][f] |
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84 timer(lambda: len(fc.annotate(True))) |
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85 fm.end() |
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86 |
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87 @command('perfstatus', |
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88 [('u', 'unknown', False, |
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89 'ask status to look for unknown files')] + formatteropts) |
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90 def perfstatus(ui, repo, **opts): |
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91 #m = match.always(repo.root, repo.getcwd()) |
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93 # False)))) | |
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94 timer, fm = gettimer(ui, opts) |
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95 timer(lambda: sum(map(len, repo.status(unknown=opts['unknown'])))) |
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96 fm.end() |
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97 |
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98 @command('perfaddremove', formatteropts) |
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99 def perfaddremove(ui, repo, **opts): |
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100 timer, fm = gettimer(ui, opts) |
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101 try: |
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102 oldquiet = repo.ui.quiet |
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103 repo.ui.quiet = True |
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104 matcher = scmutil.match(repo[None]) |
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105 timer(lambda: scmutil.addremove(repo, matcher, "", dry_run=True)) |
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106 finally: |
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107 repo.ui.quiet = oldquiet |
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108 fm.end() |
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109 |
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110 def clearcaches(cl): |
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111 # behave somewhat consistently across internal API changes |
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112 if util.safehasattr(cl, 'clearcaches'): |
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113 cl.clearcaches() |
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114 elif util.safehasattr(cl, '_nodecache'): |
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115 from mercurial.node import nullid, nullrev |
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116 cl._nodecache = {nullid: nullrev} |
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117 cl._nodepos = None |
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118 |
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119 @command('perfheads', formatteropts) |
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120 def perfheads(ui, repo, **opts): |
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121 timer, fm = gettimer(ui, opts) |
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122 cl = repo.changelog |
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123 def d(): |
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124 len(cl.headrevs()) |
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125 clearcaches(cl) |
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126 timer(d) |
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127 fm.end() |
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128 |
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129 @command('perftags', formatteropts) |
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130 def perftags(ui, repo, **opts): |
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131 import mercurial.changelog |
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132 import mercurial.manifest |
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133 timer, fm = gettimer(ui, opts) |
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134 def t(): |
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135 repo.changelog = mercurial.changelog.changelog(repo.svfs) |
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136 repo.manifest = mercurial.manifest.manifest(repo.svfs) |
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137 repo._tags = None |
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138 return len(repo.tags()) |
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139 timer(t) |
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140 fm.end() |
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141 |
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142 @command('perfancestors', formatteropts) |
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143 def perfancestors(ui, repo, **opts): |
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144 timer, fm = gettimer(ui, opts) |
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145 heads = repo.changelog.headrevs() |
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146 def d(): |
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147 for a in repo.changelog.ancestors(heads): |
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148 pass |
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149 timer(d) |
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150 fm.end() |
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151 |
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152 @command('perfancestorset', formatteropts) |
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153 def perfancestorset(ui, repo, revset, **opts): |
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154 timer, fm = gettimer(ui, opts) |
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155 revs = repo.revs(revset) |
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156 heads = repo.changelog.headrevs() |
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157 def d(): |
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158 s = repo.changelog.ancestors(heads) |
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159 for rev in revs: |
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160 rev in s |
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161 timer(d) |
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162 fm.end() |
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163 |
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164 @command('perfdirs', formatteropts) |
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165 def perfdirs(ui, repo, **opts): |
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166 timer, fm = gettimer(ui, opts) |
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167 dirstate = repo.dirstate |
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168 'a' in dirstate |
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169 def d(): |
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170 dirstate.dirs() |
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171 del dirstate._dirs |
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172 timer(d) |
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173 fm.end() |
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174 |
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175 @command('perfdirstate', formatteropts) |
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176 def perfdirstate(ui, repo, **opts): |
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177 timer, fm = gettimer(ui, opts) |
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178 "a" in repo.dirstate |
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179 def d(): |
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180 repo.dirstate.invalidate() |
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181 "a" in repo.dirstate |
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182 timer(d) |
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183 fm.end() |
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184 |
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185 @command('perfdirstatedirs', formatteropts) |
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186 def perfdirstatedirs(ui, repo, **opts): |
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187 timer, fm = gettimer(ui, opts) |
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188 "a" in repo.dirstate |
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189 def d(): |
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190 "a" in repo.dirstate._dirs |
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191 del repo.dirstate._dirs |
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192 timer(d) |
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193 fm.end() |
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194 |
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195 @command('perfdirstatefoldmap', formatteropts) |
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196 def perfdirstatefoldmap(ui, repo, **opts): |
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197 timer, fm = gettimer(ui, opts) |
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198 dirstate = repo.dirstate |
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199 'a' in dirstate |
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200 def d(): |
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201 dirstate._filefoldmap.get('a') |
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202 del dirstate._filefoldmap |
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203 timer(d) |
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204 fm.end() |
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205 |
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206 @command('perfdirfoldmap', formatteropts) |
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207 def perfdirfoldmap(ui, repo, **opts): |
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208 timer, fm = gettimer(ui, opts) |
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209 dirstate = repo.dirstate |
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210 'a' in dirstate |
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211 def d(): |
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212 dirstate._dirfoldmap.get('a') |
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213 del dirstate._dirfoldmap |
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214 del dirstate._dirs |
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215 timer(d) |
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216 fm.end() |
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217 |
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218 @command('perfdirstatewrite', formatteropts) |
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219 def perfdirstatewrite(ui, repo, **opts): |
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220 timer, fm = gettimer(ui, opts) |
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221 ds = repo.dirstate |
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222 "a" in ds |
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223 def d(): |
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224 ds._dirty = True |
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225 ds.write(repo.currenttransaction()) |
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226 timer(d) |
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227 fm.end() |
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228 |
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229 @command('perfmergecalculate', |
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230 [('r', 'rev', '.', 'rev to merge against')] + formatteropts) |
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231 def perfmergecalculate(ui, repo, rev, **opts): |
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232 timer, fm = gettimer(ui, opts) |
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233 wctx = repo[None] |
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234 rctx = scmutil.revsingle(repo, rev, rev) |
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235 ancestor = wctx.ancestor(rctx) |
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236 # we don't want working dir files to be stat'd in the benchmark, so prime |
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237 # that cache |
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238 wctx.dirty() |
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239 def d(): |
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240 # acceptremote is True because we don't want prompts in the middle of |
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241 # our benchmark |
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242 merge.calculateupdates(repo, wctx, rctx, [ancestor], False, False, |
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243 False, acceptremote=True, followcopies=True) |
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244 timer(d) |
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245 fm.end() |
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246 |
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247 @command('perfpathcopies', [], "REV REV") |
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248 def perfpathcopies(ui, repo, rev1, rev2, **opts): |
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249 timer, fm = gettimer(ui, opts) |
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250 ctx1 = scmutil.revsingle(repo, rev1, rev1) |
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251 ctx2 = scmutil.revsingle(repo, rev2, rev2) |
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252 def d(): |
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253 copies.pathcopies(ctx1, ctx2) |
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254 timer(d) |
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255 fm.end() |
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256 |
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257 @command('perfmanifest', [], 'REV') |
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258 def perfmanifest(ui, repo, rev, **opts): |
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259 timer, fm = gettimer(ui, opts) |
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260 ctx = scmutil.revsingle(repo, rev, rev) |
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261 t = ctx.manifestnode() |
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262 def d(): |
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263 repo.manifest._mancache.clear() |
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264 repo.manifest._cache = None |
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265 repo.manifest.read(t) |
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266 timer(d) |
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267 fm.end() |
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268 |
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269 @command('perfchangeset', formatteropts) |
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270 def perfchangeset(ui, repo, rev, **opts): |
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271 timer, fm = gettimer(ui, opts) |
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272 n = repo[rev].node() |
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273 def d(): |
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274 repo.changelog.read(n) |
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275 #repo.changelog._cache = None |
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276 timer(d) |
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277 fm.end() |
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278 |
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279 @command('perfindex', formatteropts) |
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280 def perfindex(ui, repo, **opts): |
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281 import mercurial.revlog |
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282 timer, fm = gettimer(ui, opts) |
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283 mercurial.revlog._prereadsize = 2**24 # disable lazy parser in old hg |
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284 n = repo["tip"].node() |
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285 def d(): |
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286 cl = mercurial.revlog.revlog(repo.svfs, "00changelog.i") |
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287 cl.rev(n) |
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288 timer(d) |
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289 fm.end() |
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290 |
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291 @command('perfstartup', formatteropts) |
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292 def perfstartup(ui, repo, **opts): |
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293 timer, fm = gettimer(ui, opts) |
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294 cmd = sys.argv[0] |
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295 def d(): |
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296 os.system("HGRCPATH= %s version -q > /dev/null" % cmd) |
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297 timer(d) |
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298 fm.end() |
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299 |
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300 @command('perfparents', formatteropts) |
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301 def perfparents(ui, repo, **opts): |
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302 timer, fm = gettimer(ui, opts) |
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303 if len(repo.changelog) < 1000: |
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304 raise error.Abort("repo needs 1000 commits for this test") |
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305 repo = repo.unfiltered() |
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306 nl = [repo.changelog.node(i) for i in xrange(1000)] |
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307 def d(): |
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308 for n in nl: |
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309 repo.changelog.parents(n) |
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310 timer(d) |
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311 fm.end() |
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312 |
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313 @command('perfctxfiles', formatteropts) |
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314 def perfctxfiles(ui, repo, x, **opts): |
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315 x = int(x) |
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316 timer, fm = gettimer(ui, opts) |
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317 def d(): |
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318 len(repo[x].files()) |
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319 timer(d) |
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320 fm.end() |
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321 |
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322 @command('perfrawfiles', formatteropts) |
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323 def perfrawfiles(ui, repo, x, **opts): |
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324 x = int(x) |
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325 timer, fm = gettimer(ui, opts) |
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326 cl = repo.changelog |
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327 def d(): |
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328 len(cl.read(x)[3]) |
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329 timer(d) |
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330 fm.end() |
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331 |
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332 @command('perflookup', formatteropts) |
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333 def perflookup(ui, repo, rev, **opts): |
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334 timer, fm = gettimer(ui, opts) |
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335 timer(lambda: len(repo.lookup(rev))) |
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336 fm.end() |
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337 |
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338 @command('perfrevrange', formatteropts) |
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339 def perfrevrange(ui, repo, *specs, **opts): |
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340 timer, fm = gettimer(ui, opts) |
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341 revrange = scmutil.revrange |
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342 timer(lambda: len(revrange(repo, specs))) |
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343 fm.end() |
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344 |
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345 @command('perfnodelookup', formatteropts) |
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346 def perfnodelookup(ui, repo, rev, **opts): |
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347 timer, fm = gettimer(ui, opts) |
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349 mercurial.revlog._prereadsize = 2**24 # disable lazy parser in old hg | |
350 n = repo[rev].node() | |
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351 cl = mercurial.revlog.revlog(repo.svfs, "00changelog.i") |
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352 def d(): |
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353 cl.rev(n) |
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354 clearcaches(cl) |
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355 timer(d) |
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356 fm.end() |
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357 |
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358 @command('perflog', |
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359 [('', 'rename', False, 'ask log to follow renames')] + formatteropts) |
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360 def perflog(ui, repo, **opts): |
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361 timer, fm = gettimer(ui, opts) |
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362 ui.pushbuffer() |
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363 timer(lambda: commands.log(ui, repo, rev=[], date='', user='', |
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364 copies=opts.get('rename'))) |
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365 ui.popbuffer() |
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366 fm.end() |
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367 |
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368 @command('perfmoonwalk', formatteropts) |
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369 def perfmoonwalk(ui, repo, **opts): |
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370 """benchmark walking the changelog backwards |
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371 |
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372 This also loads the changelog data for each revision in the changelog. |
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373 """ |
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374 timer, fm = gettimer(ui, opts) |
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375 def moonwalk(): |
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376 for i in xrange(len(repo), -1, -1): |
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377 ctx = repo[i] |
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378 ctx.branch() # read changelog data (in addition to the index) |
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379 timer(moonwalk) |
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380 fm.end() |
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381 |
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382 @command('perftemplating', formatteropts) |
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383 def perftemplating(ui, repo, **opts): |
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384 timer, fm = gettimer(ui, opts) |
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385 ui.pushbuffer() |
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386 timer(lambda: commands.log(ui, repo, rev=[], date='', user='', |
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387 template='{date|shortdate} [{rev}:{node|short}]' |
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388 ' {author|person}: {desc|firstline}\n')) |
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389 ui.popbuffer() |
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390 fm.end() |
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391 |
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392 @command('perfcca', formatteropts) |
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393 def perfcca(ui, repo, **opts): |
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394 timer, fm = gettimer(ui, opts) |
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395 timer(lambda: scmutil.casecollisionauditor(ui, False, repo.dirstate)) |
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396 fm.end() |
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397 |
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398 @command('perffncacheload', formatteropts) |
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399 def perffncacheload(ui, repo, **opts): |
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400 timer, fm = gettimer(ui, opts) |
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401 s = repo.store |
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402 def d(): |
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403 s.fncache._load() |
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404 timer(d) |
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405 fm.end() |
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406 |
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407 @command('perffncachewrite', formatteropts) |
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408 def perffncachewrite(ui, repo, **opts): |
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409 timer, fm = gettimer(ui, opts) |
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410 s = repo.store |
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411 s.fncache._load() |
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412 lock = repo.lock() |
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413 tr = repo.transaction('perffncachewrite') |
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414 def d(): |
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415 s.fncache._dirty = True |
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416 s.fncache.write(tr) |
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417 timer(d) |
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418 lock.release() |
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419 fm.end() |
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420 |
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421 @command('perffncacheencode', formatteropts) |
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422 def perffncacheencode(ui, repo, **opts): |
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423 timer, fm = gettimer(ui, opts) |
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424 s = repo.store |
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425 s.fncache._load() |
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426 def d(): |
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427 for p in s.fncache.entries: |
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428 s.encode(p) |
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429 timer(d) |
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430 fm.end() |
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431 |
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432 @command('perfdiffwd', formatteropts) |
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433 def perfdiffwd(ui, repo, **opts): |
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434 """Profile diff of working directory changes""" |
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435 timer, fm = gettimer(ui, opts) |
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436 options = { |
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437 'w': 'ignore_all_space', |
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438 'b': 'ignore_space_change', |
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439 'B': 'ignore_blank_lines', |
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440 } |
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441 |
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442 for diffopt in ('', 'w', 'b', 'B', 'wB'): |
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443 opts = dict((options[c], '1') for c in diffopt) |
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444 def d(): |
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445 ui.pushbuffer() |
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446 commands.diff(ui, repo, **opts) |
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447 ui.popbuffer() |
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448 title = 'diffopts: %s' % (diffopt and ('-' + diffopt) or 'none') |
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449 timer(d, title) |
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450 fm.end() |
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451 |
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452 @command('perfrevlog', |
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453 [('d', 'dist', 100, 'distance between the revisions')] + formatteropts, |
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454 "[INDEXFILE]") |
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455 def perfrevlog(ui, repo, file_, **opts): |
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456 timer, fm = gettimer(ui, opts) |
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457 from mercurial import revlog |
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458 dist = opts['dist'] |
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459 def d(): |
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460 r = revlog.revlog(lambda fn: open(fn, 'rb'), file_) |
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461 for x in xrange(0, len(r), dist): |
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462 r.revision(r.node(x)) |
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463 |
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464 timer(d) |
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465 fm.end() |
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466 |
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467 @command('perfrevset', |
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468 [('C', 'clear', False, 'clear volatile cache between each call.'), |
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469 ('', 'contexts', False, 'obtain changectx for each revision')] |
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470 + formatteropts, "REVSET") |
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471 def perfrevset(ui, repo, expr, clear=False, contexts=False, **opts): |
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472 """benchmark the execution time of a revset |
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473 |
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474 Use the --clean option if need to evaluate the impact of build volatile |
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475 revisions set cache on the revset execution. Volatile cache hold filtered |
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476 and obsolete related cache.""" |
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477 timer, fm = gettimer(ui, opts) |
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478 def d(): |
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479 if clear: |
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480 repo.invalidatevolatilesets() |
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481 if contexts: |
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482 for ctx in repo.set(expr): pass |
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483 else: |
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484 for r in repo.revs(expr): pass |
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485 timer(d) |
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486 fm.end() |
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487 |
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488 @command('perfvolatilesets', formatteropts) |
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489 def perfvolatilesets(ui, repo, *names, **opts): |
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490 """benchmark the computation of various volatile set |
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491 |
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492 Volatile set computes element related to filtering and obsolescence.""" |
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493 timer, fm = gettimer(ui, opts) |
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494 repo = repo.unfiltered() |
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495 |
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496 def getobs(name): |
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497 def d(): |
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498 repo.invalidatevolatilesets() |
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499 obsolete.getrevs(repo, name) |
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500 return d |
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501 |
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502 allobs = sorted(obsolete.cachefuncs) |
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503 if names: |
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504 allobs = [n for n in allobs if n in names] |
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505 |
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506 for name in allobs: |
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507 timer(getobs(name), title=name) |
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508 |
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509 def getfiltered(name): |
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510 def d(): |
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511 repo.invalidatevolatilesets() |
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512 repoview.filterrevs(repo, name) |
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513 return d |
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514 |
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515 allfilter = sorted(repoview.filtertable) |
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516 if names: |
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517 allfilter = [n for n in allfilter if n in names] |
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518 |
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519 for name in allfilter: |
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520 timer(getfiltered(name), title=name) |
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521 fm.end() |
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522 |
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523 @command('perfbranchmap', |
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524 [('f', 'full', False, |
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525 'Includes build time of subset'), |
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526 ] + formatteropts) |
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527 def perfbranchmap(ui, repo, full=False, **opts): |
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528 """benchmark the update of a branchmap |
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529 |
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530 This benchmarks the full repo.branchmap() call with read and write disabled |
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531 """ |
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532 timer, fm = gettimer(ui, opts) |
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533 def getbranchmap(filtername): |
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534 """generate a benchmark function for the filtername""" |
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535 if filtername is None: |
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536 view = repo |
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537 else: |
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538 view = repo.filtered(filtername) |
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539 def d(): |
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540 if full: |
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541 view._branchcaches.clear() |
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542 else: |
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543 view._branchcaches.pop(filtername, None) |
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544 view.branchmap() |
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545 return d |
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546 # add filter in smaller subset to bigger subset |
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547 possiblefilters = set(repoview.filtertable) |
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548 allfilters = [] |
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549 while possiblefilters: |
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550 for name in possiblefilters: |
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551 subset = branchmap.subsettable.get(name) |
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552 if subset not in possiblefilters: |
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553 break |
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554 else: |
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555 assert False, 'subset cycle %s!' % possiblefilters |
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556 allfilters.append(name) |
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557 possiblefilters.remove(name) |
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558 |
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559 # warm the cache |
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560 if not full: |
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561 for name in allfilters: |
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562 repo.filtered(name).branchmap() |
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563 # add unfiltered |
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564 allfilters.append(None) |
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565 oldread = branchmap.read |
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566 oldwrite = branchmap.branchcache.write |
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567 try: |
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568 branchmap.read = lambda repo: None |
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569 branchmap.write = lambda repo: None |
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570 for name in allfilters: |
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571 timer(getbranchmap(name), title=str(name)) |
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572 finally: |
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573 branchmap.read = oldread |
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574 branchmap.branchcache.write = oldwrite |
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575 fm.end() |
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576 |
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577 @command('perfloadmarkers') |
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578 def perfloadmarkers(ui, repo): |
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579 """benchmark the time to parse the on-disk markers for a repo |
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580 |
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581 Result is the number of markers in the repo.""" |
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582 timer, fm = gettimer(ui) |
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583 timer(lambda: len(obsolete.obsstore(repo.svfs))) |
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584 fm.end() |