Mercurial > hg
annotate mercurial/lsprofcalltree.py @ 23324:69f86b937035
cmdserver: protect pipe server streams against corruption caused by direct io
Because pipe-mode server uses stdio as IPC channel, other modules should not
touch stdio directly and use ui instead. However, this strategy is brittle
because several Python functions read and write stdio implicitly.
print 'hello' # should use ui.write()
# => ch = 'h', size = 1701604463 'ello', data = '\n'
This patch adds protection for such mistakes. Both stdio files and low-level
file descriptors are redirected to /dev/null while command server uses them.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Sat, 15 Nov 2014 13:50:43 +0900 |
parents | beae42f3d93b |
children | 071af8d385a9 |
rev | line source |
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1 """ |
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2 lsprofcalltree.py - lsprof output which is readable by kcachegrind |
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3 |
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4 Authors: |
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5 * David Allouche <david <at> allouche.net> |
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6 * Jp Calderone & Itamar Shtull-Trauring |
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7 * Johan Dahlin |
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8 |
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9 This software may be used and distributed according to the terms |
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10 of the GNU General Public License, incorporated herein by reference. |
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11 """ |
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12 |
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13 def label(code): |
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14 if isinstance(code, str): |
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15 return '~' + code # built-in functions ('~' sorts at the end) |
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16 else: |
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17 return '%s %s:%d' % (code.co_name, |
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18 code.co_filename, |
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19 code.co_firstlineno) |
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20 |
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21 class KCacheGrind(object): |
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22 def __init__(self, profiler): |
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23 self.data = profiler.getstats() |
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24 self.out_file = None |
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25 |
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26 def output(self, out_file): |
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27 self.out_file = out_file |
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28 print >> out_file, 'events: Ticks' |
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29 self._print_summary() |
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30 for entry in self.data: |
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31 self._entry(entry) |
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32 |
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33 def _print_summary(self): |
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34 max_cost = 0 |
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35 for entry in self.data: |
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36 totaltime = int(entry.totaltime * 1000) |
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37 max_cost = max(max_cost, totaltime) |
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38 print >> self.out_file, 'summary: %d' % (max_cost,) |
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39 |
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40 def _entry(self, entry): |
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41 out_file = self.out_file |
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42 |
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43 code = entry.code |
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44 #print >> out_file, 'ob=%s' % (code.co_filename,) |
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45 if isinstance(code, str): |
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46 print >> out_file, 'fi=~' |
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47 else: |
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48 print >> out_file, 'fi=%s' % (code.co_filename,) |
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49 print >> out_file, 'fn=%s' % (label(code),) |
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50 |
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51 inlinetime = int(entry.inlinetime * 1000) |
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52 if isinstance(code, str): |
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53 print >> out_file, '0 ', inlinetime |
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54 else: |
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55 print >> out_file, '%d %d' % (code.co_firstlineno, inlinetime) |
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56 |
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57 # recursive calls are counted in entry.calls |
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58 if entry.calls: |
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59 calls = entry.calls |
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60 else: |
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61 calls = [] |
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62 |
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63 if isinstance(code, str): |
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64 lineno = 0 |
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65 else: |
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66 lineno = code.co_firstlineno |
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67 |
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68 for subentry in calls: |
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69 self._subentry(lineno, subentry) |
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70 print >> out_file |
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71 |
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72 def _subentry(self, lineno, subentry): |
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73 out_file = self.out_file |
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74 code = subentry.code |
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75 #print >> out_file, 'cob=%s' % (code.co_filename,) |
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76 print >> out_file, 'cfn=%s' % (label(code),) |
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77 if isinstance(code, str): |
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78 print >> out_file, 'cfi=~' |
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79 print >> out_file, 'calls=%d 0' % (subentry.callcount,) |
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80 else: |
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81 print >> out_file, 'cfi=%s' % (code.co_filename,) |
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82 print >> out_file, 'calls=%d %d' % ( |
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83 subentry.callcount, code.co_firstlineno) |
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84 |
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85 totaltime = int(subentry.totaltime * 1000) |
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86 print >> out_file, '%d %d' % (lineno, totaltime) |