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1 | 1 | # __init__.py - inotify-based status acceleration for Linux |
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2 | 2 | # |
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3 | 3 | # Copyright 2006, 2007, 2008 Bryan O'Sullivan <bos@serpentine.com> |
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4 | 4 | # Copyright 2007, 2008 Brendan Cully <brendan@kublai.com> |
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5 | 5 | # |
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6 | 6 | # This software may be used and distributed according to the terms |
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7 | 7 | # of the GNU General Public License, incorporated herein by reference. |
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8 | 8 | |
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9 | 9 | '''inotify-based status acceleration for Linux systems |
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10 | 10 | ''' |
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11 | 11 | |
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12 | 12 | # todo: socket permissions |
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13 | 13 | |
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14 | 14 | from mercurial.i18n import _ |
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15 | 15 | from mercurial import cmdutil, util |
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16 | 16 | import client, errno, os, server, socket |
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17 | 17 | from weakref import proxy |
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18 | 18 | |
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19 | 19 | def serve(ui, repo, **opts): |
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20 | 20 | '''start an inotify server for this repository''' |
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21 | 21 | timeout = opts.get('timeout') |
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22 | 22 | if timeout: |
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23 | 23 | timeout = float(timeout) * 1e3 |
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24 | 24 | |
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25 | 25 | class service: |
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26 | 26 | def init(self): |
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27 | 27 | try: |
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28 | 28 | self.master = server.Master(ui, repo, timeout) |
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29 | 29 | except server.AlreadyStartedException, inst: |
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30 | 30 | raise util.Abort(str(inst)) |
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31 | 31 | |
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32 | 32 | def run(self): |
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33 | 33 | try: |
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34 | 34 | self.master.run() |
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35 | 35 | finally: |
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36 | 36 | self.master.shutdown() |
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37 | 37 | |
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38 | 38 | service = service() |
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39 | 39 | cmdutil.service(opts, initfn=service.init, runfn=service.run) |
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40 | 40 | |
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41 | 41 | def reposetup(ui, repo): |
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42 | 42 | if not hasattr(repo, 'dirstate'): |
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43 | 43 | return |
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44 | 44 | |
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45 | 45 | # XXX: weakref until hg stops relying on __del__ |
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46 | 46 | repo = proxy(repo) |
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47 | 47 | |
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48 | 48 | class inotifydirstate(repo.dirstate.__class__): |
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49 | 49 | # Set to True if we're the inotify server, so we don't attempt |
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50 | 50 | # to recurse. |
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51 | 51 | inotifyserver = False |
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52 | 52 | |
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53 | 53 | def status(self, match, ignored, clean, unknown=True): |
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54 | 54 | files = match.files() |
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55 | 55 | if '.' in files: |
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56 | 56 | files = [] |
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57 | 57 | try: |
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58 | 58 | if not ignored and not self.inotifyserver: |
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59 | 59 | result = client.query(ui, repo, files, match, False, |
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60 | 60 | clean, unknown) |
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61 | 61 | if ui.config('inotify', 'debug'): |
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62 | 62 | r2 = super(inotifydirstate, self).status( |
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63 | 63 | match, False, clean, unknown) |
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64 | 64 | for c,a,b in zip('LMARDUIC', result, r2): |
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65 | 65 | for f in a: |
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66 | 66 | if f not in b: |
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67 | 67 | ui.warn('*** inotify: %s +%s\n' % (c, f)) |
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68 | 68 | for f in b: |
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69 | 69 | if f not in a: |
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70 | 70 | ui.warn('*** inotify: %s -%s\n' % (c, f)) |
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71 | 71 | result = r2 |
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72 | 72 | |
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73 | 73 | if result is not None: |
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74 | 74 | return result |
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75 | 75 | except (OSError, socket.error), err: |
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76 | 76 | autostart = ui.configbool('inotify', 'autostart', True) |
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77 | 77 | |
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78 | 78 | if err[0] == errno.ECONNREFUSED: |
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79 | 79 | ui.warn(_('(found dead inotify server socket; ' |
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80 | 80 | 'removing it)\n')) |
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81 | 81 | os.unlink(repo.join('inotify.sock')) |
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82 | 82 | if err[0] in (errno.ECONNREFUSED, errno.ENOENT) and autostart: |
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83 | query = None | |
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84 | 83 | ui.debug(_('(starting inotify server)\n')) |
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85 | 84 | try: |
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86 | 85 | try: |
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87 | 86 | server.start(ui, repo) |
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88 | query = client.query | |
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89 | 87 | except server.AlreadyStartedException, inst: |
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90 | 88 | # another process may have started its own |
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91 | 89 | # inotify server while this one was starting. |
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92 | 90 | ui.debug(str(inst)) |
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93 | query = client.query | |
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94 | 91 | except Exception, inst: |
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95 | 92 | ui.warn(_('could not start inotify server: ' |
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96 | 93 | '%s\n') % inst) |
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97 |
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94 | else: | |
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95 | # server is started, send query again | |
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98 | 96 | try: |
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99 | return query(ui, repo, files, match, | |
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97 | return client.query(ui, repo, files, match, | |
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100 | 98 | ignored, clean, unknown) |
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101 | 99 | except socket.error, err: |
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102 | 100 | ui.warn(_('could not talk to new inotify ' |
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103 | 101 | 'server: %s\n') % err[-1]) |
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104 | 102 | elif err[0] in (errno.ECONNREFUSED, errno.ENOENT): |
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105 | 103 | # silently ignore normal errors if autostart is False |
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106 | 104 | ui.debug(_('(inotify server not running)\n')) |
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107 | 105 | else: |
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108 | 106 | ui.warn(_('failed to contact inotify server: %s\n') |
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109 | 107 | % err[-1]) |
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110 | 108 | ui.print_exc() |
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111 | 109 | # replace by old status function |
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112 | 110 | self.status = super(inotifydirstate, self).status |
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113 | 111 | |
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114 | 112 | return super(inotifydirstate, self).status( |
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115 | 113 | match, ignored, clean, unknown) |
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116 | 114 | |
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117 | 115 | repo.dirstate.__class__ = inotifydirstate |
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118 | 116 | |
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119 | 117 | cmdtable = { |
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120 | 118 | '^inserve': |
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121 | 119 | (serve, |
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122 | 120 | [('d', 'daemon', None, _('run server in background')), |
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123 | 121 | ('', 'daemon-pipefds', '', _('used internally by daemon mode')), |
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124 | 122 | ('t', 'idle-timeout', '', _('minutes to sit idle before exiting')), |
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125 | 123 | ('', 'pid-file', '', _('name of file to write process ID to'))], |
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126 | 124 | _('hg inserve [OPT]...')), |
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127 | 125 | } |
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