Mercurial > hg
annotate hgext/inotify/server.py @ 8606:1c5752dabf76
inotify: use a decorator instead of dispatching calls
author | Nicolas Dumazet <nicdumz.commits@gmail.com> |
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date | Fri, 22 May 2009 10:26:56 +0900 |
parents | ed2d9bdbfad2 |
children | e17eba98c789 |
rev | line source |
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6239 | 1 # server.py - inotify status server |
2 # | |
3 # Copyright 2006, 2007, 2008 Bryan O'Sullivan <bos@serpentine.com> | |
4 # Copyright 2007, 2008 Brendan Cully <brendan@kublai.com> | |
5 # | |
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6 # This software may be used and distributed according to the terms of the |
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7 # GNU General Public License version 2, incorporated herein by reference. |
6239 | 8 |
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9 from mercurial.i18n import _ |
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10 from mercurial import osutil, util |
6239 | 11 import common |
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12 import errno, os, select, socket, stat, struct, sys, tempfile, time |
6239 | 13 |
14 try: | |
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15 import linux as inotify |
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16 from linux import watcher |
6239 | 17 except ImportError: |
18 raise | |
19 | |
20 class AlreadyStartedException(Exception): pass | |
21 | |
22 def join(a, b): | |
23 if a: | |
24 if a[-1] == '/': | |
25 return a + b | |
26 return a + '/' + b | |
27 return b | |
28 | |
29 walk_ignored_errors = (errno.ENOENT, errno.ENAMETOOLONG) | |
30 | |
31 def walkrepodirs(repo): | |
32 '''Iterate over all subdirectories of this repo. | |
33 Exclude the .hg directory, any nested repos, and ignored dirs.''' | |
34 rootslash = repo.root + os.sep | |
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35 |
6239 | 36 def walkit(dirname, top): |
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37 fullpath = rootslash + dirname |
6239 | 38 try: |
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39 for name, kind in osutil.listdir(fullpath): |
6239 | 40 if kind == stat.S_IFDIR: |
41 if name == '.hg': | |
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42 if not top: |
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43 return |
6239 | 44 else: |
45 d = join(dirname, name) | |
46 if repo.dirstate._ignore(d): | |
47 continue | |
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48 for subdir in walkit(d, False): |
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49 yield subdir |
6239 | 50 except OSError, err: |
51 if err.errno not in walk_ignored_errors: | |
52 raise | |
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53 yield fullpath |
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54 |
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55 return walkit('', True) |
6239 | 56 |
57 def walk(repo, root): | |
58 '''Like os.walk, but only yields regular files.''' | |
59 | |
60 # This function is critical to performance during startup. | |
61 | |
62 rootslash = repo.root + os.sep | |
63 | |
64 def walkit(root, reporoot): | |
65 files, dirs = [], [] | |
66 | |
67 try: | |
68 fullpath = rootslash + root | |
69 for name, kind in osutil.listdir(fullpath): | |
70 if kind == stat.S_IFDIR: | |
71 if name == '.hg': | |
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72 if not reporoot: |
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73 return |
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74 else: |
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75 dirs.append(name) |
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76 path = join(root, name) |
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77 if repo.dirstate._ignore(path): |
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78 continue |
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79 for result in walkit(path, False): |
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80 yield result |
6239 | 81 elif kind in (stat.S_IFREG, stat.S_IFLNK): |
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82 files.append(name) |
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83 yield fullpath, dirs, files |
6239 | 84 |
85 except OSError, err: | |
86 if err.errno not in walk_ignored_errors: | |
87 raise | |
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88 |
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89 return walkit(root, root == '') |
6239 | 90 |
91 def _explain_watch_limit(ui, repo, count): | |
92 path = '/proc/sys/fs/inotify/max_user_watches' | |
93 try: | |
94 limit = int(file(path).read()) | |
95 except IOError, err: | |
96 if err.errno != errno.ENOENT: | |
97 raise | |
98 raise util.Abort(_('this system does not seem to ' | |
99 'support inotify')) | |
100 ui.warn(_('*** the current per-user limit on the number ' | |
101 'of inotify watches is %s\n') % limit) | |
102 ui.warn(_('*** this limit is too low to watch every ' | |
103 'directory in this repository\n')) | |
104 ui.warn(_('*** counting directories: ')) | |
105 ndirs = len(list(walkrepodirs(repo))) | |
106 ui.warn(_('found %d\n') % ndirs) | |
107 newlimit = min(limit, 1024) | |
108 while newlimit < ((limit + ndirs) * 1.1): | |
109 newlimit *= 2 | |
110 ui.warn(_('*** to raise the limit from %d to %d (run as root):\n') % | |
111 (limit, newlimit)) | |
112 ui.warn(_('*** echo %d > %s\n') % (newlimit, path)) | |
113 raise util.Abort(_('cannot watch %s until inotify watch limit is raised') | |
114 % repo.root) | |
115 | |
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116 class repowatcher(object): |
6239 | 117 poll_events = select.POLLIN |
118 statuskeys = 'almr!?' | |
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119 mask = ( |
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120 inotify.IN_ATTRIB | |
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121 inotify.IN_CREATE | |
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122 inotify.IN_DELETE | |
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123 inotify.IN_DELETE_SELF | |
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124 inotify.IN_MODIFY | |
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125 inotify.IN_MOVED_FROM | |
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126 inotify.IN_MOVED_TO | |
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127 inotify.IN_MOVE_SELF | |
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128 inotify.IN_ONLYDIR | |
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129 inotify.IN_UNMOUNT | |
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130 0) |
6239 | 131 |
132 def __init__(self, ui, repo, master): | |
133 self.ui = ui | |
134 self.repo = repo | |
135 self.wprefix = self.repo.wjoin('') | |
136 self.timeout = None | |
137 self.master = master | |
138 try: | |
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139 self.watcher = watcher.watcher() |
6239 | 140 except OSError, err: |
141 raise util.Abort(_('inotify service not available: %s') % | |
142 err.strerror) | |
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143 self.threshold = watcher.threshold(self.watcher) |
6239 | 144 self.registered = True |
145 self.fileno = self.watcher.fileno | |
146 | |
147 self.tree = {} | |
148 self.statcache = {} | |
149 self.statustrees = dict([(s, {}) for s in self.statuskeys]) | |
150 | |
151 self.watches = 0 | |
152 self.last_event = None | |
153 | |
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154 self.lastevent = {} |
6239 | 155 |
156 self.ds_info = self.dirstate_info() | |
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157 self.handle_timeout() |
6239 | 158 self.scan() |
159 | |
160 def event_time(self): | |
161 last = self.last_event | |
162 now = time.time() | |
163 self.last_event = now | |
164 | |
165 if last is None: | |
166 return 'start' | |
167 delta = now - last | |
168 if delta < 5: | |
169 return '+%.3f' % delta | |
170 if delta < 50: | |
171 return '+%.2f' % delta | |
172 return '+%.1f' % delta | |
173 | |
174 def dirstate_info(self): | |
175 try: | |
176 st = os.lstat(self.repo.join('dirstate')) | |
177 return st.st_mtime, st.st_ino | |
178 except OSError, err: | |
179 if err.errno != errno.ENOENT: | |
180 raise | |
181 return 0, 0 | |
182 | |
183 def add_watch(self, path, mask): | |
184 if not path: | |
185 return | |
186 if self.watcher.path(path) is None: | |
187 if self.ui.debugflag: | |
188 self.ui.note(_('watching %r\n') % path[len(self.wprefix):]) | |
189 try: | |
190 self.watcher.add(path, mask) | |
191 self.watches += 1 | |
192 except OSError, err: | |
193 if err.errno in (errno.ENOENT, errno.ENOTDIR): | |
194 return | |
195 if err.errno != errno.ENOSPC: | |
196 raise | |
197 _explain_watch_limit(self.ui, self.repo, self.watches) | |
198 | |
199 def setup(self): | |
200 self.ui.note(_('watching directories under %r\n') % self.repo.root) | |
201 self.add_watch(self.repo.path, inotify.IN_DELETE) | |
202 self.check_dirstate() | |
203 | |
204 def wpath(self, evt): | |
205 path = evt.fullpath | |
206 if path == self.repo.root: | |
207 return '' | |
208 if path.startswith(self.wprefix): | |
209 return path[len(self.wprefix):] | |
210 raise 'wtf? ' + path | |
211 | |
212 def dir(self, tree, path): | |
213 if path: | |
214 for name in path.split('/'): | |
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215 tree = tree.setdefault(name, {}) |
6239 | 216 return tree |
217 | |
218 def lookup(self, path, tree): | |
219 if path: | |
220 try: | |
221 for name in path.split('/'): | |
222 tree = tree[name] | |
223 except KeyError: | |
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224 return 'x' |
6239 | 225 except TypeError: |
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226 return 'd' |
6239 | 227 return tree |
228 | |
229 def split(self, path): | |
230 c = path.rfind('/') | |
231 if c == -1: | |
232 return '', path | |
233 return path[:c], path[c+1:] | |
234 | |
235 def filestatus(self, fn, st): | |
236 try: | |
237 type_, mode, size, time = self.repo.dirstate._map[fn][:4] | |
238 except KeyError: | |
239 type_ = '?' | |
240 if type_ == 'n': | |
241 st_mode, st_size, st_mtime = st | |
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242 if size == -1: |
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243 return 'l' |
6239 | 244 if size and (size != st_size or (mode ^ st_mode) & 0100): |
245 return 'm' | |
246 if time != int(st_mtime): | |
247 return 'l' | |
248 return 'n' | |
249 if type_ == '?' and self.repo.dirstate._ignore(fn): | |
250 return 'i' | |
251 return type_ | |
252 | |
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253 def updatefile(self, wfn, osstat): |
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254 ''' |
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255 update the file entry of an existing file. |
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256 |
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257 osstat: (mode, size, time) tuple, as returned by os.lstat(wfn) |
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258 ''' |
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259 |
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260 self._updatestatus(wfn, self.filestatus(wfn, osstat)) |
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261 |
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262 def deletefile(self, wfn, oldstatus): |
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263 ''' |
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264 update the entry of a file which has been deleted. |
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265 |
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266 oldstatus: char in statuskeys, status of the file before deletion |
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267 ''' |
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268 if oldstatus == 'r': |
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269 newstatus = 'r' |
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270 elif oldstatus in 'almn': |
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271 newstatus = '!' |
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272 else: |
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273 newstatus = None |
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274 |
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275 self.statcache.pop(wfn, None) |
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276 self._updatestatus(wfn, newstatus) |
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277 |
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278 def _updatestatus(self, wfn, newstatus): |
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279 ''' |
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280 Update the stored status of a file or directory. |
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281 |
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282 newstatus: - char in (statuskeys + 'ni'), new status to apply. |
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283 - or None, to stop tracking wfn |
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284 ''' |
6239 | 285 root, fn = self.split(wfn) |
286 d = self.dir(self.tree, root) | |
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287 |
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288 oldstatus = d.get(fn) |
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289 # oldstatus can be either: |
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290 # - None : fn is new |
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291 # - a char in statuskeys: fn is a (tracked) file |
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292 # - a dict: fn is a directory |
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293 isdir = isinstance(oldstatus, dict) |
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294 |
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295 if self.ui.debugflag and oldstatus != newstatus: |
6239 | 296 if isdir: |
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297 self.ui.note(_('status: %r dir(%d) -> %s\n') % |
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298 (wfn, len(oldstatus), newstatus)) |
6239 | 299 else: |
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300 self.ui.note(_('status: %r %s -> %s\n') % |
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301 (wfn, oldstatus, newstatus)) |
6239 | 302 if not isdir: |
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303 if oldstatus and oldstatus in self.statuskeys \ |
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304 and oldstatus != newstatus: |
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305 del self.dir(self.statustrees[oldstatus], root)[fn] |
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306 if newstatus and newstatus != 'i': |
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307 d[fn] = newstatus |
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308 if newstatus in self.statuskeys: |
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309 dd = self.dir(self.statustrees[newstatus], root) |
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310 if oldstatus != newstatus or fn not in dd: |
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311 dd[fn] = newstatus |
6239 | 312 else: |
313 d.pop(fn, None) | |
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314 |
6239 | 315 |
316 def check_deleted(self, key): | |
317 # Files that had been deleted but were present in the dirstate | |
318 # may have vanished from the dirstate; we must clean them up. | |
319 nuke = [] | |
320 for wfn, ignore in self.walk(key, self.statustrees[key]): | |
321 if wfn not in self.repo.dirstate: | |
322 nuke.append(wfn) | |
323 for wfn in nuke: | |
324 root, fn = self.split(wfn) | |
325 del self.dir(self.statustrees[key], root)[fn] | |
326 del self.dir(self.tree, root)[fn] | |
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327 |
6239 | 328 def scan(self, topdir=''): |
329 ds = self.repo.dirstate._map.copy() | |
330 self.add_watch(join(self.repo.root, topdir), self.mask) | |
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331 for root, dirs, files in walk(self.repo, topdir): |
6239 | 332 for d in dirs: |
333 self.add_watch(join(root, d), self.mask) | |
334 wroot = root[len(self.wprefix):] | |
335 d = self.dir(self.tree, wroot) | |
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336 for fn in files: |
6239 | 337 wfn = join(wroot, fn) |
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338 self.updatefile(wfn, self.getstat(wfn)) |
6239 | 339 ds.pop(wfn, None) |
340 wtopdir = topdir | |
341 if wtopdir and wtopdir[-1] != '/': | |
342 wtopdir += '/' | |
343 for wfn, state in ds.iteritems(): | |
344 if not wfn.startswith(wtopdir): | |
345 continue | |
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346 try: |
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347 st = self.stat(wfn) |
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348 except OSError: |
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349 status = state[0] |
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350 self.deletefile(wfn, status) |
6239 | 351 else: |
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352 self.updatefile(wfn, st) |
6239 | 353 self.check_deleted('!') |
354 self.check_deleted('r') | |
355 | |
356 def check_dirstate(self): | |
357 ds_info = self.dirstate_info() | |
358 if ds_info == self.ds_info: | |
359 return | |
360 self.ds_info = ds_info | |
361 if not self.ui.debugflag: | |
362 self.last_event = None | |
363 self.ui.note(_('%s dirstate reload\n') % self.event_time()) | |
364 self.repo.dirstate.invalidate() | |
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365 self.handle_timeout() |
6239 | 366 self.scan() |
367 self.ui.note(_('%s end dirstate reload\n') % self.event_time()) | |
368 | |
369 def walk(self, states, tree, prefix=''): | |
370 # This is the "inner loop" when talking to the client. | |
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371 |
6239 | 372 for name, val in tree.iteritems(): |
373 path = join(prefix, name) | |
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374 try: |
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375 if val in states: |
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376 yield path, val |
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377 except TypeError: |
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378 for p in self.walk(states, val, path): |
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379 yield p |
6239 | 380 |
381 def update_hgignore(self): | |
382 # An update of the ignore file can potentially change the | |
383 # states of all unknown and ignored files. | |
384 | |
385 # XXX If the user has other ignore files outside the repo, or | |
386 # changes their list of ignore files at run time, we'll | |
387 # potentially never see changes to them. We could get the | |
388 # client to report to us what ignore data they're using. | |
389 # But it's easier to do nothing than to open that can of | |
390 # worms. | |
391 | |
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392 if '_ignore' in self.repo.dirstate.__dict__: |
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393 delattr(self.repo.dirstate, '_ignore') |
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394 self.ui.note(_('rescanning due to .hgignore change\n')) |
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395 self.handle_timeout() |
6239 | 396 self.scan() |
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397 |
6239 | 398 def getstat(self, wpath): |
399 try: | |
400 return self.statcache[wpath] | |
401 except KeyError: | |
402 try: | |
403 return self.stat(wpath) | |
404 except OSError, err: | |
405 if err.errno != errno.ENOENT: | |
406 raise | |
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407 |
6239 | 408 def stat(self, wpath): |
409 try: | |
410 st = os.lstat(join(self.wprefix, wpath)) | |
411 ret = st.st_mode, st.st_size, st.st_mtime | |
412 self.statcache[wpath] = ret | |
413 return ret | |
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414 except OSError: |
6239 | 415 self.statcache.pop(wpath, None) |
416 raise | |
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417 |
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418 def eventaction(code): |
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419 def decorator(f): |
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420 def wrapper(self, wpath): |
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421 if code == 'm' and wpath in self.lastevent and \ |
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422 self.lastevent[wpath] in 'cm': |
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423 return |
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424 self.lastevent[wpath] = code |
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425 self.timeout = 250 |
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426 |
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427 f(self, wpath) |
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428 |
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429 wrapper.func_name = f.func_name |
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430 return wrapper |
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431 return decorator |
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432 |
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433 @eventaction('c') |
6239 | 434 def created(self, wpath): |
435 if wpath == '.hgignore': | |
436 self.update_hgignore() | |
437 try: | |
438 st = self.stat(wpath) | |
439 if stat.S_ISREG(st[0]): | |
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440 self.updatefile(wpath, st) |
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441 except OSError: |
6239 | 442 pass |
443 | |
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444 @eventaction('m') |
6239 | 445 def modified(self, wpath): |
446 if wpath == '.hgignore': | |
447 self.update_hgignore() | |
448 try: | |
449 st = self.stat(wpath) | |
450 if stat.S_ISREG(st[0]): | |
451 if self.repo.dirstate[wpath] in 'lmn': | |
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452 self.updatefile(wpath, st) |
6239 | 453 except OSError: |
454 pass | |
455 | |
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456 @eventaction('d') |
6239 | 457 def deleted(self, wpath): |
458 if wpath == '.hgignore': | |
459 self.update_hgignore() | |
460 elif wpath.startswith('.hg/'): | |
461 if wpath == '.hg/wlock': | |
462 self.check_dirstate() | |
463 return | |
464 | |
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465 self.deletefile(wpath, self.repo.dirstate[wpath]) |
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466 |
6239 | 467 def process_create(self, wpath, evt): |
468 if self.ui.debugflag: | |
469 self.ui.note(_('%s event: created %s\n') % | |
470 (self.event_time(), wpath)) | |
471 | |
472 if evt.mask & inotify.IN_ISDIR: | |
473 self.scan(wpath) | |
474 else: | |
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475 self.created(wpath) |
6239 | 476 |
477 def process_delete(self, wpath, evt): | |
478 if self.ui.debugflag: | |
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479 self.ui.note(_('%s event: deleted %s\n') % |
6239 | 480 (self.event_time(), wpath)) |
481 | |
482 if evt.mask & inotify.IN_ISDIR: | |
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|
483 tree = self.dir(self.tree, wpath).copy() |
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484 for wfn, ignore in self.walk('?', tree): |
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485 self.deletefile(join(wpath, wfn), '?') |
6239 | 486 self.scan(wpath) |
8600
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487 else: |
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488 self.deleted(wpath) |
6239 | 489 |
490 def process_modify(self, wpath, evt): | |
491 if self.ui.debugflag: | |
492 self.ui.note(_('%s event: modified %s\n') % | |
493 (self.event_time(), wpath)) | |
494 | |
495 if not (evt.mask & inotify.IN_ISDIR): | |
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496 self.modified(wpath) |
6239 | 497 |
498 def process_unmount(self, evt): | |
499 self.ui.warn(_('filesystem containing %s was unmounted\n') % | |
500 evt.fullpath) | |
501 sys.exit(0) | |
502 | |
503 def handle_event(self, fd, event): | |
504 if self.ui.debugflag: | |
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505 self.ui.note(_('%s readable: %d bytes\n') % |
6239 | 506 (self.event_time(), self.threshold.readable())) |
507 if not self.threshold(): | |
508 if self.registered: | |
509 if self.ui.debugflag: | |
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510 self.ui.note(_('%s below threshold - unhooking\n') % |
6239 | 511 (self.event_time())) |
512 self.master.poll.unregister(fd) | |
513 self.registered = False | |
514 self.timeout = 250 | |
515 else: | |
516 self.read_events() | |
517 | |
518 def read_events(self, bufsize=None): | |
519 events = self.watcher.read(bufsize) | |
520 if self.ui.debugflag: | |
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521 self.ui.note(_('%s reading %d events\n') % |
6239 | 522 (self.event_time(), len(events))) |
523 for evt in events: | |
524 wpath = self.wpath(evt) | |
525 if evt.mask & inotify.IN_UNMOUNT: | |
526 self.process_unmount(wpath, evt) | |
527 elif evt.mask & (inotify.IN_MODIFY | inotify.IN_ATTRIB): | |
528 self.process_modify(wpath, evt) | |
529 elif evt.mask & (inotify.IN_DELETE | inotify.IN_DELETE_SELF | | |
530 inotify.IN_MOVED_FROM): | |
531 self.process_delete(wpath, evt) | |
532 elif evt.mask & (inotify.IN_CREATE | inotify.IN_MOVED_TO): | |
533 self.process_create(wpath, evt) | |
534 | |
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535 self.lastevent.clear() |
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536 |
6239 | 537 def handle_timeout(self): |
538 if not self.registered: | |
539 if self.ui.debugflag: | |
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540 self.ui.note(_('%s hooking back up with %d bytes readable\n') % |
6239 | 541 (self.event_time(), self.threshold.readable())) |
542 self.read_events(0) | |
543 self.master.poll.register(self, select.POLLIN) | |
544 self.registered = True | |
545 | |
546 self.timeout = None | |
547 | |
548 def shutdown(self): | |
549 self.watcher.close() | |
550 | |
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551 def debug(self): |
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552 """ |
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553 Returns a sorted list of relatives paths currently watched, |
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554 for debugging purposes. |
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555 """ |
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556 return sorted(tuple[0][len(self.wprefix):] for tuple in self.watcher) |
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|
557 |
8385
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|
558 class server(object): |
6239 | 559 poll_events = select.POLLIN |
560 | |
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561 def __init__(self, ui, repo, repowatcher, timeout): |
6239 | 562 self.ui = ui |
563 self.repo = repo | |
8335
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564 self.repowatcher = repowatcher |
6239 | 565 self.timeout = timeout |
566 self.sock = socket.socket(socket.AF_UNIX) | |
567 self.sockpath = self.repo.join('inotify.sock') | |
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568 self.realsockpath = None |
6239 | 569 try: |
570 self.sock.bind(self.sockpath) | |
571 except socket.error, err: | |
572 if err[0] == errno.EADDRINUSE: | |
6997
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573 raise AlreadyStartedException(_('could not start server: %s') |
6239 | 574 % err[1]) |
6997
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575 if err[0] == "AF_UNIX path too long": |
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576 tempdir = tempfile.mkdtemp(prefix="hg-inotify-") |
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577 self.realsockpath = os.path.join(tempdir, "inotify.sock") |
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578 try: |
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|
579 self.sock.bind(self.realsockpath) |
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580 os.symlink(self.realsockpath, self.sockpath) |
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|
581 except (OSError, socket.error), inst: |
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|
582 try: |
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|
583 os.unlink(self.realsockpath) |
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|
584 except: |
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|
585 pass |
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|
586 os.rmdir(tempdir) |
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|
587 if inst.errno == errno.EEXIST: |
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588 raise AlreadyStartedException(_('could not start server: %s') |
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|
589 % inst.strerror) |
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|
590 raise |
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|
591 else: |
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|
592 raise |
6239 | 593 self.sock.listen(5) |
594 self.fileno = self.sock.fileno | |
595 | |
596 def handle_timeout(self): | |
597 pass | |
598 | |
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changeset
|
599 def answer_stat_query(self, cs): |
6239 | 600 names = cs.read().split('\0') |
6287
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diff
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|
601 |
6239 | 602 states = names.pop() |
603 | |
604 self.ui.note(_('answering query for %r\n') % states) | |
605 | |
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|
606 if self.repowatcher.timeout: |
6239 | 607 # We got a query while a rescan is pending. Make sure we |
608 # rescan before responding, or we could give back a wrong | |
609 # answer. | |
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|
610 self.repowatcher.handle_timeout() |
6239 | 611 |
612 if not names: | |
613 def genresult(states, tree): | |
8335
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614 for fn, state in self.repowatcher.walk(states, tree): |
6239 | 615 yield fn |
616 else: | |
617 def genresult(states, tree): | |
618 for fn in names: | |
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|
619 l = self.repowatcher.lookup(fn, tree) |
7351
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Backed out changeset c5dbe86b0fee (issue1375)
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changeset
|
620 try: |
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Backed out changeset c5dbe86b0fee (issue1375)
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changeset
|
621 if l in states: |
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Backed out changeset c5dbe86b0fee (issue1375)
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|
622 yield fn |
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Backed out changeset c5dbe86b0fee (issue1375)
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changeset
|
623 except TypeError: |
8335
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624 for f, s in self.repowatcher.walk(states, l, fn): |
7351
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|
625 yield f |
6239 | 626 |
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|
627 return ['\0'.join(r) for r in [ |
8335
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|
628 genresult('l', self.repowatcher.statustrees['l']), |
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changeset
|
629 genresult('m', self.repowatcher.statustrees['m']), |
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630 genresult('a', self.repowatcher.statustrees['a']), |
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631 genresult('r', self.repowatcher.statustrees['r']), |
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632 genresult('!', self.repowatcher.statustrees['!']), |
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|
633 '?' in states |
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634 and genresult('?', self.repowatcher.statustrees['?']) |
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|
635 or [], |
6239 | 636 [], |
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|
637 'c' in states and genresult('n', self.repowatcher.tree) or [], |
6239 | 638 ]] |
639 | |
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640 def answer_dbug_query(self): |
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641 return ['\0'.join(self.repowatcher.debug())] |
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642 |
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643 def handle_event(self, fd, event): |
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644 sock, addr = self.sock.accept() |
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645 |
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646 cs = common.recvcs(sock) |
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647 version = ord(cs.read(1)) |
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648 |
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649 if version != common.version: |
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650 self.ui.warn(_('received query from incompatible client ' |
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|
651 'version %d\n') % version) |
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652 return |
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653 |
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654 type = cs.read(4) |
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655 |
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656 if type == 'STAT': |
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changeset
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657 results = self.answer_stat_query(cs) |
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658 elif type == 'DBUG': |
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659 results = self.answer_dbug_query() |
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660 else: |
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661 self.ui.warn(_('unrecognized query type: %s\n') % type) |
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662 return |
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663 |
6239 | 664 try: |
665 try: | |
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666 v = chr(common.version) |
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667 |
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668 sock.sendall(v + type + struct.pack(common.resphdrfmts[type], |
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669 *map(len, results))) |
6239 | 670 sock.sendall(''.join(results)) |
671 finally: | |
672 sock.shutdown(socket.SHUT_WR) | |
673 except socket.error, err: | |
674 if err[0] != errno.EPIPE: | |
675 raise | |
676 | |
677 def shutdown(self): | |
678 self.sock.close() | |
679 try: | |
680 os.unlink(self.sockpath) | |
6997
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681 if self.realsockpath: |
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682 os.unlink(self.realsockpath) |
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683 os.rmdir(os.path.dirname(self.realsockpath)) |
6239 | 684 except OSError, err: |
685 if err.errno != errno.ENOENT: | |
686 raise | |
687 | |
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688 class master(object): |
6239 | 689 def __init__(self, ui, repo, timeout=None): |
690 self.ui = ui | |
691 self.repo = repo | |
692 self.poll = select.poll() | |
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693 self.repowatcher = repowatcher(ui, repo, self) |
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694 self.server = server(ui, repo, self.repowatcher, timeout) |
6239 | 695 self.table = {} |
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696 for obj in (self.repowatcher, self.server): |
6239 | 697 fd = obj.fileno() |
698 self.table[fd] = obj | |
699 self.poll.register(fd, obj.poll_events) | |
700 | |
701 def register(self, fd, mask): | |
702 self.poll.register(fd, mask) | |
703 | |
704 def shutdown(self): | |
705 for obj in self.table.itervalues(): | |
706 obj.shutdown() | |
707 | |
708 def run(self): | |
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709 self.repowatcher.setup() |
6239 | 710 self.ui.note(_('finished setup\n')) |
711 if os.getenv('TIME_STARTUP'): | |
712 sys.exit(0) | |
713 while True: | |
714 timeout = None | |
715 timeobj = None | |
716 for obj in self.table.itervalues(): | |
717 if obj.timeout is not None and (timeout is None or obj.timeout < timeout): | |
718 timeout, timeobj = obj.timeout, obj | |
719 try: | |
720 if self.ui.debugflag: | |
721 if timeout is None: | |
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722 self.ui.note(_('polling: no timeout\n')) |
6239 | 723 else: |
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724 self.ui.note(_('polling: %sms timeout\n') % timeout) |
6239 | 725 events = self.poll.poll(timeout) |
726 except select.error, err: | |
727 if err[0] == errno.EINTR: | |
728 continue | |
729 raise | |
730 if events: | |
731 for fd, event in events: | |
732 self.table[fd].handle_event(fd, event) | |
733 elif timeobj: | |
734 timeobj.handle_timeout() | |
735 | |
736 def start(ui, repo): | |
7451
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737 def closefds(ignore): |
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738 # (from python bug #1177468) |
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739 # close all inherited file descriptors |
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740 # Python 2.4.1 and later use /dev/urandom to seed the random module's RNG |
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741 # a file descriptor is kept internally as os._urandomfd (created on demand |
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742 # the first time os.urandom() is called), and should not be closed |
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743 try: |
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744 os.urandom(4) |
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745 urandom_fd = getattr(os, '_urandomfd', None) |
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746 except AttributeError: |
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747 urandom_fd = None |
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748 ignore.append(urandom_fd) |
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749 for fd in range(3, 256): |
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750 if fd in ignore: |
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751 continue |
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752 try: |
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753 os.close(fd) |
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754 except OSError: |
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755 pass |
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756 |
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757 m = master(ui, repo) |
6239 | 758 sys.stdout.flush() |
759 sys.stderr.flush() | |
760 | |
761 pid = os.fork() | |
762 if pid: | |
763 return pid | |
764 | |
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765 closefds([m.server.fileno(), m.repowatcher.fileno()]) |
6239 | 766 os.setsid() |
767 | |
768 fd = os.open('/dev/null', os.O_RDONLY) | |
769 os.dup2(fd, 0) | |
770 if fd > 0: | |
771 os.close(fd) | |
772 | |
773 fd = os.open(ui.config('inotify', 'log', '/dev/null'), | |
774 os.O_RDWR | os.O_CREAT | os.O_TRUNC) | |
775 os.dup2(fd, 1) | |
776 os.dup2(fd, 2) | |
777 if fd > 2: | |
778 os.close(fd) | |
779 | |
780 try: | |
781 m.run() | |
782 finally: | |
783 m.shutdown() | |
784 os._exit(0) |