Mercurial > hg
view mercurial/hgweb/__init__.py @ 35460:8652ab4046e4
osutil: add a function to unblock signals
Signals could be blocked by something like:
#include <unistd.h>
#include <signal.h>
int main(int argc, char * const argv[]) {
sigset_t set;
sigfillset(&set);
sigprocmask(SIG_BLOCK, &set, NULL);
execv("/bin/hg", argv);
return 0;
}
One of the problems is if SIGCHLD is blocked, chgserver would not reap
zombie workers since it depends on SIGCHLD handler entirely.
While it's the parent process to blame but it seems a good idea to just
unblock the signal from hg. FWIW git does that for SIGPIPE already [1].
Unfortunately Python 2 does not reset or provide APIs to change signal
masks. Therefore let's add one in osutil. Note: Python 3.3 introduced
`signal.pthread_sigmask` which solves the problem.
`sigprocmask` is part of POSIX [2] so there is no feature testing in
`setup.py`.
[1]: https://github.com/git/git/commit/7559a1be8a0afb10df41d25e4cf4c5285a5faef1
[2]: http://pubs.opengroup.org/onlinepubs/7908799/xsh/sigprocmask.html
Differential Revision: https://phab.mercurial-scm.org/D1736
author | Jun Wu <quark@fb.com> |
---|---|
date | Wed, 20 Dec 2017 02:13:35 -0800 |
parents | c51380879054 |
children | a8a902d7176e |
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# hgweb/__init__.py - web interface to a mercurial repository # # Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net> # Copyright 2005 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import import os from ..i18n import _ from .. import ( error, pycompat, util, ) from . import ( hgweb_mod, hgwebdir_mod, server, ) def hgweb(config, name=None, baseui=None): '''create an hgweb wsgi object config can be one of: - repo object (single repo view) - path to repo (single repo view) - path to config file (multi-repo view) - dict of virtual:real pairs (multi-repo view) - list of virtual:real tuples (multi-repo view) ''' if ((isinstance(config, str) and not os.path.isdir(config)) or isinstance(config, dict) or isinstance(config, list)): # create a multi-dir interface return hgwebdir_mod.hgwebdir(config, baseui=baseui) return hgweb_mod.hgweb(config, name=name, baseui=baseui) def hgwebdir(config, baseui=None): return hgwebdir_mod.hgwebdir(config, baseui=baseui) class httpservice(object): def __init__(self, ui, app, opts): self.ui = ui self.app = app self.opts = opts def init(self): util.setsignalhandler() self.httpd = server.create_server(self.ui, self.app) if self.opts['port'] and not self.ui.verbose: return if self.httpd.prefix: prefix = self.httpd.prefix.strip('/') + '/' else: prefix = '' port = r':%d' % self.httpd.port if port == r':80': port = r'' bindaddr = self.httpd.addr if bindaddr == r'0.0.0.0': bindaddr = r'*' elif r':' in bindaddr: # IPv6 bindaddr = r'[%s]' % bindaddr fqaddr = self.httpd.fqaddr if r':' in fqaddr: fqaddr = r'[%s]' % fqaddr if self.opts['port']: write = self.ui.status else: write = self.ui.write write(_('listening at http://%s%s/%s (bound to %s:%d)\n') % (pycompat.sysbytes(fqaddr), pycompat.sysbytes(port), prefix, pycompat.sysbytes(bindaddr), self.httpd.port)) self.ui.flush() # avoid buffering of status message def run(self): self.httpd.serve_forever() def createapp(baseui, repo, webconf): if webconf: return hgwebdir_mod.hgwebdir(webconf, baseui=baseui) else: if not repo: raise error.RepoError(_("there is no Mercurial repository" " here (.hg not found)")) return hgweb_mod.hgweb(repo, baseui=baseui)