src/cm/utils/thread.py
author Simon Descarpentries <sid@sopinspace.com>
Fri, 20 Sep 2013 16:28:40 +0200
changeset 536 0c625ce49a81
parent 0 40c8f766c9b8
permissions -rw-r--r--
- updating jQuery (1.3.2 -> 1.10.2), jQuery UI, jQuery modules - [text_view_frame.html] Add some JS driven CSS tricks for iPad - [text_view_frame.html] move throbber's hiding-call in nested text_view_comments iframe onload signal (so it works with jQuery 1.10.2 and the hiding timing is good) - [text_view_frame.html][base.html] factorize req_yui.html et req_jquery.html - [main_tabs][text_tabs][f_client-min.js] rewrite jQuery UI Tabs API calls select in active - [base.css] CSS fix grey frame appearence for all tabs - hg remove bgiframe -> not loaded in templates anymore - hg remove header_custom.html -> the file has been empty since 4 years - hg remove controls.html -> the file has been empty since 4 years

def synchronized(lock):
    """ Synchronization decorator. """
    
    def wrap(f):
        def newFunction(*args, **kw):
            lock.acquire()
            try:
                return f(*args, **kw)
            finally:
                lock.release()
        return newFunction
    return wrap

import sys, os

def daemonize(stdin='/dev/null', stdout='/dev/null', stderr='/dev/null'):

    # Perform first fork.
    try:
        pid = os.fork()
        if pid > 0:
            sys.exit(0) # Exit first parent.
    except OSError, e:
        sys.stderr.write("fork #1 failed: (%d) %s\n" % (e.errno, e.strerror))
        sys.exit(1)

    # Decouple from parent environment.
    os.chdir("/")
    os.umask(0)
    os.setsid()

    # Perform second fork.
    try:
        pid = os.fork()
        if pid > 0:
            sys.exit(0) # Exit second parent.
    except OSError, e:
        sys.stderr.write("fork #2 failed: (%d) %s\n" % (e.errno, e.strerror))
        sys.exit(1)

    # The process is now daemonized, redirect standard file descriptors.
    for f in sys.stdout, sys.stderr: f.flush()
    si = file(stdin, 'r')
    so = file(stdout, 'a+')
    se = file(stderr, 'a+', 0)
    os.dup2(si.fileno(), sys.stdin.fileno())
    os.dup2(so.fileno(), sys.stdout.fileno())
    os.dup2(se.fileno(), sys.stderr.fileno())