author | Sverre Rabbelier <srabbelier@gmail.com> |
Sat, 28 Feb 2009 12:10:19 +0000 | |
changeset 1554 | 163c879d1ffe |
parent 323 | ff1a9aa48cfd |
permissions | -rw-r--r-- |
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03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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import os |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
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import sys |
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Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
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|
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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if os.name == 'posix': |
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Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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def become_daemon(our_home_dir='.', out_log='/dev/null', |
ff1a9aa48cfd
Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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err_log='/dev/null', umask=022): |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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"Robustly turn into a UNIX daemon, running in our_home_dir." |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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# First fork |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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try: |
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Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
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if os.fork() > 0: |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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sys.exit(0) # kill off parent |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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except OSError, e: |
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Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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sys.stderr.write("fork #1 failed: (%d) %s\n" % (e.errno, e.strerror)) |
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Todd Larsen <tlarsen@google.com>
parents:
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sys.exit(1) |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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os.setsid() |
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parents:
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os.chdir(our_home_dir) |
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Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
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os.umask(umask) |
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Todd Larsen <tlarsen@google.com>
parents:
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|
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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# Second fork |
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try: |
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Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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if os.fork() > 0: |
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Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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os._exit(0) |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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except OSError, e: |
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Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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sys.stderr.write("fork #2 failed: (%d) %s\n" % (e.errno, e.strerror)) |
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Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
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os._exit(1) |
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parents:
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|
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Todd Larsen <tlarsen@google.com>
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si = open('/dev/null', 'r') |
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parents:
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so = open(out_log, 'a+', 0) |
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Major reorganization of the soc svn repo, to merge into a single App Engine
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parents:
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se = open(err_log, 'a+', 0) |
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Todd Larsen <tlarsen@google.com>
parents:
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os.dup2(si.fileno(), sys.stdin.fileno()) |
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Todd Larsen <tlarsen@google.com>
parents:
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os.dup2(so.fileno(), sys.stdout.fileno()) |
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Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
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os.dup2(se.fileno(), sys.stderr.fileno()) |
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Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
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# Set custom file descriptors so that they get proper buffering. |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
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sys.stdout, sys.stderr = so, se |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
35 |
else: |
323
ff1a9aa48cfd
Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
54
diff
changeset
|
36 |
def become_daemon(our_home_dir='.', out_log=None, err_log=None, umask=022): |
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Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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""" |
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Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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If we're not running under a POSIX system, just simulate the daemon |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
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mode by doing redirections and directory changing. |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
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""" |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
41 |
os.chdir(our_home_dir) |
323
ff1a9aa48cfd
Load ../vendor/django into trunk/app/django.
Pawel Solyga <Pawel.Solyga@gmail.com>
parents:
54
diff
changeset
|
42 |
os.umask(umask) |
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03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
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sys.stdin.close() |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
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sys.stdout.close() |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
45 |
sys.stderr.close() |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
46 |
if err_log: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
47 |
sys.stderr = open(err_log, 'a', 0) |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
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else: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
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|
49 |
sys.stderr = NullDevice() |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
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if out_log: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
changeset
|
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sys.stdout = open(out_log, 'a', 0) |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
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else: |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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sys.stdout = NullDevice() |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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|
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
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class NullDevice: |
03e267d67478
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"A writeable object that writes to nowhere -- like /dev/null." |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
diff
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def write(self, s): |
03e267d67478
Major reorganization of the soc svn repo, to merge into a single App Engine
Todd Larsen <tlarsen@google.com>
parents:
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pass |