21
19
raise Exception("%s [%d]" % (e.strerror, e.errno))
23
if (pid == 0): # The first child.
21
if pid == 0: # The first child.
27
pid = os.fork() # Fork a second child.
25
pid = os.fork() # Fork a second child.
29
27
raise Exception, "%s [%d]" % (e.strerror, e.errno)
31
if (pid == 0): # The second child.
29
if pid == 0: # The second child.
35
os._exit(0) # Exit parent (the first child) of the second child.
32
os._exit(0) # Exit parent (the first child) of the second child.
37
os._exit(0) # Exit parent of the first child.
39
#import resource # Resource usage information.
40
#maxfd = resource.getrlimit(resource.RLIMIT_NOFILE)[1]
41
#if (maxfd == resource.RLIM_INFINITY):
44
# Iterate through and close all file descriptors.
45
#for fd in range(3, maxfd):
48
# except OSError: # ERROR, fd wasn't open to begin with (ignored)
51
# This call to open is guaranteed to return the lowest file descriptor,
52
# which will be 0 (stdin), since it was closed above.
53
#os.open(REDIRECT_TO, os.O_RDWR) # standard input (0)
55
# Duplicate standard input to standard output and standard error.
56
#os.dup2(0, 1) # standard output (1)
57
#os.dup2(0, 2) # standard error (2)
34
os._exit(0) # Exit parent of the first child.
36
import resource # Resource usage information.
37
maxfd = resource.getrlimit(resource.RLIMIT_NOFILE)[1]
38
if (maxfd == resource.RLIM_INFINITY):
41
fd = os.open(REDIRECT_TO, os.O_RDONLY)
43
fd = os.open(REDIRECT_TO, os.O_WRONLY)
47
# Iterate through and close all other file descriptors.
48
for fd in range(3, maxfd):
51
except OSError: # ERROR, fd wasn't open to begin with (ignored)
59
54
f = open(pidfile, 'w')
60
55
f.write('%d\n' % (os.getpid(),))
61
56
f.write('%s\n' % (home,))
60
def is_running(pidfile):
62
f = open(pidfile, 'r')
65
pid = int(f.readline())