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import traceback, time, sys
from threading import RLock
def stackdump(*args):
print args
code = []
for threadId, stack in sys._current_frames().items():
code.append("\n# ThreadID: %s" % threadId)
for filename, lineno, name, line in traceback.extract_stack(stack):
code.append('File: "%s", line %d, in %s' % (filename, lineno, name))
if line:
code.append(" %s" % (line.strip()))
print "\n".join(code)
import signal
signal.signal(signal.SIGQUIT, stackdump)
#out = open("/tmp/stacks.txt", "write")
class LoudLock:
def __init__(self):
self.lock = RLock()
def acquire(self, blocking=1):
import threading
while not self.lock.acquire(blocking=0):
time.sleep(1)
print >> out, "TRYING"
# print self.lock._RLock__owner, threading._active
# stackdump()
traceback.print_stack(None, None, out)
print >> out, "TRYING"
print >> out, "ACQUIRED"
traceback.print_stack(None, None, out)
print >> out, "ACQUIRED"
return True
def _is_owned(self):
return self.lock._is_owned()
def release(self):
self.lock.release()
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