1 files changed, 45 insertions, 0 deletions
diff --git a/python/qpid/debug.py b/python/qpid/debug.py
new file mode 100644
index 0000000000..357340747f
--- /dev/null
+++ b/python/qpid/debug.py
@@ -0,0 +1,45 @@
+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()
+