[IMP] kill -SIGQUIT dumps the stack of all threads (forwardport of 2124 chs@openerp.com-20100920165253-esaatbgtvha9jhb9 from 5.0 branch)

bzr revid: chs@openerp.com-20100920165456-vux7ke0nmp8mqvna

bin/openerp-server.py

@@ -164,9 +164,6 @@ if tools.config["stop_after_init"]:
 #----------------------------------------------------------
 
 LST_SIGNALS = ['SIGINT', 'SIGTERM']
-if os.name == 'posix':
-    LST_SIGNALS.extend(['SIGUSR1','SIGQUIT'])
-
 
 SIGNALS = dict(
     [(getattr(signal, sign), sign) for sign in LST_SIGNALS]
@@ -189,6 +186,26 @@ def handler(signum, _):
 for signum in SIGNALS:
     signal.signal(signum, handler)
 
+
+import threading
+import traceback
+def dumpstacks(signum, _):
+    # code from http://stackoverflow.com/questions/132058/getting-stack-trace-from-a-running-python-application#answer-2569696
+
+    id2name = dict([(th.ident, th.name) for th in threading.enumerate()])
+    code = []
+    for threadId, stack in sys._current_frames().items():
+        code.append("\n# Thread: %s(%d)" % (id2name[threadId], 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()))
+
+    logger.notifyChannel("dumpstacks", netsvc.LOG_INFO, "\n".join(code))
+
+if os.name == 'posix':
+    signal.signal(signal.SIGQUIT, dumpstacks)
+
 if tools.config['pidfile']:
     fd = open(tools.config['pidfile'], 'w')
     pidtext = "%d" % (os.getpid())