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@@ -0,0 +1,102 @@
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+"""Stack tracer for multi-threaded applications.
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+
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+
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+Usage:
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+
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+import stacktracer
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+stacktracer.trace_start("trace.html",interval=5,auto=True) # Set auto flag to always update file!
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+....
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+stacktracer.stop_trace()
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+"""
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+
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+
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+
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+import sys
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+import traceback
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+from pygments import highlight
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+from pygments.lexers import PythonLexer
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+from pygments.formatters import HtmlFormatter
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+
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+ # Taken from http://bzimmer.ziclix.com/2008/12/17/python-thread-dumps/
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+
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+def stacktraces():
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+ code = []
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+ for threadId, stack in sys._current_frames().items():
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+ code.append("\n# ThreadID: %s" % threadId)
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+ for filename, lineno, name, line in traceback.extract_stack(stack):
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+ code.append('File: "%s", line %d, in %s' % (filename, lineno, name))
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+ if line:
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+ code.append(" %s" % (line.strip()))
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+
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+ return highlight("\n".join(code), PythonLexer(), HtmlFormatter(
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+ full=False,
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+ # style="native",
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+ noclasses=True,
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+ ))
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+
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+
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+# This part was made by nagylzs
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+import os
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+import time
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+import threading
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+
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+class TraceDumper(threading.Thread):
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+ """Dump stack traces into a given file periodically."""
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+ def __init__(self,fpath,interval,auto):
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+ """
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+ @param fpath: File path to output HTML (stack trace file)
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+ @param auto: Set flag (True) to update trace continuously.
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+ Clear flag (False) to update only if file not exists.
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+ (Then delete the file to force update.)
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+ @param interval: In seconds: how often to update the trace file.
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+ """
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+ assert(interval>0.1)
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+ self.auto = auto
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+ self.interval = interval
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+ self.fpath = os.path.abspath(fpath)
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+ self.stop_requested = threading.Event()
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+ threading.Thread.__init__(self)
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+
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+ def run(self):
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+ while not self.stop_requested.isSet():
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+ time.sleep(self.interval)
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+ if self.auto or not os.path.isfile(self.fpath):
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+ self.stacktraces()
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+
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+ def stop(self):
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+ self.stop_requested.set()
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+ self.join()
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+ try:
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+ if os.path.isfile(self.fpath):
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+ os.unlink(self.fpath)
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+ except:
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+ pass
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+
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+ def stacktraces(self):
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+ fout = open(self.fpath,"wb+")
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+ try:
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+ fout.write(stacktraces())
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+ finally:
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+ fout.close()
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+
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+
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+_tracer = None
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+def trace_start(fpath,interval=5,auto=True):
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+ """Start tracing into the given file."""
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+ global _tracer
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+ if _tracer is None:
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+ _tracer = TraceDumper(fpath,interval,auto)
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+ _tracer.setDaemon(True)
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+ _tracer.start()
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+ else:
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+ return
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+ #raise Exception("Already tracing to %s"%_tracer.fpath)
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+
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+def trace_stop():
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+ """Stop tracing."""
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+ global _tracer
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+ if _tracer is None:
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+ raise Exception("Not tracing, cannot stop.")
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+ else:
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+ _tracer.stop()
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+ _tracer = None
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