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https://github.com/facebook/sapling.git
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82715fd2ea
Reviewed By: quark-zju Differential Revision: D19608323 fbshipit-source-id: dd186ef16d6422a56af41fcaa850d9838ae9a240
88 lines
2.4 KiB
Python
88 lines
2.4 KiB
Python
# Copyright (c) Facebook, Inc. and its affiliates.
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2.
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"""sigtrace - dump stack and memory traces on signal
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By default, SIGUSR1 will make hg dump stacks of all threads and SIGUSR2 will
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dump memory traces. All traces are dumped to /tmp by default.
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Config::
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[sigtrace]
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signal = USR1
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memsignal = USR2
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pathformat = /tmp/trace-%(pid)s-%(time)s.log
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mempathformat = /tmp/memtrace-%(pid)s-%(time)s.log
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"""
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import os
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import signal
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import sys
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import time
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import traceback
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from edenscm.mercurial import pycompat, registrar, util
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pathformat = "/tmp/trace-%(pid)s-%(time)s.log"
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mempathformat = "/tmp/memtrace-%(pid)s-%(time)s.log"
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configtable = {}
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configitem = registrar.configitem(configtable)
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configitem("sigtrace", "pathformat", default=pathformat)
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configitem("sigtrace", "signal", default="USR1")
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configitem("sigtrace", "mempathformat", default=mempathformat)
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configitem("sigtrace", "memsignal", default="USR2")
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def printstacks(sig, currentframe):
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content = ""
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for tid, frame in pycompat.iteritems(sys._current_frames()):
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content += "Thread %s:\n%s\n" % (tid, util.smarttraceback(frame))
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path = pathformat % {"time": time.time(), "pid": os.getpid()}
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with open(path, "w") as f:
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f.write(content)
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# Also print to stderr
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sys.stderr.write(content)
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sys.stderr.write("\nStacktrace written to %s\n" % path)
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sys.stderr.flush()
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memorytracker = []
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def printmemory(sig, currentframe):
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try:
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# pyre-fixme[21]: Could not find `pympler`.
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from pympler import muppy, summary
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muppy.get_objects
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except ImportError:
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return
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all_objects = muppy.get_objects()
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sum1 = summary.summarize(all_objects)
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path = mempathformat % {"time": time.time(), "pid": os.getpid()}
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with open(path, "w") as f:
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f.write("\n".join(summary.format_(sum1, limit=50, sort="#")))
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def uisetup(ui):
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global pathformat, mempathformat
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pathformat = ui.config("sigtrace", "pathformat")
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mempathformat = ui.config("sigtrace", "mempathformat")
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signame = ui.config("sigtrace", "signal")
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sig = getattr(signal, "SIG" + signame, None)
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if sig is not None:
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signal.signal(sig, printstacks)
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sig2name = ui.config("sigtrace", "memsignal")
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sig2 = getattr(signal, "SIG" + sig2name, None)
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if sig2:
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signal.signal(sig2, printmemory)
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