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68 lines
2.7 KiB
Python
68 lines
2.7 KiB
Python
# Copyright (C) 2011 Google Inc. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following disclaimer
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# in the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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"""Simple routines for logging, obtaining thread stack information."""
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import sys
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import traceback
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def log_thread_state(logger, name, thread_id, msg=''):
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"""Log information about the given thread state."""
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stack = _find_thread_stack(thread_id)
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assert(stack is not None)
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logger("")
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logger("%s (tid %d) %s" % (name, thread_id, msg))
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_log_stack(logger, stack)
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logger("")
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def _find_thread_stack(thread_id):
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"""Returns a stack object that can be used to dump a stack trace for
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the given thread id (or None if the id is not found)."""
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for tid, stack in sys._current_frames().items():
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if tid == thread_id:
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return stack
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return None
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def _log_stack(logger, stack):
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"""Log a stack trace to the logger callback."""
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for filename, lineno, name, line in traceback.extract_stack(stack):
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logger('File: "%s", line %d, in %s' % (filename, lineno, name))
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if line:
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logger(' %s' % line.strip())
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def log_traceback(logger, tb):
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stack = traceback.extract_tb(tb)
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for frame_str in traceback.format_list(stack):
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for line in frame_str.split('\n'):
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if line:
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logger(" %s" % line)
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