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  • Committer: Canonical.com Patch Queue Manager
  • Date: 2007-04-01 06:48:38 UTC
  • mfrom: (2389.1.1 0.15-to-trunk)
  • Revision ID: pqm@pqm.ubuntu.com-20070401064838-34903c7b0d0c8007
merge 0.15 back to dev

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bzrlib/strace.py
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"""Support for running strace against the current process."""
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import errno
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import os
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import signal
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import subprocess
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    :return: a tuple: function-result, a StraceResult.
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    """
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    # capture strace output to a file
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    log_file = tempfile.NamedTemporaryFile()
 
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    log_file = tempfile.TemporaryFile()
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    log_file_fd = log_file.fileno()
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    pid = os.getpid()
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    # start strace
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    proc = subprocess.Popen(['strace',
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        '-f', '-r', '-tt', '-p', str(pid), '-o', log_file.name
 
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        '-f', '-r', '-tt', '-p', str(pid),
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        ],
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        stdout=subprocess.PIPE,
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        stderr=subprocess.STDOUT)
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    # Wait for strace to attach
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    attached_notice = proc.stdout.readline()
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    # Run the function to strace
 
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        stderr=log_file_fd,
 
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        stdout=log_file_fd)
 
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    # TODO? confirm its started (test suite should be sufficient)
 
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    # (can loop on proc.pid, but that may not indicate started and attached.)
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    result = function(*args, **kwargs)
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    # stop strace
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    os.kill(proc.pid, signal.SIGQUIT)