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# Copyright (C) 2012 Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the Google name nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import logging
import re
_log = logging.getLogger(__name__)
class ProfilerFactory(object):
@classmethod
def create_profiler(cls, host, executable_path, output_dir, identifier=None):
if host.platform.is_mac():
return Instruments(host, executable_path, output_dir, identifier)
return GooglePProf(host, executable_path, output_dir, identifier)
class Profiler(object):
def __init__(self, host, executable_path, output_dir, identifier=None):
self._host = host
self._executable_path = executable_path
self._output_dir = output_dir
self._identifier = "test"
self._host.filesystem.maybe_make_directory(self._output_dir)
def adjusted_environment(self, env):
return env
def attach_to_pid(self, pid):
pass
def profile_after_exit(self):
pass
class SingleFileOutputProfiler(Profiler):
def __init__(self, host, executable_path, output_dir, output_suffix, identifier=None):
super(SingleFileOutputProfiler, self).__init__(host, executable_path, output_dir, identifier)
self._output_path = self._host.workspace.find_unused_filename(self._output_dir, self._identifier, output_suffix)
class GooglePProf(SingleFileOutputProfiler):
def __init__(self, host, executable_path, output_dir, identifier=None):
super(GooglePProf, self).__init__(host, executable_path, output_dir, "pprof", identifier)
def adjusted_environment(self, env):
env['CPUPROFILE'] = self._output_path
return env
def _first_ten_lines_of_profile(self, pprof_output):
match = re.search("^Total:[^\n]*\n((?:[^\n]*\n){0,10})", pprof_output, re.MULTILINE)
return match.group(1) if match else None
def profile_after_exit(self):
# FIXME: We should have code to find the right google-pprof executable, some Googlers have
# google-pprof installed as "pprof" on their machines for them.
# FIXME: Similarly we should find the right perl!
pprof_args = ['/usr/bin/perl', '/usr/bin/google-pprof', '--text', self._executable_path, self._output_path]
profile_text = self._host.executive.run_command(pprof_args)
print self._first_ten_lines_of_profile(profile_text)
# FIXME: iprofile is a newer commandline interface to replace /usr/bin/instruments.
class Instruments(SingleFileOutputProfiler):
def __init__(self, host, executable_path, output_dir, identifier=None):
super(Instruments, self).__init__(host, executable_path, output_dir, "trace", identifier)
# FIXME: We may need a way to find this tracetemplate on the disk
_time_profile = "/Applications/Xcode.app/Contents/Applications/Instruments.app/Contents/Resources/templates/Time Profiler.tracetemplate"
def attach_to_pid(self, pid):
cmd = ["instruments", "-t", self._time_profile, "-D", self._output_path, "-p", pid]
cmd = map(unicode, cmd)
self._host.executive.popen(cmd)
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