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53 lines
1.8 KiB
53 lines
1.8 KiB
7 months ago
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# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""
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This is a profiler class for copying Profile-Guided-Optimization (PGO) data
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files back to the host. When Chrome is built with -fprofile-generate, it dumps
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its PGO data in a directory that this test copies back to test.profdir.
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The PGO data is found where the build happens in the chroot, which is hardcoded
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as the source_dir below.
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"""
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import logging
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import os
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import shutil
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import tarfile
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from autotest_lib.client.bin import profiler
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from autotest_lib.client.common_lib import error
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from autotest_lib.client.cros import cros_ui
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class pgo(profiler.profiler):
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"""The pgo profiler collects PGO data for Chrome."""
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version = 1
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def initialize(self, source_dir='/tmp/pgo/chrome'):
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self._source_dir = source_dir
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def start(self, test):
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# Remove the .gcda files first.
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if os.path.exists(self._source_dir):
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shutil.rmtree(self._source_dir)
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def stop(self, test):
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if not cros_ui.stop_and_wait_for_chrome_to_exit(timeout_secs=40):
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raise error.TestError('Could not stop Chrome')
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if os.path.isdir(self._source_dir):
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tar = tarfile.open(name=os.path.join(test.profdir, 'pgo.tar.bz2'),
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mode='w:bz2')
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tar.add(self._source_dir, arcname='chrome', recursive=True)
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tar.close()
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versionfile = '/opt/google/chrome/profilelocation'
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if os.path.isfile(versionfile):
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shutil.copyfile(versionfile,
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os.path.join(test.profdir, 'profiledestination'))
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else:
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logging.error('PGO dir: %s not found', self._source_dir)
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cros_ui.start(wait_for_login_prompt=False)
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