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| 1 # Copyright 2014 The Chromium Authors. All rights reserved. | 1 # Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 # Use of this source code is governed by a BSD-style license that can be | 2 # Use of this source code is governed by a BSD-style license that can be |
| 3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
| 4 | 4 |
| 5 import logging | 5 import logging |
| 6 import os | 6 import os |
| 7 import subprocess | 7 import subprocess |
| 8 import sys | 8 import sys |
| 9 import tempfile | 9 import tempfile |
| 10 | 10 |
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| 58 if categories: | 58 if categories: |
| 59 cmd += ['--event', ','.join(categories)] | 59 cmd += ['--event', ','.join(categories)] |
| 60 self._perf_control = perf_control.PerfControl(self._device) | 60 self._perf_control = perf_control.PerfControl(self._device) |
| 61 self._perf_control.ForceAllCpusOnline(True) | 61 self._perf_control.ForceAllCpusOnline(True) |
| 62 self._perf_process = subprocess.Popen(cmd, | 62 self._perf_process = subprocess.Popen(cmd, |
| 63 stdout=self._log_file, | 63 stdout=self._log_file, |
| 64 stderr=subprocess.STDOUT) | 64 stderr=subprocess.STDOUT) |
| 65 | 65 |
| 66 def SignalAndWait(self): | 66 def SignalAndWait(self): |
| 67 perf_pids = self._device.old_interface.ExtractPid('perf') | 67 perf_pids = self._device.old_interface.ExtractPid('perf') |
| 68 self._device.old_interface.RunShellCommand( | 68 self._device.RunShellCommand('kill -SIGINT ' + ' '.join(perf_pids)) |
| 69 'kill -SIGINT ' + ' '.join(perf_pids)) | |
| 70 self._perf_process.wait() | 69 self._perf_process.wait() |
| 71 self._perf_control.ForceAllCpusOnline(False) | 70 self._perf_control.ForceAllCpusOnline(False) |
| 72 | 71 |
| 73 def _FailWithLog(self, msg): | 72 def _FailWithLog(self, msg): |
| 74 self._log_file.seek(0) | 73 self._log_file.seek(0) |
| 75 log = self._log_file.read() | 74 log = self._log_file.read() |
| 76 raise RuntimeError('%s. Log output:\n%s' % (msg, log)) | 75 raise RuntimeError('%s. Log output:\n%s' % (msg, log)) |
| 77 | 76 |
| 78 def PullResult(self, output_path): | 77 def PullResult(self, output_path): |
| 79 if not self._device.old_interface.FileExistsOnDevice( | 78 if not self._device.old_interface.FileExistsOnDevice( |
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| 110 | 109 |
| 111 @staticmethod | 110 @staticmethod |
| 112 def _PrepareDevice(device): | 111 def _PrepareDevice(device): |
| 113 if not 'BUILDTYPE' in os.environ: | 112 if not 'BUILDTYPE' in os.environ: |
| 114 os.environ['BUILDTYPE'] = 'Release' | 113 os.environ['BUILDTYPE'] = 'Release' |
| 115 return android_profiling_helper.PrepareDeviceForPerf(device) | 114 return android_profiling_helper.PrepareDeviceForPerf(device) |
| 116 | 115 |
| 117 @classmethod | 116 @classmethod |
| 118 def GetCategories(cls, device): | 117 def GetCategories(cls, device): |
| 119 perf_binary = cls._PrepareDevice(device) | 118 perf_binary = cls._PrepareDevice(device) |
| 120 return device.old_interface.RunShellCommand('%s list' % perf_binary) | 119 return device.RunShellCommand('%s list' % perf_binary) |
| 121 | 120 |
| 122 def StartTracing(self, _): | 121 def StartTracing(self, _): |
| 123 self._perf_instance = _PerfProfiler(self._device, | 122 self._perf_instance = _PerfProfiler(self._device, |
| 124 self._perf_binary, | 123 self._perf_binary, |
| 125 self._categories) | 124 self._categories) |
| 126 | 125 |
| 127 def StopTracing(self): | 126 def StopTracing(self): |
| 128 if not self._perf_instance: | 127 if not self._perf_instance: |
| 129 return | 128 return |
| 130 self._perf_instance.SignalAndWait() | 129 self._perf_instance.SignalAndWait() |
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| 182 open(json_file_name, 'w') as json_file: | 181 open(json_file_name, 'w') as json_file: |
| 183 cmd = [perfhost_path, 'script', '-s', perf_script_path, '-i', | 182 cmd = [perfhost_path, 'script', '-s', perf_script_path, '-i', |
| 184 perf_profile, '--symfs', symfs_dir, '--kallsyms', kallsyms] | 183 perf_profile, '--symfs', symfs_dir, '--kallsyms', kallsyms] |
| 185 if subprocess.call(cmd, stdout=json_file, stderr=dev_null): | 184 if subprocess.call(cmd, stdout=json_file, stderr=dev_null): |
| 186 logging.warning('Perf data to JSON conversion failed. The result will ' | 185 logging.warning('Perf data to JSON conversion failed. The result will ' |
| 187 'not contain any perf samples. You can still view the ' | 186 'not contain any perf samples. You can still view the ' |
| 188 'perf data manually as shown above.') | 187 'perf data manually as shown above.') |
| 189 return None | 188 return None |
| 190 | 189 |
| 191 return json_file_name | 190 return json_file_name |
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