| #!/usr/bin/env python |
| |
| # Copyright (C) 2017 The Android Open Source Project |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| from __future__ import absolute_import |
| from __future__ import division |
| from __future__ import print_function |
| |
| import argparse |
| import atexit |
| import hashlib |
| import os |
| import signal |
| import subprocess |
| import sys |
| import tempfile |
| import time |
| import urllib |
| |
| TRACE_TO_TEXT_SHAS = { |
| 'linux': '02b80116b5873dc00d82ff50c79f89909e054e78', |
| 'mac': 'f0fcf2e9adaacd28c1b712b241d5f02e9f746741', |
| } |
| TRACE_TO_TEXT_PATH = tempfile.gettempdir() |
| TRACE_TO_TEXT_BASE_URL = ( |
| 'https://storage.googleapis.com/perfetto/') |
| |
| def check_hash(file_name, sha_value): |
| with open(file_name, 'rb') as fd: |
| # TODO(fmayer): Chunking. |
| file_hash = hashlib.sha1(fd.read()).hexdigest() |
| return file_hash == sha_value |
| |
| |
| def load_trace_to_text(platform): |
| sha_value = TRACE_TO_TEXT_SHAS[platform] |
| file_name = 'trace_to_text-' + platform + '-' + sha_value |
| local_file = os.path.join(TRACE_TO_TEXT_PATH, file_name) |
| |
| if os.path.exists(local_file): |
| if not check_hash(local_file, sha_value): |
| os.remove(local_file) |
| else: |
| return local_file |
| |
| url = TRACE_TO_TEXT_BASE_URL + file_name |
| urllib.urlretrieve(url, local_file) |
| if not check_hash(local_file, sha_value): |
| os.remove(local_file) |
| raise ValueError("Invalid signature.") |
| os.chmod(local_file, 0o755) |
| return local_file |
| |
| |
| NULL = open('/dev/null', 'r') |
| |
| CFG_IDENT = ' ' |
| CFG='''buffers {{ |
| size_kb: 32768 |
| }} |
| |
| data_sources {{ |
| config {{ |
| name: "android.heapprofd" |
| heapprofd_config {{ |
| |
| all: {all} |
| sampling_interval_bytes: {interval} |
| {target_cfg} |
| continuous_dump_config {{ |
| dump_phase_ms: 0 |
| dump_interval_ms: 1000 |
| }} |
| }} |
| }} |
| }} |
| |
| duration_ms: {duration} |
| ''' |
| |
| PERFETTO_CMD=('CFG=\'{}\'; echo ${{CFG}} | ' |
| 'perfetto --txt -c - -o /data/misc/perfetto-traces/profile -d') |
| IS_INTERRUPTED = False |
| def sigint_handler(sig, frame): |
| global IS_INTERRUPTED |
| IS_INTERRUPTED = True |
| |
| |
| def main(argv): |
| parser = argparse.ArgumentParser() |
| parser.add_argument("-i", "--interval", help="Sampling interval. " |
| "Default 128000 (128kB)", type=int, default=128000) |
| parser.add_argument("-d", "--duration", help="Duration of profile (ms). " |
| "Default 1 minute", type=int, default=60000) |
| parser.add_argument("-a", "--all", help="Profile the whole system", |
| action='store_true') |
| parser.add_argument("--no-start", help="Do not start heapprofd", |
| action='store_true') |
| parser.add_argument("-p", "--pid", help="PIDs to profile", nargs='+', |
| type=int) |
| parser.add_argument("-n", "--name", help="Process names to profile", |
| nargs='+') |
| parser.add_argument("-t", "--trace-to-text-binary", |
| help="Path to local trace to text. For debugging.") |
| parser.add_argument("--disable-selinux", action="store_true", |
| help="Disable SELinux enforcement for duration of " |
| "profile") |
| |
| args = parser.parse_args() |
| |
| fail = False |
| if args.all is None and args.pid is None and args.name is None: |
| print("FATAL: Neither --all nor PID nor NAME given.", file=sys.stderr) |
| fail = True |
| if args.duration is None: |
| print("FATAL: No duration given.", file=sys.stderr) |
| fail = True |
| if args.interval is None: |
| print("FATAL: No interval given.", file=sys.stderr) |
| fail = True |
| if fail: |
| parser.print_help() |
| return 1 |
| target_cfg = "" |
| if args.pid: |
| for pid in args.pid: |
| target_cfg += '{}pid: {}\n'.format(CFG_IDENT, pid) |
| if args.name: |
| for name in args.name: |
| target_cfg += '{}process_cmdline: "{}"\n'.format(CFG_IDENT, name) |
| |
| trace_to_text_binary = args.trace_to_text_binary |
| if trace_to_text_binary is None: |
| platform = None |
| if sys.platform.startswith('linux'): |
| platform = 'linux' |
| elif sys.platform.startswith('darwin'): |
| platform = 'mac' |
| else: |
| print("Invalid platform: {}".format(sys.platform), file=sys.stderr) |
| return 1 |
| |
| trace_to_text_binary = load_trace_to_text(platform) |
| |
| cfg = CFG.format(all=str(args.all == True).lower(), interval=args.interval, |
| duration=args.duration, target_cfg=target_cfg) |
| |
| if args.disable_selinux: |
| enforcing = subprocess.check_output(['adb', 'shell', 'getenforce']) |
| atexit.register(subprocess.check_call, |
| ['adb', 'shell', 'su root setenforce %s' % enforcing]) |
| subprocess.check_call(['adb', 'shell', 'su root setenforce 0']) |
| |
| if not args.no_start: |
| atexit.register(subprocess.check_call, |
| ['adb', 'shell', 'su root stop heapprofd']) |
| subprocess.check_call(['adb', 'shell', 'su root start heapprofd']) |
| |
| perfetto_pid = subprocess.check_output( |
| ['adb', 'exec-out', PERFETTO_CMD.format(cfg)]).strip() |
| |
| old_handler = signal.signal(signal.SIGINT, sigint_handler) |
| print("Profiling active. Press Ctrl+C to terminate.") |
| exists = True |
| while exists and not IS_INTERRUPTED: |
| exists = subprocess.call( |
| ['adb', 'shell', '[ -d /proc/{} ]'.format(perfetto_pid)]) == 0 |
| time.sleep(1) |
| signal.signal(signal.SIGINT, old_handler) |
| if IS_INTERRUPTED: |
| # Not check_call because it could have existed in the meantime. |
| subprocess.call(['adb', 'shell', 'kill', '-INT', perfetto_pid]) |
| |
| # Wait for perfetto cmd to return. |
| while exists: |
| exists = subprocess.call( |
| ['adb', 'shell', '[ -d /proc/{} ]'.format(perfetto_pid)]) == 0 |
| time.sleep(1) |
| |
| subprocess.check_call(['adb', 'pull', '/data/misc/perfetto-traces/profile', |
| '/tmp/profile'], stdout=NULL) |
| trace_to_text_output = subprocess.check_output( |
| [trace_to_text_binary, 'profile', '/tmp/profile'], |
| stderr=NULL) |
| profile_path = None |
| for word in trace_to_text_output.split(): |
| if 'heap_profile-' in word: |
| profile_path = word |
| if profile_path is None: |
| print("Could not find trace_to_text output path.", file=sys.stderr) |
| return 1 |
| |
| profile_files = os.listdir(profile_path) |
| if not profile_files: |
| print("No profiles generated", file=sys.stderr) |
| return 1 |
| |
| subprocess.check_call(['gzip'] + [os.path.join(profile_path, x) for x in |
| os.listdir(profile_path)]) |
| |
| symlink_path = os.path.join(os.path.dirname(profile_path), |
| "heap_profile-latest") |
| os.unlink(symlink_path) |
| os.symlink(profile_path, symlink_path) |
| |
| print("Wrote profiles to {} (symlink {})".format(profile_path, symlink_path)) |
| print("These can be viewed using pprof. Googlers: head to pprof/ and " |
| "upload them.") |
| |
| |
| if __name__ == '__main__': |
| sys.exit(main(sys.argv)) |