| #!/usr/bin/env python3 |
| |
| # 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 shutil |
| import signal |
| import subprocess |
| import sys |
| import tempfile |
| import time |
| import uuid |
| |
| NULL = open(os.devnull) |
| NOOUT = { |
| 'stdout': NULL, |
| 'stderr': NULL, |
| } |
| |
| UUID = str(uuid.uuid4())[-6:] |
| |
| PACKAGES_LIST_CFG = '''data_sources { |
| config { |
| name: "android.packages_list" |
| } |
| } |
| ''' |
| |
| CFG_INDENT = ' ' |
| CFG = '''buffers {{ |
| size_kb: 63488 |
| }} |
| |
| data_sources {{ |
| config {{ |
| name: "android.heapprofd" |
| heapprofd_config {{ |
| shmem_size_bytes: {shmem_size} |
| sampling_interval_bytes: {interval} |
| {target_cfg} |
| }} |
| }} |
| }} |
| |
| duration_ms: {duration} |
| write_into_file: true |
| flush_timeout_ms: 30000 |
| flush_period_ms: 604800000 |
| ''' |
| |
| # flush_period_ms of 1 week to suppress trace_processor_shell warning. |
| |
| CONTINUOUS_DUMP = """ |
| continuous_dump_config {{ |
| dump_phase_ms: 0 |
| dump_interval_ms: {dump_interval} |
| }} |
| """ |
| |
| PROFILE_LOCAL_PATH = os.path.join(tempfile.gettempdir(), UUID) |
| |
| IS_INTERRUPTED = False |
| |
| |
| def sigint_handler(sig, frame): |
| global IS_INTERRUPTED |
| IS_INTERRUPTED = True |
| |
| |
| def print_no_profile_error(): |
| print("No profiles generated", file=sys.stderr) |
| print( |
| "If this is unexpected, check " |
| "https://perfetto.dev/docs/data-sources/native-heap-profiler#troubleshooting.", |
| file=sys.stderr) |
| |
| |
| def known_issues_url(number): |
| return ('https://perfetto.dev/docs/data-sources/native-heap-profiler' |
| '#known-issues-android{}'.format(number)) |
| |
| |
| KNOWN_ISSUES = { |
| '10': known_issues_url(10), |
| 'Q': known_issues_url(10), |
| '11': known_issues_url(11), |
| 'R': known_issues_url(11), |
| } |
| |
| |
| def maybe_known_issues(): |
| release_or_codename = subprocess.check_output( |
| ['adb', 'shell', 'getprop', |
| 'ro.build.version.release_or_codename']).decode('utf-8').strip() |
| return KNOWN_ISSUES.get(release_or_codename, None) |
| |
| |
| SDK = { |
| 'R': 30, |
| } |
| |
| |
| def release_or_newer(release): |
| sdk = int( |
| subprocess.check_output( |
| ['adb', 'shell', 'getprop', |
| 'ro.system.build.version.sdk']).decode('utf-8').strip()) |
| if sdk >= SDK[release]: |
| return True |
| codename = subprocess.check_output( |
| ['adb', 'shell', 'getprop', |
| 'ro.build.version.codename']).decode('utf-8').strip() |
| return codename == release |
| |
| |
| ORDER = ['-n', '-p', '-i', '-o'] |
| |
| |
| def arg_order(action): |
| result = len(ORDER) |
| for opt in action.option_strings: |
| if opt in ORDER: |
| result = min(ORDER.index(opt), result) |
| return result, action.option_strings[0].strip('-') |
| |
| |
| def print_options(parser): |
| for action in sorted(parser._actions, key=arg_order): |
| if action.help is argparse.SUPPRESS: |
| continue |
| opts = ', '.join('`' + x + '`' for x in action.option_strings) |
| metavar = '' if action.metavar is None else ' _' + action.metavar + '_' |
| print('{}{}'.format(opts, metavar)) |
| print(': {}'.format(action.help)) |
| print() |
| |
| |
| def main(argv): |
| parser = argparse.ArgumentParser() |
| parser.add_argument( |
| "-i", |
| "--interval", |
| help="Sampling interval. " |
| "Default 4096 (4KiB)", |
| type=int, |
| default=4096) |
| parser.add_argument( |
| "-d", |
| "--duration", |
| help="Duration of profile (ms). 0 to run until interrupted. " |
| "Default: until interrupted by user.", |
| type=int, |
| default=0) |
| # This flag is a no-op now. We never start heapprofd explicitly using system |
| # properties. |
| parser.add_argument( |
| "--no-start", help="Do not start heapprofd.", action='store_true') |
| parser.add_argument( |
| "-p", |
| "--pid", |
| help="Comma-separated list of PIDs to " |
| "profile.", |
| metavar="PIDS") |
| parser.add_argument( |
| "-n", |
| "--name", |
| help="Comma-separated list of process " |
| "names to profile.", |
| metavar="NAMES") |
| parser.add_argument( |
| "-c", |
| "--continuous-dump", |
| help="Dump interval in ms. 0 to disable continuous dump.", |
| type=int, |
| default=0) |
| parser.add_argument( |
| "--heaps", |
| help="Comma-separated list of heaps to collect, e.g: malloc,art. " |
| "Requires Android 12.", |
| metavar="HEAPS") |
| parser.add_argument( |
| "--all-heaps", |
| action="store_true", |
| help="Collect allocations from all heaps registered by target.") |
| parser.add_argument( |
| "--no-android-tree-symbolization", |
| action="store_true", |
| help="Do not symbolize using currently lunched target in the " |
| "Android tree.") |
| parser.add_argument( |
| "--disable-selinux", |
| action="store_true", |
| help="Disable SELinux enforcement for duration of " |
| "profile.") |
| parser.add_argument( |
| "--no-versions", |
| action="store_true", |
| help="Do not get version information about APKs.") |
| parser.add_argument( |
| "--no-running", |
| action="store_true", |
| help="Do not target already running processes. Requires Android 11.") |
| parser.add_argument( |
| "--no-startup", |
| action="store_true", |
| help="Do not target processes that start during " |
| "the profile. Requires Android 11.") |
| parser.add_argument( |
| "--shmem-size", |
| help="Size of buffer between client and " |
| "heapprofd. Default 8MiB. Needs to be a power of two " |
| "multiple of 4096, at least 8192.", |
| type=int, |
| default=8 * 1048576) |
| parser.add_argument( |
| "--block-client", |
| help="When buffer is full, block the " |
| "client to wait for buffer space. Use with caution as " |
| "this can significantly slow down the client. " |
| "This is the default", |
| action="store_true") |
| parser.add_argument( |
| "--block-client-timeout", |
| help="If --block-client is given, do not block any allocation for " |
| "longer than this timeout (us).", |
| type=int) |
| parser.add_argument( |
| "--no-block-client", |
| help="When buffer is full, stop the " |
| "profile early.", |
| action="store_true") |
| parser.add_argument( |
| "--idle-allocations", |
| help="Keep track of how many " |
| "bytes were unused since the last dump, per " |
| "callstack", |
| action="store_true") |
| parser.add_argument( |
| "--dump-at-max", |
| help="Dump the maximum memory usage " |
| "rather than at the time of the dump.", |
| action="store_true") |
| parser.add_argument( |
| "--disable-fork-teardown", |
| help="Do not tear down client in forks. This can be useful for programs " |
| "that use vfork. Android 11+ only.", |
| action="store_true") |
| parser.add_argument( |
| "--simpleperf", |
| action="store_true", |
| help="Get simpleperf profile of heapprofd. This is " |
| "only for heapprofd development.") |
| parser.add_argument( |
| "--trace-to-text-binary", |
| help="Path to local trace to text. For debugging.") |
| parser.add_argument( |
| "--print-config", |
| action="store_true", |
| help="Print config instead of running. For debugging.") |
| parser.add_argument( |
| "-o", |
| "--output", |
| help="Output directory.", |
| metavar="DIRECTORY", |
| default=None) |
| parser.add_argument( |
| "--print-options", action="store_true", help=argparse.SUPPRESS) |
| |
| args = parser.parse_args() |
| if args.print_options: |
| print_options(parser) |
| return 0 |
| fail = False |
| if args.block_client and args.no_block_client: |
| print( |
| "FATAL: Both block-client and no-block-client given.", file=sys.stderr) |
| fail = True |
| if args.pid is None and args.name is None: |
| print("FATAL: Neither 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 args.shmem_size % 4096: |
| print("FATAL: shmem-size is not a multiple of 4096.", file=sys.stderr) |
| fail = True |
| if args.shmem_size < 8192: |
| print("FATAL: shmem-size is less than 8192.", file=sys.stderr) |
| fail = True |
| if args.shmem_size & (args.shmem_size - 1): |
| print("FATAL: shmem-size is not a power of two.", file=sys.stderr) |
| fail = True |
| |
| target_cfg = "" |
| if not args.no_block_client: |
| target_cfg += CFG_INDENT + "block_client: true\n" |
| if args.block_client_timeout: |
| target_cfg += ( |
| CFG_INDENT + |
| "block_client_timeout_us: %s\n" % args.block_client_timeout) |
| if args.no_startup: |
| target_cfg += CFG_INDENT + "no_startup: true\n" |
| if args.no_running: |
| target_cfg += CFG_INDENT + "no_running: true\n" |
| if args.dump_at_max: |
| target_cfg += CFG_INDENT + "dump_at_max: true\n" |
| if args.disable_fork_teardown: |
| target_cfg += CFG_INDENT + "disable_fork_teardown: true\n" |
| if args.all_heaps: |
| target_cfg += CFG_INDENT + "all_heaps: true\n" |
| if args.pid: |
| for pid in args.pid.split(','): |
| try: |
| pid = int(pid) |
| except ValueError: |
| print("FATAL: invalid PID %s" % pid, file=sys.stderr) |
| fail = True |
| target_cfg += CFG_INDENT + 'pid: {}\n'.format(pid) |
| if args.name: |
| for name in args.name.split(','): |
| target_cfg += CFG_INDENT + 'process_cmdline: "{}"\n'.format(name) |
| if args.heaps: |
| for heap in args.heaps.split(','): |
| target_cfg += CFG_INDENT + 'heaps: "{}"\n'.format(heap) |
| |
| if fail: |
| parser.print_help() |
| return 1 |
| |
| trace_to_text_binary = args.trace_to_text_binary |
| |
| if args.continuous_dump: |
| target_cfg += CONTINUOUS_DUMP.format(dump_interval=args.continuous_dump) |
| cfg = CFG.format( |
| interval=args.interval, |
| duration=args.duration, |
| target_cfg=target_cfg, |
| shmem_size=args.shmem_size) |
| if not args.no_versions: |
| cfg += PACKAGES_LIST_CFG |
| |
| if args.print_config: |
| print(cfg) |
| return 0 |
| |
| # Do this AFTER print_config so we do not download trace_to_text only to |
| # print out the config. |
| if trace_to_text_binary is None: |
| trace_to_text_binary = get_perfetto_prebuilt( |
| 'trace_to_text', soft_fail=True) |
| |
| known_issues = maybe_known_issues() |
| if known_issues: |
| print('If you are experiencing problems, please see the known issues for ' |
| 'your release: {}.'.format(known_issues)) |
| |
| # TODO(fmayer): Maybe feature detect whether we can remove traces instead of |
| # this. |
| uuid_trace = release_or_newer('R') |
| if uuid_trace: |
| profile_device_path = '/data/misc/perfetto-traces/profile-' + UUID |
| else: |
| user = subprocess.check_output(['adb', 'shell', |
| 'whoami']).decode('utf-8').strip() |
| profile_device_path = '/data/misc/perfetto-traces/profile-' + user |
| |
| perfetto_cmd = ('CFG=\'{cfg}\'; echo ${{CFG}} | ' |
| 'perfetto --txt -c - -o ' + profile_device_path + ' -d') |
| |
| 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 args.simpleperf: |
| subprocess.check_call([ |
| 'adb', 'shell', 'mkdir -p /data/local/tmp/heapprofd_profile && ' |
| 'cd /data/local/tmp/heapprofd_profile &&' |
| '(nohup simpleperf record -g -p $(pidof heapprofd) 2>&1 &) ' |
| '> /dev/null' |
| ]) |
| |
| profile_target = PROFILE_LOCAL_PATH |
| if args.output is not None: |
| profile_target = args.output |
| else: |
| os.mkdir(profile_target) |
| |
| if not os.path.isdir(profile_target): |
| print( |
| "Output directory {} not found".format(profile_target), file=sys.stderr) |
| return 1 |
| |
| if os.listdir(profile_target): |
| print( |
| "Output directory {} not empty".format(profile_target), file=sys.stderr) |
| return 1 |
| |
| perfetto_pid = subprocess.check_output( |
| ['adb', 'exec-out', perfetto_cmd.format(cfg=cfg)]).strip() |
| try: |
| perfetto_pid = int(perfetto_pid.strip()) |
| except ValueError: |
| print("Failed to invoke perfetto: {}".format(perfetto_pid), file=sys.stderr) |
| return 1 |
| |
| old_handler = signal.signal(signal.SIGINT, sigint_handler) |
| print("Profiling active. Press Ctrl+C to terminate.") |
| print("You may disconnect your device.") |
| print() |
| exists = True |
| device_connected = True |
| while not device_connected or (exists and not IS_INTERRUPTED): |
| exists = subprocess.call( |
| ['adb', 'shell', '[ -d /proc/{} ]'.format(perfetto_pid)], **NOOUT) == 0 |
| device_connected = subprocess.call(['adb', 'shell', 'true'], **NOOUT) == 0 |
| time.sleep(1) |
| print("Waiting for profiler shutdown...") |
| signal.signal(signal.SIGINT, old_handler) |
| if IS_INTERRUPTED: |
| # Not check_call because it could have existed in the meantime. |
| subprocess.call(['adb', 'shell', 'kill', '-INT', str(perfetto_pid)]) |
| if args.simpleperf: |
| subprocess.check_call(['adb', 'shell', 'killall', '-INT', 'simpleperf']) |
| print("Waiting for simpleperf to exit.") |
| while subprocess.call( |
| ['adb', 'shell', '[ -f /proc/$(pidof simpleperf)/exe ]'], **NOOUT) == 0: |
| time.sleep(1) |
| subprocess.check_call( |
| ['adb', 'pull', '/data/local/tmp/heapprofd_profile', profile_target]) |
| print("Pulled simpleperf profile to " + profile_target + |
| "/heapprofd_profile") |
| |
| # Wait for perfetto cmd to return. |
| while exists: |
| exists = subprocess.call( |
| ['adb', 'shell', '[ -d /proc/{} ]'.format(perfetto_pid)]) == 0 |
| time.sleep(1) |
| |
| profile_host_path = os.path.join(profile_target, 'raw-trace') |
| subprocess.check_call(['adb', 'pull', profile_device_path, profile_host_path], |
| stdout=NULL) |
| if uuid_trace: |
| subprocess.check_call(['adb', 'shell', 'rm', profile_device_path], |
| stdout=NULL) |
| |
| if trace_to_text_binary is None: |
| print('Wrote profile to {}'.format(profile_host_path)) |
| print( |
| 'This file can be opened using the Perfetto UI, https://ui.perfetto.dev' |
| ) |
| return 0 |
| |
| binary_path = os.getenv('PERFETTO_BINARY_PATH') |
| if not args.no_android_tree_symbolization: |
| product_out = os.getenv('ANDROID_PRODUCT_OUT') |
| if product_out: |
| product_out_symbols = product_out + '/symbols' |
| else: |
| product_out_symbols = None |
| |
| if binary_path is None: |
| binary_path = product_out_symbols |
| elif product_out_symbols is not None: |
| binary_path += ":" + product_out_symbols |
| |
| trace_file = os.path.join(profile_target, 'raw-trace') |
| concat_files = [trace_file] |
| |
| if binary_path is not None: |
| with open(os.path.join(profile_target, 'symbols'), 'w') as fd: |
| ret = subprocess.call([ |
| trace_to_text_binary, 'symbolize', |
| os.path.join(profile_target, 'raw-trace') |
| ], |
| env=dict( |
| os.environ, PERFETTO_BINARY_PATH=binary_path), |
| stdout=fd) |
| if ret == 0: |
| concat_files.append(os.path.join(profile_target, 'symbols')) |
| else: |
| print("Failed to symbolize. Continuing without symbols.", file=sys.stderr) |
| |
| proguard_map = os.getenv('PERFETTO_PROGUARD_MAP') |
| if proguard_map is not None: |
| with open(os.path.join(profile_target, 'deobfuscation-packets'), 'w') as fd: |
| ret = subprocess.call([ |
| trace_to_text_binary, 'deobfuscate', |
| os.path.join(profile_target, 'raw-trace') |
| ], |
| env=dict( |
| os.environ, PERFETTO_PROGUARD_MAP=proguard_map), |
| stdout=fd) |
| if ret == 0: |
| concat_files.append(os.path.join(profile_target, 'deobfuscation-packets')) |
| else: |
| print( |
| "Failed to deobfuscate. Continuing without deobfuscated.", |
| file=sys.stderr) |
| |
| if len(concat_files) > 1: |
| with open(os.path.join(profile_target, 'symbolized-trace'), 'wb') as out: |
| for fn in concat_files: |
| with open(fn, 'rb') as inp: |
| while True: |
| buf = inp.read(4096) |
| if not buf: |
| break |
| out.write(buf) |
| trace_file = os.path.join(profile_target, 'symbolized-trace') |
| |
| trace_to_text_output = subprocess.check_output( |
| [trace_to_text_binary, 'profile', trace_file]) |
| profile_path = None |
| for word in trace_to_text_output.decode('utf-8').split(): |
| if 'heap_profile-' in word: |
| profile_path = word |
| if profile_path is None: |
| print_no_profile_error() |
| return 1 |
| |
| profile_files = os.listdir(profile_path) |
| if not profile_files: |
| print_no_profile_error() |
| return 1 |
| |
| for profile_file in profile_files: |
| shutil.copy(os.path.join(profile_path, profile_file), profile_target) |
| |
| symlink_path = None |
| if not sys.platform.startswith('win'): |
| subprocess.check_call( |
| ['gzip'] + [os.path.join(profile_target, x) for x in profile_files]) |
| if args.output is None: |
| symlink_path = os.path.join( |
| os.path.dirname(profile_target), "heap_profile-latest") |
| if os.path.lexists(symlink_path): |
| os.unlink(symlink_path) |
| os.symlink(profile_target, symlink_path) |
| |
| if symlink_path is not None: |
| print("Wrote profiles to {} (symlink {})".format(profile_target, |
| symlink_path)) |
| else: |
| print("Wrote profiles to {}".format(profile_target)) |
| |
| print("The raw-trace file can be viewed using https://ui.perfetto.dev.") |
| print("The heap_dump.* files can be viewed using pprof/ (Googlers only) " + |
| "or https://www.speedscope.app/.") |
| print("The two above are equivalent. The raw-trace contains the union of " + |
| "all the heap dumps.") |
| |
| |
| # BEGIN_SECTION_GENERATED_BY(roll-prebuilts) |
| # Revision: v25.0 |
| PERFETTO_PREBUILT_MANIFEST = [{ |
| 'tool': |
| 'trace_to_text', |
| 'arch': |
| 'mac-amd64', |
| 'file_name': |
| 'trace_to_text', |
| 'file_size': |
| 6525752, |
| 'url': |
| 'https://commondatastorage.googleapis.com/perfetto-luci-artifacts/v25.0/mac-amd64/trace_to_text', |
| 'sha256': |
| '64ccf6bac87825145691c6533412e514891f82300d68ff7ce69e8d2ca69aaf62', |
| 'platform': |
| 'darwin', |
| 'machine': ['x86_64'] |
| }, { |
| 'tool': |
| 'trace_to_text', |
| 'arch': |
| 'mac-arm64', |
| 'file_name': |
| 'trace_to_text', |
| 'file_size': |
| 5661424, |
| 'url': |
| 'https://commondatastorage.googleapis.com/perfetto-luci-artifacts/v25.0/mac-arm64/trace_to_text', |
| 'sha256': |
| 'fbb6d256c96cdc296f2faec2965d16a1527c4900e66a33aca979ff1c336a9f2f', |
| 'platform': |
| 'darwin', |
| 'machine': ['arm64'] |
| }, { |
| 'tool': |
| 'trace_to_text', |
| 'arch': |
| 'windows-amd64', |
| 'file_name': |
| 'trace_to_text.exe', |
| 'file_size': |
| 5925888, |
| 'url': |
| 'https://commondatastorage.googleapis.com/perfetto-luci-artifacts/v25.0/windows-amd64/trace_to_text.exe', |
| 'sha256': |
| '29e50ec4d8e28c7c322ba13273afcce80c63fe7d9f182b83af0e2077b4d2b952', |
| 'platform': |
| 'win32', |
| 'machine': ['amd64'] |
| }, { |
| 'tool': |
| 'trace_to_text', |
| 'arch': |
| 'linux-amd64', |
| 'file_name': |
| 'trace_to_text', |
| 'file_size': |
| 6939560, |
| 'url': |
| 'https://commondatastorage.googleapis.com/perfetto-luci-artifacts/v25.0/linux-amd64/trace_to_text', |
| 'sha256': |
| '109f4ff3bbd47633b0c08a338f1230e69d529ddf1584656ed45d8a59acaaabeb', |
| 'platform': |
| 'linux', |
| 'machine': ['x86_64'] |
| }] |
| |
| |
| # DO NOT EDIT. If you wish to make edits to this code, you need to change only |
| # //tools/get_perfetto_prebuilt.py and run /tools/roll-prebuilts to regenerate |
| # all the others scripts this is embedded into. |
| def get_perfetto_prebuilt(tool_name, soft_fail=False, arch=None): |
| """ Downloads the prebuilt, if necessary, and returns its path on disk. """ |
| |
| # The first time this is invoked, it downloads the |url| and caches it into |
| # ~/.perfetto/prebuilts/$tool_name. On subsequent invocations it just runs the |
| # cached version. |
| def download_or_get_cached(file_name, url, sha256): |
| import os, hashlib, subprocess |
| dir = os.path.join( |
| os.path.expanduser('~'), '.local', 'share', 'perfetto', 'prebuilts') |
| os.makedirs(dir, exist_ok=True) |
| bin_path = os.path.join(dir, file_name) |
| sha256_path = os.path.join(dir, file_name + '.sha256') |
| needs_download = True |
| |
| # Avoid recomputing the SHA-256 on each invocation. The SHA-256 of the last |
| # download is cached into file_name.sha256, just check if that matches. |
| if os.path.exists(bin_path) and os.path.exists(sha256_path): |
| with open(sha256_path, 'rb') as f: |
| digest = f.read().decode() |
| if digest == sha256: |
| needs_download = False |
| |
| if needs_download: |
| # Either the filed doesn't exist or the SHA256 doesn't match. |
| tmp_path = bin_path + '.tmp' |
| print('Downloading ' + url) |
| subprocess.check_call(['curl', '-f', '-L', '-#', '-o', tmp_path, url]) |
| with open(tmp_path, 'rb') as fd: |
| actual_sha256 = hashlib.sha256(fd.read()).hexdigest() |
| if actual_sha256 != sha256: |
| raise Exception('Checksum mismatch for %s (actual: %s, expected: %s)' % |
| (url, actual_sha256, sha256)) |
| os.chmod(tmp_path, 0o755) |
| os.rename(tmp_path, bin_path) |
| with open(sha256_path, 'w') as f: |
| f.write(sha256) |
| return bin_path |
| # --- end of download_or_get_cached() --- |
| |
| # --- get_perfetto_prebuilt() function starts here. --- |
| import os, platform, sys |
| plat = sys.platform.lower() |
| machine = platform.machine().lower() |
| manifest_entry = None |
| for entry in PERFETTO_PREBUILT_MANIFEST: |
| # If the caller overrides the arch, just match that (for Android prebuilts). |
| if arch and entry.get('arch') == arch: |
| manifest_entry = entry |
| break |
| # Otherwise guess the local machine arch. |
| if entry.get('tool') == tool_name and entry.get( |
| 'platform') == plat and machine in entry.get('machine', []): |
| manifest_entry = entry |
| break |
| if manifest_entry is None: |
| if soft_fail: |
| return None |
| raise Exception( |
| ('No prebuilts available for %s-%s\n' % (plat, machine)) + |
| 'See https://perfetto.dev/docs/contributing/build-instructions') |
| |
| return download_or_get_cached( |
| file_name=manifest_entry['file_name'], |
| url=manifest_entry['url'], |
| sha256=manifest_entry['sha256']) |
| |
| |
| # END_SECTION_GENERATED_BY(roll-prebuilts) |
| |
| if __name__ == '__main__': |
| sys.exit(main(sys.argv)) |
