Gitiles
Code Review Sign In
gerrit-public.fairphone.software / platform / external / perfetto / 2d0b225dcc40ea2289a1e67864a407a035932136
commit2d0b225dcc40ea2289a1e67864a407a035932136[log] [tgz]
authorPrimiano Tucci <primiano@google.com>Thu Jan 25 13:37:50 2018 +0000
committerPrimiano Tucci <primiano@google.com>Thu Jan 25 13:37:50 2018 +0000
tree812e7c904eca464167f561dd5c14cbc93d90c544
parentca2858ecb88c0f55647dd896afcc8083f216b340 [diff]
IPC: introduce dont_reply flag to avoid useless empty replies

This is to avoid wasteful wakeups (and CPU usage) for methods like
NotifySharedMemoryUpdate(), where neither the client nor the host
have anything meaningful to attach in reply.
This allows to reduce our cpu usage, removing one IPC (hence a
context switch) in the traced -> traced_probes direction.

Change-Id: Id56e124bbad0870c4a29653289bf021cfdbf4c14
8 files changed
tree: 812e7c904eca464167f561dd5c14cbc93d90c544
  1. build_overrides/
  2. buildtools/
  3. cts/
  4. debian/
  5. docs/
  6. gn/
  7. include/
  8. infra/
  9. protos/
  10. src/
  11. test/
  12. tools/
  13. .clang-format
  14. .gitignore
  15. .gn
  16. .travis.yml
  17. Android.bp
  18. Android.bp.extras
  19. BUILD.gn
  20. codereview.settings
  21. MODULE_LICENSE_APACHE2
  22. NOTICE
  23. OWNERS
  24. perfetto.rc
  25. PRESUBMIT.py
  26. README.chromium
  27. README.md
README.md

Perfetto - Performance instrumentation and logging for POSIX platforms

This project is meant to be built both as part of the Android tree and from a standalone checkout

For internal docs see this page

Supported platforms

Android is the platform targeted in the first milestones. Right now Linux desktop and OSX are maintained best-effort.

Contributing

This project uses Android AOSP Gerrit for code reviews and uses the Google C++ style. Currently targets -std=c++11.

You can use both git cl upload from Chromium depot tools or Android repo to upload patches.

git cl is quite convenient as it supports code auto-formatting via git cl format.

See https://source.android.com/source/contributing for more details about external contributions and CLA signing.

Build instructions

See docs/build_instructions.md

Running Perfetto

See docs/running_perfetto.md

Continuous integration

Continuous build and test coverage is available at perfetto-ci.appspot.com. Trybots: CLs uploaded to gerrit are automatically submitted to TravisCI within one minute and made available on the CI page above. The relevant code lives in the infra/ directory.

Run tests

On the host (Linux / OSX)

$ tools/ninja -C out/default (tracing_unittests | tracing_benchmarks)
$ out/default/tracing_unittests --gtest_help

On Android

Either connect a device in ADB mode or use the bundled emulator.

To start the emulator:
$ tools/run_android_emulator (arm | arm64) &

To run the tests (either on the emulator or physical device):
$ tools/run_android_test out/default tracing_unittests