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android / platform / system / tools / aidl / a446d4bf
commita446d4bfb0414f188051c121580226e402bcfedf[log] [tgz]
authorJorim Jaggi <jjaggi@google.com>Thu Nov 18 19:04:48 2021 +0100
committerJorim Jaggi <jjaggi@google.com>Mon Dec 13 15:20:22 2021 +0000
treeb7b656f5b6dd47eb4a0e907adb86cdc90308685d
parentd23ba31cd55e1499ed76d98089a697b4ef5a85cc [diff]
Add cheap aidl tracing suitable for always-on-tracing (2/3)

Instead of having only one switch to enable all binder tracing,
we seperate between stack tracking and tracing. Stack tracking
still works as before. However, the more lightweight option,
tracing using android.os.Trace, is toggleable separately and will
work on the receiver side without dumping the entire stack trace.

We also make the tracing more efficient by caching
getTransactionName and concatting the class name.

Also, enable this selectively for SysUI+Launcher, which is
currently the focus of always-on-tracing effort to figure out
what kind of binder calls these processes are calling which seems
to contribute a huge amount of jank (long binder calls are in
>= 50% of janky traces).

Test: external/perfetto/tools/record_android_trace gfx view freq sched wm am aidl
Test: atest aidl_unittest
Bug: 202278427
Change-Id: Ic71fd925c6df71f82ddacfb42360b86257feb1cb
Merged-In: Ic71fd925c6df71f82ddacfb42360b86257feb1cb
1 file changed
tree: b7b656f5b6dd47eb4a0e907adb86cdc90308685d
  1. aidl_api/
  2. build/
  3. metadata/
  4. permission/
  5. tests/
  6. trace/
  7. .clang-format ⇨ ../../../build/soong/scripts/system-clang-format-2
  8. rustfmt.toml ⇨ ../../../build/soong/scripts/rustfmt.toml
  9. aidl-format.sh
  10. aidl.cpp
  11. aidl.h
  12. aidl_checkapi.cpp
  13. aidl_checkapi.h
  14. aidl_const_expressions.cpp
  15. aidl_dumpapi.cpp
  16. aidl_dumpapi.h
  17. aidl_language.cpp
  18. aidl_language.h
  19. aidl_language_l.ll
  20. aidl_language_y.yy
  21. aidl_to_cpp.cpp
  22. aidl_to_cpp.h
  23. aidl_to_cpp_common.cpp
  24. aidl_to_cpp_common.h
  25. aidl_to_java.cpp
  26. aidl_to_java.h
  27. aidl_to_ndk.cpp
  28. aidl_to_ndk.h
  29. aidl_to_rust.cpp
  30. aidl_to_rust.h
  31. aidl_typenames.cpp
  32. aidl_typenames.h
  33. aidl_unittest.cpp
  34. Android.bp
  35. ast_java.cpp
  36. ast_java.h
  37. ast_java_unittest.cpp
  38. check_valid.cpp
  39. check_valid.h
  40. code_writer.cpp
  41. code_writer.h
  42. code_writer_unittest.cpp
  43. comments.cpp
  44. comments.h
  45. diagnostics.cpp
  46. diagnostics.h
  47. diagnostics.inc
  48. diagnostics_unittest.cpp
  49. generate_aidl_mappings.cpp
  50. generate_aidl_mappings.h
  51. generate_cpp.cpp
  52. generate_cpp.h
  53. generate_cpp_unittest.cpp
  54. generate_java.cpp
  55. generate_java.h
  56. generate_java_binder.cpp
  57. generate_ndk.cpp
  58. generate_ndk.h
  59. generate_rust.cpp
  60. generate_rust.h
  61. hiddenapi-greylist
  62. import_resolver.cpp
  63. import_resolver.h
  64. io_delegate.cpp
  65. io_delegate.h
  66. io_delegate_unittest.cpp
  67. location.cpp
  68. location.h
  69. logging.cpp
  70. logging.h
  71. main.cpp
  72. NOTICE
  73. options.cpp
  74. options.h
  75. options_unittest.cpp
  76. os.h
  77. OWNERS
  78. parser.cpp
  79. parser.h
  80. preprocess.cpp
  81. preprocess.h
  82. PREUPLOAD.cfg
  83. README.md
  84. run_integration_tests.sh
  85. TEST_MAPPING
README.md

Documentation for this project is currently maintained here:

https://source.android.com/devices/architecture/aidl/overview