| commit | 676f0cca7d933f3aef00d3f1920b7934c97d25a4 | [log] [tgz] |
|---|---|---|
| author | Primiano Tucci <primiano@google.com> | Mon Dec 03 20:03:26 2018 +0100 |
| committer | Primiano Tucci <primiano@google.com> | Tue Dec 04 07:10:21 2018 +0000 |
| tree | 1b66e525ffd7a8f23b544a0d8780d82466a65a37 | |
| parent | 9eaff40b437ec34fd16c8e966b3356a930f52a9e [diff] |
Add libperfetto_android_internal.so library to access HAL/VNDK This CL introduces a new shared library, meant to be used only in in-android-tree builds, to access Android internal HAL services via hwbinder (and in future maybe other sw binder interfaces). The concrete use case is battery tracing (see CLs based op top of this). The reasons for splitting off a dedicated .so are twofold: 1) Keep non-NDK dependencies isolated in a standalone target and avoid polluting the codebase with #ifdefs. 2) Avoid the memory impact of pulling the various VNDK .so(s) unless necessary. Using hwbinder requires pulling 6 (or more) .so(s), which adds 150 KB of private dirty memory at load time due to linker relocations. The plan is to dlopen() libperfetto_android_internal.so only when required and unload it when unneeded. Bug: 113076327 Change-Id: I55b76d3c6637fb3604afff6b27870418e4831aa1
Perfetto is an open-source project for performance instrumentation and tracing of Linux/Android/Chrome platforms and user-space apps.
See www.perfetto.dev for docs.