traced_probes: Add android.aflags data source#5209
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This data source captures snapshots of Android aconfig flags. It invokes 'aflags list --format proto' and parses the binary protobuf. The data source supports one-shot capture at the start of the trace or periodic polling. It uses an incremental state to only emit flags that have changed since the last snapshot. The trace format uses raw strings for flag metadata (package, name, etc.) to keep the implementation simple and avoid interning complexity, adding ~120KB per full system snapshot. Test: perfetto_unittests --gtest_filter='AndroidAflagsDataSourceTest.*' Test: record_android_trace with android.aflags data source Change-Id: Icff7ad647df9c332e1e9a1f94b5fc935b19f2a12
Change-Id: I905dbde109dc9d7d983a9b9d0d442dec8037106a
Change-Id: Ic85daf27a040fd61cc7e6fdd067ec945b68c53b8
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This data source captures snapshots of Android aconfig flags. It invokes 'aflags list --format proto' and parses the binary protobuf.
Bug: b/314981157
Test: record_android_trace with android.aflags data source