Sysprop for the count of active OOME tracing sessions
In order for ART code to call perfetto DataSource::Trace() we need to
wait for all data source instances to have completed their setup. To do
so, we need to know how many of them exist.
This introduces a new sysprop traced.oome_heap_session.count, writeable
by perfetto traced and readable by apps and system_server that can be
used to communicate this.
See go/art-oom-heap-dump for more details
Test: manual, atest HeapprofdJavaCtsTest
Bug: 269246893
Change-Id: Ib8220879a40854f98bc2f550ff2e7ebf3e077756
diff --git a/private/property_contexts b/private/property_contexts
index 593fdb8..0463728 100644
--- a/private/property_contexts
+++ b/private/property_contexts
@@ -221,6 +221,9 @@
# heapprofd properties
heapprofd. u:object_r:heapprofd_prop:s0
+# traced properties
+traced.oome_heap_session.count u:object_r:traced_oome_heap_session_count_prop:s0 exact uint
+
# servicemanager properties
servicemanager.ready u:object_r:servicemanager_prop:s0 exact bool