perfetto_hprof: add flag to enable.
Add flag whether to allow loading of the perfetto hprof plugin.
Even with this option set, we will still only actually load the plugin
if we are on a userdebug build or the app is debuggable or profileable.
We do not want to enable this by default because PerfettoHprof does not
work on host, and we do not want to enable it in tests.
Test: flash flame-userdebug. get java heap dump.
Bug: 147667830
Change-Id: If978556dbf44b27828cba47e1fb95084a12838b7
diff --git a/runtime/runtime_options.def b/runtime/runtime_options.def
index 877a5a0..5707a33 100644
--- a/runtime/runtime_options.def
+++ b/runtime/runtime_options.def
@@ -173,4 +173,17 @@
RUNTIME_OPTIONS_KEY (bool, FastClassNotFoundException, true)
RUNTIME_OPTIONS_KEY (bool, VerifierMissingKThrowFatal, true)
+// Whether to allow loading of the perfetto hprof plugin.
+// Even with this option set, we will still only actually load the plugin
+// if we are on a userdebug build or the app is debuggable or profileable.
+//
+// We do not want to enable this by default because PerfettoHprof does not
+// work on host, and we do not want to enable it in tests.
+//
+// Switching this on adds ~500us to the startup on userdebug builds, or for
+// profileable / debuggable apps.
+//
+// This is set to true in frameworks/base/core/jni/AndroidRuntime.cpp.
+RUNTIME_OPTIONS_KEY (bool, PerfettoHprof, false)
+
#undef RUNTIME_OPTIONS_KEY