Improve the generational mode.
- Turn the compile-time flags for generational mode into a command
line flag.
- In the generational mode, always collect the whole heap, as opposed
to the bump pointer space only, if a collection is an explicit,
native allocation-triggered or last attempt one.
Change-Id: I7a14a707cc47e6e3aa4a3292db62533409f17563
diff --git a/runtime/gc/gc_cause.h b/runtime/gc/gc_cause.h
new file mode 100644
index 0000000..7499b9e
--- /dev/null
+++ b/runtime/gc/gc_cause.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_GC_GC_CAUSE_H_
+#define ART_RUNTIME_GC_GC_CAUSE_H_
+
+#include <ostream>
+
+namespace art {
+namespace gc {
+
+// What caused the GC?
+enum GcCause {
+ // GC triggered by a failed allocation. Thread doing allocation is blocked waiting for GC before
+ // retrying allocation.
+ kGcCauseForAlloc,
+ // A background GC trying to ensure there is free memory ahead of allocations.
+ kGcCauseBackground,
+ // An explicit System.gc() call.
+ kGcCauseExplicit,
+ // GC triggered for a native allocation.
+ kGcCauseForNativeAlloc,
+ // GC triggered for a collector transition.
+ kGcCauseCollectorTransition,
+};
+
+const char* PrettyCause(GcCause cause);
+std::ostream& operator<<(std::ostream& os, const GcCause& gc_cause);
+
+} // namespace gc
+} // namespace art
+
+#endif // ART_RUNTIME_GC_GC_CAUSE_H_