1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "jni.h" 18 #include "mirror/class-inl.h" 19 #include "runtime.h" 20 #include "thread_list.h" 21 #include "thread_state.h" 22 #include "gc/gc_cause.h" 23 #include "gc/scoped_gc_critical_section.h" 24 25 namespace art { 26 27 extern "C" JNIEXPORT void JNICALL Java_Main_deoptimizeAll( 28 JNIEnv* env, 29 jclass cls ATTRIBUTE_UNUSED) { 30 ScopedObjectAccess soa(env); 31 ScopedThreadSuspension sts(Thread::Current(), kWaitingForDeoptimization); 32 gc::ScopedGCCriticalSection gcs(Thread::Current(), 33 gc::kGcCauseInstrumentation, 34 gc::kCollectorTypeInstrumentation); 35 // We need to suspend mutator threads first. 36 ScopedSuspendAll ssa(__FUNCTION__); 37 static bool first = true; 38 if (first) { 39 // We need to enable deoptimization once in order to call DeoptimizeEverything(). 40 Runtime::Current()->GetInstrumentation()->EnableDeoptimization(); 41 first = false; 42 } 43 Runtime::Current()->GetInstrumentation()->DeoptimizeEverything("test"); 44 } 45 46 extern "C" JNIEXPORT void JNICALL Java_Main_undeoptimizeAll( 47 JNIEnv* env, 48 jclass cls ATTRIBUTE_UNUSED) { 49 ScopedObjectAccess soa(env); 50 ScopedThreadSuspension sts(Thread::Current(), kWaitingForDeoptimization); 51 gc::ScopedGCCriticalSection gcs(Thread::Current(), 52 gc::kGcCauseInstrumentation, 53 gc::kCollectorTypeInstrumentation); 54 // We need to suspend mutator threads first. 55 ScopedSuspendAll ssa(__FUNCTION__); 56 Runtime::Current()->GetInstrumentation()->UndeoptimizeEverything("test"); 57 } 58 59 } // namespace art 60
