1 /* 2 * Copyright (C) 2017 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 19 #include "art_method.h" 20 #include "jit/jit.h" 21 #include "jit/jit_code_cache.h" 22 #include "jni_internal.h" 23 #include "mirror/class.h" 24 #include "runtime.h" 25 #include "scoped_thread_state_change-inl.h" 26 #include "thread_list.h" 27 28 namespace art { 29 30 extern "C" JNIEXPORT 31 jboolean 32 Java_JitCacheChurnTest_removeJitCompiledMethod(JNIEnv* env, 33 jclass, 34 jobject javaMethod, 35 jboolean releaseMemory) { 36 if (!Runtime::Current()->UseJitCompilation()) { 37 return JNI_FALSE; 38 } 39 40 jit::Jit* jit = Runtime::Current()->GetJit(); 41 jit->WaitForCompilationToFinish(Thread::Current()); 42 43 ScopedObjectAccess soa(env); 44 ArtMethod* method = ArtMethod::FromReflectedMethod(soa, javaMethod); 45 46 jit::JitCodeCache* code_cache = jit->GetCodeCache(); 47 48 // Drop the shared mutator lock 49 ScopedThreadSuspension selfSuspension(Thread::Current(), art::ThreadState::kNative); 50 // Get exclusive mutator lock with suspend all. 51 ScopedSuspendAll suspend("Removing JIT compiled method", /*long_suspend*/true); 52 bool removed = code_cache->RemoveMethod(method, static_cast<bool>(releaseMemory)); 53 return removed ? JNI_TRUE : JNI_FALSE; 54 } 55 56 } // namespace art 57
