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/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
Java_JitCacheChurnTest_removeJitCompiledMethod(JNIEnv * env,jclass,jobject javaMethod,jboolean releaseMemory)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