1 /*
2 * Copyright 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 "jit/jit.h"
20 #include "jit/jit_code_cache.h"
21 #include "mirror/class.h"
22 #include "mirror/string.h"
23 #include "runtime.h"
24 #include "scoped_thread_state_change-inl.h"
25
26 namespace art {
27
28 // Calls through to a static method with signature "()V".
29 extern "C" JNIEXPORT
Java_Main_callThrough(JNIEnv * env,jclass,jclass klass,jstring methodName)30 void Java_Main_callThrough(JNIEnv* env, jclass, jclass klass, jstring methodName) {
31 ScopedObjectAccess soa(Thread::Current());
32 std::string name = soa.Decode<mirror::String>(methodName)->ToModifiedUtf8();
33 jmethodID method = env->GetStaticMethodID(klass, name.c_str(), "()V");
34 CHECK(method != nullptr) << soa.Decode<mirror::Class>(klass)->PrettyDescriptor() << "." << name;
35 env->CallStaticVoidMethod(klass, method);
36 }
37
38 extern "C" JNIEXPORT
Java_Main_jitGc(JNIEnv *,jclass)39 void Java_Main_jitGc(JNIEnv*, jclass) {
40 CHECK(Runtime::Current()->GetJit() != nullptr);
41 jit::JitCodeCache* cache = Runtime::Current()->GetJit()->GetCodeCache();
42 Thread* self = Thread::Current();
43 {
44 ScopedObjectAccess soa(self);
45 cache->InvalidateAllCompiledCode();
46 }
47 cache->DoCollection(self);
48 // Run a second time in case the first run was a no-op due to a concurrent JIT
49 // GC from the JIT thread.
50 cache->DoCollection(self);
51 }
52
53 extern "C" JNIEXPORT
Java_Main_isNextJitGcFull(JNIEnv *,jclass)54 jboolean Java_Main_isNextJitGcFull(JNIEnv*, jclass) {
55 // Because we invalidate all compiled code above, we currently always do a
56 // full GC.
57 return true;
58 }
59
60 } // namespace art
61