/*
 * Copyright 2017 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.
 */

#include <jni.h>

#include "jit/jit.h"
#include "jit/jit_code_cache.h"
#include "mirror/class.h"
#include "mirror/string.h"
#include "runtime.h"
#include "scoped_thread_state_change-inl.h"

namespace art {

// Calls through to a static method with signature "()V".
extern "C" JNIEXPORT
void Java_Main_callThrough(JNIEnv* env, jclass, jclass klass, jstring methodName) {
  ScopedObjectAccess soa(Thread::Current());
  std::string name = soa.Decode<mirror::String>(methodName)->ToModifiedUtf8();
  jmethodID method = env->GetStaticMethodID(klass, name.c_str(), "()V");
  CHECK(method != nullptr) << soa.Decode<mirror::Class>(klass)->PrettyDescriptor() << "." << name;
  env->CallStaticVoidMethod(klass, method);
}

extern "C" JNIEXPORT
void Java_Main_jitGc(JNIEnv*, jclass) {
  CHECK(Runtime::Current()->GetJit() != nullptr);
  jit::JitCodeCache* cache = Runtime::Current()->GetJit()->GetCodeCache();
  Thread* self = Thread::Current();
  {
    ScopedObjectAccess soa(self);
    cache->InvalidateAllCompiledCode();
  }
  cache->DoCollection(self);
  // Run a second time in case the first run was a no-op due to a concurrent JIT
  // GC from the JIT thread.
  cache->DoCollection(self);
}

extern "C" JNIEXPORT
jboolean Java_Main_isNextJitGcFull(JNIEnv*, jclass) {
  // Because we invalidate all compiled code above, we currently always do a
  // full GC.
  return true;
}

}  // namespace art