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/*
* Copyright (C) 2008 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 "sun_misc_Unsafe.h"
#include "gc/accounting/card_table-inl.h"
#include "jni_internal.h"
#include "mirror/array.h"
#include "mirror/class-inl.h"
#include "mirror/object-inl.h"
#include "scoped_fast_native_object_access.h"
namespace art {
static jboolean Unsafe_compareAndSwapInt(JNIEnv* env, jobject, jobject javaObj, jlong offset,
jint expectedValue, jint newValue) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
// JNI must use non transactional mode.
bool success = obj->CasFieldStrongSequentiallyConsistent32<false>(MemberOffset(offset),
expectedValue, newValue);
return success ? JNI_TRUE : JNI_FALSE;
}
static jboolean Unsafe_compareAndSwapLong(JNIEnv* env, jobject, jobject javaObj, jlong offset,
jlong expectedValue, jlong newValue) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
// JNI must use non transactional mode.
bool success = obj->CasFieldStrongSequentiallyConsistent64<false>(MemberOffset(offset),
expectedValue, newValue);
return success ? JNI_TRUE : JNI_FALSE;
}
static jboolean Unsafe_compareAndSwapObject(JNIEnv* env, jobject, jobject javaObj, jlong offset,
jobject javaExpectedValue, jobject javaNewValue) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
mirror::Object* expectedValue = soa.Decode<mirror::Object*>(javaExpectedValue);
mirror::Object* newValue = soa.Decode<mirror::Object*>(javaNewValue);
// JNI must use non transactional mode.
bool success = obj->CasFieldStrongSequentiallyConsistentObject<false>(MemberOffset(offset),
expectedValue, newValue);
return success ? JNI_TRUE : JNI_FALSE;
}
static jint Unsafe_getInt(JNIEnv* env, jobject, jobject javaObj, jlong offset) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
return obj->GetField32(MemberOffset(offset));
}
static jint Unsafe_getIntVolatile(JNIEnv* env, jobject, jobject javaObj, jlong offset) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
return obj->GetField32Volatile(MemberOffset(offset));
}
static void Unsafe_putInt(JNIEnv* env, jobject, jobject javaObj, jlong offset, jint newValue) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
// JNI must use non transactional mode.
obj->SetField32<false>(MemberOffset(offset), newValue);
}
static void Unsafe_putIntVolatile(JNIEnv* env, jobject, jobject javaObj, jlong offset,
jint newValue) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
// JNI must use non transactional mode.
obj->SetField32Volatile<false>(MemberOffset(offset), newValue);
}
static void Unsafe_putOrderedInt(JNIEnv* env, jobject, jobject javaObj, jlong offset,
jint newValue) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
QuasiAtomic::ThreadFenceRelease();
// JNI must use non transactional mode.
obj->SetField32<false>(MemberOffset(offset), newValue);
}
static jlong Unsafe_getLong(JNIEnv* env, jobject, jobject javaObj, jlong offset) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
return obj->GetField64(MemberOffset(offset));
}
static jlong Unsafe_getLongVolatile(JNIEnv* env, jobject, jobject javaObj, jlong offset) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
return obj->GetField64Volatile(MemberOffset(offset));
}
static void Unsafe_putLong(JNIEnv* env, jobject, jobject javaObj, jlong offset, jlong newValue) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
// JNI must use non transactional mode.
obj->SetField64<false>(MemberOffset(offset), newValue);
}
static void Unsafe_putLongVolatile(JNIEnv* env, jobject, jobject javaObj, jlong offset,
jlong newValue) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
// JNI must use non transactional mode.
obj->SetField64Volatile<false>(MemberOffset(offset), newValue);
}
static void Unsafe_putOrderedLong(JNIEnv* env, jobject, jobject javaObj, jlong offset,
jlong newValue) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
QuasiAtomic::ThreadFenceRelease();
// JNI must use non transactional mode.
obj->SetField64<false>(MemberOffset(offset), newValue);
}
static jobject Unsafe_getObjectVolatile(JNIEnv* env, jobject, jobject javaObj, jlong offset) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
mirror::Object* value = obj->GetFieldObjectVolatile<mirror::Object>(MemberOffset(offset));
return soa.AddLocalReference<jobject>(value);
}
static jobject Unsafe_getObject(JNIEnv* env, jobject, jobject javaObj, jlong offset) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
mirror::Object* value = obj->GetFieldObject<mirror::Object>(MemberOffset(offset));
return soa.AddLocalReference<jobject>(value);
}
static void Unsafe_putObject(JNIEnv* env, jobject, jobject javaObj, jlong offset,
jobject javaNewValue) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
mirror::Object* newValue = soa.Decode<mirror::Object*>(javaNewValue);
// JNI must use non transactional mode.
obj->SetFieldObject<false>(MemberOffset(offset), newValue);
}
static void Unsafe_putObjectVolatile(JNIEnv* env, jobject, jobject javaObj, jlong offset,
jobject javaNewValue) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
mirror::Object* newValue = soa.Decode<mirror::Object*>(javaNewValue);
// JNI must use non transactional mode.
obj->SetFieldObjectVolatile<false>(MemberOffset(offset), newValue);
}
static void Unsafe_putOrderedObject(JNIEnv* env, jobject, jobject javaObj, jlong offset,
jobject javaNewValue) {
ScopedFastNativeObjectAccess soa(env);
mirror::Object* obj = soa.Decode<mirror::Object*>(javaObj);
mirror::Object* newValue = soa.Decode<mirror::Object*>(javaNewValue);
QuasiAtomic::ThreadFenceRelease();
// JNI must use non transactional mode.
obj->SetFieldObject<false>(MemberOffset(offset), newValue);
}
static jint Unsafe_getArrayBaseOffsetForComponentType(JNIEnv* env, jclass, jobject component_class) {
ScopedFastNativeObjectAccess soa(env);
mirror::Class* component = soa.Decode<mirror::Class*>(component_class);
Primitive::Type primitive_type = component->GetPrimitiveType();
return mirror::Array::DataOffset(Primitive::ComponentSize(primitive_type)).Int32Value();
}
static jint Unsafe_getArrayIndexScaleForComponentType(JNIEnv* env, jclass, jobject component_class) {
ScopedFastNativeObjectAccess soa(env);
mirror::Class* component = soa.Decode<mirror::Class*>(component_class);
Primitive::Type primitive_type = component->GetPrimitiveType();
return Primitive::ComponentSize(primitive_type);
}
static JNINativeMethod gMethods[] = {
NATIVE_METHOD(Unsafe, compareAndSwapInt, "!(Ljava/lang/Object;JII)Z"),
NATIVE_METHOD(Unsafe, compareAndSwapLong, "!(Ljava/lang/Object;JJJ)Z"),
NATIVE_METHOD(Unsafe, compareAndSwapObject, "!(Ljava/lang/Object;JLjava/lang/Object;Ljava/lang/Object;)Z"),
NATIVE_METHOD(Unsafe, getIntVolatile, "!(Ljava/lang/Object;J)I"),
NATIVE_METHOD(Unsafe, putIntVolatile, "!(Ljava/lang/Object;JI)V"),
NATIVE_METHOD(Unsafe, getLongVolatile, "!(Ljava/lang/Object;J)J"),
NATIVE_METHOD(Unsafe, putLongVolatile, "!(Ljava/lang/Object;JJ)V"),
NATIVE_METHOD(Unsafe, getObjectVolatile, "!(Ljava/lang/Object;J)Ljava/lang/Object;"),
NATIVE_METHOD(Unsafe, putObjectVolatile, "!(Ljava/lang/Object;JLjava/lang/Object;)V"),
NATIVE_METHOD(Unsafe, getInt, "!(Ljava/lang/Object;J)I"),
NATIVE_METHOD(Unsafe, putInt, "!(Ljava/lang/Object;JI)V"),
NATIVE_METHOD(Unsafe, putOrderedInt, "!(Ljava/lang/Object;JI)V"),
NATIVE_METHOD(Unsafe, getLong, "!(Ljava/lang/Object;J)J"),
NATIVE_METHOD(Unsafe, putLong, "!(Ljava/lang/Object;JJ)V"),
NATIVE_METHOD(Unsafe, putOrderedLong, "!(Ljava/lang/Object;JJ)V"),
NATIVE_METHOD(Unsafe, getObject, "!(Ljava/lang/Object;J)Ljava/lang/Object;"),
NATIVE_METHOD(Unsafe, putObject, "!(Ljava/lang/Object;JLjava/lang/Object;)V"),
NATIVE_METHOD(Unsafe, putOrderedObject, "!(Ljava/lang/Object;JLjava/lang/Object;)V"),
NATIVE_METHOD(Unsafe, getArrayBaseOffsetForComponentType, "!(Ljava/lang/Class;)I"),
NATIVE_METHOD(Unsafe, getArrayIndexScaleForComponentType, "!(Ljava/lang/Class;)I"),
};
void register_sun_misc_Unsafe(JNIEnv* env) {
REGISTER_NATIVE_METHODS("sun/misc/Unsafe");
}
} // namespace art
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