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/*
* Copyright (C) 2016 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>
#define NELEM(x) ((int) (sizeof(x) / sizeof((x)[0])))
static void jintarrayArgumentNoop(JNIEnv*, jclass, jintArray, jint) {
}
static jint jintarrayGetLength(JNIEnv* env, jclass, jintArray jarray) {
const jsize len = env->GetArrayLength(jarray);
return static_cast<jint>(len);
}
static jint jintarrayCriticalAccess(JNIEnv* env, jclass, jintArray jarray, jint index) {
const jsize len = env->GetArrayLength(jarray);
if (index < 0 || index >= len) {
return -1;
}
jint* data = (jint*) env->GetPrimitiveArrayCritical(jarray, 0);
jint ret = data[index];
env->ReleasePrimitiveArrayCritical(jarray, data, 0);
return ret;
}
static jint jintarrayBasicAccess(JNIEnv* env, jclass, jintArray jarray, jint index) {
const jsize len = env->GetArrayLength(jarray);
if (index < 0 || index >= len) {
return -1;
}
jint* data = env->GetIntArrayElements(jarray, 0);
jint ret = data[index];
env->ReleaseIntArrayElements(jarray, data, 0);
return ret;
}
static const JNINativeMethod sMethods[] = {
{"jintarrayArgumentNoop", "([II)V", (void *) jintarrayArgumentNoop},
{"jintarrayGetLength", "([I)I", (void *) jintarrayGetLength},
{"jintarrayCriticalAccess", "([II)I", (void *) jintarrayCriticalAccess},
{"jintarrayBasicAccess", "([II)I", (void *) jintarrayBasicAccess},
};
static int registerNativeMethods(JNIEnv* env, const char* className,
const JNINativeMethod* gMethods, int numMethods) {
jclass clazz = env->FindClass(className);
if (clazz == NULL) {
return JNI_FALSE;
}
if (env->RegisterNatives(clazz, gMethods, numMethods) < 0) {
return JNI_FALSE;
}
return JNI_TRUE;
}
jint JNI_OnLoad(JavaVM* jvm, void*) {
JNIEnv *env = NULL;
if (jvm->GetEnv((void**) &env, JNI_VERSION_1_6)) {
return JNI_ERR;
}
if (registerNativeMethods(env, "android/perftests/SystemPerfTest",
sMethods, NELEM(sMethods)) == -1) {
return JNI_ERR;
}
return JNI_VERSION_1_6;
}
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