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/*
* Copyright (C) 2020 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.
*/
#define LOG_TAG "ServiceManager"
//#define LOG_NDEBUG 0
#include <android-base/logging.h>
#include <binder/IInterface.h>
#include <binder/IServiceManager.h>
#include <nativehelper/JNIHelp.h>
#include "android_util_Binder.h"
#include "core_jni_helpers.h"
namespace android {
// Native because we have a client-side wait in waitForService() and we do not
// want an unnecessary second copy of it.
static jobject android_os_ServiceManager_waitForService(
JNIEnv *env,
jclass /* clazzObj */,
jstring serviceNameObj) {
const jchar* serviceName = env->GetStringCritical(serviceNameObj, nullptr);
if (!serviceName) {
jniThrowNullPointerException(env, nullptr);
return nullptr;
}
String16 nameCopy = String16(reinterpret_cast<const char16_t *>(serviceName),
env->GetStringLength(serviceNameObj));
env->ReleaseStringCritical(serviceNameObj, serviceName);
sp<IBinder> service = defaultServiceManager()->waitForService(nameCopy);
if (!service) {
return nullptr;
}
return javaObjectForIBinder(env, service);
}
// ----------------------------------------------------------------------------
static const JNINativeMethod method_table[] = {
/* name, signature, funcPtr */
{
"waitForService",
"(Ljava/lang/String;)Landroid/os/IBinder;",
(void*)android_os_ServiceManager_waitForService
},
};
int register_android_os_ServiceManager(JNIEnv* env) {
return RegisterMethodsOrDie(
env, "android/os/ServiceManager", method_table, NELEM(method_table));
}
}; // namespace android
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