android13/system/hardware/interfaces/suspend/1.0/default/SystemSuspendAidl.cpp

70 lines
2.2 KiB
C++

/*
* Copyright 2021 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 "SystemSuspendAidl.h"
#include <binder/IPCThreadState.h>
namespace aidl {
namespace android {
namespace system {
namespace suspend {
static inline int getCallingPid() {
return ::android::IPCThreadState::self()->getCallingPid();
}
WakeLock::WakeLock(SystemSuspend* systemSuspend, const std::string& name, int pid)
: mReleased(), mSystemSuspend(systemSuspend), mName(name), mPid(pid) {
mSystemSuspend->incSuspendCounter(mName);
}
WakeLock::~WakeLock() {
releaseOnce();
}
ndk::ScopedAStatus WakeLock::release() {
releaseOnce();
return ndk::ScopedAStatus::ok();
}
void WakeLock::releaseOnce() {
std::call_once(mReleased, [this]() {
mSystemSuspend->decSuspendCounter(mName);
mSystemSuspend->updateWakeLockStatOnRelease(mName, mPid);
});
}
SystemSuspendAidl::SystemSuspendAidl(SystemSuspend* systemSuspend)
: mSystemSuspend(systemSuspend) {}
ndk::ScopedAStatus SystemSuspendAidl::acquireWakeLock(WakeLockType /* type */,
const std::string& name,
std::shared_ptr<IWakeLock>* _aidl_return) {
auto pid = getCallingPid();
if (_aidl_return == nullptr) {
return ndk::ScopedAStatus(AStatus_fromExceptionCode(EX_ILLEGAL_ARGUMENT));
}
*_aidl_return = ndk::SharedRefBase::make<WakeLock>(mSystemSuspend, name, pid);
mSystemSuspend->updateWakeLockStatOnAcquire(name, pid);
return ndk::ScopedAStatus::ok();
}
} // namespace suspend
} // namespace system
} // namespace android
} // namespace aidl