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/******************************************************************************
*
* Copyright 2021 Google, Inc.
*
* 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 "BtGdWakelockNative"
#include "os/internal/wakelock_native.h"
#include <aidl/android/system/suspend/ISystemSuspend.h>
#include <aidl/android/system/suspend/IWakeLock.h>
#include <android/binder_ibinder.h>
#include <android/binder_manager.h>
#include <fcntl.h>
#include <unistd.h>
#include <cerrno>
#include <string>
// We want the os/log.h definitions
#undef LOG_DEBUG
#undef LOG_INFO
#include "os/log.h"
// Save the os/log.h definitions
#pragma push_macro("LOG_DEBUG")
#pragma push_macro("LOG_INFO")
// Undef these to avoid conflicting with later imports
#undef LOG_DEBUG
#undef LOG_INFO
using ::aidl::android::system::suspend::ISystemSuspend;
using ::aidl::android::system::suspend::IWakeLock;
using ::aidl::android::system::suspend::WakeLockType;
namespace bluetooth {
namespace os {
namespace internal {
// Restore the os/log.h definitions after all imported headers
#pragma pop_macro("LOG_DEBUG")
#pragma pop_macro("LOG_INFO")
static void onSuspendDeath(void* cookie) {
auto onDeath = static_cast<std::function<void(void)>*>(cookie);
(*onDeath)();
}
struct WakelockNative::Impl {
Impl() : suspend_death_recipient(AIBinder_DeathRecipient_new(onSuspendDeath)) {}
std::function<void(void)> onDeath = [this] {
LOG_ERROR("ISystemSuspend HAL service died!");
this->suspend_service = nullptr;
};
std::shared_ptr<ISystemSuspend> suspend_service = nullptr;
std::shared_ptr<IWakeLock> current_wakelock = nullptr;
::ndk::ScopedAIBinder_DeathRecipient suspend_death_recipient;
};
void WakelockNative::Initialize() {
LOG_INFO("Initializing native wake locks");
const std::string suspendInstance = std::string() + ISystemSuspend::descriptor + "/default";
pimpl_->suspend_service = ISystemSuspend::fromBinder(
ndk::SpAIBinder(AServiceManager_waitForService(suspendInstance.c_str())));
ASSERT_LOG(pimpl_->suspend_service, "Cannot get ISystemSuspend service");
AIBinder_linkToDeath(
pimpl_->suspend_service->asBinder().get(),
pimpl_->suspend_death_recipient.get(),
static_cast<void*>(&pimpl_->onDeath));
}
WakelockNative::StatusCode WakelockNative::Acquire(const std::string& lock_name) {
if (!pimpl_->suspend_service) {
LOG_ERROR("lock not acquired, ISystemService is not available");
return StatusCode::NATIVE_SERVICE_NOT_AVAILABLE;
}
if (pimpl_->current_wakelock) {
LOG_INFO("wakelock is already acquired");
return StatusCode::SUCCESS;
}
auto status = pimpl_->suspend_service->acquireWakeLock(
WakeLockType::PARTIAL, lock_name, &pimpl_->current_wakelock);
if (!pimpl_->current_wakelock) {
LOG_ERROR("wake lock not acquired: %s", status.getDescription().c_str());
return StatusCode::NATIVE_API_ERROR;
}
return StatusCode::SUCCESS;
}
WakelockNative::StatusCode WakelockNative::Release(const std::string& lock_name) {
if (!pimpl_->current_wakelock) {
LOG_WARN("no lock is currently acquired");
return StatusCode::SUCCESS;
}
pimpl_->current_wakelock->release();
pimpl_->current_wakelock = nullptr;
return StatusCode::SUCCESS;
}
void WakelockNative::CleanUp() {
LOG_INFO("Cleaning up native wake locks");
if (pimpl_->current_wakelock) {
LOG_INFO("releasing current wakelock during clean up");
pimpl_->current_wakelock->release();
pimpl_->current_wakelock = nullptr;
}
if (pimpl_->suspend_service) {
LOG_INFO("Unlink death recipient");
AIBinder_unlinkToDeath(
pimpl_->suspend_service->asBinder().get(),
pimpl_->suspend_death_recipient.get(),
static_cast<void*>(&pimpl_->onDeath));
pimpl_->suspend_service = nullptr;
}
}
WakelockNative::WakelockNative() : pimpl_(std::make_unique<Impl>()) {}
WakelockNative::~WakelockNative() = default;
} // namespace internal
} // namespace os
} // namespace bluetooth
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