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79 lines
2.6 KiB
79 lines
2.6 KiB
/* |
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* Copyright (C) 2018 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#define LOG_TAG "power" |
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#define ATRACE_TAG ATRACE_TAG_POWER |
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#include <android-base/logging.h> |
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#include <android/system/suspend/1.0/ISystemSuspend.h> |
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#include <hardware_legacy/power.h> |
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#include <utils/Trace.h> |
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#include <mutex> |
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#include <string> |
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#include <thread> |
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#include <unordered_map> |
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using android::sp; |
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using android::system::suspend::V1_0::ISystemSuspend; |
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using android::system::suspend::V1_0::IWakeLock; |
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using android::system::suspend::V1_0::WakeLockType; |
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static std::mutex gLock; |
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static std::unordered_map<std::string, sp<IWakeLock>> gWakeLockMap; |
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static const sp<ISystemSuspend>& getSystemSuspendServiceOnce() { |
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static sp<ISystemSuspend> suspendService = ISystemSuspend::getService(); |
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return suspendService; |
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} |
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int acquire_wake_lock(int, const char* id) { |
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ATRACE_CALL(); |
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const auto& suspendService = getSystemSuspendServiceOnce(); |
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if (!suspendService) { |
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return -1; |
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} |
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std::lock_guard<std::mutex> l{gLock}; |
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if (!gWakeLockMap[id]) { |
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auto ret = suspendService->acquireWakeLock(WakeLockType::PARTIAL, id); |
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// It's possible that during device shutdown SystemSuspend service has already exited. In |
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// these situations HIDL calls to it will result in a DEAD_OBJECT transaction error. We |
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// check for DEAD_OBJECT so that libpower clients can shutdown cleanly. |
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if (ret.isDeadObject()) { |
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return -1; |
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} else { |
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gWakeLockMap[id] = ret; |
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} |
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} |
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return 0; |
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} |
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int release_wake_lock(const char* id) { |
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ATRACE_CALL(); |
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std::lock_guard<std::mutex> l{gLock}; |
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if (gWakeLockMap[id]) { |
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// Ignore errors on release() call since hwbinder driver will clean up the underlying object |
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// once we clear the corresponding strong pointer. |
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auto ret = gWakeLockMap[id]->release(); |
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if (!ret.isOk()) { |
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LOG(ERROR) << "IWakeLock::release() call failed: " << ret.description(); |
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} |
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gWakeLockMap[id].clear(); |
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return 0; |
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} |
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return -1; |
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}
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