sm6375-common: Import Pixel libperfmgr AIDL Power HAL

Change-Id: Ibec82206ac2b070bdcb88213d98f6cc35109ea4f

power-libperfmgr/InteractionHandler.h

@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#ifndef POWER_LIBPERFMGR_INTERACTIONHANDLER_H_
+#define POWER_LIBPERFMGR_INTERACTIONHANDLER_H_
+
+#include <condition_variable>
+#include <memory>
+#include <mutex>
+#include <string>
+#include <thread>
+
+#include <perfmgr/HintManager.h>
+
+using ::android::perfmgr::HintManager;
+
+enum interaction_state {
+    INTERACTION_STATE_UNINITIALIZED,
+    INTERACTION_STATE_IDLE,
+    INTERACTION_STATE_INTERACTION,
+    INTERACTION_STATE_WAITING,
+};
+
+class InteractionHandler {
+  public:
+    InteractionHandler(std::shared_ptr<HintManager> const &hint_manager);
+    ~InteractionHandler();
+    bool Init();
+    void Exit();
+    void Acquire(int32_t duration);
+
+  private:
+    void Release();
+    void WaitForIdle(int32_t wait_ms, int32_t timeout_ms);
+    void AbortWaitLocked();
+    void Routine();
+
+    void PerfLock();
+    void PerfRel();
+
+    size_t CalcTimespecDiffMs(struct timespec start, struct timespec end);
+
+    enum interaction_state mState;
+
+    int mIdleFd;
+    int mEventFd;
+
+    int32_t mWaitMs;
+    int32_t mMinDurationMs;
+    int32_t mMaxDurationMs;
+    int32_t mDurationMs;
+
+    struct timespec mLastTimespec;
+
+    std::unique_ptr<std::thread> mThread;
+    std::mutex mLock;
+    std::condition_variable mCond;
+    std::shared_ptr<HintManager> mHintManager;
+};
+
+#endif  // POWER_LIBPERFMGR_INTERACTIONHANDLER_H_