upgrade to Filament 1.21.0

ios/include/utils/CyclicBarrier.h

@@ -1,84 +0,0 @@
-/*
- * Copyright (C) 2015 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 TNT_UTILS_CYCLIC_BARRIER_H
-#define TNT_UTILS_CYCLIC_BARRIER_H
-
-#include <stddef.h>
-
-// note: we use our version of mutex/condition to keep this public header STL free
-#include <utils/Condition.h>
-#include <utils/Mutex.h>
-
-namespace utils {
-
-/**
- * A cyclic barrier is used to synchronize several threads to a particular execution point.
- *
- * Threads entering the barrier are halted until all threads reach the barrier.
- *
- * @see CountDownLatch
- */
-class CyclicBarrier {
-public:
-    /**
-     * Creates a cyclic barrier with a specified number of threads to synchronize. The minimum
-     * useful value is 2. A value of 0 is invalid and is silently changed to 1.
-     * @param num_threads Number of threads to synchronize.
-     */
-    explicit CyclicBarrier(size_t num_threads) noexcept;
-
-    /**
-     * @return The number of thread that are synchronized.
-     */
-    size_t getThreadCount() const noexcept;
-
-    /**
-     * @return Number of threads currently waiting on the barrier.
-     */
-    size_t getWaitingThreadCount() const noexcept;
-
-    /**
-     * Blocks until getThreadCount()-1 other threads reach await().
-     */
-    void await() noexcept;
-
-    /**
-     * Resets the cyclic barrier to its original state and releases all waiting threads.
-     */
-    void reset() noexcept;
-
-    CyclicBarrier() = delete;
-    CyclicBarrier(const CyclicBarrier&) = delete;
-    CyclicBarrier& operator=(const CyclicBarrier&) = delete;
-
-private:
-    enum class State {
-        TRAP, RELEASE
-    };
-
-    const size_t m_num_threads;
-    mutable Mutex m_lock;
-    mutable Condition m_cv;
-
-    State m_state = State::TRAP;
-    size_t m_trapped_threads = 0;
-    size_t m_released_threads = 0;
-};
-
-} // namespace utils
-
-#endif // TNT_UTILS_CYCLIC_BARRIER_H