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Diffstat (limited to 'libs/surfaceflinger/Barrier.h')
-rw-r--r-- | libs/surfaceflinger/Barrier.h | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/libs/surfaceflinger/Barrier.h b/libs/surfaceflinger/Barrier.h deleted file mode 100644 index e2bcf6a..0000000 --- a/libs/surfaceflinger/Barrier.h +++ /dev/null @@ -1,59 +0,0 @@ -/* - * Copyright (C) 2007 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 ANDROID_BARRIER_H -#define ANDROID_BARRIER_H - -#include <stdint.h> -#include <sys/types.h> -#include <utils/threads.h> - -namespace android { - -class Barrier -{ -public: - inline Barrier() : state(CLOSED) { } - inline ~Barrier() { } - void open() { - // gcc memory barrier, this makes sure all memory writes - // have been issued by gcc. On an SMP system we'd need a real - // h/w barrier. - asm volatile ("":::"memory"); - Mutex::Autolock _l(lock); - state = OPENED; - cv.broadcast(); - } - void close() { - Mutex::Autolock _l(lock); - state = CLOSED; - } - void wait() const { - Mutex::Autolock _l(lock); - while (state == CLOSED) { - cv.wait(lock); - } - } -private: - enum { OPENED, CLOSED }; - mutable Mutex lock; - mutable Condition cv; - volatile int state; -}; - -}; // namespace android - -#endif // ANDROID_BARRIER_H |