1 #ifndef _DESPINBARRIER_HPP
2 #define _DESPINBARRIER_HPP
3 /*-------------------------------------------------------------------------
4 * drawElements C++ Base Library
5 * -----------------------------
7 * Copyright 2015 The Android Open Source Project
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
23 * \brief Cross-thread barrier.
24 *//*--------------------------------------------------------------------*/
32 /*--------------------------------------------------------------------*//*!
33 * \brief Cross-thread barrier
35 * SpinBarrier provides barrier implementation that uses spin loop for
36 * waiting for other threads. Threads may choose to wait in tight loop
37 * (WAIT_MODE_BUSY) or yield between iterations (WAIT_MODE_YIELD).
38 *//*--------------------------------------------------------------------*/
50 SpinBarrier (deInt32 numThreads);
53 void sync (WaitMode mode);
56 SpinBarrier (const SpinBarrier&);
57 SpinBarrier operator= (const SpinBarrier&);
59 const deInt32 m_numThreads;
60 volatile deInt32 m_numEntered;
61 volatile deInt32 m_numLeaving;
64 void SpinBarrier_selfTest (void);
68 #endif // _DESPINBARRIER_HPP