X-Git-Url: http://demsky.eecs.uci.edu/git/?p=model-checker-benchmarks.git;a=blobdiff_plain;f=queue%2Fatomic_ops.h;fp=queue%2Fatomic_ops.h;h=0000000000000000000000000000000000000000;hp=30e9fe313cdcd1c2558bc6f99f7b702eb3a480bc;hb=819715e1278ec7efecc81cf1d62c298eb396c730;hpb=69d1985b2a13f7f53fd717c094641a795b9c0410

diff --git a/queue/atomic_ops.h b/queue/atomic_ops.h
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-// ============================================================================
-// Copyright (c) 2010 Faustino Frechilla
-// All rights reserved.
-// 
-// Redistribution and use in source and binary forms, with or without 
-// modification, are permitted provided that the following conditions are met:
-//
-//  1. Redistributions of source code must retain the above copyright notice,
-//     this list of conditions and the following disclaimer.
-//  2. Redistributions in binary form must reproduce the above copyright 
-//     notice, this list of conditions and the following disclaimer in the
-//     documentation and/or other materials provided with the distribution.
-//  3. The name of the author may not be used to endorse or promote products
-//     derived from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
-// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
-// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
-// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
-// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
-// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
-// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
-// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
-// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
-// POSSIBILITY OF SUCH DAMAGE.
-//
-/// @file atomic_ops.h
-/// @brief This file contains functions to wrap the built-in atomic operations 
-///        defined for your compiler
-///
-/// @author Faustino Frechilla
-/// @history
-/// Ref  Who                 When         What
-///      Faustino Frechilla  11-Jul-2010  Original development. GCC support
-/// @endhistory
-/// 
-// ============================================================================
-
-#ifndef __ATOMIC_OPS_H
-#define __ATOMIC_OPS_H
-
-#ifdef __GNUC__
-// Atomic functions in GCC are present from version 4.1.0 on
-// http://gcc.gnu.org/onlinedocs/gcc-4.1.0/gcc/Atomic-Builtins.html
-
-// Test for GCC >= 4.1.0
-#if (__GNUC__ < 4) || \
-    ((__GNUC__ == 4) && ((__GNUC_MINOR__ < 1) || \
-                        ((__GNUC_MINOR__     == 1) && \
-                         (__GNUC_PATCHLEVEL__ < 0))) )
-                        
-#error Atomic built-in functions are only available in GCC in versions >= 4.1.0
-#endif // end of check for GCC 4.1.0
-
-/// @brief atomically adds a_count to the variable pointed by a_ptr
-/// @return the value that had previously been in memory
-#define AtomicAdd(a_ptr,a_count) __sync_fetch_and_add (a_ptr, a_count)
-
-/// @brief atomically substracts a_count from the variable pointed by a_ptr
-/// @return the value that had previously been in memory
-#define AtomicSub(a_ptr,a_count) __sync_fetch_and_sub (a_ptr, a_count)
-
-/// @brief Compare And Swap
-///        If the current value of *a_ptr is a_oldVal, then write a_newVal into *a_ptr
-/// @return true if the comparison is successful and a_newVal was written
-#define CAS(a_ptr, a_oldVal, a_newVal) __sync_bool_compare_and_swap(a_ptr, a_oldVal, a_newVal)
-
-/// @brief Compare And Swap
-///        If the current value of *a_ptr is a_oldVal, then write a_newVal into *a_ptr
-/// @return the contents of *a_ptr before the operation
-#define CASVal(a_ptr, a_oldVal, a_newVal) __sync_val_compare_and_swap(a_ptr, a_oldVal, a_newVal)
-
-#else
-#error Atomic functions such as CAS or AtomicAdd are not defined for your compiler. Please add them in atomic_ops.h
-#endif // __GNUC__
-
-
-#endif // __ATOMIC_OPS_H