23bd4651c7
Not that we require it, but since The Qt Company did it for all files they have copyright, even if they haven't touched the file in years (especially not in 2016), I'm doing the same. Change-Id: I7a9e11d7b64a4cc78e24ffff142b4c9d53039846 Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
64 lines
2.9 KiB
C
64 lines
2.9 KiB
C
/****************************************************************************
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**
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** Copyright (C) 2016 Intel Corporation.
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**
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** Permission is hereby granted, free of charge, to any person obtaining a copy
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** of this software and associated documentation files (the "Software"), to deal
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** in the Software without restriction, including without limitation the rights
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** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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** copies of the Software, and to permit persons to whom the Software is
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** furnished to do so, subject to the following conditions:
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**
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** The above copyright notice and this permission notice shall be included in
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** all copies or substantial portions of the Software.
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**
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** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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** OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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** THE SOFTWARE.
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**
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****************************************************************************/
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#ifndef FFD_ATOMIC_GCC_H
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#define FFD_ATOMIC_GCC_H
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/* atomics */
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/* we'll use the GCC 4.7 atomic builtins
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* See http://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html#_005f_005fatomic-Builtins
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* Or in texinfo: C Extensions > __atomic Builtins
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*/
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typedef int ffd_atomic_int;
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#define ffd_atomic_pointer(type) type*
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#define FFD_ATOMIC_INIT(val) (val)
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#define FFD_ATOMIC_RELAXED __ATOMIC_RELAXED
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#define FFD_ATOMIC_ACQUIRE __ATOMIC_ACQUIRE
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#define FFD_ATOMIC_RELEASE __ATOMIC_RELEASE
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// acq_rel & cst not necessary
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#if !defined(__GNUC__) || \
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((__GNUC__ - 0) * 100 + (__GNUC_MINOR__ - 0)) < 407 || \
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(defined(__INTEL_COMPILER) && __INTEL_COMPILER-0 < 1310) || \
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(defined(__clang__) && ((__clang_major__-0) * 100 + (__clang_minor-0)) < 303)
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#define ffd_atomic_load_n(ptr,order) *(ptr)
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#define ffd_atomic_store_n(ptr,val,order) (*(ptr) = (val), (void)0)
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#define ffd_atomic_exchange_n(ptr,val,order) __sync_lock_test_and_set(ptr, val)
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#define ffd_atomic_compare_exchange_n(ptr,expected,desired,weak,order1,order2) \
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__sync_bool_compare_and_swap(ptr, *(expected), desired) ? 1 : \
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(*(expected) = *(ptr), 0)
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#define ffd_atomic_add_fetch(ptr,val,order) __sync_add_and_fetch(ptr, val)
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#else
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#define ffd_atomic_load(ptr,order) __atomic_load_n(ptr, order)
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#define ffd_atomic_store(ptr,val,order) __atomic_store_n(ptr, val, order)
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#define ffd_atomic_exchange(ptr,val,order) __atomic_exchange_n(ptr, val, order)
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#define ffd_atomic_compare_exchange(ptr,expected,desired,order1,order2) \
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__atomic_compare_exchange_n(ptr, expected, desired, 1, order1, order2)
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#define ffd_atomic_add_fetch(ptr,val,order) __atomic_add_fetch(ptr, val, order)
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#endif
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#endif
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