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atomic
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Filename :
gcc_builtins.h
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#ifndef ATOMIC_GCC_BUILTINS_INCLUDED #define ATOMIC_GCC_BUILTINS_INCLUDED /* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #define make_atomic_add_body(S) \ v= __sync_fetch_and_add(a, v); #define make_atomic_fas_body(S) \ v= __sync_lock_test_and_set(a, v); #define make_atomic_cas_body(S) \ int ## S sav; \ int ## S cmp_val= *cmp; \ sav= __sync_val_compare_and_swap(a, cmp_val, set);\ if (!(ret= (sav == cmp_val))) *cmp= sav #ifdef MY_ATOMIC_MODE_DUMMY #define make_atomic_load_body(S) ret= *a #define make_atomic_store_body(S) *a= v #define MY_ATOMIC_MODE "gcc-builtins-up" #elif defined(HAVE_GCC_C11_ATOMICS) #define MY_ATOMIC_MODE "gcc-atomics-smp" #define make_atomic_load_body(S) \ ret= __atomic_load_n(a, __ATOMIC_SEQ_CST) #define make_atomic_store_body(S) \ __atomic_store_n(a, v, __ATOMIC_SEQ_CST) #else #define MY_ATOMIC_MODE "gcc-builtins-smp" #define make_atomic_load_body(S) \ ret= __sync_fetch_and_or(a, 0); #define make_atomic_store_body(S) \ (void) __sync_lock_test_and_set(a, v); #endif #endif /* ATOMIC_GCC_BUILTINS_INCLUDED */