/* * The MIT License * * Copyright (C) 2010-2017 Alexander Saprykin * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * 'Software'), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "patomic.h" #ifdef P_CC_CRAY # include #endif P_LIB_API pint p_atomic_int_get (const volatile pint *atomic) { #ifdef P_CC_CRAY __builtin_ia32_mfence (); #else __sync_synchronize (); #endif return *atomic; } P_LIB_API void p_atomic_int_set (volatile pint *atomic, pint val) { *atomic = val; #ifdef P_CC_CRAY __builtin_ia32_mfence (); #else __sync_synchronize (); #endif } P_LIB_API void p_atomic_int_inc (volatile pint *atomic) { (void) __sync_fetch_and_add (atomic, 1); } P_LIB_API pboolean p_atomic_int_dec_and_test (volatile pint *atomic) { return __sync_fetch_and_sub (atomic, 1) == 1 ? TRUE : FALSE; } P_LIB_API pboolean p_atomic_int_compare_and_exchange (volatile pint *atomic, pint oldval, pint newval) { #ifdef P_CC_CRAY return __sync_val_compare_and_swap (atomic, oldval, newval) == oldval ? TRUE : FALSE; #else return (pboolean) __sync_bool_compare_and_swap (atomic, oldval, newval); #endif } P_LIB_API pint p_atomic_int_add (volatile pint *atomic, pint val) { return (pint) __sync_fetch_and_add (atomic, val); } P_LIB_API puint p_atomic_int_and (volatile puint *atomic, puint val) { return (puint) __sync_fetch_and_and (atomic, val); } P_LIB_API puint p_atomic_int_or (volatile puint *atomic, puint val) { return (puint) __sync_fetch_and_or (atomic, val); } P_LIB_API puint p_atomic_int_xor (volatile puint *atomic, puint val) { return (puint) __sync_fetch_and_xor (atomic, val); } P_LIB_API ppointer p_atomic_pointer_get (const volatile void *atomic) { #ifdef P_CC_CRAY __builtin_ia32_mfence (); #else __sync_synchronize (); #endif return (ppointer) *((const volatile psize *) atomic); } P_LIB_API void p_atomic_pointer_set (volatile void *atomic, ppointer val) { volatile psize *cur_val = (volatile psize *) atomic; *cur_val = (psize) val; #ifdef P_CC_CRAY __builtin_ia32_mfence (); #else __sync_synchronize (); #endif } P_LIB_API pboolean p_atomic_pointer_compare_and_exchange (volatile void *atomic, ppointer oldval, ppointer newval) { #ifdef P_CC_CRAY return __sync_val_compare_and_swap ((volatile psize *) atomic, (psize) oldval, (psize) newval) == ((psize) oldval) ? TRUE : FALSE; #else return (pboolean) __sync_bool_compare_and_swap ((volatile psize *) atomic, (psize) oldval, (psize) newval); #endif } P_LIB_API pssize p_atomic_pointer_add (volatile void *atomic, pssize val) { return (pssize) __sync_fetch_and_add ((volatile pssize *) atomic, val); } P_LIB_API psize p_atomic_pointer_and (volatile void *atomic, psize val) { return (psize) __sync_fetch_and_and ((volatile psize *) atomic, val); } P_LIB_API psize p_atomic_pointer_or (volatile void *atomic, psize val) { return (psize) __sync_fetch_and_or ((volatile psize *) atomic, val); } P_LIB_API psize p_atomic_pointer_xor (volatile void *atomic, psize val) { return (psize) __sync_fetch_and_xor ((volatile psize *) atomic, val); } P_LIB_API pboolean p_atomic_is_lock_free (void) { return TRUE; } void p_atomic_thread_init (void) { } void p_atomic_thread_shutdown (void) { }