diff options
Diffstat (limited to '3rdparty/plibsys/src/patomic-sync.c')
| -rw-r--r-- | 3rdparty/plibsys/src/patomic-sync.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/3rdparty/plibsys/src/patomic-sync.c b/3rdparty/plibsys/src/patomic-sync.c new file mode 100644 index 0000000..04a8d81 --- /dev/null +++ b/3rdparty/plibsys/src/patomic-sync.c @@ -0,0 +1,190 @@ +/* + * The MIT License + * + * Copyright (C) 2010-2017 Alexander Saprykin <saprykin.spb@gmail.com> + * + * 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 <intrinsics.h> +#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) +{ +} |