From a4dd0ad63c00f4dee3b86dfd3075d1d61b2b3180 Mon Sep 17 00:00:00 2001 From: sanine Date: Sat, 27 Aug 2022 23:52:56 -0500 Subject: add plibsys --- 3rdparty/plibsys/src/patomic-sim.c | 268 +++++++++++++++++++++++++++++++++++++ 1 file changed, 268 insertions(+) create mode 100644 3rdparty/plibsys/src/patomic-sim.c (limited to '3rdparty/plibsys/src/patomic-sim.c') diff --git a/3rdparty/plibsys/src/patomic-sim.c b/3rdparty/plibsys/src/patomic-sim.c new file mode 100644 index 0000000..12d0604 --- /dev/null +++ b/3rdparty/plibsys/src/patomic-sim.c @@ -0,0 +1,268 @@ +/* + * The MIT License + * + * Copyright (C) 2010-2016 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" +#include "pmutex.h" + +/* We have to use the slow, but safe locking method. */ +static PMutex *pp_atomic_mutex = NULL; + +P_LIB_API pint +p_atomic_int_get (const volatile pint *atomic) +{ + pint value; + + p_mutex_lock (pp_atomic_mutex); + value = *atomic; + p_mutex_unlock (pp_atomic_mutex); + + return value; +} + +P_LIB_API void +p_atomic_int_set (volatile pint *atomic, + pint val) +{ + p_mutex_lock (pp_atomic_mutex); + *atomic = val; + p_mutex_unlock (pp_atomic_mutex); +} + +P_LIB_API void +p_atomic_int_inc (volatile pint *atomic) +{ + p_mutex_lock (pp_atomic_mutex); + (*atomic)++; + p_mutex_unlock (pp_atomic_mutex); +} + +P_LIB_API pboolean +p_atomic_int_dec_and_test (volatile pint *atomic) +{ + pboolean is_zero; + + p_mutex_lock (pp_atomic_mutex); + is_zero = --(*atomic) == 0; + p_mutex_unlock (pp_atomic_mutex); + + return is_zero; +} + +P_LIB_API pboolean +p_atomic_int_compare_and_exchange (volatile pint *atomic, + pint oldval, + pint newval) +{ + pboolean success; + + p_mutex_lock (pp_atomic_mutex); + + if ((success = (*atomic == oldval))) + *atomic = newval; + + p_mutex_unlock (pp_atomic_mutex); + + return success; +} + +P_LIB_API pint +p_atomic_int_add (volatile pint *atomic, + pint val) +{ + pint oldval; + + p_mutex_lock (pp_atomic_mutex); + oldval = *atomic; + *atomic = oldval + val; + p_mutex_unlock (pp_atomic_mutex); + + return oldval; +} + +P_LIB_API puint +p_atomic_int_and (volatile puint *atomic, + puint val) +{ + puint oldval; + + p_mutex_lock (pp_atomic_mutex); + oldval = *atomic; + *atomic = oldval & val; + p_mutex_unlock (pp_atomic_mutex); + + return oldval; +} + +P_LIB_API puint +p_atomic_int_or (volatile puint *atomic, + puint val) +{ + puint oldval; + + p_mutex_lock (pp_atomic_mutex); + oldval = *atomic; + *atomic = oldval | val; + p_mutex_unlock (pp_atomic_mutex); + + return oldval; +} + +P_LIB_API puint +p_atomic_int_xor (volatile puint *atomic, + puint val) +{ + puint oldval; + + p_mutex_lock (pp_atomic_mutex); + oldval = *atomic; + *atomic = oldval ^ val; + p_mutex_unlock (pp_atomic_mutex); + + return oldval; +} + +P_LIB_API ppointer +p_atomic_pointer_get (const volatile void *atomic) +{ + const volatile ppointer *ptr = atomic; + ppointer value; + + p_mutex_lock (pp_atomic_mutex); + value = *ptr; + p_mutex_unlock (pp_atomic_mutex); + + return value; +} + +P_LIB_API void +p_atomic_pointer_set (volatile void *atomic, + ppointer val) +{ + volatile ppointer *ptr = atomic; + + p_mutex_lock (pp_atomic_mutex); + *ptr = val; + p_mutex_unlock (pp_atomic_mutex); +} + +P_LIB_API pboolean +p_atomic_pointer_compare_and_exchange (volatile void *atomic, + ppointer oldval, + ppointer newval) +{ + volatile ppointer *ptr = atomic; + pboolean success; + + p_mutex_lock (pp_atomic_mutex); + + if ((success = (*ptr == oldval))) + *ptr = newval; + + p_mutex_unlock (pp_atomic_mutex); + + return success; +} + +P_LIB_API pssize +p_atomic_pointer_add (volatile void *atomic, + pssize val) +{ + volatile pssize *ptr = atomic; + pssize oldval; + + p_mutex_lock (pp_atomic_mutex); + oldval = *ptr; + *ptr = oldval + val; + p_mutex_unlock (pp_atomic_mutex); + + return oldval; +} + +P_LIB_API psize +p_atomic_pointer_and (volatile void *atomic, + psize val) +{ + volatile psize *ptr = atomic; + psize oldval; + + p_mutex_lock (pp_atomic_mutex); + oldval = *ptr; + *ptr = oldval & val; + p_mutex_unlock (pp_atomic_mutex); + + return oldval; +} + +P_LIB_API psize +p_atomic_pointer_or (volatile void *atomic, + psize val) +{ + volatile psize *ptr = atomic; + psize oldval; + + p_mutex_lock (pp_atomic_mutex); + oldval = *ptr; + *ptr = oldval | val; + p_mutex_unlock (pp_atomic_mutex); + + return oldval; +} + +P_LIB_API psize +p_atomic_pointer_xor (volatile void *atomic, + psize val) +{ + volatile psize *ptr = atomic; + psize oldval; + + p_mutex_lock (pp_atomic_mutex); + oldval = *ptr; + *ptr = oldval ^ val; + p_mutex_unlock (pp_atomic_mutex); + + return oldval; +} + +P_LIB_API pboolean +p_atomic_is_lock_free (void) +{ + return FALSE; +} + +void +p_atomic_thread_init (void) +{ + if (P_LIKELY (pp_atomic_mutex == NULL)) + pp_atomic_mutex = p_mutex_new (); +} + +void +p_atomic_thread_shutdown (void) +{ + if (P_LIKELY (pp_atomic_mutex != NULL)) { + p_mutex_free (pp_atomic_mutex); + pp_atomic_mutex = NULL; + } +} -- cgit v1.2.1