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/*
* 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)
{
}
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