/usr/include/sphde/sasatom_generic.h is in libsphde-dev 1.3.0-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 | /*
* Copyright (c) 1995-2014 IBM Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*/
#ifndef _SASATOMIC_GENERIC_H
#define _SASATOMIC_GENERIC_H
#define __arch_sas_write_barrier() __asm ("" ::: "memory")
#define __arch_sas_read_barrier() __asm ("" ::: "memory")
#define __arch_sas_full_barrier() __asm ("" ::: "memory")
static inline void
__arch_pause (void)
{
__asm__ (
" nop;"
:
:
: "memory"
);
}
#if GCC_VERSION >= 40700
static inline void *
__arch_fetch_and_add_ptr(void **pointer, long int delta)
{
return __atomic_fetch_add (pointer, delta, __ATOMIC_RELAXED);
}
#else
static inline void *
__arch_fetch_and_add_ptr(void **pointer, long int delta)
{
return (void*)__sync_fetch_and_add((long int*)*pointer, delta);
}
#endif
#if GCC_VERSION >= 40700
static inline long int
__arch_fetch_and_add(long int *pointer, long int delta)
{
return __atomic_fetch_add (pointer, delta, __ATOMIC_RELAXED);
}
#else
static inline long int
__arch_fetch_and_add(void *pointer, long int delta)
{
return __sync_fetch_and_add((long int*)pointer, delta);
}
#endif
#if GCC_VERSION >= 40700
static inline int
__arch_compare_and_swap (volatile long int *pointer,
long int oldval, long int newval)
{
long int temp = oldval;
return __atomic_compare_exchange_n (pointer, &temp, newval, 1, __ATOMIC_ACQUIRE, __ATOMIC_RELAXED);
}
#else
static inline int
__arch_compare_and_swap (volatile long int *p, long int oldval, long int newval)
{
return __sync_val_compare_and_swap(p, oldval, newval);
}
#endif
#if GCC_VERSION >= 40700
static inline long int
__arch_atomic_swap (long int *pointer, long int replace)
{
return __atomic_exchange_n (pointer, replace, __ATOMIC_RELAXED);
}
#else
static inline long int __arch_atomic_swap(long int *p, long int replace)
{
long temp = *p;
int success = 0;
//*p = replace;
do {
temp = *p;
success = __sync_bool_compare_and_swap (p, temp, replace);
}while (!success);
return temp;
}
#endif
#if GCC_VERSION >= 40700
static inline void
__arch_atomic_inc(long int *pointer)
{
const long int inc_val = 1L;
__atomic_fetch_add (pointer, inc_val, __ATOMIC_RELAXED);
}
#else
static inline void
__arch_atomic_inc (long int *pointer)
{
const long int inc_val = 1L;
//(*p)++;
__sync_fetch_and_add (pointer, inc_val);
}
#endif
#if GCC_VERSION >= 40700
static inline void
__arch_atomic_dec(long int *pointer)
{
const long int inc_val = -1L;
__atomic_fetch_add (pointer, inc_val, __ATOMIC_RELAXED);
}
#else
static inline void
__arch_atomic_dec (long int *pointer)
{
const long int inc_val = -1L;
//(*p)--;
__sync_fetch_and_add (pointer, inc_val);
}
#endif
#if GCC_VERSION >= 40700
static inline void
__arch_sas_spin_lock (volatile sas_spin_lock_t *lock)
{
int oldval = 0;
int newval = 1;
int success = 0;
do {
success = __atomic_compare_exchange_n (lock, &oldval, newval, 1,
__ATOMIC_ACQUIRE, __ATOMIC_RELAXED);
} while (!success);
}
#else
static inline void
__arch_sas_spin_lock (volatile sas_spin_lock_t *lock)
{
int oldval = 0;
int newval = 1;
int success = 0;
do {
success = __sync_bool_compare_and_swap (lock, oldval, newval);
} while (!success);
}
#endif
#if GCC_VERSION >= 40700
static inline int
__arch_sas_spin_trylock (volatile sas_spin_lock_t *lock)
{
int oldval = 0;
int newval = 1;
int success = 0;
success = __atomic_compare_exchange_n (lock, &oldval, newval, 1,
__ATOMIC_ACQUIRE, __ATOMIC_RELAXED);
return (!success);
}
#else
static inline int
__arch_sas_spin_trylock (volatile sas_spin_lock_t *lock)
{
int oldval = 0;
int newval = 1;
int success;
success = __sync_bool_compare_and_swap (lock, oldval, newval);
return (!success);
}
#endif
#endif // _SASATOMIC_GENERIC_H
|