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/*
* test_uatomic.c
*
* Userspace RCU library - test atomic operations
*
* Copyright February 2009 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <assert.h>
#include <urcu/uatomic.h>
struct testvals {
#ifdef UATOMIC_HAS_ATOMIC_BYTE
unsigned char c;
#endif
#ifdef UATOMIC_HAS_ATOMIC_SHORT
unsigned short s;
#endif
unsigned int i;
unsigned long l;
};
static struct testvals vals;
#define do_test(ptr) \
do { \
__typeof__(*(ptr)) v; \
\
uatomic_add(ptr, 10); \
assert(uatomic_read(ptr) == 10); \
uatomic_add(ptr, -11UL); \
assert(uatomic_read(ptr) == (__typeof__(*(ptr)))-1UL); \
v = uatomic_cmpxchg(ptr, -1UL, 22); \
assert(uatomic_read(ptr) == 22); \
assert(v == (__typeof__(*(ptr)))-1UL); \
v = uatomic_cmpxchg(ptr, 33, 44); \
assert(uatomic_read(ptr) == 22); \
assert(v == 22); \
v = uatomic_xchg(ptr, 55); \
assert(uatomic_read(ptr) == 55); \
assert(v == 22); \
uatomic_set(ptr, 22); \
uatomic_inc(ptr); \
assert(uatomic_read(ptr) == 23); \
uatomic_dec(ptr); \
assert(uatomic_read(ptr) == 22); \
v = uatomic_add_return(ptr, 74); \
assert(v == 96); \
assert(uatomic_read(ptr) == 96); \
uatomic_or(ptr, 58); \
assert(uatomic_read(ptr) == 122); \
v = uatomic_sub_return(ptr, 1); \
assert(v == 121); \
uatomic_sub(ptr, (unsigned int) 2); \
assert(uatomic_read(ptr) == 119); \
uatomic_inc(ptr); \
uatomic_inc(ptr); \
assert(uatomic_read(ptr) == 121); \
uatomic_and(ptr, 129); \
assert(uatomic_read(ptr) == 1); \
} while (0)
int main(int argc, char **argv)
{
#ifdef UATOMIC_HAS_ATOMIC_BYTE
do_test(&vals.c);
#endif
#ifdef UATOMIC_HAS_ATOMIC_SHORT
do_test(&vals.s);
#endif
do_test(&vals.i);
do_test(&vals.l);
printf("Atomic ops test OK\n");
return 0;
}
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