mirror of
https://github.com/opnsense/src.git
synced 2026-02-11 14:55:36 -05:00
126 lines
3.9 KiB
C
126 lines
3.9 KiB
C
/*-
|
|
* Copyright (c) 2013 Ed Schouten <ed@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <assert.h>
|
|
#include <stdatomic.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
/*
|
|
* Tool for testing the logical behaviour of operations on atomic
|
|
* integer types. These tests make no attempt to actually test whether
|
|
* the functions are atomic or provide the right barrier semantics.
|
|
*
|
|
* For every type, we create an array of 16 elements and repeat the test
|
|
* on every element in the array. This allows us to test whether the
|
|
* atomic operations have no effect on surrounding values. This is
|
|
* especially useful for the smaller integer types, as it may be the
|
|
* case that these operations are implemented by processing entire words
|
|
* (e.g. on MIPS).
|
|
*/
|
|
|
|
static inline intmax_t
|
|
rndnum(void)
|
|
{
|
|
intmax_t v;
|
|
|
|
arc4random_buf(&v, sizeof(v));
|
|
return (v);
|
|
}
|
|
|
|
#define DO_FETCH_TEST(T, a, name, result) do { \
|
|
T v1 = atomic_load(a); \
|
|
T v2 = rndnum(); \
|
|
assert(atomic_##name(a, v2) == v1); \
|
|
assert(atomic_load(a) == (T)(result)); \
|
|
} while (0)
|
|
|
|
#define DO_COMPARE_EXCHANGE_TEST(T, a, name) do { \
|
|
T v1 = atomic_load(a); \
|
|
T v2 = rndnum(); \
|
|
T v3 = rndnum(); \
|
|
if (atomic_compare_exchange_##name(a, &v2, v3)) \
|
|
assert(v1 == v2); \
|
|
else \
|
|
assert(atomic_compare_exchange_##name(a, &v2, v3)); \
|
|
assert(atomic_load(a) == v3); \
|
|
} while (0)
|
|
|
|
#define DO_ALL_TESTS(T, a) do { \
|
|
{ \
|
|
T v1 = rndnum(); \
|
|
atomic_init(a, v1); \
|
|
assert(atomic_load(a) == v1); \
|
|
} \
|
|
{ \
|
|
T v1 = rndnum(); \
|
|
atomic_store(a, v1); \
|
|
assert(atomic_load(a) == v1); \
|
|
} \
|
|
\
|
|
DO_FETCH_TEST(T, a, exchange, v2); \
|
|
DO_FETCH_TEST(T, a, fetch_add, v1 + v2); \
|
|
DO_FETCH_TEST(T, a, fetch_and, v1 & v2); \
|
|
DO_FETCH_TEST(T, a, fetch_or, v1 | v2); \
|
|
DO_FETCH_TEST(T, a, fetch_sub, v1 - v2); \
|
|
DO_FETCH_TEST(T, a, fetch_xor, v1 ^ v2); \
|
|
\
|
|
DO_COMPARE_EXCHANGE_TEST(T, a, weak); \
|
|
DO_COMPARE_EXCHANGE_TEST(T, a, strong); \
|
|
} while (0)
|
|
|
|
#define TEST_TYPE(T) do { \
|
|
int j; \
|
|
struct { _Atomic(T) v[16]; } list, cmp; \
|
|
arc4random_buf(&cmp, sizeof(cmp)); \
|
|
for (j = 0; j < 16; j++) { \
|
|
list = cmp; \
|
|
DO_ALL_TESTS(T, &list.v[j]); \
|
|
list.v[j] = cmp.v[j]; \
|
|
assert(memcmp(&list, &cmp, sizeof(list)) == 0); \
|
|
} \
|
|
} while (0)
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 1000; i++) {
|
|
TEST_TYPE(int8_t);
|
|
TEST_TYPE(uint8_t);
|
|
TEST_TYPE(int16_t);
|
|
TEST_TYPE(uint16_t);
|
|
TEST_TYPE(int32_t);
|
|
TEST_TYPE(uint32_t);
|
|
TEST_TYPE(int64_t);
|
|
TEST_TYPE(uint64_t);
|
|
}
|
|
|
|
return (0);
|
|
}
|