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#include <gtest/gtest.h>
extern "C" {
#include "atomic.h"
}
const static size_t ATOMIC_DATA_MAX = 2;
const static int ATOMIC_MAX_THREADS = 20;
struct atomic_test_s32_s {
pthread_t pthread_id;
int thread_num;
int max_val;
atomic_s32_t *data;
};
void *atomic_thread(void *context) {
struct atomic_test_s32_s *at = (struct atomic_test_s32_s *)context;
for (int i = 0; i < at->max_val; i++) {
usleep(1);
atomic_inc_prefix_s32(&at->data[i]);
}
return NULL;
}
void *atomic_thread_inc_dec(void *context) {
struct atomic_test_s32_s *at = (struct atomic_test_s32_s *)context;
for (int i = 0; i < at->max_val; i++) {
usleep(1);
atomic_inc_prefix_s32(&at->data[i]);
usleep(1);
atomic_dec_prefix_s32(&at->data[i]);
}
return NULL;
}
TEST(AtomicTest, test_store_load_s32) {
atomic_s32_t data;
atomic_store_s32(&data, -1);
EXPECT_EQ(-1, atomic_load_s32(&data));
atomic_store_s32(&data, 0);
EXPECT_EQ(0, atomic_load_s32(&data));
atomic_store_s32(&data, 1);
EXPECT_EQ(1, atomic_load_s32(&data));
atomic_store_s32(&data, 2);
EXPECT_EQ(2, atomic_load_s32(&data));
}
TEST(AtomicTest, test_store_load_u32) {
atomic_u32_t data;
atomic_store_u32(&data, -1);
EXPECT_EQ((uint32_t)-1, atomic_load_u32(&data));
atomic_store_u32(&data, 0);
EXPECT_EQ((uint32_t)0, atomic_load_u32(&data));
atomic_store_u32(&data, 1);
EXPECT_EQ((uint32_t)1, atomic_load_u32(&data));
atomic_store_u32(&data, 2);
EXPECT_EQ((uint32_t)2, atomic_load_u32(&data));
}
TEST(AtomicTest, test_inc_dec_s32) {
atomic_s32_t data;
atomic_store_s32(&data, 0);
EXPECT_EQ(0, atomic_load_s32(&data));
int32_t val = atomic_inc_prefix_s32(&data);
EXPECT_EQ(1, atomic_load_s32(&data));
EXPECT_EQ(1, val);
val = atomic_inc_prefix_s32(&data);
EXPECT_EQ(2, atomic_load_s32(&data));
EXPECT_EQ(2, val);
val = atomic_inc_prefix_s32(&data);
EXPECT_EQ(3, atomic_load_s32(&data));
EXPECT_EQ(3, val);
val = atomic_dec_prefix_s32(&data);
EXPECT_EQ(2, val);
val = atomic_dec_prefix_s32(&data);
EXPECT_EQ(1, val);
val = atomic_dec_prefix_s32(&data);
EXPECT_EQ(0, val);
val = atomic_dec_prefix_s32(&data);
EXPECT_EQ(-1, val);
}
TEST(AtomicTest, test_inc_dec_u32) {
atomic_u32_t data;
atomic_store_u32(&data, 0);
EXPECT_EQ((unsigned)0, atomic_load_u32(&data));
uint32_t val = atomic_inc_prefix_u32(&data);
EXPECT_EQ((unsigned)1, atomic_load_u32(&data));
EXPECT_EQ((unsigned)1, val);
val = atomic_inc_prefix_u32(&data);
EXPECT_EQ((unsigned)2, atomic_load_u32(&data));
EXPECT_EQ((unsigned)2, val);
val = atomic_inc_prefix_u32(&data);
EXPECT_EQ((unsigned)3, atomic_load_u32(&data));
EXPECT_EQ((unsigned)3, val);
val = atomic_dec_prefix_u32(&data);
EXPECT_EQ((unsigned)2, val);
val = atomic_dec_prefix_u32(&data);
EXPECT_EQ((unsigned)1, val);
val = atomic_dec_prefix_u32(&data);
EXPECT_EQ((unsigned)0, val);
val = atomic_dec_prefix_u32(&data);
EXPECT_EQ((unsigned)-1, val);
}
TEST(AtomicTest, test_atomic_inc_thread) {
struct atomic_test_s32_s atomic_test[ATOMIC_MAX_THREADS];
atomic_s32_t data[ATOMIC_DATA_MAX];
memset(&atomic_test, 0, sizeof(atomic_test));
memset(data, 0, sizeof(data));
for (unsigned int i = 0; i < ATOMIC_DATA_MAX; i++) {
EXPECT_EQ(0, data[i]._val);
}
for (int i = 0; i < ATOMIC_MAX_THREADS; i++) {
atomic_test[i].thread_num = i;
atomic_test[i].max_val = ATOMIC_DATA_MAX;
atomic_test[i].data = data;
pthread_create(&atomic_test[i].pthread_id, NULL, atomic_thread, &atomic_test[i]);
}
for (int i = 0; i < ATOMIC_MAX_THREADS; i++) {
int rc = pthread_join(atomic_test[i].pthread_id, NULL);
EXPECT_EQ(0, rc);
}
for (unsigned int i = 0; i < ATOMIC_DATA_MAX; i++) {
EXPECT_EQ(1 * ATOMIC_MAX_THREADS, data[i]._val);
}
}
TEST(AtomicTest, test_atomic_inc_thread_single) {
struct atomic_test_s32_s atomic_test[ATOMIC_MAX_THREADS];
atomic_s32_t data;
memset(&atomic_test, 0, sizeof(atomic_test));
memset(&data, 0, sizeof(data));
EXPECT_EQ(0, data._val);
for (int i = 0; i < ATOMIC_MAX_THREADS; i++) {
atomic_test[i].thread_num = i;
atomic_test[i].max_val = 1;
atomic_test[i].data = &data;
pthread_create(&atomic_test[i].pthread_id, NULL, atomic_thread_inc_dec, &atomic_test[i]);
}
for (int i = 0; i < ATOMIC_MAX_THREADS; i++) {
int rc = pthread_join(atomic_test[i].pthread_id, NULL);
EXPECT_EQ(0, rc);
}
EXPECT_EQ(0, data._val);
}
TEST(AtomicTest, test_store_load_s64) {
atomic_s64_t data;
atomic_store_s64(&data, -1);
EXPECT_EQ(-1, atomic_load_s64(&data));
atomic_store_s64(&data, 0);
EXPECT_EQ(0, atomic_load_s64(&data));
atomic_store_s64(&data, 1);
EXPECT_EQ(1, atomic_load_s64(&data));
atomic_store_s64(&data, 2);
EXPECT_EQ(2, atomic_load_s64(&data));
}
TEST(AtomicTest, test_inc_dec_s64) {
atomic_s64_t data;
atomic_store_s64(&data, 0);
EXPECT_EQ(0, atomic_load_s64(&data));
int64_t val = atomic_inc_prefix_s64(&data);
EXPECT_EQ(1, atomic_load_s64(&data));
EXPECT_EQ(1, val);
val = atomic_inc_prefix_s64(&data);
EXPECT_EQ(2, atomic_load_s64(&data));
EXPECT_EQ(2, val);
val = atomic_inc_prefix_s64(&data);
EXPECT_EQ(3, atomic_load_s64(&data));
EXPECT_EQ(3, val);
val = atomic_dec_prefix_s64(&data);
EXPECT_EQ(2, val);
val = atomic_dec_prefix_s64(&data);
EXPECT_EQ(1, val);
val = atomic_dec_prefix_s64(&data);
EXPECT_EQ(0, val);
val = atomic_dec_prefix_s64(&data);
EXPECT_EQ(-1, val);
// Mutating using postfix.
val = atomic_inc_postfix_s64(&data);
EXPECT_EQ(0, atomic_load_s64(&data));
EXPECT_EQ(-1, val);
val = atomic_inc_postfix_s64(&data);
EXPECT_EQ(1, atomic_load_s64(&data));
EXPECT_EQ(0, val);
val = atomic_inc_postfix_s64(&data);
EXPECT_EQ(2, atomic_load_s64(&data));
EXPECT_EQ(1, val);
val = atomic_dec_postfix_s64(&data);
EXPECT_EQ(2, val);
val = atomic_dec_postfix_s64(&data);
EXPECT_EQ(1, val);
val = atomic_dec_postfix_s64(&data);
EXPECT_EQ(0, val);
val = atomic_dec_postfix_s64(&data);
EXPECT_EQ(-1, val);
EXPECT_EQ(-2, atomic_load_s64(&data));
}
TEST(AtomicTest, test_add_sub_u64) {
atomic_u64_t data;
atomic_store_u64(&data, 0);
EXPECT_EQ((unsigned)0, atomic_load_u64(&data));
uint64_t val = atomic_add_u64(&data, 0xffff);
EXPECT_EQ((unsigned)0xffff, atomic_load_u64(&data));
EXPECT_EQ((unsigned)0xffff, val);
val = atomic_add_u64(&data, 0xffff);
EXPECT_EQ((unsigned)(2 * 0xffff), atomic_load_u64(&data));
EXPECT_EQ((unsigned)(2 * 0xffff), val);
val = atomic_add_u64(&data, 0xffff);
EXPECT_EQ((unsigned)(3 * 0xffff), atomic_load_u64(&data));
EXPECT_EQ((unsigned)(3 * 0xffff), val);
EXPECT_NE((unsigned)(3 * 0xfff0), val);
val = atomic_sub_u64(&data, 0xffff);
EXPECT_EQ((unsigned)(2 * 0xffff), val);
val = atomic_sub_u64(&data, 0);
EXPECT_EQ((unsigned)(2 * 0xffff), val);
val = atomic_sub_u64(&data, 0xffff);
EXPECT_EQ((unsigned)(1 * 0xffff), val);
val = atomic_sub_u64(&data, 0xffff);
EXPECT_EQ((unsigned)0, val);
}
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