esp-idf/components/newlib/test/test_atomic.c

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/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
#include "unity.h"
#include <stdatomic.h>
#include "esp_log.h"
#include "esp_attr.h"
#include "hal/cpu_hal.h"
#include "esp_private/cache_utils.h"
#define RECORD_TIME_PREPARE() uint32_t __t1, __t2
#define RECORD_TIME_START() do {__t1 = cpu_hal_get_cycle_count();}while(0)
#define RECORD_TIME_END(p_time) do{__t2 = cpu_hal_get_cycle_count(); *p_time = (__t2-__t1);}while(0)
#define TEST_TIMES 11
//Test twice, and only get the result of second time, to avoid influence of cache miss
#define TEST_WRAP_START() \
RECORD_TIME_PREPARE(); \
spi_flash_disable_interrupts_caches_and_other_cpu(); \
for (int i = 0; i < 2; i++) { \
RECORD_TIME_START();
#define TEST_WRAP_END(output) \
RECORD_TIME_END(output); \
} \
spi_flash_enable_interrupts_caches_and_other_cpu();
typedef void (*test_f)(uint32_t* t_op);
static const char TAG[] = "test_atomic";
static uint32_t s_t_ref;
static void sorted_array_insert(uint32_t* array, int* size, uint32_t item)
{
int pos;
for (pos = *size; pos>0; pos--) {
if (array[pos-1] < item) break;
array[pos] = array[pos-1];
}
array[pos]=item;
(*size)++;
}
static void test_flow(const char* name, test_f func)
{
int t_flight_num = 0;
uint32_t t_flight_sorted[TEST_TIMES];
for (int i = 0; i < TEST_TIMES; i++) {
uint32_t t_op;
func(&t_op);
sorted_array_insert(t_flight_sorted, &t_flight_num, t_op);
}
for (int i = 0; i < TEST_TIMES; i++) {
ESP_LOGI(TAG, "%s: %d ops", name, t_flight_sorted[i]-s_t_ref);
}
}
static IRAM_ATTR void test_ref(uint32_t* t_op)
{
TEST_WRAP_START()
TEST_WRAP_END(t_op)
s_t_ref = *t_op;
}
static IRAM_ATTR void test_atomic_load(uint32_t* t_op)
{
atomic_uint_fast32_t var;
uint32_t target = rand();
TEST_WRAP_START()
target = atomic_load(&var);
TEST_WRAP_END(t_op)
(void) target;
}
static IRAM_ATTR void test_atomic_store(uint32_t* t_op)
{
atomic_uint_fast32_t var;
uint32_t src = rand();
TEST_WRAP_START()
atomic_store(&var, src);
TEST_WRAP_END(t_op)
}
static IRAM_ATTR void test_atomic_store_load(uint32_t* t_op)
{
atomic_uint_fast32_t var;
uint32_t src = rand();
TEST_WRAP_START()
atomic_store(&var, src);
src = atomic_load(&var);
TEST_WRAP_END(t_op)
}
static IRAM_ATTR void test_atomic_fetch_and(uint32_t* t_op)
{
atomic_uint_fast32_t var;
uint32_t src = rand();
TEST_WRAP_START()
src = atomic_fetch_and(&var, src);
TEST_WRAP_END(t_op)
}
static IRAM_ATTR void test_atomic_fetch_or(uint32_t* t_op)
{
atomic_uint_fast32_t var;
uint32_t src = rand();
TEST_WRAP_START()
src = atomic_fetch_or(&var, src);
TEST_WRAP_END(t_op)
}
static IRAM_ATTR void test_atomic_compare_exchange(uint32_t* t_op)
{
atomic_uint_fast32_t var;
uint32_t src = rand();
uint32_t cmp = rand();
bool res;
TEST_WRAP_START()
res = atomic_compare_exchange_weak(&var, &src, cmp);
TEST_WRAP_END(t_op)
(void) res;
}
TEST_CASE("test atomic","[atomic]")
{
test_flow("ref", test_ref);
test_flow("atomic_load", test_atomic_load);
test_flow("atomic_store", test_atomic_store);
test_flow("atomic_compare_exchange", test_atomic_compare_exchange);
test_flow("atomic_store + atomic_load", test_atomic_store_load);
test_flow("atomic_and", test_atomic_fetch_and);
test_flow("atomic_or", test_atomic_fetch_or);
}