mirror of
https://github.com/espressif/esp-idf.git
synced 2024-09-19 14:26:01 -04:00
6bd9580137
Main change is possibility the log cache locking functions will be called before the scheduler has started. This change doesn't change the behaviour of ESP_EARLY_LOGx, this is done in the following commit. Closes https://github.com/espressif/esp-idf/issues/5542
123 lines
3.6 KiB
C
123 lines
3.6 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdint.h>
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#include <time.h>
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#include <sys/time.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/semphr.h"
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#include "hal/cpu_hal.h" // for cpu_hal_get_cycle_count()
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#include "esp_compiler.h"
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#include "esp_log.h"
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#include "esp_log_private.h"
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// Maximum time to wait for the mutex in a logging statement.
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//
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// We don't expect this to happen in most cases, as contention is low. The most likely case is if a
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// log function is called from an ISR (technically caller should use the ISR-friendly logging macros but
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// possible they use the normal one instead and disable the log type by tag).
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#define MAX_MUTEX_WAIT_MS 10
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#define MAX_MUTEX_WAIT_TICKS ((MAX_MUTEX_WAIT_MS + portTICK_PERIOD_MS - 1) / portTICK_PERIOD_MS)
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static SemaphoreHandle_t s_log_mutex = NULL;
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void esp_log_impl_lock(void)
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{
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if (unlikely(!s_log_mutex)) {
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s_log_mutex = xSemaphoreCreateMutex();
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}
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if (unlikely(xTaskGetSchedulerState() == taskSCHEDULER_NOT_STARTED)) {
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return;
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}
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xSemaphoreTake(s_log_mutex, portMAX_DELAY);
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}
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bool esp_log_impl_lock_timeout(void)
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{
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if (unlikely(!s_log_mutex)) {
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s_log_mutex = xSemaphoreCreateMutex();
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}
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if (unlikely(xTaskGetSchedulerState() == taskSCHEDULER_NOT_STARTED)) {
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return true;
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}
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return xSemaphoreTake(s_log_mutex, MAX_MUTEX_WAIT_TICKS) == pdTRUE;
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}
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void esp_log_impl_unlock(void)
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{
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if (unlikely(xTaskGetSchedulerState() == taskSCHEDULER_NOT_STARTED)) {
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return;
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}
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xSemaphoreGive(s_log_mutex);
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}
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char *esp_log_system_timestamp(void)
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{
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static char buffer[18] = {0};
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static _lock_t bufferLock = 0;
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if (xTaskGetSchedulerState() == taskSCHEDULER_NOT_STARTED) {
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uint32_t timestamp = esp_log_early_timestamp();
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for (uint8_t i = 0; i < sizeof(buffer); i++) {
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if ((timestamp > 0) || (i == 0)) {
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for (uint8_t j = sizeof(buffer) - 1; j > 0; j--) {
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buffer[j] = buffer[j - 1];
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}
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buffer[0] = (char)(timestamp % 10) + '0';
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timestamp /= 10;
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} else {
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buffer[i] = 0;
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break;
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}
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}
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return buffer;
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} else {
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struct timeval tv;
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struct tm timeinfo;
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gettimeofday(&tv, NULL);
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localtime_r(&tv.tv_sec, &timeinfo);
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_lock_acquire(&bufferLock);
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snprintf(buffer, sizeof(buffer),
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"%02d:%02d:%02d.%03ld",
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timeinfo.tm_hour,
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timeinfo.tm_min,
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timeinfo.tm_sec,
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tv.tv_usec / 1000);
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_lock_release(&bufferLock);
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return buffer;
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}
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}
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uint32_t esp_log_timestamp(void)
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{
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if (unlikely(xTaskGetSchedulerState() == taskSCHEDULER_NOT_STARTED)) {
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return esp_log_early_timestamp();
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}
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static uint32_t base = 0;
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if (base == 0 && xPortGetCoreID() == 0) {
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base = esp_log_early_timestamp();
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}
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TickType_t tick_count = xPortInIsrContext() ? xTaskGetTickCountFromISR() : xTaskGetTickCount();
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return base + tick_count * (1000 / configTICK_RATE_HZ);
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}
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/* FIXME: define an API for getting the timestamp in soc/hal IDF-2351 */
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uint32_t esp_log_early_timestamp(void)
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{
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#if CONFIG_IDF_TARGET_ESP32
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/* ESP32 ROM stores separate clock rate values for each CPU, but we want the PRO CPU value always */
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extern uint32_t g_ticks_per_us_pro;
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return cpu_hal_get_cycle_count() / (g_ticks_per_us_pro * 1000);
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#else
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return cpu_hal_get_cycle_count() / (ets_get_cpu_frequency() * 1000);
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#endif
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}
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