76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/* Application Trace to Host Example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include "esp_sysview_trace.h"
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#include "esp_heap_trace.h"
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#include "esp_log.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/queue.h"
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static const char *TAG = "example";
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// waits on queue for memory addresses and frees memory allocated by 'alloc_task'
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static void free_task(void *p)
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{
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QueueHandle_t queue = (QueueHandle_t)p;
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while (1) {
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void *p = NULL;
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if (xQueueReceive(queue, ( void * )&p, portMAX_DELAY) != pdPASS) {
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ESP_LOGE(TAG, "Failed to send to queue!");
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} else {
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ESP_LOGI(TAG, "Task[%p]: free memory @ %p", xTaskGetCurrentTaskHandle(), p);
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free(p);
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}
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}
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}
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// allocates memory and puts addresses to the queue
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static void alloc_task(void *p)
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{
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QueueHandle_t queue = (QueueHandle_t)p;
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xTaskCreatePinnedToCore(free_task, "free", 2048, queue, 5, NULL, portNUM_PROCESSORS-1);
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// here GDB will stop at brekpoint and execute OpenOCD command to start tracing
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heap_trace_start(HEAP_TRACE_ALL);
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for(int i = 1; i < 5; i++) {
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uint32_t sz = 2*i;
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void *p = malloc(sz/2);
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// WARNING: the previous allocated memory is intentionally not deallocated in order to cause memory leak!
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p = malloc(sz);
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ESP_LOGI(TAG, "Task[%p]: allocated %d bytes @ %p", xTaskGetCurrentTaskHandle(), sz, p);
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if (xQueueSend(queue, ( void * )&p, portMAX_DELAY) != pdPASS) {
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ESP_LOGE(TAG, "Failed to send to queue!");
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}
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vTaskDelay(100/portTICK_PERIOD_MS);
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}
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// here GDB will stop at brekpoint and execute OpenOCD command to stop tracing
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heap_trace_stop();
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while(1);
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}
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void app_main(void)
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{
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// redirect log messages to the host using SystemView tracing module
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esp_log_set_vprintf(&esp_sysview_vprintf);
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QueueHandle_t queue = xQueueCreate(10, sizeof(void *));
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if(queue == 0) {
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ESP_LOGE(TAG, "Failed to create queue!");
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return;
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}
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// init host-based heap tracing
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if(heap_trace_init_tohost() != ESP_OK) {
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ESP_LOGE(TAG, "Failed to init heap trace!");
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return;
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}
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xTaskCreatePinnedToCore(alloc_task, "alloc", 2048, queue, 5, NULL, 0);
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}
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