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test(esp_timer): Add regression test for esp_timer task dispatch stall

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This commit is contained in:
Sudeep Mohanty
2026-07-15 16:47:02 +02:00
committed by Konstantin Kondrashov
parent 0da6fc569a
commit 6685c636b3
1 changed files with 71 additions and 0 deletions
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71
components/esp_timer/test_apps/main/test_esp_timer.c
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@@ -22,6 +22,7 @@
#include "test_utils.h"
#include "esp_freertos_hooks.h"
#include "esp_rom_sys.h"
#include "esp_task_wdt.h"
/* include performance pass standards header file */
#include "esp_timer_performance.h"
@@ -1372,6 +1373,76 @@ TEST_CASE("Test ISR dispatch callbacks are not blocked even if TASK callbacks ta
vTaskDelay(3); // wait for the esp_timer task to delete all timers
}
static volatile uint32_t task_timer_count;
static volatile uint32_t isr_timer_count;
static void task_timer_count_cb(void *arg)
{
task_timer_count++;
}
static void IRAM_ATTR isr_timer_count_cb(void *arg)
{
isr_timer_count++;
}
#define NUM_ISR_TIMERS 5
TEST_CASE("TASK dispatch timers not stalled by ISR dispatch timers on shared alarm", "[esp_timer][isr_dispatch][timeout=120]")
{
task_timer_count = 0;
isr_timer_count = 0;
esp_timer_handle_t task_timer;
esp_timer_handle_t isr_timers[NUM_ISR_TIMERS];
const esp_timer_create_args_t task_args = {
.callback = task_timer_count_cb,
.dispatch_method = ESP_TIMER_TASK,
.name = "task_timer",
};
TEST_ESP_OK(esp_timer_create(&task_args, &task_timer));
for (int i = 0; i < NUM_ISR_TIMERS; i++) {
const esp_timer_create_args_t isr_args = {
.callback = isr_timer_count_cb,
.dispatch_method = ESP_TIMER_ISR,
.name = "isr_timer",
};
TEST_ESP_OK(esp_timer_create(&isr_args, &isr_timers[i]));
}
/* One TASK timer at 1s. Multiple ISR timers at harmonic periods that
* frequently collide with the TASK alarm (1s, 500ms, 333ms, 250ms, 200ms).
* This maximizes the shared-alarm race window that triggers the stall. */
TEST_ESP_OK(esp_timer_start_periodic(task_timer, 1 * SEC));
TEST_ESP_OK(esp_timer_start_periodic(isr_timers[0], 1 * SEC));
TEST_ESP_OK(esp_timer_start_periodic(isr_timers[1], SEC / 2));
TEST_ESP_OK(esp_timer_start_periodic(isr_timers[2], SEC / 3));
TEST_ESP_OK(esp_timer_start_periodic(isr_timers[3], SEC / 4));
TEST_ESP_OK(esp_timer_start_periodic(isr_timers[4], SEC / 5));
for (int i = 0; i < 20; i++) {
uint32_t prev_task = task_timer_count;
vTaskDelay(pdMS_TO_TICKS(5000));
esp_task_wdt_reset();
uint32_t cur_task = task_timer_count;
uint32_t cur_isr = isr_timer_count;
printf("check %d/20: task_timer_count=%" PRIu32 " isr_timer_count=%" PRIu32 "\n",
i + 1, cur_task, cur_isr);
// Verify TASK-dispatch callback is still being invoked (not stalled)
TEST_ASSERT_GREATER_THAN_UINT32(prev_task, cur_task);
}
TEST_ESP_OK(esp_timer_stop(task_timer));
TEST_ESP_OK(esp_timer_delete(task_timer));
for (int i = 0; i < NUM_ISR_TIMERS; i++) {
TEST_ESP_OK(esp_timer_stop(isr_timers[i]));
TEST_ESP_OK(esp_timer_delete(isr_timers[i]));
}
}
#endif // CONFIG_ESP_TIMER_SUPPORTS_ISR_DISPATCH_METHOD
typedef struct {