diff options
author | Paul Selkirk <paul@psgd.org> | 2017-05-13 13:14:56 -0400 |
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committer | Paul Selkirk <paul@psgd.org> | 2017-05-13 13:21:35 -0400 |
commit | a7ee9a7b76a4ec90d9f864adfc4342f13f8bd499 (patch) | |
tree | 4f7743242aae7da758d769ae7e4220a97a096378 /task.c | |
parent | 65b94ef5ba1981c74a99cb43ee768fbf480c698b (diff) | |
parent | 7ef51e89d5a1d7d75cb0b8d3832327beb46319dd (diff) |
Merge branch 'task_metrics' into profiling
Diffstat (limited to 'task.c')
-rw-r--r-- | task.c | 48 |
1 files changed, 48 insertions, 0 deletions
@@ -81,6 +81,14 @@ static tcb_t *cur_task = NULL; #define STACK_GUARD_WORD 0x55AA5A5A +#ifdef DO_TASK_METRICS +static uint32_t tick_start = 0; +static uint32_t tick_prev = 0; +static uint32_t tick_idle = 0; +static uint32_t tick_max = 0; +static uint32_t nyield = 0; +#endif + /* Add a task. */ tcb_t *task_add(char *name, funcp_t func, void *cookie, void *stack, size_t stack_len) @@ -180,6 +188,10 @@ void task_yield(void) if (tail == NULL) return; +#ifdef DO_TASK_METRICS + uint32_t tick0 = HAL_GetTick(); +#endif + /* Find the next runnable task. Loop if every task is waiting. */ while (1) { next = next_task(); @@ -197,6 +209,20 @@ void task_yield(void) * } while (next == NULL); */ +#ifdef DO_TASK_METRICS + uint32_t tick = HAL_GetTick(); + tick_idle += (tick - tick0); + if (tick_start == 0) + tick_start = tick; + if (tick_prev != 0) { + uint32_t duration = tick0 - tick_prev; + if (duration > tick_max) + tick_max = duration; + } + tick_prev = tick; + ++nyield; +#endif + /* If there are no other runnable tasks (and cur_task is runnable), * we don't need to context-switch. */ @@ -354,3 +380,25 @@ void task_mutex_unlock(task_mutex_t *mutex) if (mutex != NULL) mutex->locked = 0; } + +#ifdef DO_TASK_METRICS +void task_get_metrics(struct task_metrics *tm) +{ + if (tm != NULL) { + tm->avg.tv_sec = 0; + tm->avg.tv_usec = (HAL_GetTick() - tick_start - tick_idle) * 1000 / nyield; + if (tm->avg.tv_usec > 1000000) { + tm->avg.tv_sec = tm->avg.tv_usec / 1000000; + tm->avg.tv_usec = tm->avg.tv_usec % 1000000; + } + tm->max.tv_sec = tick_max / 1000; + tm->max.tv_usec = (tick_max % 1000) * 1000; + } +} + +void task_reset_metrics(void) +{ + tick_start = HAL_GetTick(); + tick_prev = tick_idle = tick_max = nyield = 0; +} +#endif |