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-rw-r--r--projects/hsm/Makefile2
-rw-r--r--projects/hsm/mgmt-task.c34
-rw-r--r--task.c48
-rw-r--r--task.h11
4 files changed, 94 insertions, 1 deletions
diff --git a/projects/hsm/Makefile b/projects/hsm/Makefile
index 927c9f1..ecd1a5d 100644
--- a/projects/hsm/Makefile
+++ b/projects/hsm/Makefile
@@ -13,6 +13,8 @@ OBJS = mgmt-cli.o \
BOARD_OBJS += $(TOPLEVEL)/task.o
+CFLAGS += -DTASK_METRICS
+
CFLAGS += -DNUM_RPC_TASK=4
CFLAGS += -I$(LIBHAL_SRC)
diff --git a/projects/hsm/mgmt-task.c b/projects/hsm/mgmt-task.c
index ac1a737..9f6a908 100644
--- a/projects/hsm/mgmt-task.c
+++ b/projects/hsm/mgmt-task.c
@@ -73,10 +73,42 @@ static int cmd_task_show(struct cli_def *cli, const char *command, char *argv[],
return CLI_OK;
}
+#ifdef TASK_METRICS
+static int cmd_task_show_metrics(struct cli_def *cli, const char *command, char *argv[], int argc)
+{
+ struct task_metrics tm;
+
+ task_get_metrics(&tm);
+
+ cli_print(cli, "avg time between yields: %ld.%06ld sec", tm.avg.tv_sec, tm.avg.tv_usec);
+ cli_print(cli, "max time between yields: %ld.%06ld sec", tm.max.tv_sec, tm.max.tv_usec);
+
+ return CLI_OK;
+}
+
+static int cmd_task_reset_metrics(struct cli_def *cli, const char *command, char *argv[], int argc)
+{
+ task_reset_metrics();
+
+ return CLI_OK;
+}
+#endif
+
void configure_cli_task(struct cli_def *cli)
{
struct cli_command *c = cli_register_command(cli, NULL, "task", NULL, 0, 0, NULL);
/* task show */
- cli_register_command(cli, c, "show", cmd_task_show, 0, 0, "Show the active tasks");
+ struct cli_command *c_show = cli_register_command(cli, c, "show", cmd_task_show, 0, 0, "Show the active tasks");
+
+#ifdef TASK_METRICS
+ /* task show metrics */
+ cli_register_command(cli, c_show, "metrics", cmd_task_show_metrics, 0, 0, "Show task metrics");
+
+ /* task reset */
+ struct cli_command *c_reset = cli_register_command(cli, c, "reset", NULL, 0, 0, NULL);
+
+ /* task reset metrics */
+ cli_register_command(cli, c_reset, "metrics", cmd_task_reset_metrics, 0, 0, "Reset task metrics");
+#endif
}
diff --git a/task.c b/task.c
index 2e2ddec..e156940 100644
--- a/task.c
+++ b/task.c
@@ -81,6 +81,14 @@ static tcb_t *cur_task = NULL;
#define STACK_GUARD_WORD 0x55AA5A5A
+#ifdef 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 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 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 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
diff --git a/task.h b/task.h
index 6b45db8..24f87ce 100644
--- a/task.h
+++ b/task.h
@@ -73,4 +73,15 @@ extern void task_delay(uint32_t delay);
extern void task_mutex_lock(task_mutex_t *mutex);
extern void task_mutex_unlock(task_mutex_t *mutex);
+#ifdef TASK_METRICS
+#include <sys/time.h>
+
+struct task_metrics {
+ struct timeval avg, max;
+};
+
+void task_get_metrics(struct task_metrics *tm);
+void task_reset_metrics(void);
+#endif
+
#endif /* _TASK_H_ */