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benchmarks/latmus: make sure to parse last bulk of samples 

We may not get back to the test sitter upon signal (SIGINT/SIGALRM),
so move the code parsing the last data bulk behind the sigwait() call
instead.

Signed-off-by: Philippe Gerum <rpm@xenomai.org>
This commit is contained in:
Philippe Gerum 2020-06-14 19:31:43 +02:00
parent 1fcb27776a
commit 936572d78d
1 changed files with 12 additions and 6 deletions
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18
benchmarks/latmus.c
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@ -251,6 +251,8 @@ static int32_t *histogram;
static unsigned int histogram_cells = 200;
static struct latmus_measurement last_bulk;
static unsigned int all_overruns;
static unsigned int spurious_inband_switches;
@ -425,7 +427,6 @@ static void *timer_responder(void *arg)
static void *timer_test_sitter(void *arg)
{
struct latmus_measurement_result mr;
struct latmus_measurement last;
struct latmus_result result;
int ret;
@ -437,7 +438,7 @@ static void *timer_test_sitter(void *arg)
if (ret < 0)
error(1, -ret, "evl_attach_self() failed");
mr.last_ptr = (__u64)(uintptr_t)&last;
mr.last_ptr = (__u64)(uintptr_t)&last_bulk;
mr.histogram_ptr = (__u64)(uintptr_t)histogram;
mr.len = histogram ? histogram_cells * sizeof(int32_t) : 0;
@ -449,10 +450,6 @@ static void *timer_test_sitter(void *arg)
if (ret)
error(1, errno, "measurement failed");
/* Add results from the last incomplete bulk. */
if (last.samples > 0)
__log_results(&last);
return NULL;
}
@ -493,6 +490,15 @@ static void setup_measurement_on_timer(void)
sigwait(&sigmask, &sig);
pthread_cancel(sitter);
pthread_join(sitter, NULL);
/*
* Add results from the last incomplete bulk once the sitter
* has returned to user-space from oob_ioctl(EVL_LATIOC_RUN)
* then exited, at which point such bulk contains meaningful
* data.
*/
if (last_bulk.samples > 0)
__log_results(&last_bulk);
}
static void setup_gpio_pins(int *fds)