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px4-firmware
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Merge branch 'master' of github.com:PX4/Firmware

This commit is contained in:
Lorenz Meier 2012-11-12 10:48:00 +01:00
parent c57be7a7a7 dca3bce1ca
commit 03d58e9b00
2 changed files with 67 additions and 6 deletions
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70
apps/systemlib/perf_counter.c
View File

@ -73,6 +73,20 @@ struct perf_ctr_elapsed {
uint64_t time_most;
};
/**
* PC_INTERVAL counter.
*/
struct perf_ctr_interval {
struct perf_ctr_header hdr;
uint64_t event_count;
uint64_t time_event;
uint64_t time_first;
uint64_t time_last;
uint64_t time_least;
uint64_t time_most;
};
/**
* List of all known counters.
*/
@ -93,6 +107,10 @@ perf_alloc(enum perf_counter_type type, const char *name)
ctr = (perf_counter_t)calloc(sizeof(struct perf_ctr_elapsed), 1);
break;
case PC_INTERVAL:
ctr = (perf_counter_t)calloc(sizeof(struct perf_ctr_interval), 1);
break;
default:
break;
}
@ -127,6 +145,32 @@ perf_count(perf_counter_t handle)
((struct perf_ctr_count *)handle)->event_count++;
break;
case PC_INTERVAL: {
struct perf_ctr_interval *pci = (struct perf_ctr_interval *)handle;
hrt_abstime now = hrt_absolute_time();
switch (pci->event_count) {
case 0:
pci->time_first = now;
break;
case 1:
pci->time_least = now - pci->time_last;
pci->time_most = now - pci->time_last;
break;
default: {
hrt_abstime interval = now - pci->time_last;
if (interval < pci->time_least)
pci->time_least = interval;
if (interval > pci->time_most)
pci->time_most = interval;
break;
}
}
pci->time_last = now;
pci->event_count++;
break;
}
default:
break;
}
@ -187,13 +231,29 @@ perf_print_counter(perf_counter_t handle)
((struct perf_ctr_count *)handle)->event_count);
break;
case PC_ELAPSED:
case PC_ELAPSED: {
struct perf_ctr_elapsed *pce = (struct perf_ctr_elapsed *)handle;
printf("%s: %llu events, %lluus elapsed, min %lluus max %lluus\n",
handle->name,
((struct perf_ctr_elapsed *)handle)->event_count,
((struct perf_ctr_elapsed *)handle)->time_total,
((struct perf_ctr_elapsed *)handle)->time_least,
((struct perf_ctr_elapsed *)handle)->time_most);
pce->event_count,
pce->time_total,
pce->time_least,
pce->time_most);
break;
}
case PC_INTERVAL: {
struct perf_ctr_interval *pci = (struct perf_ctr_interval *)handle;
printf("%s: %llu events, %llu avg, min %lluus max %lluus\n",
handle->name,
pci->event_count,
(pci->time_last - pci->time_first) / pci->event_count,
pci->time_least,
pci->time_most);
break;
}
default:
break;

3
apps/systemlib/perf_counter.h
View File

@ -44,7 +44,8 @@
*/
enum perf_counter_type {
PC_COUNT, /**< count the number of times an event occurs */
PC_ELAPSED /**< measure the time elapsed performing an event */
PC_ELAPSED, /**< measure the time elapsed performing an event */
PC_INTERVAL /**< measure the interval between instances of an event */
};
struct perf_ctr_header;