fdf9dc4b34
Add function to parse a user time string of the form <start>,<stop> where start and stop are time in sec.nsec format. Both start and stop times are optional. Add function to determine if a sample time is within a given time time window of interest. Signed-off-by: David Ahern <dsahern@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1480439746-42695-2-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
86 lines
1.7 KiB
C
86 lines
1.7 KiB
C
#include <string.h>
|
|
#include <sys/time.h>
|
|
#include <time.h>
|
|
#include <errno.h>
|
|
#include <inttypes.h>
|
|
|
|
#include "perf.h"
|
|
#include "debug.h"
|
|
#include "time-utils.h"
|
|
#include "util.h"
|
|
|
|
static int parse_timestr_sec_nsec(struct perf_time_interval *ptime,
|
|
char *start_str, char *end_str)
|
|
{
|
|
if (start_str && (*start_str != '\0') &&
|
|
(parse_nsec_time(start_str, &ptime->start) != 0)) {
|
|
return -1;
|
|
}
|
|
|
|
if (end_str && (*end_str != '\0') &&
|
|
(parse_nsec_time(end_str, &ptime->end) != 0)) {
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int perf_time__parse_str(struct perf_time_interval *ptime, const char *ostr)
|
|
{
|
|
char *start_str, *end_str;
|
|
char *d, *str;
|
|
int rc = 0;
|
|
|
|
if (ostr == NULL || *ostr == '\0')
|
|
return 0;
|
|
|
|
/* copy original string because we need to modify it */
|
|
str = strdup(ostr);
|
|
if (str == NULL)
|
|
return -ENOMEM;
|
|
|
|
ptime->start = 0;
|
|
ptime->end = 0;
|
|
|
|
/* str has the format: <start>,<stop>
|
|
* variations: <start>,
|
|
* ,<stop>
|
|
* ,
|
|
*/
|
|
start_str = str;
|
|
d = strchr(start_str, ',');
|
|
if (d) {
|
|
*d = '\0';
|
|
++d;
|
|
}
|
|
end_str = d;
|
|
|
|
rc = parse_timestr_sec_nsec(ptime, start_str, end_str);
|
|
|
|
free(str);
|
|
|
|
/* make sure end time is after start time if it was given */
|
|
if (rc == 0 && ptime->end && ptime->end < ptime->start)
|
|
return -EINVAL;
|
|
|
|
pr_debug("start time %" PRIu64 ", ", ptime->start);
|
|
pr_debug("end time %" PRIu64 "\n", ptime->end);
|
|
|
|
return rc;
|
|
}
|
|
|
|
bool perf_time__skip_sample(struct perf_time_interval *ptime, u64 timestamp)
|
|
{
|
|
/* if time is not set don't drop sample */
|
|
if (timestamp == 0)
|
|
return false;
|
|
|
|
/* otherwise compare sample time to time window */
|
|
if ((ptime->start && timestamp < ptime->start) ||
|
|
(ptime->end && timestamp > ptime->end)) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|