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perf time-utils: Add support for multiple explicit time intervals

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Currently only a single explicit time range is accepted. Add support for
multiple ranges separated by spaces, which requires the string to be
quoted. Update the time utils test accordingly.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190604130017.31207-20-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter
2019-06-04 16:00:17 +03:00
committed by Arnaldo Carvalho de Melo
parent e39a12cbd2
commit a77a05e233
5 changed files with 94 additions and 11 deletions
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74
tools/perf/util/time-utils.c
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@@ -7,6 +7,7 @@
#include <errno.h>
#include <inttypes.h>
#include <math.h>
#include <ctype.h>
#include "perf.h"
#include "debug.h"
@@ -116,6 +117,69 @@ int perf_time__parse_str(struct perf_time_interval *ptime, const char *ostr)
return rc;
}
static int perf_time__parse_strs(struct perf_time_interval *ptime,
const char *ostr, int size)
{
const char *cp;
char *str, *arg, *p;
int i, num = 0, rc = 0;
/* Count the commas */
for (cp = ostr; *cp; cp++)
num += !!(*cp == ',');
if (!num)
return -EINVAL;
BUG_ON(num > size);
str = strdup(ostr);
if (!str)
return -ENOMEM;
/* Split the string and parse each piece, except the last */
for (i = 0, p = str; i < num - 1; i++) {
arg = p;
/* Find next comma, there must be one */
p = strchr(p, ',') + 1;
/* Skip white space */
while (isspace(*p))
p++;
/* Skip the value, must not contain space or comma */
while (*p && !isspace(*p)) {
if (*p++ == ',') {
rc = -EINVAL;
goto out;
}
}
/* Split and parse */
if (*p)
*p++ = 0;
rc = perf_time__parse_str(ptime + i, arg);
if (rc < 0)
goto out;
}
/* Parse the last piece */
rc = perf_time__parse_str(ptime + i, p);
if (rc < 0)
goto out;
/* Check there is no overlap */
for (i = 0; i < num - 1; i++) {
if (ptime[i].end >= ptime[i + 1].start) {
rc = -EINVAL;
goto out;
}
}
rc = num;
out:
free(str);
return rc;
}
static int parse_percent(double *pcnt, char *str)
{
char *c, *endptr;
@@ -424,15 +488,13 @@ int perf_time__parse_for_ranges(const char *time_str,
time_str,
session->evlist->first_sample_time,
session->evlist->last_sample_time);
if (num < 0)
goto error_invalid;
} else {
if (perf_time__parse_str(ptime_range, time_str))
goto error_invalid;
num = 1;
num = perf_time__parse_strs(ptime_range, time_str, size);
}
if (num < 0)
goto error_invalid;
*range_size = size;
*range_num = num;
*ranges = ptime_range;