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/**
* @file op_parse_event.c
* event parsing
*
* You can have silliness here.
*
* @remark Copyright 2002 OProfile authors
* @remark Read the file COPYING
*
* @author John Levon
* @author Philippe Elie
*/
#include <stdio.h>
#include <stdlib.h>
#include "op_parse_event.h"
#include "op_string.h"
static char * next_part(char const ** str)
{
char const * c;
char * ret;
if ((*str)[0] == '\0')
return NULL;
if ((*str)[0] == ':')
++(*str);
c = *str;
while (*c != '\0' && *c != ':')
++c;
if (c == *str)
return NULL;
ret = op_xstrndup(*str, c - *str);
*str += c - *str;
return ret;
}
static int parse_ulong(char const * str)
{
unsigned long value;
char * end;
value = strtoul(str, &end, 0);
if (end && *end) {
fprintf(stderr, "Invalid event part %s\n", str);
exit(EXIT_FAILURE);
}
return value;
}
size_t parse_events(struct parsed_event * parsed_events, size_t max_events,
char const * const * events)
{
size_t i = 0;
while (events[i]) {
char const * cp = events[i];
char * part = next_part(&cp);
if (i >= max_events) {
fprintf(stderr, "Too many events specified: CPU "
"only has %lu counters.\n",
(unsigned long) max_events);
exit(EXIT_FAILURE);
}
if (!part) {
fprintf(stderr, "Invalid event %s\n", cp);
exit(EXIT_FAILURE);
}
parsed_events[i].name = part;
part = next_part(&cp);
if (!part) {
fprintf(stderr, "Invalid count for event %s\n", events[i]);
exit(EXIT_FAILURE);
}
parsed_events[i].count = parse_ulong(part);
free(part);
parsed_events[i].unit_mask = 0;
part = next_part(&cp);
if (part) {
parsed_events[i].unit_mask_valid = 1;
parsed_events[i].unit_mask = parse_ulong(part);
free(part);
}
parsed_events[i].kernel = 1;
part = next_part(&cp);
if (part) {
parsed_events[i].kernel = parse_ulong(part);
free(part);
}
parsed_events[i].user = 1;
part = next_part(&cp);
if (part) {
parsed_events[i].user = parse_ulong(part);
free(part);
}
++i;
}
return i;
}
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