static int st_write_event_mapping(void)
{
uint64_t type = TRACE_RECORD_TYPE_MAPPING;
TraceEventIter iter;
TraceEvent *ev;
trace_event_iter_init(&iter, NULL);
while ((ev = trace_event_iter_next(&iter)) != NULL) {
uint64_t id = trace_event_get_id(ev);
const char *name = trace_event_get_name(ev);
uint32_t len = strlen(name);
if (fwrite(&type, sizeof(type), 1, trace_fp) != 1 ||
fwrite(&id, sizeof(id), 1, trace_fp) != 1 ||
fwrite(&len, sizeof(len), 1, trace_fp) != 1 ||
fwrite(name, len, 1, trace_fp) != 1) {
return -1;
}
}
return 0;
}
void trace_event_set_state_dynamic(TraceEvent *ev, bool state)
{
TraceEventID id;
bool state_pre;
assert(trace_event_get_state_static(ev));
id = trace_event_get_id(ev);
/*
* We ignore the "vcpu" property here, since there's no target code. Then
* dstate can only be 1 or 0.
*/
state_pre = trace_events_dstate[id];
if (state_pre != state) {
if (state) {
trace_events_enabled_count++;
trace_events_dstate[id] = 1;
} else {
trace_events_enabled_count--;
trace_events_dstate[id] = 0;
}
}
}
TraceEvent *trace_event_pattern(const char *pat, TraceEvent *ev)
{
assert(pat != NULL);
TraceEventID i;
if (ev == NULL) {
i = -1;
} else {
i = trace_event_get_id(ev);
}
i++;
while (i < trace_event_count()) {
TraceEvent *res = trace_event_id(i);
if (pattern_glob(pat, trace_event_get_name(res))) {
return res;
}
i++;
}
return NULL;
}