void
mi_start (void)
{
const char *type_string;
const char *interval_string;
char *end;
int success = 1;
interval_string = getenv ("_MEMPROF_INTERVAL");
if (!interval_string)
interval_string = "10000";
profile_interval = strtol (interval_string, &end, 10);
if (*interval_string == '\0' || *end != '\0' || profile_interval <= 0) {
mi_debug ("Invalid interval %s\n", interval_string);
profile_interval = 10000;
}
type_string = getenv ("_MEMPROF_SPEED_TYPE");
if (!type_string)
type_string = "cycles";
if (strcmp (type_string, "time") == 0) {
if (start_rtc_timer ())
profile_type = SPEED_PROF_RTC;
else if (start_itimer_timer (ITIMER_REAL))
profile_type = SPEED_PROF_ITIMER;
else
success = 0;
} else if (strcmp (type_string, "cycles") == 0) {
if (mi_perfctr_start (profile_interval))
profile_type = SPEED_PROF_PERFCTR;
else if (start_itimer_timer (ITIMER_PROF))
profile_type = SPEED_PROF_ITIMER;
else
success = 0;
} else {
mi_debug ("Unknown value for _MEMPROF_SPEED_TYPE: %s\n");
_exit (1);
}
if (!success) {
mi_debug ("Couldn't start timer\n");
_exit (1);
}
}
static void
abort_unitialized (const char *call)
{
mi_debug ("MemProf: unexpected library call during initialization: %s\n", call);
abort();
}
