void
mono_process_get_times (gpointer pid, gint64 *start_time, gint64 *user_time, gint64 *kernel_time)
{
if (user_time)
*user_time = mono_process_get_data (pid, MONO_PROCESS_USER_TIME);
if (kernel_time)
*kernel_time = mono_process_get_data (pid, MONO_PROCESS_SYSTEM_TIME);
if (start_time) {
*start_time = 0;
#if USE_SYSCTL && defined(kinfo_starttime_member)
{
KINFO_PROC processi;
if (sysctl_kinfo_proc (pid, &processi))
*start_time = mono_100ns_datetime_from_timeval (processi.kinfo_starttime_member);
}
#endif
if (*start_time == 0) {
static guint64 boot_time = 0;
if (!boot_time)
boot_time = mono_100ns_datetime () - ((guint64)mono_msec_ticks ()) * 10000;
*start_time = boot_time + mono_process_get_data (pid, MONO_PROCESS_ELAPSED);
}
}
}
/* Returns the number of 100ns ticks from unspecified time: this should be monotonic */
gint64
mono_100ns_ticks (void)
{
static LARGE_INTEGER freq;
static UINT64 start_time;
UINT64 cur_time;
LARGE_INTEGER value;
if (!freq.QuadPart) {
if (!QueryPerformanceFrequency (&freq))
return mono_100ns_datetime ();
QueryPerformanceCounter (&value);
start_time = value.QuadPart;
}
QueryPerformanceCounter (&value);
cur_time = value.QuadPart;
/* we use unsigned numbers and return the difference to avoid overflows */
return (cur_time - start_time) * (double)MTICKS_PER_SEC / freq.QuadPart;
}
