int NaClNanosleep(struct nacl_abi_timespec const *req,
struct nacl_abi_timespec *rem) {
DWORD sleep_ms;
uint64_t resolution;
DWORD resolution_gap = 0;
UNREFERENCED_PARAMETER(rem);
/* round up from ns resolution to ms resolution */
sleep_ms = (req->tv_sec * NACL_MILLIS_PER_UNIT +
NACL_UNIT_CONVERT_ROUND(req->tv_nsec, NACL_NANOS_PER_MILLI));
/* round up to minimum timer resolution */
resolution = NaClTimerResolutionNanoseconds();
NaClLog(4, "Resolution %"NACL_PRId64"\n", resolution);
if (0 != resolution) {
resolution = NACL_UNIT_CONVERT_ROUND(resolution, NACL_NANOS_PER_MILLI);
resolution_gap = (DWORD) (sleep_ms % resolution);
if (0 != resolution_gap) {
resolution_gap = (DWORD) (resolution - resolution_gap);
}
}
NaClLog(4, "Resolution gap %d\n", resolution_gap);
sleep_ms += resolution_gap;
NaClLog(4, "Sleep(%d)\n", sleep_ms);
Sleep(sleep_ms);
return 0;
}
int NaClClockGetRes(nacl_clockid_t clk_id,
struct nacl_abi_timespec *res) {
int rv = -NACL_ABI_EINVAL;
uint64_t t_resolution_ns;
if (!g_NaClClock_is_initialized) {
NaClLog(LOG_FATAL,
"NaClClockGetRes invoked without successful NaClClockInit\n");
}
switch (clk_id) {
case NACL_CLOCK_REALTIME:
case NACL_CLOCK_MONOTONIC:
t_resolution_ns = NaClTimerResolutionNanoseconds();
res->tv_sec = (nacl_abi_time_t) (t_resolution_ns / NACL_NANOS_PER_UNIT);
res->tv_nsec = (int32_t) (t_resolution_ns % NACL_NANOS_PER_UNIT);
/*
* very surprised if res->tv_sec != 0, since that would be a
* rather low resolution timer!
*/
rv = 0;
break;
case NACL_CLOCK_PROCESS_CPUTIME_ID:
case NACL_CLOCK_THREAD_CPUTIME_ID:
break;
}
return rv;
}
