Usermode/Libraries/libposix.so_src/clocks.c

   1 /*
   2  * Acess2 POSIX Emulation
   3  * - By John Hodge (thePowersGang)
   4  *
   5  * clocks.c
   6  * - clock_* functions
   7  */
   8 #include <acess/sys.h>
   9 #include <time.h>
  10 #include <errno.h>
  11
  12 // === CODE ===
  13 int clock_getres(clockid_t clk_id, struct timespec *res)
  14 {
  15         switch(clk_id)
  16         {
  17         case CLOCK_REALTIME:
  18         case CLOCK_MONOTONIC:
  19                 if( res ) {
  20                         res->tv_sec = 0;
  21                         res->tv_nsec = 1000*1000;
  22                 }
  23                 return 0;
  24         }
  25         errno = EINVAL;
  26         return -1;
  27 }
  28
  29 int clock_gettime(clockid_t clk_id, struct timespec *tp)
  30 {
  31         switch(clk_id)
  32         {
  33         case CLOCK_REALTIME:
  34         case CLOCK_MONOTONIC:
  35                 // TODO: True monotonic clock
  36                 if( tp ) {
  37                         int64_t ts = _SysTimestamp();
  38                         tp->tv_sec = ts / 1000;
  39                         tp->tv_nsec = (ts % 1000) * 1000*1000;
  40                 }
  41                 return 0;
  42         }
  43         errno = EINVAL;
  44         return -1;
  45 }
  46
  47 int clock_settime(clockid_t clk_id, const struct timespec *tp)
  48 {
  49         errno = EPERM;
  50         return -1;
  51 }