File: clock.c

package info (click to toggle)
picolibc 1.8-1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 31,616 kB
  • sloc: ansic: 312,308; asm: 22,739; perl: 2,414; sh: 1,619; python: 1,019; pascal: 329; exp: 287; makefile: 164; xml: 40; cpp: 10
file content (18 lines) | stat: -rw-r--r-- 410 bytes parent folder | download | duplicates (3) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
/* clock.c
 * Support file for nvptx in newlib.
 */
#include <time.h>

clock_t
clock ()
{
  unsigned long long now;
#if __PTX_SM__ >= 310
  asm volatile("mov.u64 %0, %%globaltimer;" : "=r"(now));
  return now/((1000000000ull)/CLOCKS_PER_SEC);
#else
  asm volatile("mov.u64 %0, %%clock64;" : "=r"(now));
  // Assume a GPU base clock frequency of 1250MHz.
  return now/((1250000000ull)/CLOCKS_PER_SEC);
#endif
}