37 lines
732 B
C
37 lines
732 B
C
// RUN: %clang -pthread %s -Wl,-as-needed -o %t && %run %t
|
|
//
|
|
// UNSUPPORTED: darwin, target={{.*solaris.*}}
|
|
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
#include <assert.h>
|
|
#include <pthread.h>
|
|
|
|
long cpu_ns() {
|
|
clockid_t clk;
|
|
struct timespec ts;
|
|
int res = clock_getcpuclockid(getpid(), &clk);
|
|
assert(!res);
|
|
res = clock_gettime(clk, &ts);
|
|
assert(!res);
|
|
return ts.tv_nsec;
|
|
}
|
|
|
|
long th_cpu_ns() {
|
|
clockid_t clk;
|
|
struct timespec ts;
|
|
int res = pthread_getcpuclockid(pthread_self(), &clk);
|
|
assert(!res);
|
|
res = clock_gettime(clk, &ts);
|
|
assert(!res);
|
|
return ts.tv_nsec;
|
|
}
|
|
|
|
int main() {
|
|
long cpuns = cpu_ns();
|
|
asm volatile ("" :: "r"(cpuns));
|
|
cpuns = th_cpu_ns();
|
|
asm volatile ("" :: "r"(cpuns));
|
|
return 0;
|
|
}
|