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