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2026-05-27 23:03:00 +08:00

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# In linux
```
#include <pthread.h>
#include <stdio.h>
#include <time.h>
#include <stdint.h>
static long long GetThreadCpuTimeNs() {
struct timespec t;
if (clock_gettime(CLOCK_THREAD_CPUTIME_ID, &t)) {
perror("clock_gettime");
return 0;
}
return t.tv_nsec;
}
```
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