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Viewing changes to src/util/os_time.c

  • Committer: mmach
  • Date: 2023-11-02 21:31:35 UTC
  • Revision ID: netbit73@gmail.com-20231102213135-18d4tzh7tj0uz752
2023-11-02 22:11:57

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src/util/os_time.c
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#include "os_time.h"
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#include "detect_os.h"
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#include "c11/time.h"
 
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#include "util/u_atomic.h"
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#if DETECT_OS_UNIX
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int64_t
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os_time_get_nano(void)
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{
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#if DETECT_OS_LINUX || DETECT_OS_BSD
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   struct timespec tv;
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   clock_gettime(CLOCK_MONOTONIC, &tv);
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   return tv.tv_nsec + tv.tv_sec*INT64_C(1000000000);
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#elif DETECT_OS_UNIX
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   struct timeval tv;
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   gettimeofday(&tv, NULL);
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   return tv.tv_usec*INT64_C(1000) + tv.tv_sec*INT64_C(1000000000);
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#elif DETECT_OS_WINDOWS
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   LARGE_INTEGER frequency;
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   LARGE_INTEGER counter;
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   int64_t secs, nanosecs;
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   QueryPerformanceFrequency(&frequency);
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   QueryPerformanceCounter(&counter);
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   /* Compute seconds and nanoseconds parts separately to
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    * reduce severity of precision loss.
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    */
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   secs = counter.QuadPart / frequency.QuadPart;
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   nanosecs = (counter.QuadPart % frequency.QuadPart) * INT64_C(1000000000)
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      / frequency.QuadPart;
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   return secs*INT64_C(1000000000) + nanosecs;
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#else
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#error Unsupported OS
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#endif
 
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   struct timespec ts;
 
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   timespec_get(&ts, TIME_MONOTONIC);
 
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   return ts.tv_nsec + ts.tv_sec*INT64_C(1000000000);
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}
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