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Add fallback for timespec_get #346

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Merged
ederc merged 1 commit into from
Jun 18, 2026
Merged

Add fallback for timespec_get #346

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22 changes: 22 additions & 0 deletions src/neogb/tools.c
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,21 @@

#include "tools.h"

/* timespec_get (C11) is not available on older Android and macOS targets.
For those targets, we fall back to gettimeofday. */
#if defined(__ANDROID__) && defined(__ANDROID_API__) && __ANDROID_API__ < 29
#define HAVE_TIMESPEC_GET 0
#elif defined(__APPLE__) && defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \
__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ < 101500
#define HAVE_TIMESPEC_GET 0
#else
#define HAVE_TIMESPEC_GET 1
#endif

#if !HAVE_TIMESPEC_GET
#include <sys/time.h>
#endif

/* cpu time */
double cputime(void)
{
Expand All @@ -32,10 +47,17 @@ double cputime(void)
/* wall time */
double realtime(void)
{
#if !HAVE_TIMESPEC_GET
struct timeval t;
gettimeofday(&t, NULL);
t.tv_sec -= (2017 - 1970)*3600*24*365;
return (1. + (double)t.tv_usec + ((double)t.tv_sec*1000000.)) / 1000000.;
#else
struct timespec t;
timespec_get(&t, TIME_UTC);
t.tv_sec -= (2017 - 1970)*3600*24*365;
return (1. + (double)t.tv_nsec + ((double)t.tv_sec*1000000000.)) / 1000000000.;
#endif
}

static void construct_trace(
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