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another faux time-since-boot implementation for Microseconds() for clock_gettime and other posix

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rakslice
2024-12-29 15:16:33 -08:00
parent 96e7f8566c
commit 2a1353896f
1 changed files with 20 additions and 7 deletions
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BasiliskII/src/Unix/timer_unix.cpp
+20 -7
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@@ -47,6 +47,19 @@ static inline void mach_current_time(tm_time_t &t) {
clock_get_time(host_clock, (mach_timespec_t *)&t);
}
#else
tm_time_t host_clock;
static bool host_clock_inited = false;
static void host_uptime(tm_time_t & t) {
if (!host_clock_inited) {
timer_current_time(host_clock);
host_clock_inited = true;
}
tm_time_t cur;
timer_current_time(cur);
timer_sub_time(t, cur, host_clock);
}
#endif
@@ -61,14 +74,14 @@ void Microseconds(uint32 &hi, uint32 &lo)
tm_time_t t;
mach_current_time(t);
uint64 tl = (uint64)t.tv_sec * 1000000 + t.tv_nsec / 1000;
#elif defined(HAVE_CLOCK_GETTIME)
struct timespec t;
clock_gettime(CLOCK_REALTIME, &t);
uint64 tl = (uint64)t.tv_sec * 1000000 + t.tv_nsec / 1000;
#else
struct timeval t;
gettimeofday(&t, NULL);
uint64 tl = (uint64)t.tv_sec * 1000000 + t.tv_usec;
tm_time_t t;
host_uptime(t);
#if defined(HAVE_CLOCK_GETTIME)
uint64 tl = (uint64)t.tv_sec * 1000000 + t.tv_nsec / 1000;
#else
uint64 tl = (uint64)t.tv_sec * 1000000 + t.tv_usec;
#endif
#endif
hi = tl >> 32;
lo = tl;