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This commit is contained in:
Jupeyy 2021-06-15 03:31:56 +02:00
parent 9dfea5511a
commit 3e1d4ad0b3
1 changed files with 7 additions and 51 deletions
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58
src/base/system.cpp
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@ -13,6 +13,8 @@
#include <sys/stat.h> #include <sys/stat.h>
#include <sys/types.h> #include <sys/types.h>
#include <chrono>
#if defined(CONF_WEBSOCKETS) #if defined(CONF_WEBSOCKETS)
#include <engine/shared/websockets.h> #include <engine/shared/websockets.h>
#endif #endif
@ -936,45 +938,13 @@ void set_new_tick(void)
} }
/* ----- time ----- */ /* ----- time ----- */
static_assert(std::chrono::steady_clock::is_steady, "Compiler does not support steady clocks, it might be out of date.");
static_assert(std::chrono::steady_clock::period::den / std::chrono::steady_clock::period::num >= 1000000, "Compiler has a bad timer precision and might be out of date.");
static const std::chrono::time_point<std::chrono::steady_clock> tw_start_time = std::chrono::steady_clock::now();
int64 time_get_impl(void) int64 time_get_impl(void)
{ {
static int64 last = 0; return std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::steady_clock::now() - tw_start_time).count();
{
#if defined(CONF_PLATFORM_MACOS)
static int got_timebase = 0;
mach_timebase_info_data_t timebase;
uint64 time;
uint64 q;
uint64 r;
if(!got_timebase)
{
mach_timebase_info(&timebase);
}
time = mach_absolute_time();
q = time / timebase.denom;
r = time % timebase.denom;
last = q * timebase.numer + r * timebase.numer / timebase.denom;
return last;
#elif defined(CONF_FAMILY_UNIX)
struct timespec spec;
if(clock_gettime(CLOCK_MONOTONIC, &spec) != 0)
{
dbg_msg("clock", "gettime failed: %d", errno);
return 0;
}
last = (int64)spec.tv_sec * (int64)1000000 + (int64)spec.tv_nsec / 1000;
return last;
#elif defined(CONF_FAMILY_WINDOWS)
int64 t;
QueryPerformanceCounter((PLARGE_INTEGER)&t);
if(t < last) /* for some reason, QPC can return values in the past */
return last;
last = t;
return t;
#else
#error not implemented
#endif
}
} }
int64 time_get(void) int64 time_get(void)
@ -991,26 +961,12 @@ int64 time_get(void)
int64 time_freq(void) int64 time_freq(void)
{ {
#if defined(CONF_PLATFORM_MACOS)
return 1000000000;
#elif defined(CONF_FAMILY_UNIX)
return 1000000; return 1000000;
#elif defined(CONF_FAMILY_WINDOWS)
int64 t;
QueryPerformanceFrequency((PLARGE_INTEGER)&t);
return t;
#else
#error not implemented
#endif
} }
int64 time_get_microseconds(void) int64 time_get_microseconds(void)
{ {
#if defined(CONF_FAMILY_WINDOWS)
return (time_get_impl() * (int64)1000000) / time_freq();
#else
return time_get_impl() / (time_freq() / 1000 / 1000); return time_get_impl() / (time_freq() / 1000 / 1000);
#endif
} }
/* ----- network ----- */ /* ----- network ----- */