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Fix bug 'negative values' in GET_TIME_MS()

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This commit is contained in:
jonny_jr9 2023-12-12 17:12:07 +01:00
parent d8952223f4
commit aaf4eb398a
2 changed files with 23 additions and 8 deletions
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2
include/common.h
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@ -50,4 +50,4 @@
// macro to get time in milliseconds
#define GET_TIME_MS() get_current_time()
// defined in common.c due to differences with windows and other systems
uint64_t get_current_time();
int64_t get_current_time();

29
src/common.c
View File

@ -6,21 +6,36 @@
#include "common.h"
//============================
//==== get_current_time() ====
//============================
// Function that returns current time in milliseconds (can be used on windows and other systems)
uint64_t get_current_time() {
#ifdef _WIN32
int64_t get_current_time()
{
#ifdef WIN32
//=== WINDOWS ===
FILETIME ft;
LARGE_INTEGER li;
// Get the amount of 100 nano seconds intervals elapsed since January 1, 1601 (UTC) and copy it to a LARGE_INTEGER structure.
GetSystemTimeAsFileTime(&ft);
ULARGE_INTEGER uli;
uli.LowPart = ft.dwLowDateTime;
uli.HighPart = ft.dwHighDateTime;
return uli.QuadPart / 10000; // convert 100-nanoseconds to milliseconds
li.LowPart = ft.dwLowDateTime;
li.HighPart = ft.dwHighDateTime;
uint64_t ret = li.QuadPart;
ret -= 116444736000000000LL; // Convert from file time to UNIX epoch time.
ret /= 10000; // From 100 nano seconds (10^-7) to 1 millisecond (10^-3) intervals
return ret;
#else
//=== LINUX ===
struct timeval tv;
gettimeofday(&tv, NULL);
return (uint64_t)tv.tv_sec * 1000 + tv.tv_usec / 1000; // convert microseconds to milliseconds
uint64_t ret = tv.tv_usec;
// Convert from micro seconds (10^-6) to milliseconds (10^-3)
ret /= 1000;
// Adds the seconds (10^0) after converting them to milliseconds (10^-3)
ret += (tv.tv_sec * 1000);
return ret;
#endif
}