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[common] time: prevent possible div by zero on windows

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This commit is contained in:
Geoffrey McRae 2023-11-12 06:56:37 +11:00
parent 96b5892c31
commit 7bea919352
1 changed files with 12 additions and 3 deletions
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15
common/include/common/time.h
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@ -39,13 +39,19 @@ typedef struct LGTimer LGTimer;
static inline uint64_t microtime(void)
{
#if defined(_WIN32)
static LARGE_INTEGER freq = { .QuadPart = 0LL };
if (!freq.QuadPart)
static unsigned long div = 0;
if (div == 0)
{
LARGE_INTEGER freq = { .QuadPart = 0LL };
QueryPerformanceFrequency(&freq);
div = freq.QuadPart / 1000000LL;
if(div == 0)
abort();
}
LARGE_INTEGER time;
QueryPerformanceCounter(&time);
return time.QuadPart / (freq.QuadPart / 1000000LL);
return time.QuadPart / div;
#else
struct timespec time;
clock_gettime(CLOCK_MONOTONIC, &time);
@ -76,6 +82,9 @@ static inline uint64_t nanotime(void)
{
LARGE_INTEGER freq = { .QuadPart = 0LL };
QueryPerformanceFrequency(&freq);
if (freq.QuadPart == 0)
abort();
multiplier = 1e9 / freq.QuadPart;
}