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#include "fmdsp_platform_info.h"
#include <stdint.h>
#include <limits.h>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
static struct {
HANDLE currproc;
uint64_t lastall;
uint64_t lastcpu;
uint64_t lastfpstime;
} g;
int fmdsp_cpu_usage(void) {
if (!g.currproc) g.currproc = GetCurrentProcess();
FILETIME ft_sys, ft_creat, ft_exit, ft_kern, ft_user;
GetSystemTimeAsFileTime(&ft_sys);
GetProcessTimes(g.currproc, &ft_creat, &ft_exit, &ft_kern, &ft_user);
uint64_t all = ft_sys.dwHighDateTime;
all <<= 32;
all |= ft_sys.dwLowDateTime;
uint64_t kern = ft_kern.dwHighDateTime;
kern <<= 32;
kern |= ft_kern.dwLowDateTime;
uint64_t user = ft_user.dwHighDateTime;
user <<= 32;
user |= ft_user.dwLowDateTime;
uint64_t cpu = kern + user;
uint64_t alld = all - g.lastall;
uint64_t cpud = cpu - g.lastcpu;
int percentage = 0;
if (alld) percentage = cpud * 100 / alld;
g.lastall = all;
g.lastcpu = cpu;
if (!g.lastall) return 0;
if (percentage > INT_MAX) percentage = INT_MAX;
if (percentage < 0) percentage = 0;
return percentage;
}
int fmdsp_fps_30(void) {
FILETIME ft;
GetSystemTimeAsFileTime(&ft);
uint64_t time = ft.dwHighDateTime;
time <<= 32;
time |= ft.dwLowDateTime;
uint64_t fps = 0;
if (g.lastfpstime) {
uint64_t diff = time - g.lastfpstime;
if (diff) {
fps = 30ull * 10000000ull / diff;
}
}
g.lastfpstime = time;
if (fps > INT_MAX) fps = INT_MAX;
return fps;
}
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