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Remove win32 specific timer

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This commit is contained in:
James R 2020-11-06 13:34:21 -08:00
parent 4ca994a05b
commit 425b56c288
1 changed files with 0 additions and 98 deletions
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98
src/sdl/i_system.c
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@ -54,11 +54,7 @@ typedef LPVOID (WINAPI *p_MapViewOfFile) (HANDLE, DWORD, DWORD, DWORD, SIZE_T);
#include <fcntl.h>
#endif
#if defined (_WIN32)
DWORD TimeFunction(int requested_frequency);
#else
int TimeFunction(int requested_frequency);
#endif
#include <stdio.h>
#ifdef _WIN32
@ -2044,80 +2040,6 @@ ticcmd_t *I_BaseTiccmd2(void)
return &emptycmd2;
}
#if defined (_WIN32)
static HMODULE winmm = NULL;
static DWORD starttickcount = 0; // hack for win2k time bug
static p_timeGetTime pfntimeGetTime = NULL;
// ---------
// I_GetTime
// Use the High Resolution Timer if available,
// else use the multimedia timer which has 1 millisecond precision on Windowz 95,
// but lower precision on Windows NT
// ---------
DWORD TimeFunction(int requested_frequency)
{
DWORD newtics = 0;
// this var acts as a multiplier if sub-millisecond precision is asked but is not available
int excess_frequency = requested_frequency / 1000;
if (!starttickcount) // high precision timer
{
LARGE_INTEGER currtime; // use only LowPart if high resolution counter is not available
static LARGE_INTEGER basetime = {{0, 0}};
// use this if High Resolution timer is found
static LARGE_INTEGER frequency;
if (!basetime.LowPart)
{
if (!QueryPerformanceFrequency(&frequency))
frequency.QuadPart = 0;
else
QueryPerformanceCounter(&basetime);
}
if (frequency.LowPart && QueryPerformanceCounter(&currtime))
{
newtics = (INT32)((currtime.QuadPart - basetime.QuadPart) * requested_frequency
/ frequency.QuadPart);
}
else if (pfntimeGetTime)
{
currtime.LowPart = pfntimeGetTime();
if (!basetime.LowPart)
basetime.LowPart = currtime.LowPart;
if (requested_frequency > 1000)
newtics = currtime.LowPart - basetime.LowPart * excess_frequency;
else
newtics = (currtime.LowPart - basetime.LowPart)/(1000/requested_frequency);
}
}
else
{
if (requested_frequency > 1000)
newtics = (GetTickCount() - starttickcount) * excess_frequency;
else
newtics = (GetTickCount() - starttickcount)/(1000/requested_frequency);
}
return newtics;
}
static void I_ShutdownTimer(void)
{
pfntimeGetTime = NULL;
if (winmm)
{
p_timeEndPeriod pfntimeEndPeriod = (p_timeEndPeriod)(LPVOID)GetProcAddress(winmm, "timeEndPeriod");
if (pfntimeEndPeriod)
pfntimeEndPeriod(1);
FreeLibrary(winmm);
winmm = NULL;
}
}
#else
//
// I_GetTime
// returns time in 1/TICRATE second tics
@ -2140,7 +2062,6 @@ int TimeFunction(int requested_frequency)
return ticks;
}
#endif
tic_t I_GetTime(void)
{
@ -2157,27 +2078,8 @@ int I_GetTimeMicros(void)
//
void I_StartupTimer(void)
{
#ifdef _WIN32
// for win2k time bug
if (M_CheckParm("-gettickcount"))
{
starttickcount = GetTickCount();
CONS_Printf("%s", M_GetText("Using GetTickCount()\n"));
}
winmm = LoadLibraryA("winmm.dll");
if (winmm)
{
p_timeEndPeriod pfntimeBeginPeriod = (p_timeEndPeriod)(LPVOID)GetProcAddress(winmm, "timeBeginPeriod");
if (pfntimeBeginPeriod)
pfntimeBeginPeriod(1);
pfntimeGetTime = (p_timeGetTime)(LPVOID)GetProcAddress(winmm, "timeGetTime");
}
I_AddExitFunc(I_ShutdownTimer);
#endif
}
void I_Sleep(void)
{
if (cv_sleep.value != -1)