void Sys_Shutdown (void)
{
if (!isDedicated)
dos_restoreintr(9);
if (unlockmem)
{
dos_unlockmem (&start_of_memory, end_of_memory - (int)&start_of_memory);
dos_unlockmem (quakeparms.membase, quakeparms.memsize);
}
}
/*
================
Sys_PageInProgram
walks the text, data, and bss to make sure it's all paged in so that the
actual physical memory detected by Sys_GetMemory is correct.
================
*/
static void Sys_PageInProgram(void)
{
int i, j;
end_of_memory = (int)sbrk(0);
if (lockmem)
{
if (dos_lockmem ((void *)&start_of_memory,
end_of_memory - (int)&start_of_memory))
Sys_Error ("Couldn't lock text and data");
}
if (lockunlockmem)
{
dos_unlockmem((void *)&start_of_memory,
end_of_memory - (int)&start_of_memory);
printf ("Locked and unlocked %d Mb image\n",
(end_of_memory - (int)&start_of_memory) / 0x100000);
}
else if (lockmem)
{
printf ("Locked %d Mb image\n",
(end_of_memory - (int)&start_of_memory) / 0x100000);
}
else
{
printf ("Loaded %d Mb image\n",
(end_of_memory - (int)&start_of_memory) / 0x100000);
}
// touch the entire image, doing the 16-page skip so Win95 doesn't think we're
// trying to page ourselves in
for (j=0 ; j<4 ; j++)
{
for(i=(int)&start_of_memory ; i<(end_of_memory - 16 * 0x1000) ; i += 4)
{
sys_checksum += *(int *)i;
sys_checksum += *(int *)(i + 16 * 0x1000);
}
}
/* FS: Report total amount available and save it for later if we run /memstats */
physicalMemStart = (Sys_Get_Physical_Memory() / 0x100000);
virtualMemStart = (_go32_dpmi_remaining_virtual_memory() / 0x100000);
printf("%d Mb available for Q2DOS.\n", physicalMemStart);
printf("%lu Virtual Mb available for Q2DOS.\n", virtualMemStart);
}
void Sys_Quit (void)
{
if(!dedicated || !dedicated->value)
dos_restoreintr(9); /* FS: Give back the keyboard */
if (unlockmem)
{
dos_unlockmem (&start_of_memory,
end_of_memory - (int)&start_of_memory);
}
Sys_SetTextMode();
__dpmi_free_physical_address_mapping(&info);
__djgpp_nearptr_disable(); /* FS: Everyone else is a master DOS DPMI programmer. Pretty sure CWSDPMI is already taking care of this... */
exit (0);
}
/*
================
Sys_PageInProgram
walks the text, data, and bss to make sure it's all paged in so that the
actual physical memory detected by Sys_GetMemory is correct.
================
*/
void Sys_PageInProgram(void)
{
int i, j;
end_of_memory = (int)sbrk(0);
if (lockmem)
{
if (dos_lockmem((void *)&start_of_memory,
end_of_memory - (int)&start_of_memory))
{
Sys_Error("Couldn't lock text and data");
}
}
if (lockunlockmem)
{
dos_unlockmem((void *)&start_of_memory,
end_of_memory - (int)&start_of_memory);
printf("Locked and unlocked %d Mb image\n",
(end_of_memory - (int)&start_of_memory) / 0x100000);
}
else if (lockmem)
{
printf("Locked %d Mb image\n",
(end_of_memory - (int)&start_of_memory) / 0x100000);
}
else
{
printf("Loaded %d Mb image\n",
(end_of_memory - (int)&start_of_memory) / 0x100000);
}
// touch the entire image, doing the 16-page skip so Win95 doesn't think we're
// trying to page ourselves in
for (j=0 ; j<4 ; j++)
{
for (i=(int)&start_of_memory ; i<(end_of_memory - 16 * 0x1000) ; i += 4)
{
sys_checksum += *(int *)i;
sys_checksum += *(int *)(i + 16 * 0x1000);
}
}
}