void get_lim_data () { _go32_dpmi_meminfo info; unsigned long lim1, lim2; _go32_dpmi_get_free_memory_information (&info); /* DPMI server of Windows NT and its descendants reports in info.available_memory a much lower amount that is really available, which causes bogus "past 95% of memory limit" warnings. Try to overcome that via circumstantial evidence. */ lim1 = info.available_memory; lim2 = info.available_physical_pages; /* DPMI Spec: "Fields that are unavailable will hold -1." */ if ((long)lim1 == -1L) lim1 = 0; if ((long)lim2 == -1L) lim2 = 0; else lim2 *= 4096; /* Surely, the available memory is at least what we have physically available, right? */ if (lim1 >= lim2) lim_data = lim1; else lim_data = lim2; /* Don't believe they will give us more that 0.5 GB. */ if (lim_data > 512U * 1024U * 1024U) lim_data = 512U * 1024U * 1024U; }
u_long _go32_dpmi_remaining_physical_memory() { _go32_dpmi_meminfo info; _go32_dpmi_get_free_memory_information(&info); if (info.available_physical_pages) return info.available_physical_pages * 4096; return info.available_memory; }
static int Sys_Get_Physical_Memory(void) /* FS: From DJGPP tutorial */ { _go32_dpmi_meminfo meminfo; _go32_dpmi_get_free_memory_information(&meminfo); if (meminfo.available_physical_pages != -1) return meminfo.available_physical_pages * 4096; return meminfo.available_memory; }
u_long _go32_dpmi_remaining_virtual_memory() { _go32_dpmi_meminfo info; _go32_dpmi_get_free_memory_information(&info); return info.available_memory; }