+ /* 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;
+}
+
+unsigned long
+ret_lim_data ()
+{
+ get_lim_data ();
+ return lim_data;