# HG changeset patch
# User Markus Mützel <markus.muetzel@gmx.de>
# Date 1683475999 -7200
# Node ID 66ecc0d4d6ce9e0e363d54ff99edfe4c3315b6b7
# Parent  f7206b6577c295af99d29ba0f3b2d1c4f55d9c79
memory: Fix execution on Cygwin.

* scripts/miscellaneous/memory.m: Check if field "Cached" exists before using
it.

diff -r f7206b6577c2 -r 66ecc0d4d6ce scripts/miscellaneous/memory.m
--- a/scripts/miscellaneous/memory.m	Wed May 03 20:43:36 2023 +0200
+++ b/scripts/miscellaneous/memory.m	Sun May 07 18:13:19 2023 +0200
@@ -183,7 +183,13 @@
     else
       ## On kernels from before 2014 MemAvailable is not present.
       ## This is a rough estimate that can be used instead.
-      available_ram = (meminfo.MemFree + meminfo.Cached) * kiB;
+      available_ram = meminfo.MemFree * kiB;
+      if (isfield (meminfo, "Cached"))
+        ## Some platforms don't support "Cached" (e.g., Cygwin).
+        ## That makes the result even more unreliable. But it might be better
+        ## than nothing.
+        available_ram += meminfo.Cached * kiB;
+      endif
     endif
     free_swap = meminfo.SwapFree * kiB;
     used_ram = status.VmRSS * kiB;