correct access for virtual

[wxWidgets.git] / src / unix / utilsunx.cpp

diff --git a/src/unix/utilsunx.cpp b/src/unix/utilsunx.cpp
index d5b98d59affca7e9745e1f87a5b9241813b60bfe..67a97b734a772385b86ca09736ea3b15a391d27e 100644 (file)
--- a/src/unix/utilsunx.cpp
+++ b/src/unix/utilsunx.cpp
@@ -913,7 +913,7 @@ wxOperatingSystemId wxGetOsVersion(int *verMaj, int *verMin)
     // get OS version
     int major, minor;
     wxString release = wxGetCommandOutput(wxT("uname -r"));
-    if ( !release.empty() && wxSscanf(release, "%d.%d", &major, &minor) != 2 )
+    if ( !release.empty() && wxSscanf(release, wxT("%d.%d"), &major, &minor) != 2 )
     {
         // unrecognized uname string format
         major =
@@ -960,8 +960,31 @@ wxMemorySize wxGetFreeMemory()
         char buf[1024];
         if ( fgets(buf, WXSIZEOF(buf), fp) && fgets(buf, WXSIZEOF(buf), fp) )
         {
-            long memTotal, memUsed;
-            sscanf(buf, "Mem: %ld %ld %ld", &memTotal, &memUsed, &memFree);
+            // /proc/meminfo changed its format in kernel 2.6
+            if ( wxPlatformInfo().CheckOSVersion(2, 6) )
+            {
+                unsigned long cached, buffers;
+                sscanf(buf, "MemFree: %ld", &memFree);
+
+                fgets(buf, WXSIZEOF(buf), fp);
+                sscanf(buf, "Buffers: %lu", &buffers);
+
+                fgets(buf, WXSIZEOF(buf), fp);
+                sscanf(buf, "Cached: %lu", &cached);
+
+                // add to "MemFree" also the "Buffers" and "Cached" values as
+                // free(1) does as otherwise the value never makes sense: for
+                // kernel 2.6 it's always almost 0
+                memFree += buffers + cached;
+
+                // values here are always expressed in kB and we want bytes
+                memFree *= 1024;
+            }
+            else // Linux 2.4 (or < 2.6, anyhow)
+            {
+                long memTotal, memUsed;
+                sscanf(buf, "Mem: %ld %ld %ld", &memTotal, &memUsed, &memFree);
+            }
         }
 
         fclose(fp);