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authorSimon Howard2008-05-04 17:09:51 +0000
committerSimon Howard2008-05-04 17:09:51 +0000
commit72680b42095864ec2d4affa55e0831e4d8712b6d (patch)
tree51bb9c6eb792f8d2eb74268758217330a9a8b7c3
parent24c3f6943b226b02a2bbadbe72b3731aa2e90803 (diff)
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Add command line option to disable mmapped WAD I/O.
Subversion-branch: /trunk/chocolate-doom Subversion-revision: 1139
-rw-r--r--src/w_file.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/w_file.c b/src/w_file.c
index 75c2eae4..bd1a99bd 100644
--- a/src/w_file.c
+++ b/src/w_file.c
@@ -28,6 +28,7 @@
#include "doomdef.h"
#include "doomtype.h"
+#include "m_argv.h"
#include "w_file.h"
@@ -57,6 +58,16 @@ wad_file_t *W_OpenFile(char *path)
wad_file_t *result;
int i;
+ //!
+ // Do not use the OS's virtual memory subsystem to map WAD files
+ // directly into memory.
+ //
+
+ if (M_CheckParm("-nommap") > 0)
+ {
+ return stdc_wad_file.OpenFile(path);
+ }
+
// Try all classes in order until we find one that works
result = NULL;