Changeset 21455 for trunk/src/gdi32/dibsect.cpp

Timestamp:

Sep 23, 2010, 7:54:50 PM (15 years ago)

Author:

ydario

Message:

Cannot commit already committed memory, check status before calling DosSetMem.

File:

• trunk/src/gdi32/dibsect.cpp (modified) (1 diff)

trunk/src/gdi32/dibsect.cpp

@@ -1079 +1079 @@
     else
     if(!fWriteAccess) {
-        APIRET rc = DosSetMem(lpBase, dwSize, PAG_READ|PAG_COMMIT);
+        ULONG  ulMemFlags = 0;
+        ULONG  ulMemCommit = PAG_COMMIT;
+        ULONG  ulMemSize  = 0;
+        APIRET rc = DosQueryMem(lpBase, &ulMemSize, &ulMemFlags);
+        if(rc) {
+            dprintf(("DosQueryMem failed with %d!!", rc));
+            DebugInt3();
+            return FALSE;
+        }
+        dprintf(("DosQueryMem size %d, flags %x", ulMemSize, ulMemFlags));
+        // YD cannot commit memory two times!
+        if ((ulMemFlags & PAG_COMMIT) == PAG_COMMIT)
+            ulMemCommit = 0;
+        rc = DosSetMem(lpBase, dwSize, PAG_READ|ulMemCommit);
         if(rc) {
             dprintf(("DosSetMem failed with %d!!", rc));