Changeset 52050 in vbox for trunk/src/VBox/Runtime/common/math

Timestamp:

Jul 16, 2014 1:53:24 PM (11 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

95047

Message:

RTMemSafer: Split generic from ring-3 specific page based implementation. Adjusted the ring-3 implementation to use RTMemPage when SUPR3PageAllocEx isn't available, and to separate the real data from the heap metadata to make finding the data just a little bit more difficult.

File:

• trunk/src/VBox/Runtime/common/math/bignum.cpp (modified) (3 diffs)

trunk/src/VBox/Runtime/common/math/bignum.cpp

@@ -118 +118 @@
     Assert(cbNew > cbOld);
 
-    void *pvNew = NULL;
+    void *pvNew;
     if (pBigNum->fSensitive)
-    {
-        int rc = RTMemSaferReallocZEx(cbOld, pBigNum->pauElements, cbNew, &pvNew, RTMEMSAFER_ALLOC_EX_ALLOW_PAGEABLE_BACKING);
-        Assert(VALID_PTR(pvNew) || RT_FAILURE(rc));
-    }
+        pvNew = RTMemSaferReallocZ(cbOld, pBigNum->pauElements, cbNew);
     else
         pvNew = RTMemRealloc(pBigNum->pauElements, cbNew);
@@ -326 +323 @@
         pBigNum->cAllocated = RT_ALIGN_32(pBigNum->cUsed, 4);
         if (pBigNum->fSensitive)
-        {
-            int rc = RTMemSaferAllocZEx((void **)&pBigNum->pauElements, pBigNum->cAllocated * RTBIGNUM_ELEMENT_SIZE,
-                                        RTMEMSAFER_ALLOC_EX_ALLOW_PAGEABLE_BACKING);
-            Assert(VALID_PTR(pBigNum->pauElements) || RT_FAILURE(rc));
-        }
+            pBigNum->pauElements = (RTBIGNUMELEMENT *)RTMemSaferAllocZ(pBigNum->cAllocated * RTBIGNUM_ELEMENT_SIZE);
         else
             pBigNum->pauElements = (RTBIGNUMELEMENT *)RTMemAlloc(pBigNum->cAllocated * RTBIGNUM_ELEMENT_SIZE);
@@ -464 +457 @@
         pBigNum->cAllocated = RT_ALIGN_32(pBigNum->cUsed, 4);
         if (pBigNum->fSensitive)
-        {
-            rc = RTMemSaferAllocZEx((void **)&pBigNum->pauElements, pBigNum->cAllocated * RTBIGNUM_ELEMENT_SIZE,
-                                    RTMEMSAFER_ALLOC_EX_ALLOW_PAGEABLE_BACKING);
-            Assert(VALID_PTR(pBigNum->pauElements) || RT_FAILURE(rc));
-        }
+            pBigNum->pauElements = (RTBIGNUMELEMENT *)RTMemSaferAllocZ(pBigNum->cAllocated * RTBIGNUM_ELEMENT_SIZE);
         else
             pBigNum->pauElements = (RTBIGNUMELEMENT *)RTMemAlloc(pBigNum->cAllocated * RTBIGNUM_ELEMENT_SIZE);