sync with trunk r46493

[reactos.git] / dll / win32 / ole32 / stg_bigblockfile.c

diff --git a/dll/win32/ole32/stg_bigblockfile.c b/dll/win32/ole32/stg_bigblockfile.c
index 19151b9..77abbf6 100644 (file)
--- a/dll/win32/ole32/stg_bigblockfile.c
+++ b/dll/win32/ole32/stg_bigblockfile.c
@@ -63,19 +63,10 @@ WINE_DEFAULT_DEBUG_CHANNEL(storage);
 /* We map in PAGE_SIZE-sized chunks. Must be a multiple of 4096. */
 #define PAGE_SIZE       131072
 
-#define BLOCKS_PER_PAGE (PAGE_SIZE / BIG_BLOCK_SIZE)
-
 /* We keep a list of recently-discarded pages. This controls the
  * size of that list. */
 #define MAX_VICTIM_PAGES 16
 
-/* This structure provides one bit for each block in a page.
- * Use BIGBLOCKFILE_{Test,Set,Clear}Bit to manipulate it. */
-typedef struct
-{
-    unsigned int bits[BLOCKS_PER_PAGE / (CHAR_BIT * sizeof(unsigned int))];
-} BlockBits;
-
 /***
  * This structure identifies the paged that are mapped
  * from the file and their position in memory. It is
@@ -96,16 +87,12 @@ struct MappedPage
     DWORD  mapped_bytes;
     LPVOID lpBytes;
     LONG   refcnt;
-
-    BlockBits readable_blocks;
-    BlockBits writable_blocks;
 };
 
 struct BigBlockFile
 {
     BOOL fileBased;
     ULARGE_INTEGER filesize;
-    ULONG blocksize;
     HANDLE hfile;
     HANDLE hfilemap;
     DWORD flProtect;
@@ -123,39 +110,6 @@ struct BigBlockFile
  * pass expressions with side effects. */
 #define ROUND_UP(a, b) ((((a) + (b) - 1)/(b))*(b))
 
-/***********************************************************
- * Blockbits functions.
- */
-static inline BOOL BIGBLOCKFILE_TestBit(const BlockBits *bb,
-                                       unsigned int index)
-{
-    unsigned int array_index = index / (CHAR_BIT * sizeof(unsigned int));
-    unsigned int bit_index = index % (CHAR_BIT * sizeof(unsigned int));
-
-    return bb->bits[array_index] & (1 << bit_index);
-}
-
-static inline void BIGBLOCKFILE_SetBit(BlockBits *bb, unsigned int index)
-{
-    unsigned int array_index = index / (CHAR_BIT * sizeof(unsigned int));
-    unsigned int bit_index = index % (CHAR_BIT * sizeof(unsigned int));
-
-    bb->bits[array_index] |= (1 << bit_index);
-}
-
-static inline void BIGBLOCKFILE_ClearBit(BlockBits *bb, unsigned int index)
-{
-    unsigned int array_index = index / (CHAR_BIT * sizeof(unsigned int));
-    unsigned int bit_index = index % (CHAR_BIT * sizeof(unsigned int));
-
-    bb->bits[array_index] &= ~(1 << bit_index);
-}
-
-static inline void BIGBLOCKFILE_Zero(BlockBits *bb)
-{
-    memset(bb->bits, 0, sizeof(bb->bits));
-}
-
 /******************************************************************************
  *      BIGBLOCKFILE_FileInit
  *
@@ -302,9 +256,6 @@ static MappedPage *BIGBLOCKFILE_CreatePage(BigBlockFile *This, ULONG page_index)
         return NULL;
     }
 
-    BIGBLOCKFILE_Zero(&page->readable_blocks);
-    BIGBLOCKFILE_Zero(&page->writable_blocks);
-
     return page;
 }
 
@@ -328,9 +279,6 @@ static void * BIGBLOCKFILE_GetMappedView(
        if (page)
        {
            This->num_victim_pages--;
-
-           BIGBLOCKFILE_Zero(&page->readable_blocks);
-           BIGBLOCKFILE_Zero(&page->writable_blocks);
        }
     }
 
@@ -709,7 +657,7 @@ static HRESULT ImplBIGBLOCKFILE_WriteAt(
  * and the blocks in use list.
  */
 BigBlockFile *BIGBLOCKFILE_Construct(HANDLE hFile, ILockBytes* pLkByt, DWORD openFlags,
-                                     ULONG blocksize, BOOL fileBased)
+                                     BOOL fileBased)
 {
     BigBlockFile *This;
 
@@ -720,7 +668,6 @@ BigBlockFile *BIGBLOCKFILE_Construct(HANDLE hFile, ILockBytes* pLkByt, DWORD ope
 
     This->fileBased = fileBased;
     This->flProtect = BIGBLOCKFILE_GetProtectMode(openFlags);
-    This->blocksize = blocksize;
 
     This->maplist = NULL;
     This->victimhead = NULL;
@@ -863,31 +810,19 @@ static HRESULT BIGBLOCKFILE_GetSize(BigBlockFile *This, ULARGE_INTEGER *size)
 }
 
 /******************************************************************************
- *      BIGBLOCKFILE_EnsureExists
+ *      BIGBLOCKFILE_Expand
  *
- * Grows the file if necessary to make sure the block is valid.
+ * Grows the file to the specified size if necessary.
  */
-HRESULT BIGBLOCKFILE_EnsureExists(BigBlockFile *This, ULONG index)
+HRESULT BIGBLOCKFILE_Expand(BigBlockFile *This, ULARGE_INTEGER newSize)
 {
     ULARGE_INTEGER size;
     HRESULT hr;
 
-    /* Block index starts at -1 translate to zero based index */
-    if (index == 0xffffffff)
-        index = 0;
-    else
-        index++;
-
     hr = BIGBLOCKFILE_GetSize(This, &size);
     if(FAILED(hr)) return hr;
 
-    /* make sure that the block physically exists */
-    if ((This->blocksize * (index + 1)) > size.QuadPart)
-    {
-        ULARGE_INTEGER newSize;
-
-        newSize.QuadPart = This->blocksize * (index + 1);
+    if (newSize.QuadPart > size.QuadPart)
         hr = BIGBLOCKFILE_SetSize(This, newSize);
-    }
     return hr;
 }