| /* |
| * Win32 heap functions |
| * |
| * Copyright 1996 Alexandre Julliard |
| */ |
| |
| #define NO_TRANSITION_TYPES /* This file is Win32-clean */ |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include "windows.h" |
| #include "debugger.h" |
| #include "kernel32.h" /* for CRITICAL_SECTION */ |
| #include "selectors.h" |
| #include "winbase.h" |
| #include "winerror.h" |
| #include "winnt.h" |
| #include "stddebug.h" |
| #include "debug.h" |
| |
| /* Note: the heap data structures are based on what Pietrek describes in his |
| * book 'Windows 95 System Programming Secrets'. The layout is not exactly |
| * the same, but could be easily adapted if it turns out some programs |
| * require it. |
| */ |
| |
| typedef struct tagARENA_INUSE |
| { |
| DWORD size; /* Block size; must be the first field */ |
| WORD threadId; /* Allocating thread id */ |
| WORD magic; /* Magic number */ |
| DWORD callerEIP; /* EIP of caller upon allocation */ |
| } ARENA_INUSE; |
| |
| typedef struct tagARENA_FREE |
| { |
| DWORD size; /* Block size; must be the first field */ |
| WORD threadId; /* Freeing thread id */ |
| WORD magic; /* Magic number */ |
| struct tagARENA_FREE *next; /* Next free arena */ |
| struct tagARENA_FREE *prev; /* Prev free arena */ |
| } ARENA_FREE; |
| |
| #define ARENA_FLAG_FREE 0x00000001 /* flags OR'ed with arena size */ |
| #define ARENA_FLAG_PREV_FREE 0x00000002 |
| #define ARENA_SIZE_MASK 0xfffffffc |
| #define ARENA_INUSE_MAGIC 0x4842 /* Value for arena 'magic' field */ |
| #define ARENA_FREE_MAGIC 0x4846 /* Value for arena 'magic' field */ |
| |
| #define ARENA_INUSE_FILLER 0x55 |
| #define ARENA_FREE_FILLER 0xaa |
| |
| #define HEAP_NB_FREE_LISTS 4 /* Number of free lists */ |
| |
| /* Max size of the blocks on the free lists */ |
| static const DWORD HEAP_freeListSizes[HEAP_NB_FREE_LISTS] = |
| { |
| 0x20, 0x80, 0x200, 0xffffffff |
| }; |
| |
| typedef struct |
| { |
| DWORD size; |
| ARENA_FREE arena; |
| } FREE_LIST_ENTRY; |
| |
| struct tagHEAP; |
| |
| typedef struct tagSUBHEAP |
| { |
| DWORD size; /* Size of the whole sub-heap */ |
| DWORD commitSize; /* Committed size of the sub-heap */ |
| DWORD headerSize; /* Size of the heap header */ |
| struct tagSUBHEAP *next; /* Next sub-heap */ |
| struct tagHEAP *heap; /* Main heap structure */ |
| DWORD magic; /* Magic number */ |
| WORD selector; /* Selector for HEAP_WINE_SEGPTR heaps */ |
| } SUBHEAP; |
| |
| #define SUBHEAP_MAGIC ((DWORD)('S' | ('U'<<8) | ('B'<<16) | ('H'<<24))) |
| |
| typedef struct tagHEAP |
| { |
| SUBHEAP subheap; /* First sub-heap */ |
| struct tagHEAP *next; /* Next heap for this process */ |
| FREE_LIST_ENTRY freeList[HEAP_NB_FREE_LISTS]; /* Free lists */ |
| CRITICAL_SECTION critSection; /* Critical section for serialization */ |
| DWORD flags; /* Heap flags */ |
| DWORD magic; /* Magic number */ |
| } HEAP; |
| |
| #define HEAP_MAGIC ((DWORD)('H' | ('E'<<8) | ('A'<<16) | ('P'<<24))) |
| |
| #define HEAP_DEF_SIZE 0x110000 /* Default heap size = 1Mb + 64Kb */ |
| #define HEAP_MIN_BLOCK_SIZE (8+sizeof(ARENA_FREE)) /* Min. heap block size */ |
| |
| |
| /*********************************************************************** |
| * HEAP_Dump |
| */ |
| void HEAP_Dump( HEAP *heap ) |
| { |
| int i; |
| SUBHEAP *subheap; |
| char *ptr; |
| |
| printf( "Heap: %08lx\n", (DWORD)heap ); |
| printf( "Next: %08lx Sub-heaps: %08lx", |
| (DWORD)heap->next, (DWORD)&heap->subheap ); |
| subheap = &heap->subheap; |
| while (subheap->next) |
| { |
| printf( " -> %08lx", (DWORD)subheap->next ); |
| subheap = subheap->next; |
| } |
| |
| printf( "\nFree lists:\n Block Stat Size Id\n" ); |
| for (i = 0; i < HEAP_NB_FREE_LISTS; i++) |
| printf( "%08lx free %08lx %04x prev=%08lx next=%08lx\n", |
| (DWORD)&heap->freeList[i].arena, heap->freeList[i].arena.size, |
| heap->freeList[i].arena.threadId, |
| (DWORD)heap->freeList[i].arena.prev, |
| (DWORD)heap->freeList[i].arena.next ); |
| |
| subheap = &heap->subheap; |
| while (subheap) |
| { |
| DWORD freeSize = 0, usedSize = 0, arenaSize = subheap->headerSize; |
| printf( "\n\nSub-heap %08lx: size=%08lx committed=%08lx\n", |
| (DWORD)subheap, subheap->size, subheap->commitSize ); |
| |
| printf( "\n Block Stat Size Id\n" ); |
| ptr = (char*)subheap + subheap->headerSize; |
| while (ptr < (char *)subheap + subheap->size) |
| { |
| if (*(DWORD *)ptr & ARENA_FLAG_FREE) |
| { |
| ARENA_FREE *pArena = (ARENA_FREE *)ptr; |
| printf( "%08lx free %08lx %04x prev=%08lx next=%08lx\n", |
| (DWORD)pArena, pArena->size & ARENA_SIZE_MASK, |
| pArena->threadId, (DWORD)pArena->prev, |
| (DWORD)pArena->next); |
| ptr += sizeof(*pArena) + (pArena->size & ARENA_SIZE_MASK); |
| arenaSize += sizeof(ARENA_FREE); |
| freeSize += pArena->size & ARENA_SIZE_MASK; |
| } |
| else if (*(DWORD *)ptr & ARENA_FLAG_PREV_FREE) |
| { |
| ARENA_INUSE *pArena = (ARENA_INUSE *)ptr; |
| printf( "%08lx Used %08lx %04x back=%08lx EIP=%08lx\n", |
| (DWORD)pArena, pArena->size & ARENA_SIZE_MASK, |
| pArena->threadId, *((DWORD *)pArena - 1), |
| pArena->callerEIP ); |
| ptr += sizeof(*pArena) + (pArena->size & ARENA_SIZE_MASK); |
| arenaSize += sizeof(ARENA_INUSE); |
| usedSize += pArena->size & ARENA_SIZE_MASK; |
| } |
| else |
| { |
| ARENA_INUSE *pArena = (ARENA_INUSE *)ptr; |
| printf( "%08lx used %08lx %04x EIP=%08lx\n", |
| (DWORD)pArena, pArena->size & ARENA_SIZE_MASK, |
| pArena->threadId, pArena->callerEIP ); |
| ptr += sizeof(*pArena) + (pArena->size & ARENA_SIZE_MASK); |
| arenaSize += sizeof(ARENA_INUSE); |
| usedSize += pArena->size & ARENA_SIZE_MASK; |
| } |
| } |
| printf( "\nTotal: Size=%08lx Committed=%08lx Free=%08lx Used=%08lx Arenas=%08lx (%ld%%)\n\n", |
| subheap->size, subheap->commitSize, freeSize, usedSize, |
| arenaSize, (arenaSize * 100) / subheap->size ); |
| subheap = subheap->next; |
| } |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_GetPtr |
| */ |
| static HEAP *HEAP_GetPtr( HANDLE32 heap ) |
| { |
| HEAP *heapPtr = (HEAP *)heap; |
| if (!heapPtr || (heapPtr->magic != HEAP_MAGIC)) |
| { |
| fprintf( stderr, "Invalid heap %08x!\n", heap ); |
| SetLastError( ERROR_INVALID_HANDLE ); |
| return NULL; |
| } |
| if (debugging_heap && !HeapValidate( heap, 0, NULL )) |
| { |
| HEAP_Dump( heapPtr ); |
| DEBUG_EnterDebugger(); |
| SetLastError( ERROR_INVALID_HANDLE ); |
| return NULL; |
| } |
| return heapPtr; |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_InsertFreeBlock |
| * |
| * Insert a free block into the free list. |
| */ |
| static void HEAP_InsertFreeBlock( HEAP *heap, ARENA_FREE *pArena ) |
| { |
| FREE_LIST_ENTRY *pEntry = heap->freeList; |
| while (pEntry->size < pArena->size) pEntry++; |
| pArena->size |= ARENA_FLAG_FREE; |
| pArena->next = pEntry->arena.next; |
| pArena->next->prev = pArena; |
| pArena->prev = &pEntry->arena; |
| pEntry->arena.next = pArena; |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_FindSubHeap |
| * |
| * Find the sub-heap containing a given address. |
| */ |
| static SUBHEAP *HEAP_FindSubHeap( HEAP *heap, LPCVOID ptr ) |
| { |
| SUBHEAP *sub = &heap->subheap; |
| while (sub) |
| { |
| if (((char *)ptr >= (char *)sub) && |
| ((char *)ptr < (char *)sub + sub->size)) return sub; |
| sub = sub->next; |
| } |
| return NULL; |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_Commit |
| * |
| * Make sure the heap storage is committed up to (not including) ptr. |
| */ |
| static BOOL32 HEAP_Commit( SUBHEAP *subheap, void *ptr ) |
| { |
| DWORD size = (DWORD)((char *)ptr - (char *)subheap); |
| size = (size + 0xfff) & 0xfffff000; /* Align size on a page boundary */ |
| if (size > subheap->size) size = subheap->size; |
| if (size <= subheap->commitSize) return TRUE; |
| if (!VirtualAlloc( (char *)subheap + subheap->commitSize, |
| size - subheap->commitSize, MEM_COMMIT, |
| PAGE_EXECUTE_READWRITE)) |
| { |
| fprintf( stderr, "HEAP_Commit: could not commit %08lx bytes at %08lx for heap %08lx\n", |
| size - subheap->commitSize, |
| (DWORD)((char *)subheap + subheap->commitSize), |
| (DWORD)subheap->heap ); |
| return FALSE; |
| } |
| subheap->commitSize = size; |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_Decommit |
| * |
| * If possible, decommit the heap storage from (including) 'ptr'. |
| */ |
| static BOOL32 HEAP_Decommit( SUBHEAP *subheap, void *ptr ) |
| { |
| DWORD size = (DWORD)((char *)ptr - (char *)subheap); |
| size = (size + 0xfff) & 0xfffff000; /* Align size on a page boundary */ |
| if (size >= subheap->commitSize) return TRUE; |
| if (!VirtualFree( (char *)subheap + subheap->commitSize, |
| size - subheap->commitSize, MEM_DECOMMIT )) |
| { |
| fprintf( stderr, "HEAP_Decommit: could not decommit %08lx bytes at %08lx for heap %08lx\n", |
| size - subheap->commitSize, |
| (DWORD)((char *)subheap + subheap->commitSize), |
| (DWORD)subheap->heap ); |
| return FALSE; |
| } |
| subheap->commitSize = size; |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_CreateFreeBlock |
| * |
| * Create a free block at a specified address. 'size' is the size of the |
| * whole block, including the new arena. |
| */ |
| static void HEAP_CreateFreeBlock( SUBHEAP *subheap, void *ptr, DWORD size ) |
| { |
| ARENA_FREE *pFree; |
| |
| /* Create a free arena */ |
| |
| pFree = (ARENA_FREE *)ptr; |
| pFree->threadId = GetCurrentTask(); |
| pFree->magic = ARENA_FREE_MAGIC; |
| |
| /* If debugging, erase the freed block content */ |
| |
| if (debugging_heap) |
| { |
| char *pEnd = (char *)ptr + size; |
| if (pEnd > (char *)subheap + subheap->commitSize) |
| pEnd = (char *)subheap + subheap->commitSize; |
| if (pEnd > (char *)(pFree + 1)) |
| memset( pFree + 1, ARENA_FREE_FILLER, pEnd - (char *)(pFree + 1) ); |
| } |
| |
| /* Check if next block is free also */ |
| |
| if (((char *)ptr + size < (char *)subheap + subheap->size) && |
| (*(DWORD *)((char *)ptr + size) & ARENA_FLAG_FREE)) |
| { |
| /* Remove the next arena from the free list */ |
| ARENA_FREE *pNext = (ARENA_FREE *)((char *)ptr + size); |
| pNext->next->prev = pNext->prev; |
| pNext->prev->next = pNext->next; |
| size += (pNext->size & ARENA_SIZE_MASK) + sizeof(*pNext); |
| if (debugging_heap) |
| memset( pNext, ARENA_FREE_FILLER, sizeof(ARENA_FREE) ); |
| } |
| |
| /* Set the next block PREV_FREE flag and pointer */ |
| |
| if ((char *)ptr + size < (char *)subheap + subheap->size) |
| { |
| DWORD *pNext = (DWORD *)((char *)ptr + size); |
| *pNext |= ARENA_FLAG_PREV_FREE; |
| *(ARENA_FREE **)(pNext - 1) = pFree; |
| } |
| |
| /* Last, insert the new block into the free list */ |
| |
| pFree->size = size - sizeof(*pFree); |
| HEAP_InsertFreeBlock( subheap->heap, pFree ); |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_MakeInUseBlockFree |
| * |
| * Turn an in-use block into a free block. Can also decommit the end of |
| * the heap, and possibly even free the sub-heap altogether. |
| */ |
| static void HEAP_MakeInUseBlockFree( SUBHEAP *subheap, ARENA_INUSE *pArena ) |
| { |
| ARENA_FREE *pFree; |
| DWORD size = (pArena->size & ARENA_SIZE_MASK) + sizeof(*pArena); |
| |
| /* Check if we can merge with previous block */ |
| |
| if (pArena->size & ARENA_FLAG_PREV_FREE) |
| { |
| pFree = *((ARENA_FREE **)pArena - 1); |
| size += (pFree->size & ARENA_SIZE_MASK) + sizeof(ARENA_FREE); |
| /* Remove it from the free list */ |
| pFree->next->prev = pFree->prev; |
| pFree->prev->next = pFree->next; |
| } |
| else pFree = (ARENA_FREE *)pArena; |
| |
| /* Create a free block */ |
| |
| HEAP_CreateFreeBlock( subheap, pFree, size ); |
| size = (pFree->size & ARENA_SIZE_MASK) + sizeof(ARENA_FREE); |
| if ((char *)pFree + size < (char *)subheap + subheap->size) |
| return; /* Not the last block, so nothing more to do */ |
| |
| /* Free the whole sub-heap if it's empty and not the original one */ |
| |
| if (((char *)pFree == (char *)subheap + subheap->headerSize) && |
| (subheap != &subheap->heap->subheap)) |
| { |
| SUBHEAP *pPrev = &subheap->heap->subheap; |
| /* Remove the free block from the list */ |
| pFree->next->prev = pFree->prev; |
| pFree->prev->next = pFree->next; |
| /* Remove the subheap from the list */ |
| while (pPrev && (pPrev->next != subheap)) pPrev = pPrev->next; |
| if (pPrev) pPrev->next = subheap->next; |
| /* Free the memory */ |
| subheap->magic = 0; |
| if (subheap->selector) FreeSelector( subheap->selector ); |
| VirtualFree( subheap, subheap->size, MEM_DECOMMIT ); |
| VirtualFree( subheap, 0, MEM_RELEASE ); |
| return; |
| } |
| |
| /* Decommit the end of the heap */ |
| |
| HEAP_Decommit( subheap, pFree + 1 ); |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_ShrinkBlock |
| * |
| * Shrink an in-use block. |
| */ |
| static void HEAP_ShrinkBlock(SUBHEAP *subheap, ARENA_INUSE *pArena, DWORD size) |
| { |
| if ((pArena->size & ARENA_SIZE_MASK) >= size + HEAP_MIN_BLOCK_SIZE) |
| { |
| HEAP_CreateFreeBlock( subheap, (char *)(pArena + 1) + size, |
| (pArena->size & ARENA_SIZE_MASK) - size ); |
| pArena->size = (pArena->size & ~ARENA_SIZE_MASK) | size; |
| } |
| else |
| { |
| /* Turn off PREV_FREE flag in next block */ |
| char *pNext = (char *)(pArena + 1) + (pArena->size & ARENA_SIZE_MASK); |
| if (pNext < (char *)subheap + subheap->size) |
| *(DWORD *)pNext &= ~ARENA_FLAG_PREV_FREE; |
| } |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_CreateSubHeap |
| * |
| * Create a sub-heap of the given size. |
| */ |
| static SUBHEAP *HEAP_CreateSubHeap( DWORD flags, DWORD commitSize, |
| DWORD totalSize ) |
| { |
| SUBHEAP *subheap; |
| WORD selector = 0; |
| |
| /* Round-up sizes on a 64K boundary */ |
| |
| if (flags & HEAP_WINE_SEGPTR) |
| { |
| totalSize = commitSize = 0x10000; /* Only 64K at a time for SEGPTRs */ |
| } |
| else |
| { |
| totalSize = (totalSize + 0xffff) & 0xffff0000; |
| commitSize = (commitSize + 0xffff) & 0xffff0000; |
| if (!commitSize) commitSize = 0x10000; |
| if (totalSize < commitSize) totalSize = commitSize; |
| } |
| |
| /* Allocate the memory block */ |
| |
| if (!(subheap = VirtualAlloc( NULL, totalSize, |
| MEM_RESERVE, PAGE_EXECUTE_READWRITE ))) |
| { |
| fprintf( stderr, "HEAP_CreateSubHeap: could not VirtualAlloc %08lx bytes\n", |
| totalSize ); |
| return NULL; |
| } |
| if (!VirtualAlloc(subheap, commitSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE)) |
| { |
| fprintf( stderr, "HEAP_CreateSubHeap: could not commit %08lx bytes for sub-heap %08lx\n", |
| commitSize, (DWORD)subheap ); |
| VirtualFree( subheap, 0, MEM_RELEASE ); |
| return NULL; |
| } |
| |
| /* Allocate a selector if needed */ |
| |
| if (flags & HEAP_WINE_SEGPTR) |
| { |
| selector = SELECTOR_AllocBlock( subheap, totalSize, |
| (flags & HEAP_WINE_CODESEG) ? SEGMENT_CODE : SEGMENT_DATA, |
| (flags & HEAP_WINE_CODESEG) != 0, FALSE ); |
| if (!selector) |
| { |
| fprintf( stderr, "HEAP_CreateSubHeap: could not allocate selector\n" ); |
| VirtualFree( subheap, 0, MEM_RELEASE ); |
| return NULL; |
| } |
| } |
| |
| /* Fill the sub-heap structure */ |
| |
| subheap->size = totalSize; |
| subheap->commitSize = commitSize; |
| subheap->headerSize = sizeof(*subheap); |
| subheap->next = NULL; |
| subheap->heap = NULL; |
| subheap->magic = SUBHEAP_MAGIC; |
| subheap->selector = selector; |
| return subheap; |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_FindFreeBlock |
| * |
| * Find a free block at least as large as the requested size, and make sure |
| * the requested size is committed. |
| */ |
| static ARENA_FREE *HEAP_FindFreeBlock( HEAP *heap, DWORD size, |
| SUBHEAP **ppSubHeap ) |
| { |
| SUBHEAP *subheap; |
| ARENA_FREE *pArena; |
| FREE_LIST_ENTRY *pEntry = heap->freeList; |
| |
| /* Find a suitable free list, and in it find a block large enough */ |
| |
| while (pEntry->size < size) pEntry++; |
| pArena = pEntry->arena.next; |
| while (pArena != &heap->freeList[0].arena) |
| { |
| if (pArena->size > size) |
| { |
| subheap = HEAP_FindSubHeap( heap, pArena ); |
| if (!HEAP_Commit( subheap, (char *)pArena + sizeof(ARENA_INUSE) |
| + size + HEAP_MIN_BLOCK_SIZE)) |
| return NULL; |
| *ppSubHeap = subheap; |
| return pArena; |
| } |
| |
| pArena = pArena->next; |
| } |
| |
| /* If no block was found, attempt to grow the heap */ |
| |
| if (!(heap->flags & HEAP_GROWABLE)) |
| { |
| fprintf( stderr, "HEAP_FindFreeBlock: Not enough space in heap %08lx for %08lx bytes\n", |
| (DWORD)heap, size ); |
| return NULL; |
| } |
| size += sizeof(SUBHEAP) + sizeof(ARENA_FREE); |
| if (!(subheap = HEAP_CreateSubHeap( heap->flags, size, |
| MAX( HEAP_DEF_SIZE, size ) ))) |
| return NULL; |
| |
| /* Insert the new sub-heap in the list */ |
| |
| subheap->heap = heap; |
| subheap->next = heap->subheap.next; |
| heap->subheap.next = subheap; |
| size = subheap->size; |
| dprintf_heap( stddeb, "HEAP_FindFreeBlock: created new sub-heap %08lx of %08lx bytes for heap %08lx\n", |
| (DWORD)subheap, size, (DWORD)heap ); |
| |
| HEAP_CreateFreeBlock( subheap, subheap + 1, size - sizeof(*subheap) ); |
| *ppSubHeap = subheap; |
| return (ARENA_FREE *)(subheap + 1); |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_IsValidArenaPtr |
| * |
| * Check that the pointer is inside the range possible for arenas. |
| */ |
| static BOOL32 HEAP_IsValidArenaPtr( HEAP *heap, void *ptr ) |
| { |
| int i; |
| SUBHEAP *subheap = HEAP_FindSubHeap( heap, ptr ); |
| if (!subheap) return FALSE; |
| if ((char *)ptr >= (char *)subheap + subheap->headerSize) return TRUE; |
| if (subheap != &heap->subheap) return FALSE; |
| for (i = 0; i < HEAP_NB_FREE_LISTS; i++) |
| if (ptr == (void *)&heap->freeList[i].arena) return TRUE; |
| return FALSE; |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_ValidateFreeArena |
| */ |
| static BOOL32 HEAP_ValidateFreeArena( SUBHEAP *subheap, ARENA_FREE *pArena ) |
| { |
| char *heapEnd = (char *)subheap + subheap->size; |
| |
| /* Check magic number */ |
| if (pArena->magic != ARENA_FREE_MAGIC) |
| { |
| fprintf( stderr, "Heap %08lx: invalid free arena magic for %08lx\n", |
| (DWORD)subheap->heap, (DWORD)pArena ); |
| return FALSE; |
| } |
| /* Check size flags */ |
| if (!(pArena->size & ARENA_FLAG_FREE) || |
| (pArena->size & ARENA_FLAG_PREV_FREE)) |
| { |
| fprintf( stderr, "Heap %08lx: bad flags %lx for free arena %08lx\n", |
| (DWORD)subheap->heap, pArena->size & ~ARENA_SIZE_MASK, (DWORD)pArena ); |
| } |
| /* Check arena size */ |
| if ((char *)(pArena + 1) + (pArena->size & ARENA_SIZE_MASK) > heapEnd) |
| { |
| fprintf( stderr, "Heap %08lx: bad size %08lx for free arena %08lx\n", |
| (DWORD)subheap->heap, (DWORD)pArena->size & ARENA_SIZE_MASK, (DWORD)pArena ); |
| return FALSE; |
| } |
| /* Check that next pointer is valid */ |
| if (!HEAP_IsValidArenaPtr( subheap->heap, pArena->next )) |
| { |
| fprintf( stderr, "Heap %08lx: bad next ptr %08lx for arena %08lx\n", |
| (DWORD)subheap->heap, (DWORD)pArena->next, (DWORD)pArena ); |
| return FALSE; |
| } |
| /* Check that next arena is free */ |
| if (!(pArena->next->size & ARENA_FLAG_FREE) || |
| (pArena->next->magic != ARENA_FREE_MAGIC)) |
| { |
| fprintf( stderr, "Heap %08lx: next arena %08lx invalid for %08lx\n", |
| (DWORD)subheap->heap, (DWORD)pArena->next, (DWORD)pArena ); |
| return FALSE; |
| } |
| /* Check that prev pointer is valid */ |
| if (!HEAP_IsValidArenaPtr( subheap->heap, pArena->prev )) |
| { |
| fprintf( stderr, "Heap %08lx: bad prev ptr %08lx for arena %08lx\n", |
| (DWORD)subheap->heap, (DWORD)pArena->prev, (DWORD)pArena ); |
| return FALSE; |
| } |
| /* Check that prev arena is free */ |
| if (!(pArena->prev->size & ARENA_FLAG_FREE) || |
| (pArena->prev->magic != ARENA_FREE_MAGIC)) |
| { |
| fprintf( stderr, "Heap %08lx: prev arena %08lx invalid for %08lx\n", |
| (DWORD)subheap->heap, (DWORD)pArena->prev, (DWORD)pArena ); |
| return FALSE; |
| } |
| /* Check that next block has PREV_FREE flag */ |
| if ((char *)(pArena + 1) + (pArena->size & ARENA_SIZE_MASK) < heapEnd) |
| { |
| if (!(*(DWORD *)((char *)(pArena + 1) + |
| (pArena->size & ARENA_SIZE_MASK)) & ARENA_FLAG_PREV_FREE)) |
| { |
| fprintf( stderr, "Heap %08lx: free arena %08lx next block has no PREV_FREE flag\n", |
| (DWORD)subheap->heap, (DWORD)pArena ); |
| return FALSE; |
| } |
| /* Check next block back pointer */ |
| if (*((ARENA_FREE **)((char *)(pArena + 1) + |
| (pArena->size & ARENA_SIZE_MASK)) - 1) != pArena) |
| { |
| fprintf( stderr, "Heap %08lx: arena %08lx has wrong back ptr %08lx\n", |
| (DWORD)subheap->heap, (DWORD)pArena, |
| *((DWORD *)((char *)(pArena+1)+ (pArena->size & ARENA_SIZE_MASK)) - 1)); |
| return FALSE; |
| } |
| } |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_ValidateInUseArena |
| */ |
| static BOOL32 HEAP_ValidateInUseArena( SUBHEAP *subheap, ARENA_INUSE *pArena ) |
| { |
| char *heapEnd = (char *)subheap + subheap->size; |
| |
| /* Check magic number */ |
| if (pArena->magic != ARENA_INUSE_MAGIC) |
| { |
| fprintf( stderr, "Heap %08lx: invalid in-use arena magic for %08lx\n", |
| (DWORD)subheap->heap, (DWORD)pArena ); |
| return FALSE; |
| } |
| /* Check size flags */ |
| if (pArena->size & ARENA_FLAG_FREE) |
| { |
| fprintf( stderr, "Heap %08lx: bad flags %lx for in-use arena %08lx\n", |
| (DWORD)subheap->heap, pArena->size & ~ARENA_SIZE_MASK, (DWORD)pArena ); |
| } |
| /* Check arena size */ |
| if ((char *)(pArena + 1) + (pArena->size & ARENA_SIZE_MASK) > heapEnd) |
| { |
| fprintf( stderr, "Heap %08lx: bad size %08lx for in-use arena %08lx\n", |
| (DWORD)subheap->heap, (DWORD)pArena->size & ARENA_SIZE_MASK, (DWORD)pArena ); |
| return FALSE; |
| } |
| /* Check next arena PREV_FREE flag */ |
| if (((char *)(pArena + 1) + (pArena->size & ARENA_SIZE_MASK) < heapEnd) && |
| (*(DWORD *)((char *)(pArena + 1) + (pArena->size & ARENA_SIZE_MASK)) & ARENA_FLAG_PREV_FREE)) |
| { |
| fprintf( stderr, "Heap %08lx: in-use arena %08lx next block has PREV_FREE flag\n", |
| (DWORD)subheap->heap, (DWORD)pArena ); |
| return FALSE; |
| } |
| /* Check prev free arena */ |
| if (pArena->size & ARENA_FLAG_PREV_FREE) |
| { |
| ARENA_FREE *pPrev = *((ARENA_FREE **)pArena - 1); |
| /* Check prev pointer */ |
| if (!HEAP_IsValidArenaPtr( subheap->heap, pPrev )) |
| { |
| fprintf(stderr, "Heap %08lx: bad back ptr %08lx for arena %08lx\n", |
| (DWORD)subheap->heap, (DWORD)pPrev, (DWORD)pArena ); |
| return FALSE; |
| } |
| /* Check that prev arena is free */ |
| if (!(pPrev->size & ARENA_FLAG_FREE) || |
| (pPrev->magic != ARENA_FREE_MAGIC)) |
| { |
| fprintf( stderr, "Heap %08lx: prev arena %08lx invalid for in-use %08lx\n", |
| (DWORD)subheap->heap, (DWORD)pPrev, (DWORD)pArena ); |
| return FALSE; |
| } |
| /* Check that prev arena is really the previous block */ |
| if ((char *)(pPrev + 1) + (pPrev->size & ARENA_SIZE_MASK) != (char *)pArena) |
| { |
| fprintf( stderr, "Heap %08lx: prev arena %08lx is not prev for in-use %08lx\n", |
| (DWORD)subheap->heap, (DWORD)pPrev, (DWORD)pArena ); |
| return FALSE; |
| } |
| } |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_IsInsideHeap |
| * |
| * Check whether the pointer is to a block inside a given heap. |
| */ |
| int HEAP_IsInsideHeap( HANDLE32 heap, DWORD flags, LPCVOID ptr ) |
| { |
| HEAP *heapPtr = HEAP_GetPtr( heap ); |
| SUBHEAP *subheap; |
| int ret; |
| |
| /* Validate the parameters */ |
| |
| if (!heapPtr) return 0; |
| flags |= heapPtr->flags; |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapLock( heap ); |
| ret = (((subheap = HEAP_FindSubHeap( heapPtr, ptr )) != NULL) && |
| (((char *)ptr >= (char *)subheap + subheap->headerSize |
| + sizeof(ARENA_INUSE)))); |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapUnlock( heap ); |
| return ret; |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_GetSegptr |
| * |
| * Transform a linear pointer into a SEGPTR. The pointer must have been |
| * allocated from a HEAP_WINE_SEGPTR heap. |
| */ |
| SEGPTR HEAP_GetSegptr( HANDLE32 heap, DWORD flags, LPCVOID ptr ) |
| { |
| HEAP *heapPtr = HEAP_GetPtr( heap ); |
| SUBHEAP *subheap; |
| SEGPTR ret; |
| |
| /* Validate the parameters */ |
| |
| if (!heapPtr) return 0; |
| flags |= heapPtr->flags; |
| if (!(flags & HEAP_WINE_SEGPTR)) |
| { |
| fprintf( stderr, "HEAP_GetSegptr: heap %08x is not a SEGPTR heap\n", |
| heap ); |
| return 0; |
| } |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapLock( heap ); |
| |
| /* Get the subheap */ |
| |
| if (!(subheap = HEAP_FindSubHeap( heapPtr, ptr ))) |
| { |
| fprintf( stderr, "HEAP_GetSegptr: %p is not inside heap %08x\n", |
| ptr, heap ); |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapUnlock( heap ); |
| return 0; |
| } |
| |
| /* Build the SEGPTR */ |
| |
| ret = PTR_SEG_OFF_TO_SEGPTR(subheap->selector, (DWORD)ptr-(DWORD)subheap); |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapUnlock( heap ); |
| return ret; |
| } |
| |
| |
| /*********************************************************************** |
| * HeapCreate (KERNEL32.336) |
| */ |
| HANDLE32 HeapCreate( DWORD flags, DWORD initialSize, DWORD maxSize ) |
| { |
| int i; |
| HEAP *heap; |
| SUBHEAP *subheap; |
| FREE_LIST_ENTRY *pEntry; |
| |
| /* Allocate the heap block */ |
| |
| if (!maxSize) |
| { |
| maxSize = HEAP_DEF_SIZE; |
| flags |= HEAP_GROWABLE; |
| } |
| if (!(subheap = HEAP_CreateSubHeap( flags, initialSize, maxSize ))) |
| { |
| SetLastError( ERROR_OUTOFMEMORY ); |
| return 0; |
| } |
| |
| /* Fill the heap structure */ |
| |
| heap = (HEAP *)subheap; |
| subheap->heap = heap; |
| subheap->headerSize = sizeof(HEAP); |
| heap->next = NULL; |
| heap->flags = flags; |
| heap->magic = HEAP_MAGIC; |
| InitializeCriticalSection( &heap->critSection ); |
| |
| /* Build the free lists */ |
| |
| for (i = 0, pEntry = heap->freeList; i < HEAP_NB_FREE_LISTS; i++, pEntry++) |
| { |
| pEntry->size = HEAP_freeListSizes[i]; |
| pEntry->arena.size = 0 | ARENA_FLAG_FREE; |
| pEntry->arena.next = i < HEAP_NB_FREE_LISTS-1 ? |
| &heap->freeList[i+1].arena : &heap->freeList[0].arena; |
| pEntry->arena.prev = i ? &heap->freeList[i-1].arena : |
| &heap->freeList[HEAP_NB_FREE_LISTS-1].arena; |
| pEntry->arena.threadId = 0; |
| pEntry->arena.magic = ARENA_FREE_MAGIC; |
| } |
| |
| /* Create the first free block */ |
| |
| HEAP_CreateFreeBlock( subheap, heap + 1, subheap->size - sizeof(*heap) ); |
| |
| /* We are done */ |
| |
| SetLastError( 0 ); |
| return (HANDLE32)heap; |
| } |
| |
| |
| /*********************************************************************** |
| * HeapDestroy (KERNEL32.337) |
| */ |
| BOOL32 HeapDestroy( HANDLE32 heap ) |
| { |
| HEAP *heapPtr = HEAP_GetPtr( heap ); |
| SUBHEAP *subheap; |
| |
| dprintf_heap( stddeb, "HeapDestroy: %08x\n", heap ); |
| if (!heapPtr) return FALSE; |
| |
| DeleteCriticalSection( &heapPtr->critSection ); |
| subheap = &heapPtr->subheap; |
| while (subheap) |
| { |
| SUBHEAP *next = subheap->next; |
| if (subheap->selector) FreeSelector( subheap->selector ); |
| VirtualFree( subheap, subheap->commitSize, MEM_DECOMMIT ); |
| VirtualFree( subheap, 0, MEM_RELEASE ); |
| subheap = next; |
| } |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * HeapAlloc (KERNEL32.334) |
| */ |
| LPVOID HeapAlloc( HANDLE32 heap, DWORD flags, DWORD size ) |
| { |
| ARENA_FREE *pArena; |
| ARENA_INUSE *pInUse; |
| SUBHEAP *subheap; |
| HEAP *heapPtr = HEAP_GetPtr( heap ); |
| |
| /* Validate the parameters */ |
| |
| if (!heapPtr) return NULL; |
| flags &= HEAP_GENERATE_EXCEPTIONS | HEAP_NO_SERIALIZE | HEAP_ZERO_MEMORY; |
| flags |= heapPtr->flags; |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapLock( heap ); |
| size = (size + 3) & ~3; |
| if (size < HEAP_MIN_BLOCK_SIZE) size = HEAP_MIN_BLOCK_SIZE; |
| |
| /* Locate a suitable free block */ |
| |
| if (!(pArena = HEAP_FindFreeBlock( heapPtr, size, &subheap ))) |
| { |
| dprintf_heap( stddeb, "HeapAlloc(%08x,%08lx,%08lx): returning NULL\n", |
| heap, flags, size ); |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapUnlock( heap ); |
| SetLastError( ERROR_OUTOFMEMORY ); |
| return NULL; |
| } |
| |
| /* Remove the arena from the free list */ |
| |
| pArena->next->prev = pArena->prev; |
| pArena->prev->next = pArena->next; |
| |
| /* Build the in-use arena */ |
| |
| pInUse = (ARENA_INUSE *)pArena; |
| pInUse->size = (pInUse->size & ~ARENA_FLAG_FREE) |
| + sizeof(ARENA_FREE) - sizeof(ARENA_INUSE); |
| pInUse->callerEIP = *((DWORD *)&heap - 1); /* hack hack */ |
| pInUse->threadId = GetCurrentTask(); |
| pInUse->magic = ARENA_INUSE_MAGIC; |
| |
| /* Shrink the block */ |
| |
| HEAP_ShrinkBlock( subheap, pInUse, size ); |
| |
| if (flags & HEAP_ZERO_MEMORY) memset( pInUse + 1, 0, size ); |
| else if (debugging_heap) memset( pInUse + 1, ARENA_INUSE_FILLER, size ); |
| |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapUnlock( heap ); |
| SetLastError( 0 ); |
| |
| dprintf_heap( stddeb, "HeapAlloc(%08x,%08lx,%08lx): returning %08lx\n", |
| heap, flags, size, (DWORD)(pInUse + 1) ); |
| return (LPVOID)(pInUse + 1); |
| } |
| |
| |
| /*********************************************************************** |
| * HeapFree (KERNEL32.338) |
| */ |
| BOOL32 HeapFree( HANDLE32 heap, DWORD flags, LPVOID ptr ) |
| { |
| ARENA_INUSE *pInUse; |
| SUBHEAP *subheap; |
| HEAP *heapPtr = HEAP_GetPtr( heap ); |
| |
| /* Validate the parameters */ |
| |
| if (!heapPtr) return FALSE; |
| flags &= HEAP_NO_SERIALIZE; |
| flags |= heapPtr->flags; |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapLock( heap ); |
| if (!HeapValidate( heap, HEAP_NO_SERIALIZE, ptr )) |
| { |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapUnlock( heap ); |
| SetLastError( ERROR_INVALID_PARAMETER ); |
| dprintf_heap( stddeb, "HeapFree(%08x,%08lx,%08lx): returning FALSE\n", |
| heap, flags, (DWORD)ptr ); |
| return FALSE; |
| } |
| |
| /* Turn the block into a free block */ |
| |
| pInUse = (ARENA_INUSE *)ptr - 1; |
| subheap = HEAP_FindSubHeap( heapPtr, pInUse ); |
| HEAP_MakeInUseBlockFree( subheap, pInUse ); |
| |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapUnlock( heap ); |
| SetLastError( 0 ); |
| |
| dprintf_heap( stddeb, "HeapFree(%08x,%08lx,%08lx): returning TRUE\n", |
| heap, flags, (DWORD)ptr ); |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * HeapReAlloc (KERNEL32.340) |
| */ |
| LPVOID HeapReAlloc( HANDLE32 heap, DWORD flags, LPVOID ptr, DWORD size ) |
| { |
| ARENA_INUSE *pArena; |
| DWORD oldSize; |
| HEAP *heapPtr; |
| SUBHEAP *subheap; |
| |
| if (!ptr) return HeapAlloc( heap, flags, size ); /* FIXME: correct? */ |
| if (!(heapPtr = HEAP_GetPtr( heap ))) return FALSE; |
| |
| /* Validate the parameters */ |
| |
| flags &= HEAP_GENERATE_EXCEPTIONS | HEAP_NO_SERIALIZE | HEAP_ZERO_MEMORY | |
| HEAP_REALLOC_IN_PLACE_ONLY; |
| flags |= heapPtr->flags; |
| size = (size + 3) & ~3; |
| if (size < HEAP_MIN_BLOCK_SIZE) size = HEAP_MIN_BLOCK_SIZE; |
| |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapLock( heap ); |
| if (!HeapValidate( heap, HEAP_NO_SERIALIZE, ptr )) |
| { |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapUnlock( heap ); |
| SetLastError( ERROR_INVALID_PARAMETER ); |
| dprintf_heap( stddeb, "HeapReAlloc(%08x,%08lx,%08lx,%08lx): returning NULL\n", |
| heap, flags, (DWORD)ptr, size ); |
| return NULL; |
| } |
| |
| /* Check if we need to grow the block */ |
| |
| pArena = (ARENA_INUSE *)ptr - 1; |
| pArena->threadId = GetCurrentTask(); |
| subheap = HEAP_FindSubHeap( heapPtr, pArena ); |
| oldSize = (pArena->size & ARENA_SIZE_MASK); |
| if (size > oldSize) |
| { |
| char *pNext = (char *)(pArena + 1) + oldSize; |
| if ((pNext < (char *)subheap + subheap->size) && |
| (*(DWORD *)pNext & ARENA_FLAG_FREE) && |
| (oldSize + (*(DWORD *)pNext & ARENA_SIZE_MASK) + sizeof(ARENA_FREE) >= size)) |
| { |
| /* The next block is free and large enough */ |
| ARENA_FREE *pFree = (ARENA_FREE *)pNext; |
| pFree->next->prev = pFree->prev; |
| pFree->prev->next = pFree->next; |
| pArena->size += (pFree->size & ARENA_SIZE_MASK) + sizeof(*pFree); |
| if (!HEAP_Commit( subheap, (char *)pArena + sizeof(ARENA_INUSE) |
| + size + HEAP_MIN_BLOCK_SIZE)) |
| { |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapUnlock( heap ); |
| SetLastError( ERROR_OUTOFMEMORY ); |
| return NULL; |
| } |
| HEAP_ShrinkBlock( subheap, pArena, size ); |
| } |
| else /* Do it the hard way */ |
| { |
| ARENA_FREE *pNew; |
| ARENA_INUSE *pInUse; |
| SUBHEAP *newsubheap; |
| |
| if ((flags & HEAP_REALLOC_IN_PLACE_ONLY) || |
| !(pNew = HEAP_FindFreeBlock( heapPtr, size, &newsubheap ))) |
| { |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapUnlock( heap ); |
| SetLastError( ERROR_OUTOFMEMORY ); |
| return NULL; |
| } |
| |
| /* Build the in-use arena */ |
| |
| pNew->next->prev = pNew->prev; |
| pNew->prev->next = pNew->next; |
| pInUse = (ARENA_INUSE *)pNew; |
| pInUse->size = (pInUse->size & ~ARENA_FLAG_FREE) |
| + sizeof(ARENA_FREE) - sizeof(ARENA_INUSE); |
| pInUse->threadId = GetCurrentTask(); |
| pInUse->magic = ARENA_INUSE_MAGIC; |
| HEAP_ShrinkBlock( newsubheap, pInUse, size ); |
| memcpy( pInUse + 1, pArena + 1, oldSize ); |
| |
| /* Free the previous block */ |
| |
| HEAP_MakeInUseBlockFree( subheap, pArena ); |
| subheap = newsubheap; |
| pArena = pInUse; |
| } |
| } |
| else HEAP_ShrinkBlock( subheap, pArena, size ); /* Shrink the block */ |
| |
| /* Clear the extra bytes if needed */ |
| |
| if (size > oldSize) |
| { |
| if (flags & HEAP_ZERO_MEMORY) |
| memset( (char *)(pArena + 1) + oldSize, 0, |
| (pArena->size & ARENA_SIZE_MASK) - oldSize ); |
| else if (debugging_heap) |
| memset( (char *)(pArena + 1) + oldSize, ARENA_INUSE_FILLER, |
| (pArena->size & ARENA_SIZE_MASK) - oldSize ); |
| } |
| |
| /* Return the new arena */ |
| |
| pArena->callerEIP = *((DWORD *)&heap - 1); /* hack hack */ |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapUnlock( heap ); |
| |
| dprintf_heap( stddeb, "HeapReAlloc(%08x,%08lx,%08lx,%08lx): returning %08lx\n", |
| heap, flags, (DWORD)ptr, size, (DWORD)(pArena + 1) ); |
| return (LPVOID)(pArena + 1); |
| } |
| |
| |
| /*********************************************************************** |
| * HeapCompact (KERNEL32.335) |
| */ |
| DWORD HeapCompact( HANDLE32 heap, DWORD flags ) |
| { |
| return 0; |
| } |
| |
| |
| /*********************************************************************** |
| * HeapLock (KERNEL32.339) |
| */ |
| BOOL32 HeapLock( HANDLE32 heap ) |
| { |
| HEAP *heapPtr = HEAP_GetPtr( heap ); |
| |
| if (!heapPtr) return FALSE; |
| EnterCriticalSection( &heapPtr->critSection ); |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * HeapUnlock (KERNEL32.342) |
| */ |
| BOOL32 HeapUnlock( HANDLE32 heap ) |
| { |
| HEAP *heapPtr = HEAP_GetPtr( heap ); |
| |
| if (!heapPtr) return FALSE; |
| LeaveCriticalSection( &heapPtr->critSection ); |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * HeapSize (KERNEL32.341) |
| */ |
| DWORD HeapSize( HANDLE32 heap, DWORD flags, LPVOID ptr ) |
| { |
| DWORD ret; |
| HEAP *heapPtr = HEAP_GetPtr( heap ); |
| |
| if (!heapPtr) return FALSE; |
| flags &= HEAP_NO_SERIALIZE; |
| flags |= heapPtr->flags; |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapLock( heap ); |
| if (!HeapValidate( heap, HEAP_NO_SERIALIZE, ptr )) |
| { |
| SetLastError( ERROR_INVALID_PARAMETER ); |
| ret = 0xffffffff; |
| } |
| else |
| { |
| ARENA_INUSE *pArena = (ARENA_INUSE *)ptr - 1; |
| ret = pArena->size & ARENA_SIZE_MASK; |
| } |
| if (!(flags & HEAP_NO_SERIALIZE)) HeapUnlock( heap ); |
| |
| dprintf_heap( stddeb, "HeapSize(%08x,%08lx,%08lx): returning %08lx\n", |
| heap, flags, (DWORD)ptr, ret ); |
| return ret; |
| } |
| |
| |
| /*********************************************************************** |
| * HeapValidate (KERNEL32.343) |
| */ |
| BOOL32 HeapValidate( HANDLE32 heap, DWORD flags, LPVOID block ) |
| { |
| SUBHEAP *subheap; |
| HEAP *heapPtr = (HEAP *)heap; |
| |
| if (!heapPtr || (heapPtr->magic != HEAP_MAGIC)) |
| { |
| fprintf( stderr, "Invalid heap %08x!\n", heap ); |
| return FALSE; |
| } |
| |
| if (block) |
| { |
| if (!(subheap = HEAP_FindSubHeap( heapPtr, block )) || |
| ((char *)block < (char *)subheap + subheap->headerSize |
| + sizeof(ARENA_INUSE))) |
| { |
| fprintf( stderr, "Heap %08lx: block %08lx is not inside heap\n", |
| (DWORD)heap, (DWORD)block ); |
| return FALSE; |
| } |
| return HEAP_ValidateInUseArena( subheap, (ARENA_INUSE *)block - 1 ); |
| } |
| |
| subheap = &heapPtr->subheap; |
| while (subheap) |
| { |
| char *ptr = (char *)subheap + subheap->headerSize; |
| while (ptr < (char *)subheap + subheap->size) |
| { |
| if (*(DWORD *)ptr & ARENA_FLAG_FREE) |
| { |
| if (!HEAP_ValidateFreeArena( subheap, (ARENA_FREE *)ptr )) |
| return FALSE; |
| ptr += sizeof(ARENA_FREE) + (*(DWORD *)ptr & ARENA_SIZE_MASK); |
| } |
| else |
| { |
| if (!HEAP_ValidateInUseArena( subheap, (ARENA_INUSE *)ptr )) |
| return FALSE; |
| ptr += sizeof(ARENA_INUSE) + (*(DWORD *)ptr & ARENA_SIZE_MASK); |
| } |
| } |
| subheap = subheap->next; |
| } |
| return TRUE; |
| } |
| |
| |
| /*********************************************************************** |
| * HeapWalk (KERNEL32.344) |
| */ |
| BOOL32 HeapWalk( HANDLE32 heap, void *entry ) |
| { |
| fprintf( stderr, "HeapWalk(%08x): not implemented\n", heap ); |
| return FALSE; |
| } |
| |
| |
| /*********************************************************************** |
| * HEAP_strdupA |
| */ |
| LPSTR HEAP_strdupA( HANDLE32 heap, DWORD flags, LPCSTR str ) |
| { |
| INT32 len = lstrlen32A(str) + 1; |
| LPSTR p = HeapAlloc( heap, flags, len ); |
| if (p) strcpy( p, str ); |
| return p; |
| } |
