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Always return 8-byte aligned blocks

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svn path=/trunk/; revision=8226
This commit is contained in:
Gé van Geldorp 2004-02-17 21:11:17 +00:00
parent a57cc3b82a
commit d842500eb1
1 changed files with 5 additions and 20 deletions
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25
reactos/lib/ntdll/rtl/heap.c
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@ -46,7 +46,6 @@ typedef struct tagARENA_INUSE
DWORD size; /* Block size; must be the first field */
WORD threadId; /* Allocating thread id */
WORD magic; /* Magic number */
void *callerEIP; /* EIP of caller upon allocation */
} ARENA_INUSE;
typedef struct tagARENA_FREE
@ -94,7 +93,6 @@ typedef struct tagSUBHEAP
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, *PSUBHEAP;
#define SUBHEAP_MAGIC ((DWORD)('S' | ('U'<<8) | ('B'<<16) | ('H'<<24)))
@ -107,7 +105,7 @@ typedef struct tagHEAP
CRITICAL_SECTION critSection; /* Critical section for serialization */
DWORD flags; /* Heap flags */
DWORD magic; /* Magic number */
void *private; /* Private pointer for the user of the heap */
BYTE filler[4]; /* Make multiple of 8 bytes */
} HEAP, *PHEAP;
#define HEAP_MAGIC ((DWORD)('H' | ('E'<<8) | ('A'<<16) | ('P'<<24)))
@ -119,14 +117,6 @@ typedef struct tagHEAP
static BOOL HEAP_IsRealArena( HANDLE heap, DWORD flags, LPCVOID block, BOOL quiet );
#ifdef __GNUC__
#define GET_EIP() (__builtin_return_address(0))
#define SET_EIP(ptr) ((ARENA_INUSE*)(ptr) - 1)->callerEIP = GET_EIP()
#else
#define GET_EIP() 0
#define SET_EIP(ptr) /* nothing */
#endif /* __GNUC__ */
/***********************************************************************
* HEAP_Dump
@ -181,10 +171,9 @@ HEAP_Dump(PHEAP heap)
else if (*(DWORD *)ptr & ARENA_FLAG_PREV_FREE)
{
ARENA_INUSE *pArena = (ARENA_INUSE *)ptr;
DPRINTF( "%08lx Used %08lx %04x back=%08lx EIP=%p\n",
DPRINTF( "%08lx Used %08lx %04x back=%08lx\n",
(DWORD)pArena, pArena->size & ARENA_SIZE_MASK,
pArena->threadId, *((DWORD *)pArena - 1),
pArena->callerEIP );
pArena->threadId, *((DWORD *)pArena - 1));
ptr += sizeof(*pArena) + (pArena->size & ARENA_SIZE_MASK);
arenaSize += sizeof(ARENA_INUSE);
usedSize += pArena->size & ARENA_SIZE_MASK;
@ -192,9 +181,9 @@ HEAP_Dump(PHEAP heap)
else
{
ARENA_INUSE *pArena = (ARENA_INUSE *)ptr;
DPRINTF( "%08lx used %08lx %04x EIP=%p\n",
DPRINTF( "%08lx used %08lx %04x\n",
(DWORD)pArena, pArena->size & ARENA_SIZE_MASK,
pArena->threadId, pArena->callerEIP );
pArena->threadId);
ptr += sizeof(*pArena) + (pArena->size & ARENA_SIZE_MASK);
arenaSize += sizeof(ARENA_INUSE);
usedSize += pArena->size & ARENA_SIZE_MASK;
@ -524,7 +513,6 @@ static BOOL HEAP_InitSubHeap( HEAP *heap, LPVOID address, DWORD flags,
DWORD commitSize, DWORD totalSize )
{
SUBHEAP *subheap = (SUBHEAP *)address;
WORD selector = 0;
FREE_LIST_ENTRY *pEntry;
int i;
NTSTATUS Status;
@ -550,7 +538,6 @@ static BOOL HEAP_InitSubHeap( HEAP *heap, LPVOID address, DWORD flags,
subheap = (SUBHEAP *)address;
subheap->heap = heap;
subheap->selector = selector;
subheap->size = totalSize;
subheap->commitSize = commitSize;
subheap->magic = SUBHEAP_MAGIC;
@ -1172,7 +1159,6 @@ RtlAllocateHeap(HANDLE heap, /* [in] Handle of private heap block */
pInUse = (ARENA_INUSE *)pArena;
pInUse->size = (pInUse->size & ~ARENA_FLAG_FREE)
+ sizeof(ARENA_FREE) - sizeof(ARENA_INUSE);
pInUse->callerEIP = GET_EIP();
pInUse->threadId = (DWORD)NtCurrentTeb()->Cid.UniqueThread;
pInUse->magic = ARENA_INUSE_MAGIC;
@ -1363,7 +1349,6 @@ LPVOID STDCALL RtlReAllocateHeap(
/* Return the new arena */
pArena->callerEIP = GET_EIP();
if (!(flags & HEAP_NO_SERIALIZE)) RtlLeaveCriticalSection( &heapPtr->critSection );
TRACE("(%08x,%08lx,%08lx,%08lx): returning %08lx\n",