1901 lines
56 KiB
C
1901 lines
56 KiB
C
/*
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* Local heap functions
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*
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* Copyright 1995 Alexandre Julliard
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* Copyright 1996 Huw Davies
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*/
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/*
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* Note:
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* All local heap functions need the current DS as first parameter
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* when called from the emulation library, so they take one more
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* parameter than usual.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "windows.h"
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#include "ldt.h"
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#include "task.h"
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#include "global.h"
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#include "heap.h"
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#include "instance.h"
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#include "local.h"
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#include "module.h"
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#include "stackframe.h"
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#include "toolhelp.h"
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#include "debug.h"
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#include "callback.h"
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typedef struct
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{
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/* Arena header */
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WORD prev; /* Previous arena | arena type */
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WORD next; /* Next arena */
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/* Start of the memory block or free-list info */
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WORD size; /* Size of the free block */
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WORD free_prev; /* Previous free block */
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WORD free_next; /* Next free block */
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} LOCALARENA;
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#define ARENA_HEADER_SIZE 4
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#define ARENA_HEADER( handle) ( ((handle) & ~3) - ARENA_HEADER_SIZE)
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/* Arena types (stored in 'prev' field of the arena) */
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#define LOCAL_ARENA_FREE 0
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#define LOCAL_ARENA_FIXED 1
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/* LocalNotify() msgs */
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#define LN_OUTOFMEM 0
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#define LN_MOVE 1
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#define LN_DISCARD 2
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/* Layout of a handle entry table
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*
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* WORD count of entries
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* LOCALHANDLEENTRY[count] entries
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* WORD near ptr to next table
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*/
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typedef struct
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{
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WORD addr; /* Address of the MOVEABLE block */
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BYTE flags; /* Flags for this block */
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BYTE lock; /* Lock count */
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} LOCALHANDLEENTRY;
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/*
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* We make addr = 4n + 2 and set *((WORD *)addr - 1) = &addr like Windows does
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* in case something actually relies on this.
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* Note the ARENA_HEADER(addr) still produces the desired result ie. 4n - 4
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*
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* An unused handle has lock = flags = 0xff. In windows addr is that of next
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* free handle, at the moment in wine we set it to 0.
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*
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* A discarded block's handle has lock = addr = 0 and flags = 0x40
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* (LMEM_DISCARDED >> 8)
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*/
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#pragma pack(1)
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typedef struct
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{
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WORD check; /* 00 Heap checking flag */
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WORD freeze; /* 02 Heap frozen flag */
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WORD items; /* 04 Count of items on the heap */
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WORD first; /* 06 First item of the heap */
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WORD pad1; /* 08 Always 0 */
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WORD last; /* 0a Last item of the heap */
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WORD pad2; /* 0c Always 0 */
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BYTE ncompact; /* 0e Compactions counter */
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BYTE dislevel; /* 0f Discard level */
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DWORD distotal; /* 10 Total bytes discarded */
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WORD htable; /* 14 Pointer to handle table */
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WORD hfree; /* 16 Pointer to free handle table */
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WORD hdelta; /* 18 Delta to expand the handle table */
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WORD expand; /* 1a Pointer to expand function (unused) */
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WORD pstat; /* 1c Pointer to status structure (unused) */
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FARPROC16 notify WINE_PACKED; /* 1e Pointer to LocalNotify() function */
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WORD lock; /* 22 Lock count for the heap */
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WORD extra; /* 24 Extra bytes to allocate when expanding */
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WORD minsize; /* 26 Minimum size of the heap */
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WORD magic; /* 28 Magic number */
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} LOCALHEAPINFO;
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#pragma pack(4)
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#define LOCAL_HEAP_MAGIC 0x484c /* 'LH' */
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WORD USER_HeapSel = 0; /* USER heap selector */
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WORD GDI_HeapSel = 0; /* GDI heap selector */
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/* All local heap allocations are aligned on 4-byte boundaries */
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#define LALIGN(word) (((word) + 3) & ~3)
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#define ARENA_PTR(ptr,arena) ((LOCALARENA *)((char*)(ptr)+(arena)))
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#define ARENA_PREV(ptr,arena) (ARENA_PTR((ptr),(arena))->prev & ~3)
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#define ARENA_NEXT(ptr,arena) (ARENA_PTR((ptr),(arena))->next)
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#define ARENA_FLAGS(ptr,arena) (ARENA_PTR((ptr),(arena))->prev & 3)
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/* determine whether the handle belongs to a fixed or a moveable block */
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#define HANDLE_FIXED(handle) (((handle) & 3) == 0)
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#define HANDLE_MOVEABLE(handle) (((handle) & 3) == 2)
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/***********************************************************************
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* LOCAL_GetHeap
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*
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* Return a pointer to the local heap, making sure it exists.
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*/
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static LOCALHEAPINFO *LOCAL_GetHeap( HANDLE16 ds )
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{
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LOCALHEAPINFO *pInfo;
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INSTANCEDATA *ptr = (INSTANCEDATA *)PTR_SEG_OFF_TO_LIN( ds, 0 );
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TRACE(local, "Heap at %p, %04x\n", ptr, (ptr != NULL ? ptr->heap : 0xFFFF));
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if (!ptr || !ptr->heap) return NULL;
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if (IsBadReadPtr16( (SEGPTR)MAKELONG(ptr->heap,ds), sizeof(LOCALHEAPINFO)))
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return NULL;
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pInfo = (LOCALHEAPINFO*)((char*)ptr + ptr->heap);
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if (pInfo->magic != LOCAL_HEAP_MAGIC) return NULL;
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return pInfo;
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}
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/***********************************************************************
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* LOCAL_MakeBlockFree
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*
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* Make a block free, inserting it in the free-list.
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* 'block' is the handle of the block arena; 'baseptr' points to
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* the beginning of the data segment containing the heap.
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*/
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static void LOCAL_MakeBlockFree( char *baseptr, WORD block )
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{
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LOCALARENA *pArena, *pNext;
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WORD next;
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/* Mark the block as free */
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pArena = ARENA_PTR( baseptr, block );
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pArena->prev = (pArena->prev & ~3) | LOCAL_ARENA_FREE;
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pArena->size = pArena->next - block;
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/* Find the next free block (last block is always free) */
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next = pArena->next;
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for (;;)
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{
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pNext = ARENA_PTR( baseptr, next );
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if ((pNext->prev & 3) == LOCAL_ARENA_FREE) break;
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next = pNext->next;
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}
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TRACE(local, "Local_MakeBlockFree %04x, next %04x\n", block, next );
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/* Insert the free block in the free-list */
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pArena->free_prev = pNext->free_prev;
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pArena->free_next = next;
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ARENA_PTR(baseptr,pNext->free_prev)->free_next = block;
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pNext->free_prev = block;
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}
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/***********************************************************************
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* LOCAL_RemoveFreeBlock
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*
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* Remove a block from the free-list.
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* 'block' is the handle of the block arena; 'baseptr' points to
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* the beginning of the data segment containing the heap.
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*/
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static void LOCAL_RemoveFreeBlock( char *baseptr, WORD block )
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{
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/* Mark the block as fixed */
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LOCALARENA *pArena = ARENA_PTR( baseptr, block );
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pArena->prev = (pArena->prev & ~3) | LOCAL_ARENA_FIXED;
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/* Remove it from the list */
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ARENA_PTR(baseptr,pArena->free_prev)->free_next = pArena->free_next;
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ARENA_PTR(baseptr,pArena->free_next)->free_prev = pArena->free_prev;
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}
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/***********************************************************************
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* LOCAL_AddBlock
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*
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* Insert a new block in the heap.
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* 'new' is the handle of the new block arena; 'baseptr' points to
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* the beginning of the data segment containing the heap; 'prev' is
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* the block before the new one.
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*/
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static void LOCAL_AddBlock( char *baseptr, WORD prev, WORD new )
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{
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LOCALARENA *pPrev = ARENA_PTR( baseptr, prev );
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LOCALARENA *pNew = ARENA_PTR( baseptr, new );
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pNew->prev = (prev & ~3) | LOCAL_ARENA_FIXED;
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pNew->next = pPrev->next;
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ARENA_PTR(baseptr,pPrev->next)->prev &= 3;
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ARENA_PTR(baseptr,pPrev->next)->prev |= new;
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pPrev->next = new;
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}
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/***********************************************************************
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* LOCAL_RemoveBlock
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*
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* Remove a block from the heap.
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* 'block' is the handle of the block arena; 'baseptr' points to
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* the beginning of the data segment containing the heap.
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*/
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static void LOCAL_RemoveBlock( char *baseptr, WORD block )
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{
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LOCALARENA *pArena, *pTmp;
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/* Remove the block from the free-list */
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TRACE(local, "Local_RemoveBlock\n");
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pArena = ARENA_PTR( baseptr, block );
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if ((pArena->prev & 3) == LOCAL_ARENA_FREE)
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LOCAL_RemoveFreeBlock( baseptr, block );
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/* If the previous block is free, expand its size */
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pTmp = ARENA_PTR( baseptr, pArena->prev & ~3 );
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if ((pTmp->prev & 3) == LOCAL_ARENA_FREE)
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pTmp->size += pArena->next - block;
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/* Remove the block from the linked list */
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pTmp->next = pArena->next;
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pTmp = ARENA_PTR( baseptr, pArena->next );
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pTmp->prev = (pTmp->prev & 3) | (pArena->prev & ~3);
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}
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/***********************************************************************
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* LOCAL_PrintHeap
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*/
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static void LOCAL_PrintHeap( HANDLE16 ds )
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{
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char *ptr;
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LOCALHEAPINFO *pInfo;
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WORD arena;
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/* FIXME - the test should be done when calling the function!
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plus is not clear that we should print this info
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only when TRACE_ON is on! */
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if(!TRACE_ON(local)) return;
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ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
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pInfo = LOCAL_GetHeap( ds );
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if (!pInfo)
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{
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DUMP( "Local Heap corrupted! ds=%04x\n", ds );
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return;
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}
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DUMP( "Local Heap ds=%04x first=%04x last=%04x items=%d\n",
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ds, pInfo->first, pInfo->last, pInfo->items );
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arena = pInfo->first;
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for (;;)
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{
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LOCALARENA *pArena = ARENA_PTR(ptr,arena);
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DUMP( " %04x: prev=%04x next=%04x type=%d\n", arena,
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pArena->prev & ~3, pArena->next, pArena->prev & 3 );
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if (arena == pInfo->first)
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{
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DUMP( " size=%d free_prev=%04x free_next=%04x\n",
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pArena->size, pArena->free_prev, pArena->free_next );
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}
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if ((pArena->prev & 3) == LOCAL_ARENA_FREE)
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{
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DUMP( " size=%d free_prev=%04x free_next=%04x\n",
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pArena->size, pArena->free_prev, pArena->free_next );
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if (pArena->next == arena) break; /* last one */
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if (ARENA_PTR(ptr,pArena->free_next)->free_prev != arena)
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{
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DUMP( "*** arena->free_next->free_prev != arena\n" );
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break;
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}
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}
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if (pArena->next == arena)
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{
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DUMP( "*** last block is not marked free\n" );
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break;
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}
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if ((ARENA_PTR(ptr,pArena->next)->prev & ~3) != arena)
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{
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DUMP( "*** arena->next->prev != arena (%04x, %04x)\n",
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pArena->next, ARENA_PTR(ptr,pArena->next)->prev);
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break;
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}
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arena = pArena->next;
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}
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}
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/***********************************************************************
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* LocalInit (KERNEL.4)
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*/
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BOOL16 WINAPI LocalInit( HANDLE16 selector, WORD start, WORD end )
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{
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char *ptr;
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WORD heapInfoArena, freeArena, lastArena;
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LOCALHEAPINFO *pHeapInfo;
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LOCALARENA *pArena, *pFirstArena, *pLastArena;
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NE_MODULE *pModule;
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/* The initial layout of the heap is: */
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/* - first arena (FIXED) */
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/* - heap info structure (FIXED) */
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/* - large free block (FREE) */
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/* - last arena (FREE) */
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TRACE(local, "%04x %04x-%04x\n", selector, start, end);
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if (!selector) selector = CURRENT_DS;
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if (TRACE_ON(heap))
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{
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/* If TRACE_ON(heap) is set, the global heap blocks are */
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/* cleared before use, so we can test for double initialization. */
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if (LOCAL_GetHeap(selector))
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{
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ERR(local, "Heap %04x initialized twice.\n", selector);
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LOCAL_PrintHeap(selector);
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}
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}
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if (start == 0) {
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/* Check if the segment is the DGROUP of a module */
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if ((pModule = NE_GetPtr( selector )))
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{
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SEGTABLEENTRY *pSeg = NE_SEG_TABLE( pModule ) + pModule->dgroup - 1;
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if (pModule->dgroup && (GlobalHandleToSel(pSeg->hSeg) == selector))
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{
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/* We can't just use the simple method of using the value
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* of minsize + stacksize, since there are programs that
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* resize the data segment before calling InitTask(). So,
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* we must put it at the end of the segment */
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start = GlobalSize16( GlobalHandle16( selector ) );
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start -= end;
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end += start;
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TRACE(local," new start %04x, minstart: %04x\n", start, pSeg->minsize + pModule->stack_size);
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}
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}
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}
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ptr = PTR_SEG_OFF_TO_LIN( selector, 0 );
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start = LALIGN( MAX( start, sizeof(INSTANCEDATA) ) );
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heapInfoArena = LALIGN(start + sizeof(LOCALARENA) );
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freeArena = LALIGN( heapInfoArena + ARENA_HEADER_SIZE
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+ sizeof(LOCALHEAPINFO) );
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lastArena = (end - sizeof(LOCALARENA)) & ~3;
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/* Make sure there's enough space. */
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if (freeArena + sizeof(LOCALARENA) >= lastArena) return FALSE;
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/* Initialise the first arena */
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pFirstArena = ARENA_PTR( ptr, start );
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pFirstArena->prev = start | LOCAL_ARENA_FIXED;
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pFirstArena->next = heapInfoArena;
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pFirstArena->size = LALIGN(sizeof(LOCALARENA));
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pFirstArena->free_prev = start; /* this one */
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pFirstArena->free_next = freeArena;
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/* Initialise the arena of the heap info structure */
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pArena = ARENA_PTR( ptr, heapInfoArena );
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pArena->prev = start | LOCAL_ARENA_FIXED;
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pArena->next = freeArena;
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/* Initialise the heap info structure */
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pHeapInfo = (LOCALHEAPINFO *) (ptr + heapInfoArena + ARENA_HEADER_SIZE );
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memset( pHeapInfo, 0, sizeof(LOCALHEAPINFO) );
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pHeapInfo->items = 4;
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pHeapInfo->first = start;
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pHeapInfo->last = lastArena;
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pHeapInfo->htable = 0;
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pHeapInfo->hdelta = 0x20;
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pHeapInfo->extra = 0x200;
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pHeapInfo->minsize = lastArena - freeArena;
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pHeapInfo->magic = LOCAL_HEAP_MAGIC;
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/* Initialise the large free block */
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pArena = ARENA_PTR( ptr, freeArena );
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pArena->prev = heapInfoArena | LOCAL_ARENA_FREE;
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pArena->next = lastArena;
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pArena->size = lastArena - freeArena;
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pArena->free_prev = start;
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pArena->free_next = lastArena;
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/* Initialise the last block */
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pLastArena = ARENA_PTR( ptr, lastArena );
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pLastArena->prev = freeArena | LOCAL_ARENA_FREE;
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pLastArena->next = lastArena; /* this one */
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pLastArena->size = LALIGN(sizeof(LOCALARENA));
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pLastArena->free_prev = freeArena;
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pLastArena->free_next = lastArena; /* this one */
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/* Store the local heap address in the instance data */
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((INSTANCEDATA *)ptr)->heap = heapInfoArena + ARENA_HEADER_SIZE;
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LOCAL_PrintHeap( selector );
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return TRUE;
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}
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/***********************************************************************
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* LOCAL_GrowHeap
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*/
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static BOOL16 LOCAL_GrowHeap( HANDLE16 ds )
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{
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HANDLE16 hseg;
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LONG oldsize;
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LONG end;
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LOCALHEAPINFO *pHeapInfo;
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WORD freeArena, lastArena;
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LOCALARENA *pArena, *pLastArena;
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char *ptr;
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hseg = GlobalHandle16( ds );
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/* maybe mem allocated by Virtual*() ? */
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if (!hseg) return FALSE;
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oldsize = GlobalSize16( hseg );
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/* if nothing can be gained, return */
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if (oldsize > 0xfff0) return FALSE;
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hseg = GlobalReAlloc16( hseg, 0x10000, GMEM_FIXED );
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ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
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pHeapInfo = LOCAL_GetHeap( ds );
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if (pHeapInfo == NULL) {
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ERR(local, "Heap not found\n" );
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return FALSE;
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}
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end = GlobalSize16( hseg );
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lastArena = (end - sizeof(LOCALARENA)) & ~3;
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/* Update the HeapInfo */
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pHeapInfo->items++;
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freeArena = pHeapInfo->last;
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pHeapInfo->last = lastArena;
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pHeapInfo->minsize += end - oldsize;
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/* grow the old last block */
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pArena = ARENA_PTR( ptr, freeArena );
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pArena->size = lastArena - freeArena;
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pArena->next = lastArena;
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pArena->free_next = lastArena;
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/* Initialise the new last block */
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pLastArena = ARENA_PTR( ptr, lastArena );
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pLastArena->prev = freeArena | LOCAL_ARENA_FREE;
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pLastArena->next = lastArena; /* this one */
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pLastArena->size = LALIGN(sizeof(LOCALARENA));
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pLastArena->free_prev = freeArena;
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pLastArena->free_next = lastArena; /* this one */
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/* If block before freeArena is also free then merge them */
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if((ARENA_PTR(ptr, (pArena->prev & ~3))->prev & 3) == LOCAL_ARENA_FREE)
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{
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LOCAL_RemoveBlock(ptr, freeArena);
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pHeapInfo->items--;
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}
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|
TRACE(local, "Heap expanded\n" );
|
|
LOCAL_PrintHeap( ds );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_FreeArena
|
|
*/
|
|
static HLOCAL16 LOCAL_FreeArena( WORD ds, WORD arena )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALHEAPINFO *pInfo;
|
|
LOCALARENA *pArena, *pPrev, *pNext;
|
|
|
|
TRACE(local, "%04x ds=%04x\n", arena, ds );
|
|
if (!(pInfo = LOCAL_GetHeap( ds ))) return arena;
|
|
|
|
pArena = ARENA_PTR( ptr, arena );
|
|
if ((pArena->prev & 3) == LOCAL_ARENA_FREE)
|
|
{
|
|
/* shouldn't happen */
|
|
ERR(local, "Trying to free block %04x twice!\n",
|
|
arena );
|
|
LOCAL_PrintHeap( ds );
|
|
return arena;
|
|
}
|
|
|
|
/* Check if we can merge with the previous block */
|
|
|
|
pPrev = ARENA_PTR( ptr, pArena->prev & ~3 );
|
|
pNext = ARENA_PTR( ptr, pArena->next );
|
|
if ((pPrev->prev & 3) == LOCAL_ARENA_FREE)
|
|
{
|
|
arena = pArena->prev & ~3;
|
|
pArena = pPrev;
|
|
LOCAL_RemoveBlock( ptr, pPrev->next );
|
|
pInfo->items--;
|
|
}
|
|
else /* Make a new free block */
|
|
{
|
|
LOCAL_MakeBlockFree( ptr, arena );
|
|
}
|
|
|
|
/* Check if we can merge with the next block */
|
|
|
|
if ((pArena->next == pArena->free_next) &&
|
|
(pArena->next != pInfo->last))
|
|
{
|
|
LOCAL_RemoveBlock( ptr, pArena->next );
|
|
pInfo->items--;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_ShrinkArena
|
|
*
|
|
* Shrink an arena by creating a free block at its end if possible.
|
|
* 'size' includes the arena header, and must be aligned.
|
|
*/
|
|
static void LOCAL_ShrinkArena( WORD ds, WORD arena, WORD size )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALARENA *pArena = ARENA_PTR( ptr, arena );
|
|
|
|
if (arena + size + LALIGN(sizeof(LOCALARENA)) < pArena->next)
|
|
{
|
|
LOCALHEAPINFO *pInfo = LOCAL_GetHeap( ds );
|
|
if (!pInfo) return;
|
|
LOCAL_AddBlock( ptr, arena, arena + size );
|
|
pInfo->items++;
|
|
LOCAL_FreeArena( ds, arena + size );
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_GrowArenaDownward
|
|
*
|
|
* Grow an arena downward by using the previous arena (must be free).
|
|
*/
|
|
static void LOCAL_GrowArenaDownward( WORD ds, WORD arena, WORD newsize )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALHEAPINFO *pInfo;
|
|
LOCALARENA *pArena = ARENA_PTR( ptr, arena );
|
|
WORD prevArena = pArena->prev & ~3;
|
|
LOCALARENA *pPrevArena = ARENA_PTR( ptr, prevArena );
|
|
WORD offset, size;
|
|
char *p;
|
|
|
|
if (!(pInfo = LOCAL_GetHeap( ds ))) return;
|
|
offset = pPrevArena->size;
|
|
size = pArena->next - arena - ARENA_HEADER_SIZE;
|
|
LOCAL_RemoveFreeBlock( ptr, prevArena );
|
|
LOCAL_RemoveBlock( ptr, arena );
|
|
pInfo->items--;
|
|
p = (char *)pPrevArena + ARENA_HEADER_SIZE;
|
|
while (offset < size)
|
|
{
|
|
memcpy( p, p + offset, offset );
|
|
p += offset;
|
|
size -= offset;
|
|
}
|
|
if (size) memcpy( p, p + offset, size );
|
|
LOCAL_ShrinkArena( ds, prevArena, newsize );
|
|
}
|
|
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_GrowArenaUpward
|
|
*
|
|
* Grow an arena upward by using the next arena (must be free and big
|
|
* enough). Newsize includes the arena header and must be aligned.
|
|
*/
|
|
static void LOCAL_GrowArenaUpward( WORD ds, WORD arena, WORD newsize )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALHEAPINFO *pInfo;
|
|
LOCALARENA *pArena = ARENA_PTR( ptr, arena );
|
|
WORD nextArena = pArena->next;
|
|
|
|
if (!(pInfo = LOCAL_GetHeap( ds ))) return;
|
|
LOCAL_RemoveBlock( ptr, nextArena );
|
|
pInfo->items--;
|
|
LOCAL_ShrinkArena( ds, arena, newsize );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_GetFreeSpace
|
|
*/
|
|
static WORD LOCAL_GetFreeSpace(WORD ds, WORD countdiscard)
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALHEAPINFO *pInfo;
|
|
LOCALARENA *pArena;
|
|
WORD arena;
|
|
WORD freespace = 0;
|
|
|
|
if (!(pInfo = LOCAL_GetHeap( ds )))
|
|
{
|
|
ERR(local, "Local heap not found\n" );
|
|
LOCAL_PrintHeap(ds);
|
|
return 0;
|
|
}
|
|
arena = pInfo->first;
|
|
pArena = ARENA_PTR( ptr, arena );
|
|
while (arena != pArena->free_next)
|
|
{
|
|
arena = pArena->free_next;
|
|
pArena = ARENA_PTR( ptr, arena );
|
|
if (pArena->size >= freespace) freespace = pArena->size;
|
|
}
|
|
/* FIXME doesn't yet calculate space that would become free if everything
|
|
were discarded when countdiscard == 1 */
|
|
if (freespace < ARENA_HEADER_SIZE) freespace = 0;
|
|
else freespace -= ARENA_HEADER_SIZE;
|
|
return freespace;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_Compact
|
|
*/
|
|
WORD LOCAL_Compact( HANDLE16 ds, UINT16 minfree, UINT16 flags )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALHEAPINFO *pInfo;
|
|
LOCALARENA *pArena, *pMoveArena, *pFinalArena;
|
|
WORD arena, movearena, finalarena, table;
|
|
WORD count, movesize, size;
|
|
WORD freespace;
|
|
LOCALHANDLEENTRY *pEntry;
|
|
|
|
if (!(pInfo = LOCAL_GetHeap( ds )))
|
|
{
|
|
ERR(local, "Local heap not found\n" );
|
|
LOCAL_PrintHeap(ds);
|
|
return 0;
|
|
}
|
|
TRACE(local, "ds = %04x, minfree = %04x, flags = %04x\n",
|
|
ds, minfree, flags);
|
|
freespace = LOCAL_GetFreeSpace(ds, minfree ? 0 : 1);
|
|
if(freespace >= minfree || (flags & LMEM_NOCOMPACT))
|
|
{
|
|
TRACE(local, "Returning %04x.\n", freespace);
|
|
return freespace;
|
|
}
|
|
TRACE(local, "Compacting heap %04x.\n", ds);
|
|
table = pInfo->htable;
|
|
while(table)
|
|
{
|
|
pEntry = (LOCALHANDLEENTRY *)(ptr + table + sizeof(WORD));
|
|
for(count = *(WORD *)(ptr + table); count > 0; count--, pEntry++)
|
|
{
|
|
if((pEntry->lock == 0) && (pEntry->flags != (LMEM_DISCARDED >> 8)))
|
|
{
|
|
/* OK we can move this one if we want */
|
|
TRACE(local, "handle %04x (block %04x) can be moved.\n",
|
|
(WORD)((char *)pEntry - ptr), pEntry->addr);
|
|
movearena = ARENA_HEADER(pEntry->addr);
|
|
pMoveArena = ARENA_PTR(ptr, movearena);
|
|
movesize = pMoveArena->next - movearena;
|
|
arena = pInfo->first;
|
|
pArena = ARENA_PTR(ptr, arena);
|
|
size = 0xffff;
|
|
finalarena = 0;
|
|
/* Try to find the smallest arena that will do, */
|
|
/* which is below us in memory */
|
|
for(;;)
|
|
{
|
|
arena = pArena->free_next;
|
|
pArena = ARENA_PTR(ptr, arena);
|
|
if(arena >= movearena)
|
|
break;
|
|
if(arena == pArena->free_next)
|
|
break;
|
|
if((pArena->size >= movesize) && (pArena->size < size))
|
|
{
|
|
size = pArena->size;
|
|
finalarena = arena;
|
|
}
|
|
}
|
|
if (finalarena) /* Actually got somewhere to move */
|
|
{
|
|
TRACE(local, "Moving it to %04x.\n", finalarena);
|
|
pFinalArena = ARENA_PTR(ptr, finalarena);
|
|
size = pFinalArena->size;
|
|
LOCAL_RemoveFreeBlock(ptr, finalarena);
|
|
LOCAL_ShrinkArena( ds, finalarena, movesize );
|
|
/* Copy the arena to it's new location */
|
|
memcpy((char *)pFinalArena + ARENA_HEADER_SIZE,
|
|
(char *)pMoveArena + ARENA_HEADER_SIZE,
|
|
movesize - ARENA_HEADER_SIZE );
|
|
/* Free the old location */
|
|
LOCAL_FreeArena(ds, movearena);
|
|
if (pInfo->notify)
|
|
Callbacks->CallLocalNotifyFunc(pInfo->notify, LN_MOVE,
|
|
(WORD)((char *)pEntry - ptr), pEntry->addr);
|
|
/* Update handle table entry */
|
|
pEntry->addr = finalarena + ARENA_HEADER_SIZE + sizeof(HLOCAL16) ;
|
|
}
|
|
else if((ARENA_PTR(ptr, pMoveArena->prev & ~3)->prev & 3)
|
|
== LOCAL_ARENA_FREE)
|
|
{
|
|
/* Previous arena is free (but < movesize) */
|
|
/* so we can 'slide' movearena down into it */
|
|
finalarena = pMoveArena->prev & ~3;
|
|
LOCAL_GrowArenaDownward( ds, movearena, movesize );
|
|
/* Update handle table entry */
|
|
pEntry->addr = finalarena + ARENA_HEADER_SIZE + sizeof(HLOCAL16) ;
|
|
}
|
|
}
|
|
}
|
|
table = *(WORD *)pEntry;
|
|
}
|
|
freespace = LOCAL_GetFreeSpace(ds, minfree ? 0 : 1);
|
|
if(freespace >= minfree || (flags & LMEM_NODISCARD))
|
|
{
|
|
TRACE(local, "Returning %04x.\n", freespace);
|
|
return freespace;
|
|
}
|
|
|
|
table = pInfo->htable;
|
|
while(table)
|
|
{
|
|
pEntry = (LOCALHANDLEENTRY *)(ptr + table + sizeof(WORD));
|
|
for(count = *(WORD *)(ptr + table); count > 0; count--, pEntry++)
|
|
{
|
|
if(pEntry->addr && pEntry->lock == 0 &&
|
|
(pEntry->flags & (LMEM_DISCARDABLE >> 8)))
|
|
{
|
|
TRACE(local, "Discarding handle %04x (block %04x).\n",
|
|
(char *)pEntry - ptr, pEntry->addr);
|
|
LOCAL_FreeArena(ds, ARENA_HEADER(pEntry->addr));
|
|
if (pInfo->notify)
|
|
Callbacks->CallLocalNotifyFunc(pInfo->notify, LN_DISCARD,
|
|
(char *)pEntry - ptr, pEntry->flags);
|
|
pEntry->addr = 0;
|
|
pEntry->flags = (LMEM_DISCARDED >> 8);
|
|
}
|
|
}
|
|
table = *(WORD *)pEntry;
|
|
}
|
|
return LOCAL_Compact(ds, 0xffff, LMEM_NODISCARD);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_FindFreeBlock
|
|
*/
|
|
static HLOCAL16 LOCAL_FindFreeBlock( HANDLE16 ds, WORD size )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALHEAPINFO *pInfo;
|
|
LOCALARENA *pArena;
|
|
WORD arena;
|
|
|
|
if (!(pInfo = LOCAL_GetHeap( ds )))
|
|
{
|
|
ERR(local, "Local heap not found\n" );
|
|
LOCAL_PrintHeap(ds);
|
|
return 0;
|
|
}
|
|
|
|
arena = pInfo->first;
|
|
pArena = ARENA_PTR( ptr, arena );
|
|
for (;;) {
|
|
arena = pArena->free_next;
|
|
pArena = ARENA_PTR( ptr, arena );
|
|
if (arena == pArena->free_next) break;
|
|
if (pArena->size >= size) return arena;
|
|
}
|
|
TRACE(local, "not enough space\n" );
|
|
LOCAL_PrintHeap(ds);
|
|
return 0;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* LOCAL_GetBlock
|
|
* The segment may get moved around in this function, so all callers
|
|
* should reset their pointer variables.
|
|
*/
|
|
static HLOCAL16 LOCAL_GetBlock( HANDLE16 ds, WORD size, WORD flags )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALHEAPINFO *pInfo;
|
|
LOCALARENA *pArena;
|
|
WORD arena;
|
|
|
|
if (!(pInfo = LOCAL_GetHeap( ds )))
|
|
{
|
|
ERR(local, "Local heap not found\n");
|
|
LOCAL_PrintHeap(ds);
|
|
return 0;
|
|
}
|
|
|
|
size += ARENA_HEADER_SIZE;
|
|
size = LALIGN( MAX( size, sizeof(LOCALARENA) ) );
|
|
|
|
#if 0
|
|
notify_done:
|
|
#endif
|
|
/* Find a suitable free block */
|
|
arena = LOCAL_FindFreeBlock( ds, size );
|
|
if (arena == 0) {
|
|
/* no space: try to make some */
|
|
LOCAL_Compact( ds, size, flags );
|
|
arena = LOCAL_FindFreeBlock( ds, size );
|
|
}
|
|
if (arena == 0) {
|
|
/* still no space: try to grow the segment */
|
|
if (!(LOCAL_GrowHeap( ds )))
|
|
{
|
|
#if 0
|
|
/* FIXME: doesn't work correctly yet */
|
|
if ((pInfo->notify) && (Callbacks->CallLocalNotifyFunc(pInfo->notify, LN_OUTOFMEM, ds - 20, size))) /* FIXME: "size" correct ? (should indicate bytes needed) */
|
|
goto notify_done;
|
|
#endif
|
|
return 0;
|
|
}
|
|
ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
pInfo = LOCAL_GetHeap( ds );
|
|
arena = LOCAL_FindFreeBlock( ds, size );
|
|
}
|
|
if (arena == 0) {
|
|
if (ds == GDI_HeapSel) {
|
|
ERR(local, "not enough space in GDI local heap "
|
|
"(%04x) for %d bytes\n", ds, size );
|
|
} else if (ds == USER_HeapSel) {
|
|
ERR(local, "not enough space in USER local heap "
|
|
"(%04x) for %d bytes\n", ds, size );
|
|
} else {
|
|
ERR(local, "not enough space in local heap "
|
|
"%04x for %d bytes\n", ds, size );
|
|
}
|
|
#if 0
|
|
if ((pInfo->notify) &&
|
|
/* FIXME: "size" correct ? (should indicate bytes needed) */
|
|
(Callbacks->CallLocalNotifyFunc(pInfo->notify, LN_OUTOFMEM, ds, size)))
|
|
goto notify_done;
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
/* Make a block out of the free arena */
|
|
pArena = ARENA_PTR( ptr, arena );
|
|
TRACE(local, "LOCAL_GetBlock size = %04x, arena %04x size %04x\n",
|
|
size, arena, pArena->size );
|
|
LOCAL_RemoveFreeBlock( ptr, arena );
|
|
LOCAL_ShrinkArena( ds, arena, size );
|
|
|
|
if (flags & LMEM_ZEROINIT)
|
|
memset((char *)pArena + ARENA_HEADER_SIZE, 0, size-ARENA_HEADER_SIZE);
|
|
return arena + ARENA_HEADER_SIZE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_NewHTable
|
|
*/
|
|
static BOOL16 LOCAL_NewHTable( HANDLE16 ds )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALHEAPINFO *pInfo;
|
|
LOCALHANDLEENTRY *pEntry;
|
|
HLOCAL16 handle;
|
|
int i;
|
|
|
|
TRACE(local, "Local_NewHTable\n" );
|
|
if (!(pInfo = LOCAL_GetHeap( ds )))
|
|
{
|
|
ERR(local, "Local heap not found\n");
|
|
LOCAL_PrintHeap(ds);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!(handle = LOCAL_GetBlock( ds, pInfo->hdelta * sizeof(LOCALHANDLEENTRY)
|
|
+ 2 * sizeof(WORD), LMEM_FIXED )))
|
|
return FALSE;
|
|
if (!(ptr = PTR_SEG_OFF_TO_LIN( ds, 0 )))
|
|
ERR(local, "ptr == NULL after GetBlock.\n");
|
|
if (!(pInfo = LOCAL_GetHeap( ds )))
|
|
ERR(local,"pInfo == NULL after GetBlock.\n");
|
|
|
|
/* Fill the entry table */
|
|
|
|
*(WORD *)(ptr + handle) = pInfo->hdelta;
|
|
pEntry = (LOCALHANDLEENTRY *)(ptr + handle + sizeof(WORD));
|
|
for (i = pInfo->hdelta; i > 0; i--, pEntry++) {
|
|
pEntry->lock = pEntry->flags = 0xff;
|
|
pEntry->addr = 0;
|
|
}
|
|
*(WORD *)pEntry = pInfo->htable;
|
|
pInfo->htable = handle;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_GetNewHandleEntry
|
|
*/
|
|
static HLOCAL16 LOCAL_GetNewHandleEntry( HANDLE16 ds )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALHEAPINFO *pInfo;
|
|
LOCALHANDLEENTRY *pEntry = NULL;
|
|
WORD table;
|
|
|
|
if (!(pInfo = LOCAL_GetHeap( ds )))
|
|
{
|
|
ERR(local, "Local heap not found\n");
|
|
LOCAL_PrintHeap(ds);
|
|
return 0;
|
|
}
|
|
|
|
/* Find a free slot in existing tables */
|
|
|
|
table = pInfo->htable;
|
|
while (table)
|
|
{
|
|
WORD count = *(WORD *)(ptr + table);
|
|
pEntry = (LOCALHANDLEENTRY *)(ptr + table + sizeof(WORD));
|
|
for (; count > 0; count--, pEntry++)
|
|
if (pEntry->lock == 0xff) break;
|
|
if (count) break;
|
|
table = *(WORD *)pEntry;
|
|
}
|
|
|
|
if (!table) /* We need to create a new table */
|
|
{
|
|
if (!LOCAL_NewHTable( ds )) return 0;
|
|
ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
pInfo = LOCAL_GetHeap( ds );
|
|
pEntry = (LOCALHANDLEENTRY *)(ptr + pInfo->htable + sizeof(WORD));
|
|
}
|
|
|
|
/* Now allocate this entry */
|
|
|
|
pEntry->lock = 0;
|
|
pEntry->flags = 0;
|
|
TRACE(local, "(%04x): %04x\n",
|
|
ds, ((char *)pEntry - ptr) );
|
|
return (HLOCAL16)((char *)pEntry - ptr);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_FreeHandleEntry
|
|
*
|
|
* Free a handle table entry.
|
|
*/
|
|
static void LOCAL_FreeHandleEntry( HANDLE16 ds, HLOCAL16 handle )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALHANDLEENTRY *pEntry = (LOCALHANDLEENTRY *)(ptr + handle);
|
|
LOCALHEAPINFO *pInfo;
|
|
WORD *pTable;
|
|
WORD table, count, i;
|
|
|
|
if (!(pInfo = LOCAL_GetHeap( ds ))) return;
|
|
|
|
/* Find the table where this handle comes from */
|
|
|
|
pTable = &pInfo->htable;
|
|
while (*pTable)
|
|
{
|
|
WORD size = (*(WORD *)(ptr + *pTable)) * sizeof(LOCALHANDLEENTRY);
|
|
if ((handle >= *pTable + sizeof(WORD)) &&
|
|
(handle < *pTable + sizeof(WORD) + size)) break; /* Found it */
|
|
pTable = (WORD *)(ptr + *pTable + sizeof(WORD) + size);
|
|
}
|
|
if (!*pTable)
|
|
{
|
|
ERR(local, "Invalid entry %04x\n", handle);
|
|
LOCAL_PrintHeap( ds );
|
|
return;
|
|
}
|
|
|
|
/* Make the entry free */
|
|
|
|
pEntry->addr = 0; /* just in case */
|
|
pEntry->lock = 0xff;
|
|
pEntry->flags = 0xff;
|
|
/* Now check if all entries in this table are free */
|
|
|
|
table = *pTable;
|
|
pEntry = (LOCALHANDLEENTRY *)(ptr + table + sizeof(WORD));
|
|
count = *(WORD *)(ptr + table);
|
|
for (i = count; i > 0; i--, pEntry++) if (pEntry->lock != 0xff) return;
|
|
|
|
/* Remove the table from the linked list and free it */
|
|
|
|
TRACE(local, "(%04x): freeing table %04x\n",
|
|
ds, table);
|
|
*pTable = *(WORD *)pEntry;
|
|
LOCAL_FreeArena( ds, ARENA_HEADER( table ) );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_Free
|
|
*
|
|
* Implementation of LocalFree().
|
|
*/
|
|
HLOCAL16 LOCAL_Free( HANDLE16 ds, HLOCAL16 handle )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
|
|
TRACE(local, "%04x ds=%04x\n", handle, ds );
|
|
|
|
if (!handle) { WARN(local, "Handle is 0.\n" ); return 0; }
|
|
if (HANDLE_FIXED( handle ))
|
|
{
|
|
if (!LOCAL_FreeArena( ds, ARENA_HEADER( handle ) )) return 0; /* OK */
|
|
else return handle; /* couldn't free it */
|
|
}
|
|
else
|
|
{
|
|
LOCALHANDLEENTRY *pEntry = (LOCALHANDLEENTRY *)(ptr + handle);
|
|
if (pEntry->flags != (LMEM_DISCARDED >> 8))
|
|
{
|
|
TRACE(local, "real block at %04x\n",
|
|
pEntry->addr );
|
|
if (LOCAL_FreeArena( ds, ARENA_HEADER(pEntry->addr) ))
|
|
return handle; /* couldn't free it */
|
|
}
|
|
LOCAL_FreeHandleEntry( ds, handle );
|
|
return 0; /* OK */
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_Alloc
|
|
*
|
|
* Implementation of LocalAlloc().
|
|
*
|
|
*/
|
|
HLOCAL16 LOCAL_Alloc( HANDLE16 ds, WORD flags, WORD size )
|
|
{
|
|
char *ptr;
|
|
HLOCAL16 handle;
|
|
|
|
TRACE(local, "%04x %d ds=%04x\n", flags, size, ds );
|
|
|
|
if(size > 0 && size <= 4) size = 5;
|
|
if (flags & LMEM_MOVEABLE)
|
|
{
|
|
LOCALHANDLEENTRY *plhe;
|
|
HLOCAL16 hmem;
|
|
|
|
if(size)
|
|
{
|
|
if (!(hmem = LOCAL_GetBlock( ds, size + sizeof(HLOCAL16), flags )))
|
|
return 0;
|
|
}
|
|
else /* We just need to allocate a discarded handle */
|
|
hmem = 0;
|
|
if (!(handle = LOCAL_GetNewHandleEntry( ds )))
|
|
{
|
|
WARN(local, "Couldn't get handle.\n");
|
|
if(hmem)
|
|
LOCAL_FreeArena( ds, ARENA_HEADER(hmem) );
|
|
return 0;
|
|
}
|
|
ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
plhe = (LOCALHANDLEENTRY *)(ptr + handle);
|
|
plhe->lock = 0;
|
|
if(hmem)
|
|
{
|
|
plhe->addr = hmem + sizeof(HLOCAL16);
|
|
plhe->flags = (BYTE)((flags & 0x0f00) >> 8);
|
|
*(HLOCAL16 *)(ptr + hmem) = handle;
|
|
}
|
|
else
|
|
{
|
|
plhe->addr = 0;
|
|
plhe->flags = LMEM_DISCARDED >> 8;
|
|
}
|
|
}
|
|
else /* FIXED */
|
|
{
|
|
if(!size)
|
|
return 0;
|
|
handle = LOCAL_GetBlock( ds, size, flags );
|
|
}
|
|
return handle;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_ReAlloc
|
|
*
|
|
* Implementation of LocalReAlloc().
|
|
*/
|
|
HLOCAL16 LOCAL_ReAlloc( HANDLE16 ds, HLOCAL16 handle, WORD size, WORD flags )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALHEAPINFO *pInfo;
|
|
LOCALARENA *pArena, *pNext;
|
|
LOCALHANDLEENTRY *pEntry = NULL;
|
|
WORD arena, oldsize;
|
|
HLOCAL16 hmem, blockhandle;
|
|
LONG nextarena;
|
|
|
|
if (!handle) return 0;
|
|
if(HANDLE_MOVEABLE(handle) &&
|
|
((LOCALHANDLEENTRY *)(ptr + handle))->lock == 0xff) /* An unused handle */
|
|
return 0;
|
|
|
|
TRACE(local, "%04x %d %04x ds=%04x\n",
|
|
handle, size, flags, ds );
|
|
if (!(pInfo = LOCAL_GetHeap( ds ))) return 0;
|
|
|
|
if (HANDLE_FIXED( handle ))
|
|
blockhandle = handle;
|
|
else
|
|
{
|
|
pEntry = (LOCALHANDLEENTRY *) (ptr + handle);
|
|
if(pEntry->flags == (LMEM_DISCARDED >> 8))
|
|
{
|
|
HLOCAL16 hl;
|
|
if(pEntry->addr)
|
|
WARN(local,"Dicarded block has non-zero addr.\n");
|
|
TRACE(local, "ReAllocating discarded block\n");
|
|
if(size <= 4) size = 5;
|
|
if (!(hl = LOCAL_GetBlock( ds, size + sizeof(HLOCAL16), flags)))
|
|
return 0;
|
|
ptr = PTR_SEG_OFF_TO_LIN( ds, 0 ); /* Reload ptr */
|
|
pEntry = (LOCALHANDLEENTRY *) (ptr + handle);
|
|
pEntry->addr = hl + sizeof(HLOCAL16);
|
|
pEntry->flags = 0;
|
|
pEntry->lock = 0;
|
|
*(HLOCAL16 *)(ptr + hl) = handle;
|
|
return handle;
|
|
}
|
|
if (((blockhandle = pEntry->addr) & 3) != 2)
|
|
{
|
|
ERR(local, "(%04x,%04x): invalid handle\n",
|
|
ds, handle );
|
|
return 0;
|
|
}
|
|
if(*((HLOCAL16 *)(ptr + blockhandle) - 1) != handle) {
|
|
ERR(local, "Back ptr to handle is invalid\n");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (flags & LMEM_MODIFY)
|
|
{
|
|
if (HANDLE_MOVEABLE(handle))
|
|
{
|
|
pEntry = (LOCALHANDLEENTRY *)(ptr + handle);
|
|
pEntry->flags = (flags & 0x0f00) >> 8;
|
|
TRACE(local, "Changing flags to %x.\n", pEntry->flags);
|
|
}
|
|
return handle;
|
|
}
|
|
|
|
if (!size)
|
|
{
|
|
if (flags & LMEM_MOVEABLE)
|
|
{
|
|
if (HANDLE_FIXED(handle))
|
|
{
|
|
TRACE(local, "Freeing fixed block.\n");
|
|
return LOCAL_Free( ds, handle );
|
|
}
|
|
else /* Moveable block */
|
|
{
|
|
pEntry = (LOCALHANDLEENTRY *)(ptr + handle);
|
|
if (pEntry->lock == 0)
|
|
{
|
|
/* discards moveable blocks */
|
|
TRACE(local,"Discarding block\n");
|
|
LOCAL_FreeArena(ds, ARENA_HEADER(pEntry->addr));
|
|
pEntry->addr = 0;
|
|
pEntry->flags = (LMEM_DISCARDED >> 8);
|
|
return handle;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
else if(flags == 0)
|
|
{
|
|
pEntry = (LOCALHANDLEENTRY *)(ptr + handle);
|
|
if (pEntry->lock == 0)
|
|
{
|
|
/* Frees block */
|
|
return LOCAL_Free( ds, handle );
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
arena = ARENA_HEADER( blockhandle );
|
|
TRACE(local, "arena is %04x\n", arena );
|
|
pArena = ARENA_PTR( ptr, arena );
|
|
|
|
if(size <= 4) size = 5;
|
|
oldsize = pArena->next - arena - ARENA_HEADER_SIZE;
|
|
nextarena = LALIGN(blockhandle + size);
|
|
|
|
/* Check for size reduction */
|
|
|
|
if (nextarena <= pArena->next)
|
|
{
|
|
TRACE(local, "size reduction, making new free block\n");
|
|
LOCAL_ShrinkArena(ds, arena, nextarena - arena);
|
|
TRACE(local, "returning %04x\n", handle );
|
|
return handle;
|
|
}
|
|
|
|
/* Check if the next block is free and large enough */
|
|
|
|
pNext = ARENA_PTR( ptr, pArena->next );
|
|
if (((pNext->prev & 3) == LOCAL_ARENA_FREE) &&
|
|
(nextarena <= pNext->next))
|
|
{
|
|
TRACE(local, "size increase, making new free block\n");
|
|
LOCAL_GrowArenaUpward(ds, arena, nextarena - arena);
|
|
TRACE(local, "returning %04x\n", handle );
|
|
return handle;
|
|
}
|
|
|
|
/* Now we have to allocate a new block, but not if (fixed block or locked
|
|
block) and no LMEM_MOVEABLE */
|
|
|
|
if (!(flags & LMEM_MOVEABLE))
|
|
{
|
|
if (HANDLE_FIXED(handle))
|
|
{
|
|
ERR(local, "Needed to move fixed block, but LMEM_MOVEABLE not specified.\n");
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
if(((LOCALHANDLEENTRY *)(ptr + handle))->lock != 0)
|
|
{
|
|
ERR(local, "Needed to move locked block, but LMEM_MOVEABLE not specified.\n");
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
if(HANDLE_MOVEABLE(handle)) size += sizeof(HLOCAL16);
|
|
hmem = LOCAL_GetBlock( ds, size, flags );
|
|
ptr = PTR_SEG_OFF_TO_LIN( ds, 0 ); /* Reload ptr */
|
|
if(HANDLE_MOVEABLE(handle)) /* LOCAL_GetBlock might have triggered */
|
|
{ /* a compaction, which might in turn have */
|
|
blockhandle = pEntry->addr ; /* moved the very block we are resizing */
|
|
arena = ARENA_HEADER( blockhandle ); /* thus, we reload arena, too */
|
|
}
|
|
if (!hmem)
|
|
{
|
|
/* Remove the block from the heap and try again */
|
|
LPSTR buffer = HeapAlloc( GetProcessHeap(), 0, oldsize );
|
|
if (!buffer) return 0;
|
|
memcpy( buffer, ptr + arena + ARENA_HEADER_SIZE, oldsize );
|
|
LOCAL_FreeArena( ds, arena );
|
|
if (!(hmem = LOCAL_GetBlock( ds, size, flags )))
|
|
{
|
|
if (!(hmem = LOCAL_GetBlock( ds, oldsize, flags )))
|
|
{
|
|
ERR(local, "Can't restore saved block\n" );
|
|
HeapFree( GetProcessHeap(), 0, buffer );
|
|
return 0;
|
|
}
|
|
size = oldsize;
|
|
}
|
|
ptr = PTR_SEG_OFF_TO_LIN( ds, 0 ); /* Reload ptr */
|
|
memcpy( ptr + hmem, buffer, oldsize );
|
|
HeapFree( GetProcessHeap(), 0, buffer );
|
|
}
|
|
else
|
|
{
|
|
memcpy( ptr + hmem, ptr + (arena + ARENA_HEADER_SIZE), oldsize );
|
|
LOCAL_FreeArena( ds, arena );
|
|
}
|
|
if (HANDLE_MOVEABLE( handle ))
|
|
{
|
|
TRACE(local, "fixing handle\n");
|
|
pEntry = (LOCALHANDLEENTRY *)(ptr + handle);
|
|
pEntry->addr = hmem + sizeof(HLOCAL16);
|
|
/* Back ptr should still be correct */
|
|
if(*(HLOCAL16 *)(ptr + hmem) != handle)
|
|
ERR(local, "back ptr is invalid.\n");
|
|
hmem = handle;
|
|
}
|
|
if (size == oldsize) hmem = 0; /* Realloc failed */
|
|
TRACE(local, "returning %04x\n", hmem );
|
|
return hmem;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_InternalLock
|
|
*/
|
|
static HLOCAL16 LOCAL_InternalLock( LPSTR heap, HLOCAL16 handle )
|
|
{
|
|
HLOCAL16 old_handle = handle;
|
|
|
|
if (HANDLE_MOVEABLE(handle))
|
|
{
|
|
LOCALHANDLEENTRY *pEntry = (LOCALHANDLEENTRY *)(heap + handle);
|
|
if (pEntry->flags == LMEM_DISCARDED) return 0;
|
|
if (pEntry->lock < 0xfe) pEntry->lock++;
|
|
handle = pEntry->addr;
|
|
}
|
|
TRACE(local, "%04x returning %04x\n",
|
|
old_handle, handle );
|
|
return handle;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_Lock
|
|
*/
|
|
LPSTR LOCAL_Lock( HANDLE16 ds, HLOCAL16 handle )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
return handle ? ptr + LOCAL_InternalLock( ptr, handle ) : NULL;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_LockSegptr
|
|
*/
|
|
SEGPTR LOCAL_LockSegptr( HANDLE16 ds, HLOCAL16 handle )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
return PTR_SEG_OFF_TO_SEGPTR( ds, LOCAL_InternalLock( ptr, handle ) );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_Unlock
|
|
*/
|
|
BOOL16 LOCAL_Unlock( HANDLE16 ds, HLOCAL16 handle )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
|
|
TRACE(local, "%04x\n", handle );
|
|
if (HANDLE_MOVEABLE(handle))
|
|
{
|
|
LOCALHANDLEENTRY *pEntry = (LOCALHANDLEENTRY *)(ptr + handle);
|
|
if (!pEntry->lock || (pEntry->lock == 0xff)) return FALSE;
|
|
/* For moveable block, return the new lock count */
|
|
/* (see _Windows_Internals_ p. 197) */
|
|
return --pEntry->lock;
|
|
}
|
|
else return FALSE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_Size
|
|
*
|
|
* Implementation of LocalSize().
|
|
*/
|
|
WORD LOCAL_Size( HANDLE16 ds, HLOCAL16 handle )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( CURRENT_DS, 0 );
|
|
LOCALARENA *pArena;
|
|
|
|
TRACE(local, "%04x ds=%04x\n", handle, ds );
|
|
|
|
if (HANDLE_MOVEABLE( handle )) handle = *(WORD *)(ptr + handle);
|
|
if (!handle) return 0;
|
|
pArena = ARENA_PTR( ptr, ARENA_HEADER(handle) );
|
|
return pArena->next - handle;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_Flags
|
|
*
|
|
* Implementation of LocalFlags().
|
|
*/
|
|
WORD LOCAL_Flags( HANDLE16 ds, HLOCAL16 handle )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
|
|
if (HANDLE_MOVEABLE(handle))
|
|
{
|
|
LOCALHANDLEENTRY *pEntry = (LOCALHANDLEENTRY *)(ptr + handle);
|
|
TRACE(local, "(%04x,%04x): returning %04x\n",
|
|
ds, handle, pEntry->lock | (pEntry->flags << 8) );
|
|
return pEntry->lock | (pEntry->flags << 8);
|
|
}
|
|
else
|
|
{
|
|
TRACE(local, "(%04x,%04x): returning 0\n",
|
|
ds, handle );
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_HeapSize
|
|
*
|
|
* Implementation of LocalHeapSize().
|
|
*/
|
|
WORD LOCAL_HeapSize( HANDLE16 ds )
|
|
{
|
|
LOCALHEAPINFO *pInfo = LOCAL_GetHeap( ds );
|
|
if (!pInfo) return 0;
|
|
return pInfo->last - pInfo->first;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_CountFree
|
|
*
|
|
* Implementation of LocalCountFree().
|
|
*/
|
|
WORD LOCAL_CountFree( HANDLE16 ds )
|
|
{
|
|
WORD arena, total;
|
|
LOCALARENA *pArena;
|
|
LOCALHEAPINFO *pInfo;
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
|
|
if (!(pInfo = LOCAL_GetHeap( ds )))
|
|
{
|
|
ERR(local, "(%04x): Local heap not found\n", ds );
|
|
LOCAL_PrintHeap( ds );
|
|
return 0;
|
|
}
|
|
|
|
total = 0;
|
|
arena = pInfo->first;
|
|
pArena = ARENA_PTR( ptr, arena );
|
|
for (;;)
|
|
{
|
|
arena = pArena->free_next;
|
|
pArena = ARENA_PTR( ptr, arena );
|
|
if (arena == pArena->free_next) break;
|
|
total += pArena->size;
|
|
}
|
|
TRACE(local, "(%04x): returning %d\n", ds, total);
|
|
return total;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LOCAL_Handle
|
|
*
|
|
* Implementation of LocalHandle().
|
|
*/
|
|
HLOCAL16 LOCAL_Handle( HANDLE16 ds, WORD addr )
|
|
{
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALHEAPINFO *pInfo;
|
|
WORD table;
|
|
|
|
if (!(pInfo = LOCAL_GetHeap( ds )))
|
|
{
|
|
ERR(local, "(%04x): Local heap not found\n", ds );
|
|
LOCAL_PrintHeap( ds );
|
|
return 0;
|
|
}
|
|
|
|
/* Find the address in the entry tables */
|
|
|
|
table = pInfo->htable;
|
|
while (table)
|
|
{
|
|
WORD count = *(WORD *)(ptr + table);
|
|
LOCALHANDLEENTRY *pEntry = (LOCALHANDLEENTRY*)(ptr+table+sizeof(WORD));
|
|
for (; count > 0; count--, pEntry++)
|
|
if (pEntry->addr == addr) return (HLOCAL16)((char *)pEntry - ptr);
|
|
table = *(WORD *)pEntry;
|
|
}
|
|
|
|
return (HLOCAL16)addr; /* Fixed block handle is addr */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalAlloc16 (KERNEL.5)
|
|
*/
|
|
HLOCAL16 WINAPI LocalAlloc16( UINT16 flags, WORD size )
|
|
{
|
|
return LOCAL_Alloc( CURRENT_DS, flags, size );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* WIN16_LocalAlloc
|
|
*/
|
|
void WINAPI WIN16_LocalAlloc( CONTEXT *context )
|
|
{
|
|
WORD *stack = PTR_SEG_OFF_TO_LIN(SS_reg(context), SP_reg(context));
|
|
UINT16 flags = (UINT16)stack[3];
|
|
WORD size = (WORD)stack[2];
|
|
TRACE(local,"WIN16LocalAlloc: %04x %d \n", flags, size);
|
|
AX_reg(context) = CX_reg(context) = LOCAL_Alloc( DS_reg(context), flags, size );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalReAlloc16 (KERNEL.6)
|
|
*/
|
|
HLOCAL16 WINAPI LocalReAlloc16( HLOCAL16 handle, WORD size, UINT16 flags )
|
|
{
|
|
return LOCAL_ReAlloc( CURRENT_DS, handle, size, flags );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalFree16 (KERNEL.7)
|
|
*/
|
|
HLOCAL16 WINAPI LocalFree16( HLOCAL16 handle )
|
|
{
|
|
return LOCAL_Free( CURRENT_DS, handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalLock16 (KERNEL.8)
|
|
*
|
|
* Note: only the offset part of the pointer is returned by the relay code.
|
|
*/
|
|
SEGPTR WINAPI LocalLock16( HLOCAL16 handle )
|
|
{
|
|
return LOCAL_LockSegptr( CURRENT_DS, handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalUnlock16 (KERNEL.9)
|
|
*/
|
|
BOOL16 WINAPI LocalUnlock16( HLOCAL16 handle )
|
|
{
|
|
return LOCAL_Unlock( CURRENT_DS, handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalSize16 (KERNEL.10)
|
|
*/
|
|
UINT16 WINAPI LocalSize16( HLOCAL16 handle )
|
|
{
|
|
return LOCAL_Size( CURRENT_DS, handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalHandle16 (KERNEL.11)
|
|
*/
|
|
HLOCAL16 WINAPI LocalHandle16( WORD addr )
|
|
{
|
|
return LOCAL_Handle( CURRENT_DS, addr );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalFlags16 (KERNEL.12)
|
|
*/
|
|
UINT16 WINAPI LocalFlags16( HLOCAL16 handle )
|
|
{
|
|
return LOCAL_Flags( CURRENT_DS, handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalCompact16 (KERNEL.13)
|
|
*/
|
|
UINT16 WINAPI LocalCompact16( UINT16 minfree )
|
|
{
|
|
TRACE(local, "%04x\n", minfree );
|
|
return LOCAL_Compact( CURRENT_DS, minfree, 0 );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalNotify (KERNEL.14)
|
|
*
|
|
* Installs a callback function that is called for local memory events
|
|
* Callback function prototype is
|
|
* BOOL16 NotifyFunc(WORD wMsg, HLOCAL16 hMem, WORD wArg)
|
|
* wMsg:
|
|
* - LN_OUTOFMEM
|
|
* NotifyFunc seems to be responsible for allocating some memory,
|
|
* returns TRUE for success.
|
|
* wArg = number of bytes needed additionally
|
|
* - LN_MOVE
|
|
* hMem = handle; wArg = old mem location
|
|
* - LN_DISCARD
|
|
* NotifyFunc seems to be strongly encouraged to return TRUE,
|
|
* otherwise LogError() gets called.
|
|
* hMem = handle; wArg = flags
|
|
*/
|
|
FARPROC16 WINAPI LocalNotify( FARPROC16 func )
|
|
{
|
|
LOCALHEAPINFO *pInfo;
|
|
FARPROC16 oldNotify;
|
|
HANDLE16 ds = CURRENT_DS;
|
|
|
|
if (!(pInfo = LOCAL_GetHeap( ds )))
|
|
{
|
|
ERR(local, "(%04x): Local heap not found\n", ds );
|
|
LOCAL_PrintHeap( ds );
|
|
return 0;
|
|
}
|
|
TRACE(local, "(%04x): %08lx\n", ds, (DWORD)func );
|
|
FIXME(local, "Half implemented\n");
|
|
oldNotify = pInfo->notify;
|
|
pInfo->notify = func;
|
|
return oldNotify;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalShrink16 (KERNEL.121)
|
|
*/
|
|
UINT16 WINAPI LocalShrink16( HGLOBAL16 handle, UINT16 newsize )
|
|
{
|
|
TRACE(local, "%04x %04x\n", handle, newsize );
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetHeapSpaces (KERNEL.138)
|
|
*/
|
|
DWORD WINAPI GetHeapSpaces( HMODULE16 module )
|
|
{
|
|
NE_MODULE *pModule;
|
|
WORD ds;
|
|
|
|
if (!(pModule = NE_GetPtr( module ))) return 0;
|
|
ds =
|
|
GlobalHandleToSel((NE_SEG_TABLE( pModule ) + pModule->dgroup - 1)->hSeg);
|
|
return MAKELONG( LOCAL_CountFree( ds ), LOCAL_HeapSize( ds ) );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalCountFree (KERNEL.161)
|
|
*/
|
|
WORD WINAPI LocalCountFree(void)
|
|
{
|
|
return LOCAL_CountFree( CURRENT_DS );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalHeapSize (KERNEL.162)
|
|
*/
|
|
WORD WINAPI LocalHeapSize(void)
|
|
{
|
|
TRACE(local, "(void)\n" );
|
|
return LOCAL_HeapSize( CURRENT_DS );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalHandleDelta (KERNEL.310)
|
|
*/
|
|
WORD WINAPI LocalHandleDelta( WORD delta )
|
|
{
|
|
LOCALHEAPINFO *pInfo;
|
|
|
|
if (!(pInfo = LOCAL_GetHeap( CURRENT_DS )))
|
|
{
|
|
ERR(local, "Local heap not found\n");
|
|
LOCAL_PrintHeap( CURRENT_DS );
|
|
return 0;
|
|
}
|
|
if (delta) pInfo->hdelta = delta;
|
|
TRACE(local, "returning %04x\n", pInfo->hdelta);
|
|
return pInfo->hdelta;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalInfo (TOOLHELP.56)
|
|
*/
|
|
BOOL16 WINAPI LocalInfo( LOCALINFO *pLocalInfo, HGLOBAL16 handle )
|
|
{
|
|
LOCALHEAPINFO *pInfo = LOCAL_GetHeap(SELECTOROF(WIN16_GlobalLock16(handle)));
|
|
if (!pInfo) return FALSE;
|
|
pLocalInfo->wcItems = pInfo->items;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalFirst (TOOLHELP.57)
|
|
*/
|
|
BOOL16 WINAPI LocalFirst( LOCALENTRY *pLocalEntry, HGLOBAL16 handle )
|
|
{
|
|
WORD ds = GlobalHandleToSel( handle );
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALHEAPINFO *pInfo = LOCAL_GetHeap( ds );
|
|
if (!pInfo) return FALSE;
|
|
|
|
pLocalEntry->hHandle = pInfo->first + ARENA_HEADER_SIZE;
|
|
pLocalEntry->wAddress = pLocalEntry->hHandle;
|
|
pLocalEntry->wFlags = LF_FIXED;
|
|
pLocalEntry->wcLock = 0;
|
|
pLocalEntry->wType = LT_NORMAL;
|
|
pLocalEntry->hHeap = handle;
|
|
pLocalEntry->wHeapType = NORMAL_HEAP;
|
|
pLocalEntry->wNext = ARENA_PTR(ptr,pInfo->first)->next;
|
|
pLocalEntry->wSize = pLocalEntry->wNext - pLocalEntry->hHandle;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalNext (TOOLHELP.58)
|
|
*/
|
|
BOOL16 WINAPI LocalNext( LOCALENTRY *pLocalEntry )
|
|
{
|
|
WORD ds = GlobalHandleToSel( pLocalEntry->hHeap );
|
|
char *ptr = PTR_SEG_OFF_TO_LIN( ds, 0 );
|
|
LOCALARENA *pArena;
|
|
|
|
if (!LOCAL_GetHeap( ds )) return FALSE;
|
|
if (!pLocalEntry->wNext) return FALSE;
|
|
pArena = ARENA_PTR( ptr, pLocalEntry->wNext );
|
|
|
|
pLocalEntry->hHandle = pLocalEntry->wNext + ARENA_HEADER_SIZE;
|
|
pLocalEntry->wAddress = pLocalEntry->hHandle;
|
|
pLocalEntry->wFlags = (pArena->prev & 3) + 1;
|
|
pLocalEntry->wcLock = 0;
|
|
pLocalEntry->wType = LT_NORMAL;
|
|
if (pArena->next != pLocalEntry->wNext) /* last one? */
|
|
pLocalEntry->wNext = pArena->next;
|
|
else
|
|
pLocalEntry->wNext = 0;
|
|
pLocalEntry->wSize = pLocalEntry->wNext - pLocalEntry->hHandle;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalAlloc32 (KERNEL32.371)
|
|
* RETURNS
|
|
* Handle: Success
|
|
* NULL: Failure
|
|
*/
|
|
HLOCAL32 WINAPI LocalAlloc32(
|
|
UINT32 flags, /* [in] Allocation attributes */
|
|
DWORD size /* [in] Number of bytes to allocate */
|
|
) {
|
|
return (HLOCAL32)GlobalAlloc32( flags, size );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalCompact32 (KERNEL32.372)
|
|
*/
|
|
UINT32 WINAPI LocalCompact32( UINT32 minfree )
|
|
{
|
|
return 0; /* LocalCompact does nothing in Win32 */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalFlags32 (KERNEL32.374)
|
|
* RETURNS
|
|
* Value specifying allocation flags and lock count.
|
|
* LMEM_INVALID_HANDLE: Failure
|
|
*/
|
|
UINT32 WINAPI LocalFlags32(
|
|
HLOCAL32 handle /* [in] Handle of memory object */
|
|
) {
|
|
return GlobalFlags32( (HGLOBAL32)handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalFree32 (KERNEL32.375)
|
|
* RETURNS
|
|
* NULL: Success
|
|
* Handle: Failure
|
|
*/
|
|
HLOCAL32 WINAPI LocalFree32(
|
|
HLOCAL32 handle /* [in] Handle of memory object */
|
|
) {
|
|
return (HLOCAL32)GlobalFree32( (HGLOBAL32)handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalHandle32 (KERNEL32.376)
|
|
* RETURNS
|
|
* Handle: Success
|
|
* NULL: Failure
|
|
*/
|
|
HLOCAL32 WINAPI LocalHandle32(
|
|
LPCVOID ptr /* [in] Address of local memory object */
|
|
) {
|
|
return (HLOCAL32)GlobalHandle32( ptr );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalLock32 (KERNEL32.377)
|
|
* Locks a local memory object and returns pointer to the first byte
|
|
* of the memory block.
|
|
*
|
|
* RETURNS
|
|
* Pointer: Success
|
|
* NULL: Failure
|
|
*/
|
|
LPVOID WINAPI LocalLock32(
|
|
HLOCAL32 handle /* [in] Address of local memory object */
|
|
) {
|
|
return GlobalLock32( (HGLOBAL32)handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalReAlloc32 (KERNEL32.378)
|
|
* RETURNS
|
|
* Handle: Success
|
|
* NULL: Failure
|
|
*/
|
|
HLOCAL32 WINAPI LocalReAlloc32(
|
|
HLOCAL32 handle, /* [in] Handle of memory object */
|
|
DWORD size, /* [in] New size of block */
|
|
UINT32 flags /* [in] How to reallocate object */
|
|
) {
|
|
return (HLOCAL32)GlobalReAlloc32( (HGLOBAL32)handle, size, flags );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalShrink32 (KERNEL32.379)
|
|
*/
|
|
UINT32 WINAPI LocalShrink32( HGLOBAL32 handle, UINT32 newsize )
|
|
{
|
|
return 0; /* LocalShrink does nothing in Win32 */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalSize32 (KERNEL32.380)
|
|
* RETURNS
|
|
* Size: Success
|
|
* 0: Failure
|
|
*/
|
|
UINT32 WINAPI LocalSize32(
|
|
HLOCAL32 handle /* [in] Handle of memory object */
|
|
) {
|
|
return GlobalSize32( (HGLOBAL32)handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LocalUnlock32 (KERNEL32.381)
|
|
* RETURNS
|
|
* TRUE: Object is still locked
|
|
* FALSE: Object is unlocked
|
|
*/
|
|
BOOL32 WINAPI LocalUnlock32(
|
|
HLOCAL32 handle /* [in] Handle of memory object */
|
|
) {
|
|
return GlobalUnlock32( (HGLOBAL32)handle );
|
|
}
|