1520 lines
41 KiB
C
1520 lines
41 KiB
C
/*
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* Global heap functions
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*
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* Copyright 1995 Alexandre Julliard
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*/
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/* 0xffff sometimes seems to mean: CURRENT_DS */
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#include <sys/types.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include "wine/winbase16.h"
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#include "global.h"
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#include "heap.h"
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#include "toolhelp.h"
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#include "selectors.h"
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#include "miscemu.h"
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#include "stackframe.h"
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#include "module.h"
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#include "debugtools.h"
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#include "winerror.h"
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DEFAULT_DEBUG_CHANNEL(global)
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/* Global arena block */
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typedef struct
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{
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DWORD base; /* Base address (0 if discarded) */
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DWORD size; /* Size in bytes (0 indicates a free block) */
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HGLOBAL16 handle; /* Handle for this block */
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HGLOBAL16 hOwner; /* Owner of this block */
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BYTE lockCount; /* Count of GlobalFix() calls */
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BYTE pageLockCount; /* Count of GlobalPageLock() calls */
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BYTE flags; /* Allocation flags */
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BYTE selCount; /* Number of selectors allocated for this block */
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} GLOBALARENA;
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/* Flags definitions */
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#define GA_MOVEABLE 0x02 /* same as GMEM_MOVEABLE */
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#define GA_DGROUP 0x04
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#define GA_DISCARDABLE 0x08
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#define GA_IPCSHARE 0x10 /* same as GMEM_DDESHARE */
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/* Arena array */
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static GLOBALARENA *pGlobalArena = NULL;
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static int globalArenaSize = 0;
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#define GLOBAL_MAX_ALLOC_SIZE 0x00ff0000 /* Largest allocation is 16M - 64K */
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#define VALID_HANDLE(handle) (((handle)>>__AHSHIFT)<globalArenaSize)
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#define GET_ARENA_PTR(handle) (pGlobalArena + ((handle) >> __AHSHIFT))
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/***********************************************************************
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* GLOBAL_GetArena
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*
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* Return the arena for a given selector, growing the arena array if needed.
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*/
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static GLOBALARENA *GLOBAL_GetArena( WORD sel, WORD selcount )
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{
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if (((sel >> __AHSHIFT) + selcount) > globalArenaSize)
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{
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int newsize = ((sel >> __AHSHIFT) + selcount + 0xff) & ~0xff;
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GLOBALARENA *pNewArena = realloc( pGlobalArena,
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newsize * sizeof(GLOBALARENA) );
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if (!pNewArena) return 0;
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pGlobalArena = pNewArena;
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memset( pGlobalArena + globalArenaSize, 0,
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(newsize - globalArenaSize) * sizeof(GLOBALARENA) );
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globalArenaSize = newsize;
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}
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return pGlobalArena + (sel >> __AHSHIFT);
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}
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void debug_handles(void)
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{
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int printed=0;
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int i;
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for (i = globalArenaSize-1 ; i>=0 ; i--) {
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if (pGlobalArena[i].size!=0 && (pGlobalArena[i].handle & 0x8000)){
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printed=1;
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DPRINTF("0x%08x, ",pGlobalArena[i].handle);
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}
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}
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if (printed)
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DPRINTF("\n");
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}
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/***********************************************************************
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* GLOBAL_CreateBlock
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*
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* Create a global heap block for a fixed range of linear memory.
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*/
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HGLOBAL16 GLOBAL_CreateBlock( WORD flags, const void *ptr, DWORD size,
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HGLOBAL16 hOwner, BOOL16 isCode,
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BOOL16 is32Bit, BOOL16 isReadOnly,
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SHMDATA *shmdata )
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{
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WORD sel, selcount;
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GLOBALARENA *pArena;
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/* Allocate the selector(s) */
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sel = SELECTOR_AllocBlock( ptr, size,
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isCode ? SEGMENT_CODE : SEGMENT_DATA,
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is32Bit, isReadOnly );
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if (!sel) return 0;
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selcount = (size + 0xffff) / 0x10000;
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if (!(pArena = GLOBAL_GetArena( sel, selcount )))
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{
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SELECTOR_FreeBlock( sel, selcount );
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return 0;
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}
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/* Fill the arena block */
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pArena->base = (DWORD)ptr;
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pArena->size = GET_SEL_LIMIT(sel) + 1;
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pArena->handle = (flags & GMEM_MOVEABLE) ? sel - 1 : sel;
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pArena->hOwner = hOwner;
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pArena->lockCount = 0;
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pArena->pageLockCount = 0;
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pArena->flags = flags & GA_MOVEABLE;
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if (flags & GMEM_DISCARDABLE) pArena->flags |= GA_DISCARDABLE;
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if (flags & GMEM_DDESHARE) pArena->flags |= GA_IPCSHARE;
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if (!isCode) pArena->flags |= GA_DGROUP;
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pArena->selCount = selcount;
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if (selcount > 1) /* clear the next arena blocks */
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memset( pArena + 1, 0, (selcount - 1) * sizeof(GLOBALARENA) );
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return pArena->handle;
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}
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/***********************************************************************
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* GLOBAL_FreeBlock
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*
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* Free a block allocated by GLOBAL_CreateBlock, without touching
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* the associated linear memory range.
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*/
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BOOL16 GLOBAL_FreeBlock( HGLOBAL16 handle )
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{
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WORD sel;
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GLOBALARENA *pArena;
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if (!handle) return TRUE;
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sel = GlobalHandleToSel16( handle );
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if (!VALID_HANDLE(sel))
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return FALSE;
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pArena = GET_ARENA_PTR(sel);
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SELECTOR_FreeBlock( sel, (pArena->size + 0xffff) / 0x10000 );
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memset( pArena, 0, sizeof(GLOBALARENA) );
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return TRUE;
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}
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/***********************************************************************
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* GLOBAL_MoveBlock
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*/
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BOOL16 GLOBAL_MoveBlock( HGLOBAL16 handle, const void *ptr, DWORD size )
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{
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WORD sel;
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GLOBALARENA *pArena;
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if (!handle) return TRUE;
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sel = GlobalHandleToSel16( handle );
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if (!VALID_HANDLE(sel))
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return FALSE;
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pArena = GET_ARENA_PTR(sel);
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if (pArena->selCount != 1)
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return FALSE;
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pArena->base = (DWORD)ptr;
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pArena->size = size;
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SELECTOR_MoveBlock( sel, ptr );
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SetSelectorLimit16( sel, size-1 );
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return TRUE;
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}
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/***********************************************************************
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* GLOBAL_Alloc
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*
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* Implementation of GlobalAlloc16()
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*/
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HGLOBAL16 GLOBAL_Alloc( UINT16 flags, DWORD size, HGLOBAL16 hOwner,
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BOOL16 isCode, BOOL16 is32Bit, BOOL16 isReadOnly )
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{
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void *ptr;
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HGLOBAL16 handle;
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SHMDATA shmdata;
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TRACE("%ld flags=%04x\n", size, flags );
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/* If size is 0, create a discarded block */
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if (size == 0) return GLOBAL_CreateBlock( flags, NULL, 1, hOwner, isCode,
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is32Bit, isReadOnly, NULL );
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/* Fixup the size */
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if (size >= GLOBAL_MAX_ALLOC_SIZE - 0x1f) return 0;
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size = (size + 0x1f) & ~0x1f;
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/* Allocate the linear memory */
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ptr = HeapAlloc( SystemHeap, 0, size );
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/* FIXME: free discardable blocks and try again? */
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if (!ptr) return 0;
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/* Allocate the selector(s) */
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handle = GLOBAL_CreateBlock( flags, ptr, size, hOwner,
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isCode, is32Bit, isReadOnly, &shmdata);
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if (!handle)
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{
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HeapFree( SystemHeap, 0, ptr );
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return 0;
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}
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if (flags & GMEM_ZEROINIT) memset( ptr, 0, size );
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return handle;
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}
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/***********************************************************************
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* GlobalAlloc16 (KERNEL.15)
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* RETURNS
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* Handle: Success
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* NULL: Failure
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*/
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HGLOBAL16 WINAPI GlobalAlloc16(
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UINT16 flags, /* [in] Object allocation attributes */
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DWORD size /* [in] Number of bytes to allocate */
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) {
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HANDLE16 owner = GetCurrentPDB16();
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if (flags & GMEM_DDESHARE)
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owner = GetExePtr(owner); /* Make it a module handle */
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return GLOBAL_Alloc( flags, size, owner, FALSE, FALSE, FALSE );
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}
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/***********************************************************************
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* GlobalReAlloc16 (KERNEL.16)
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* RETURNS
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* Handle: Success
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* NULL: Failure
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*/
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HGLOBAL16 WINAPI GlobalReAlloc16(
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HGLOBAL16 handle, /* [in] Handle of global memory object */
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DWORD size, /* [in] New size of block */
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UINT16 flags /* [in] How to reallocate object */
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) {
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WORD selcount;
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DWORD oldsize;
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void *ptr;
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GLOBALARENA *pArena, *pNewArena;
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WORD sel = GlobalHandleToSel16( handle );
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TRACE("%04x %ld flags=%04x\n",
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handle, size, flags );
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if (!handle) return 0;
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if (!VALID_HANDLE(handle)) {
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WARN("Invalid handle 0x%04x!\n", handle);
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return 0;
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}
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pArena = GET_ARENA_PTR( handle );
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/* Discard the block if requested */
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if ((size == 0) && (flags & GMEM_MOVEABLE) && !(flags & GMEM_MODIFY))
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{
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if (!(pArena->flags & GA_MOVEABLE) ||
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!(pArena->flags & GA_DISCARDABLE) ||
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(pArena->lockCount > 0) || (pArena->pageLockCount > 0)) return 0;
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HeapFree( SystemHeap, 0, (void *)pArena->base );
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pArena->base = 0;
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/* Note: we rely on the fact that SELECTOR_ReallocBlock won't
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* change the selector if we are shrinking the block.
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* FIXME: shouldn't we keep selectors until the block is deleted?
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*/
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SELECTOR_ReallocBlock( sel, 0, 1 );
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return handle;
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}
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/* Fixup the size */
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if (size > GLOBAL_MAX_ALLOC_SIZE - 0x20) return 0;
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if (size == 0) size = 0x20;
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else size = (size + 0x1f) & ~0x1f;
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/* Change the flags */
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if (flags & GMEM_MODIFY)
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{
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/* Change the flags, leaving GA_DGROUP alone */
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pArena->flags = (pArena->flags & GA_DGROUP) | (flags & GA_MOVEABLE);
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if (flags & GMEM_DISCARDABLE) pArena->flags |= GA_DISCARDABLE;
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return handle;
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}
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/* Reallocate the linear memory */
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ptr = (void *)pArena->base;
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oldsize = pArena->size;
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TRACE("oldsize %08lx\n",oldsize);
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if (ptr && (size == oldsize)) return handle; /* Nothing to do */
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if (((char *)ptr >= DOSMEM_MemoryBase(0)) &&
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((char *)ptr <= DOSMEM_MemoryBase(0) + 0x100000))
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ptr = DOSMEM_ResizeBlock(0, ptr, size, NULL);
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else
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ptr = HeapReAlloc( SystemHeap, 0, ptr, size );
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if (!ptr)
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{
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SELECTOR_FreeBlock( sel, (oldsize + 0xffff) / 0x10000 );
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memset( pArena, 0, sizeof(GLOBALARENA) );
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return 0;
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}
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/* Reallocate the selector(s) */
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sel = SELECTOR_ReallocBlock( sel, ptr, size );
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if (!sel)
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{
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HeapFree( SystemHeap, 0, ptr );
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memset( pArena, 0, sizeof(GLOBALARENA) );
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return 0;
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}
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selcount = (size + 0xffff) / 0x10000;
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if (!(pNewArena = GLOBAL_GetArena( sel, selcount )))
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{
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HeapFree( SystemHeap, 0, ptr );
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SELECTOR_FreeBlock( sel, selcount );
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return 0;
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}
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/* Fill the new arena block */
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if (pNewArena != pArena) memcpy( pNewArena, pArena, sizeof(GLOBALARENA) );
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pNewArena->base = (DWORD)ptr;
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pNewArena->size = GET_SEL_LIMIT(sel) + 1;
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pNewArena->selCount = selcount;
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pNewArena->handle = (pNewArena->flags & GA_MOVEABLE) ? sel - 1 : sel;
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if (selcount > 1) /* clear the next arena blocks */
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memset( pNewArena + 1, 0, (selcount - 1) * sizeof(GLOBALARENA) );
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if ((oldsize < size) && (flags & GMEM_ZEROINIT))
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memset( (char *)ptr + oldsize, 0, size - oldsize );
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return pNewArena->handle;
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}
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/***********************************************************************
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* GlobalFree16 (KERNEL.17)
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* RETURNS
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* NULL: Success
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* Handle: Failure
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*/
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HGLOBAL16 WINAPI GlobalFree16(
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HGLOBAL16 handle /* [in] Handle of global memory object */
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) {
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void *ptr;
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if (!VALID_HANDLE(handle)) {
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WARN("Invalid handle 0x%04x passed to GlobalFree16!\n",handle);
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return 0;
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}
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ptr = (void *)GET_ARENA_PTR(handle)->base;
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TRACE("%04x\n", handle );
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if (!GLOBAL_FreeBlock( handle )) return handle; /* failed */
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if (ptr) HeapFree( SystemHeap, 0, ptr );
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return 0;
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}
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/***********************************************************************
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* WIN16_GlobalLock16 (KERNEL.18)
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*
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* This is the GlobalLock16() function used by 16-bit code.
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*/
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SEGPTR WINAPI WIN16_GlobalLock16( HGLOBAL16 handle )
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{
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WORD sel = GlobalHandleToSel16( handle );
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TRACE("(%04x) -> %08lx\n", handle, MAKELONG( 0, sel ) );
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if (handle)
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{
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if (handle == (HGLOBAL16)-1) handle = CURRENT_DS;
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if (!VALID_HANDLE(handle)) {
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WARN("Invalid handle 0x%04x passed to WIN16_GlobalLock16!\n",handle);
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sel = 0;
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}
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else if (!GET_ARENA_PTR(handle)->base)
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sel = 0;
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else
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GET_ARENA_PTR(handle)->lockCount++;
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}
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CURRENT_STACK16->ecx = sel; /* selector must be returned in CX as well */
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return PTR_SEG_OFF_TO_SEGPTR( sel, 0 );
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}
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/***********************************************************************
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* GlobalLock16 (KERNEL.18)
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*
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* This is the GlobalLock16() function used by 32-bit code.
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*
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* RETURNS
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* Pointer to first byte of memory block
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* NULL: Failure
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*/
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LPVOID WINAPI GlobalLock16(
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HGLOBAL16 handle /* [in] Handle of global memory object */
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) {
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if (!handle) return 0;
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if (!VALID_HANDLE(handle))
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return (LPVOID)0;
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GET_ARENA_PTR(handle)->lockCount++;
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return (LPVOID)GET_ARENA_PTR(handle)->base;
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}
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/***********************************************************************
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* GlobalUnlock16 (KERNEL.19)
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* NOTES
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* Should the return values be cast to booleans?
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*
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* RETURNS
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* TRUE: Object is still locked
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* FALSE: Object is unlocked
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*/
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BOOL16 WINAPI GlobalUnlock16(
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HGLOBAL16 handle /* [in] Handle of global memory object */
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) {
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GLOBALARENA *pArena = GET_ARENA_PTR(handle);
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if (!VALID_HANDLE(handle)) {
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WARN("Invalid handle 0x%04x passed to GlobalUnlock16!\n",handle);
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return 0;
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}
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TRACE("%04x\n", handle );
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if (pArena->lockCount) pArena->lockCount--;
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return pArena->lockCount;
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}
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/***********************************************************************
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* GlobalChangeLockCount (KERNEL.365)
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*
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* This is declared as a register function as it has to preserve
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* *all* registers, even AX/DX !
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*
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*/
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void WINAPI GlobalChangeLockCount16( HGLOBAL16 handle, INT16 delta,
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CONTEXT86 *context )
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{
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if ( delta == 1 )
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GlobalLock16( handle );
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else if ( delta == -1 )
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GlobalUnlock16( handle );
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else
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ERR("(%04X, %d): strange delta value\n", handle, delta );
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}
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/***********************************************************************
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* GlobalSize16 (KERNEL.20)
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* RETURNS
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* Size in bytes of object
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* 0: Failure
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*/
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DWORD WINAPI GlobalSize16(
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HGLOBAL16 handle /* [in] Handle of global memory object */
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) {
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TRACE("%04x\n", handle );
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if (!handle) return 0;
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if (!VALID_HANDLE(handle))
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return 0;
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return GET_ARENA_PTR(handle)->size;
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}
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|
|
|
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/***********************************************************************
|
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* GlobalHandle16 (KERNEL.21)
|
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* NOTES
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* Why is GlobalHandleToSel used here with the sel as input?
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*
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* RETURNS
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* Handle: Success
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* NULL: Failure
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*/
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DWORD WINAPI GlobalHandle16(
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WORD sel /* [in] Address of global memory block */
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) {
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TRACE("%04x\n", sel );
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if (!VALID_HANDLE(sel)) {
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WARN("Invalid handle 0x%04x passed to GlobalHandle16!\n",sel);
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return 0;
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}
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return MAKELONG( GET_ARENA_PTR(sel)->handle, GlobalHandleToSel16(sel) );
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}
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|
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/***********************************************************************
|
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* GlobalHandleNoRIP (KERNEL.159)
|
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*/
|
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DWORD WINAPI GlobalHandleNoRIP16( WORD sel )
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{
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int i;
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for (i = globalArenaSize-1 ; i>=0 ; i--) {
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if (pGlobalArena[i].size!=0 && pGlobalArena[i].handle == sel)
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return MAKELONG( GET_ARENA_PTR(sel)->handle, GlobalHandleToSel16(sel) );
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}
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return 0;
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}
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|
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/***********************************************************************
|
|
* GlobalFlags16 (KERNEL.22)
|
|
* NOTES
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* Should this return GMEM_INVALID_HANDLE instead of 0 on invalid
|
|
* handle?
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*
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* RETURNS
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* Value specifying flags and lock count
|
|
* GMEM_INVALID_HANDLE: Invalid handle
|
|
*/
|
|
UINT16 WINAPI GlobalFlags16(
|
|
HGLOBAL16 handle /* [in] Handle of global memory object */
|
|
) {
|
|
GLOBALARENA *pArena;
|
|
|
|
TRACE("%04x\n", handle );
|
|
if (!VALID_HANDLE(handle)) {
|
|
WARN("Invalid handle 0x%04x passed to GlobalFlags16!\n",handle);
|
|
return 0;
|
|
}
|
|
pArena = GET_ARENA_PTR(handle);
|
|
return pArena->lockCount |
|
|
((pArena->flags & GA_DISCARDABLE) ? GMEM_DISCARDABLE : 0) |
|
|
((pArena->base == 0) ? GMEM_DISCARDED : 0);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LockSegment16 (KERNEL.23)
|
|
*/
|
|
HGLOBAL16 WINAPI LockSegment16( HGLOBAL16 handle )
|
|
{
|
|
TRACE("%04x\n", handle );
|
|
if (handle == (HGLOBAL16)-1) handle = CURRENT_DS;
|
|
if (!VALID_HANDLE(handle)) {
|
|
WARN("Invalid handle 0x%04x passed to LockSegment16!\n",handle);
|
|
return 0;
|
|
}
|
|
GET_ARENA_PTR(handle)->lockCount++;
|
|
return handle;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* UnlockSegment16 (KERNEL.24)
|
|
*/
|
|
void WINAPI UnlockSegment16( HGLOBAL16 handle )
|
|
{
|
|
TRACE("%04x\n", handle );
|
|
if (handle == (HGLOBAL16)-1) handle = CURRENT_DS;
|
|
if (!VALID_HANDLE(handle)) {
|
|
WARN("Invalid handle 0x%04x passed to UnlockSegment16!\n",handle);
|
|
return;
|
|
}
|
|
GET_ARENA_PTR(handle)->lockCount--;
|
|
/* FIXME: this ought to return the lock count in CX (go figure...) */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalCompact16 (KERNEL.25)
|
|
*/
|
|
DWORD WINAPI GlobalCompact16( DWORD desired )
|
|
{
|
|
return GLOBAL_MAX_ALLOC_SIZE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalFreeAll (KERNEL.26)
|
|
*/
|
|
void WINAPI GlobalFreeAll16( HGLOBAL16 owner )
|
|
{
|
|
DWORD i;
|
|
GLOBALARENA *pArena;
|
|
|
|
pArena = pGlobalArena;
|
|
for (i = 0; i < globalArenaSize; i++, pArena++)
|
|
{
|
|
if ((pArena->size != 0) && (pArena->hOwner == owner))
|
|
GlobalFree16( pArena->handle );
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalWire16 (KERNEL.111)
|
|
*/
|
|
SEGPTR WINAPI GlobalWire16( HGLOBAL16 handle )
|
|
{
|
|
return WIN16_GlobalLock16( handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalUnWire16 (KERNEL.112)
|
|
*/
|
|
BOOL16 WINAPI GlobalUnWire16( HGLOBAL16 handle )
|
|
{
|
|
return !GlobalUnlock16( handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SetSwapAreaSize16 (KERNEL.106)
|
|
*/
|
|
LONG WINAPI SetSwapAreaSize16( WORD size )
|
|
{
|
|
FIXME("(%d) - stub!\n", size );
|
|
return MAKELONG( size, 0xffff );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalLRUOldest (KERNEL.163)
|
|
*/
|
|
HGLOBAL16 WINAPI GlobalLRUOldest16( HGLOBAL16 handle )
|
|
{
|
|
TRACE("%04x\n", handle );
|
|
if (handle == (HGLOBAL16)-1) handle = CURRENT_DS;
|
|
return handle;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalLRUNewest (KERNEL.164)
|
|
*/
|
|
HGLOBAL16 WINAPI GlobalLRUNewest16( HGLOBAL16 handle )
|
|
{
|
|
TRACE("%04x\n", handle );
|
|
if (handle == (HGLOBAL16)-1) handle = CURRENT_DS;
|
|
return handle;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetFreeSpace16 (KERNEL.169)
|
|
*/
|
|
DWORD WINAPI GetFreeSpace16( UINT16 wFlags )
|
|
{
|
|
MEMORYSTATUS ms;
|
|
GlobalMemoryStatus( &ms );
|
|
return ms.dwAvailVirtual;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GlobalDOSAlloc (KERNEL.184)
|
|
* RETURNS
|
|
* Address (HW=Paragraph segment; LW=Selector)
|
|
*/
|
|
DWORD WINAPI GlobalDOSAlloc16(
|
|
DWORD size /* [in] Number of bytes to be allocated */
|
|
) {
|
|
UINT16 uParagraph;
|
|
LPVOID lpBlock = DOSMEM_GetBlock( 0, size, &uParagraph );
|
|
|
|
if( lpBlock )
|
|
{
|
|
HMODULE16 hModule = GetModuleHandle16("KERNEL");
|
|
WORD wSelector;
|
|
|
|
wSelector = GLOBAL_CreateBlock(GMEM_FIXED, lpBlock, size,
|
|
hModule, 0, 0, 0, NULL );
|
|
return MAKELONG(wSelector,uParagraph);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalDOSFree (KERNEL.185)
|
|
* RETURNS
|
|
* NULL: Success
|
|
* sel: Failure
|
|
*/
|
|
WORD WINAPI GlobalDOSFree16(
|
|
WORD sel /* [in] Selector */
|
|
) {
|
|
DWORD block = GetSelectorBase(sel);
|
|
|
|
if( block && block < 0x100000 )
|
|
{
|
|
LPVOID lpBlock = DOSMEM_MapDosToLinear( block );
|
|
if( DOSMEM_FreeBlock( 0, lpBlock ) )
|
|
GLOBAL_FreeBlock( sel );
|
|
sel = 0;
|
|
}
|
|
return sel;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalPageLock (KERNEL.191)
|
|
*/
|
|
WORD WINAPI GlobalPageLock16( HGLOBAL16 handle )
|
|
{
|
|
TRACE("%04x\n", handle );
|
|
if (!VALID_HANDLE(handle)) {
|
|
WARN("Invalid handle 0x%04x passed to GlobalPageLock!\n",handle);
|
|
return 0;
|
|
}
|
|
return ++(GET_ARENA_PTR(handle)->pageLockCount);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalPageUnlock (KERNEL.192)
|
|
*/
|
|
WORD WINAPI GlobalPageUnlock16( HGLOBAL16 handle )
|
|
{
|
|
TRACE("%04x\n", handle );
|
|
if (!VALID_HANDLE(handle)) {
|
|
WARN("Invalid handle 0x%04x passed to GlobalPageUnlock!\n",handle);
|
|
return 0;
|
|
}
|
|
return --(GET_ARENA_PTR(handle)->pageLockCount);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalFix16 (KERNEL.197)
|
|
*/
|
|
WORD WINAPI GlobalFix16( HGLOBAL16 handle )
|
|
{
|
|
TRACE("%04x\n", handle );
|
|
if (!VALID_HANDLE(handle)) {
|
|
WARN("Invalid handle 0x%04x passed to GlobalFix16!\n",handle);
|
|
return 0;
|
|
}
|
|
GET_ARENA_PTR(handle)->lockCount++;
|
|
|
|
return GlobalHandleToSel16(handle);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalUnfix16 (KERNEL.198)
|
|
*/
|
|
void WINAPI GlobalUnfix16( HGLOBAL16 handle )
|
|
{
|
|
TRACE("%04x\n", handle );
|
|
if (!VALID_HANDLE(handle)) {
|
|
WARN("Invalid handle 0x%04x passed to GlobalUnfix16!\n",handle);
|
|
return;
|
|
}
|
|
GET_ARENA_PTR(handle)->lockCount--;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* FarSetOwner (KERNEL.403)
|
|
*/
|
|
void WINAPI FarSetOwner16( HGLOBAL16 handle, HANDLE16 hOwner )
|
|
{
|
|
if (!VALID_HANDLE(handle)) {
|
|
WARN("Invalid handle 0x%04x passed to FarSetOwner!\n",handle);
|
|
return;
|
|
}
|
|
GET_ARENA_PTR(handle)->hOwner = hOwner;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* FarGetOwner (KERNEL.404)
|
|
*/
|
|
HANDLE16 WINAPI FarGetOwner16( HGLOBAL16 handle )
|
|
{
|
|
if (!VALID_HANDLE(handle)) {
|
|
WARN("Invalid handle 0x%04x passed to FarGetOwner!\n",handle);
|
|
return 0;
|
|
}
|
|
return GET_ARENA_PTR(handle)->hOwner;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalHandleToSel (TOOLHELP.50)
|
|
*/
|
|
WORD WINAPI GlobalHandleToSel16( HGLOBAL16 handle )
|
|
{
|
|
if (!handle) return 0;
|
|
if (!VALID_HANDLE(handle)) {
|
|
WARN("Invalid handle 0x%04x passed to GlobalHandleToSel!\n",handle);
|
|
return 0;
|
|
}
|
|
if (!(handle & 7))
|
|
{
|
|
WARN("Program attempted invalid selector conversion\n" );
|
|
return handle - 1;
|
|
}
|
|
return handle | 7;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalFirst (TOOLHELP.51)
|
|
*/
|
|
BOOL16 WINAPI GlobalFirst16( GLOBALENTRY *pGlobal, WORD wFlags )
|
|
{
|
|
if (wFlags == GLOBAL_LRU) return FALSE;
|
|
pGlobal->dwNext = 0;
|
|
return GlobalNext16( pGlobal, wFlags );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalNext (TOOLHELP.52)
|
|
*/
|
|
BOOL16 WINAPI GlobalNext16( GLOBALENTRY *pGlobal, WORD wFlags)
|
|
{
|
|
GLOBALARENA *pArena;
|
|
|
|
if (pGlobal->dwNext >= globalArenaSize) return FALSE;
|
|
pArena = pGlobalArena + pGlobal->dwNext;
|
|
if (wFlags == GLOBAL_FREE) /* only free blocks */
|
|
{
|
|
int i;
|
|
for (i = pGlobal->dwNext; i < globalArenaSize; i++, pArena++)
|
|
if (pArena->size == 0) break; /* block is free */
|
|
if (i >= globalArenaSize) return FALSE;
|
|
pGlobal->dwNext = i;
|
|
}
|
|
|
|
pGlobal->dwAddress = pArena->base;
|
|
pGlobal->dwBlockSize = pArena->size;
|
|
pGlobal->hBlock = pArena->handle;
|
|
pGlobal->wcLock = pArena->lockCount;
|
|
pGlobal->wcPageLock = pArena->pageLockCount;
|
|
pGlobal->wFlags = (GetCurrentPDB16() == pArena->hOwner);
|
|
pGlobal->wHeapPresent = FALSE;
|
|
pGlobal->hOwner = pArena->hOwner;
|
|
pGlobal->wType = GT_UNKNOWN;
|
|
pGlobal->wData = 0;
|
|
pGlobal->dwNext++;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalInfo (TOOLHELP.53)
|
|
*/
|
|
BOOL16 WINAPI GlobalInfo16( GLOBALINFO *pInfo )
|
|
{
|
|
int i;
|
|
GLOBALARENA *pArena;
|
|
|
|
pInfo->wcItems = globalArenaSize;
|
|
pInfo->wcItemsFree = 0;
|
|
pInfo->wcItemsLRU = 0;
|
|
for (i = 0, pArena = pGlobalArena; i < globalArenaSize; i++, pArena++)
|
|
if (pArena->size == 0) pInfo->wcItemsFree++;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalEntryHandle (TOOLHELP.54)
|
|
*/
|
|
BOOL16 WINAPI GlobalEntryHandle16( GLOBALENTRY *pGlobal, HGLOBAL16 hItem )
|
|
{
|
|
GLOBALARENA *pArena = GET_ARENA_PTR(hItem);
|
|
|
|
pGlobal->dwAddress = pArena->base;
|
|
pGlobal->dwBlockSize = pArena->size;
|
|
pGlobal->hBlock = pArena->handle;
|
|
pGlobal->wcLock = pArena->lockCount;
|
|
pGlobal->wcPageLock = pArena->pageLockCount;
|
|
pGlobal->wFlags = (GetCurrentPDB16() == pArena->hOwner);
|
|
pGlobal->wHeapPresent = FALSE;
|
|
pGlobal->hOwner = pArena->hOwner;
|
|
pGlobal->wType = GT_UNKNOWN;
|
|
pGlobal->wData = 0;
|
|
pGlobal->dwNext++;
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalEntryModule (TOOLHELP.55)
|
|
*/
|
|
BOOL16 WINAPI GlobalEntryModule16( GLOBALENTRY *pGlobal, HMODULE16 hModule,
|
|
WORD wSeg )
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* MemManInfo (TOOLHELP.72)
|
|
*/
|
|
BOOL16 WINAPI MemManInfo16( MEMMANINFO *info )
|
|
{
|
|
MEMORYSTATUS status;
|
|
|
|
/*
|
|
* Not unsurprisingly although the documention says you
|
|
* _must_ provide the size in the dwSize field, this function
|
|
* (under Windows) always fills the structure and returns true.
|
|
*/
|
|
GlobalMemoryStatus( &status );
|
|
info->wPageSize = VIRTUAL_GetPageSize();
|
|
info->dwLargestFreeBlock = status.dwAvailVirtual;
|
|
info->dwMaxPagesAvailable = info->dwLargestFreeBlock / info->wPageSize;
|
|
info->dwMaxPagesLockable = info->dwMaxPagesAvailable;
|
|
info->dwTotalLinearSpace = status.dwTotalVirtual / info->wPageSize;
|
|
info->dwTotalUnlockedPages = info->dwTotalLinearSpace;
|
|
info->dwFreePages = info->dwMaxPagesAvailable;
|
|
info->dwTotalPages = info->dwTotalLinearSpace;
|
|
info->dwFreeLinearSpace = info->dwMaxPagesAvailable;
|
|
info->dwSwapFilePages = status.dwTotalPageFile / info->wPageSize;
|
|
return TRUE;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GetFreeMemInfo (KERNEL.316)
|
|
*/
|
|
DWORD WINAPI GetFreeMemInfo16(void)
|
|
{
|
|
MEMMANINFO info;
|
|
MemManInfo16( &info );
|
|
return MAKELONG( info.dwTotalLinearSpace, info.dwMaxPagesAvailable );
|
|
}
|
|
|
|
/*
|
|
* Win32 Global heap functions (GlobalXXX).
|
|
* These functions included in Win32 for compatibility with 16 bit Windows
|
|
* Especially the moveable blocks and handles are oldish.
|
|
* But the ability to directly allocate memory with GPTR and LPTR is widely
|
|
* used.
|
|
*
|
|
* The handle stuff looks horrible, but it's implemented almost like Win95
|
|
* does it.
|
|
*
|
|
*/
|
|
|
|
#define MAGIC_GLOBAL_USED 0x5342
|
|
#define GLOBAL_LOCK_MAX 0xFF
|
|
#define HANDLE_TO_INTERN(h) ((PGLOBAL32_INTERN)(((char *)(h))-2))
|
|
#define INTERN_TO_HANDLE(i) ((HGLOBAL) &((i)->Pointer))
|
|
#define POINTER_TO_HANDLE(p) (*(((HGLOBAL *)(p))-1))
|
|
#define ISHANDLE(h) (((DWORD)(h)&2)!=0)
|
|
#define ISPOINTER(h) (((DWORD)(h)&2)==0)
|
|
|
|
typedef struct __GLOBAL32_INTERN
|
|
{
|
|
WORD Magic;
|
|
LPVOID Pointer WINE_PACKED;
|
|
BYTE Flags;
|
|
BYTE LockCount;
|
|
} GLOBAL32_INTERN, *PGLOBAL32_INTERN;
|
|
|
|
/***********************************************************************
|
|
* GLOBAL_GetHeap
|
|
*
|
|
* Returns the appropriate heap to be used. If the object was created
|
|
* With GMEM_DDESHARE we allocated it on the system heap.
|
|
*/
|
|
static HANDLE GLOBAL_GetHeap( HGLOBAL hmem )
|
|
{
|
|
HANDLE heap;
|
|
|
|
TRACE("() hmem=%x\n", hmem);
|
|
|
|
/* Get the appropriate heap to be used for this object */
|
|
if (ISPOINTER(hmem))
|
|
heap = GetProcessHeap();
|
|
else
|
|
{
|
|
PGLOBAL32_INTERN pintern;
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
|
|
/* If it was DDESHARE it was created on the shared system heap */
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
heap = ( pintern->Flags & (GMEM_DDESHARE >> 8) )
|
|
? SystemHeap : GetProcessHeap();
|
|
}
|
|
|
|
return heap;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GlobalAlloc32 (KERNEL32.315)
|
|
* RETURNS
|
|
* Handle: Success
|
|
* NULL: Failure
|
|
*/
|
|
HGLOBAL WINAPI GlobalAlloc(
|
|
UINT flags, /* [in] Object allocation attributes */
|
|
DWORD size /* [in] Number of bytes to allocate */
|
|
) {
|
|
PGLOBAL32_INTERN pintern;
|
|
DWORD hpflags;
|
|
LPVOID palloc;
|
|
|
|
if(flags&GMEM_ZEROINIT)
|
|
hpflags=HEAP_ZERO_MEMORY;
|
|
else
|
|
hpflags=0;
|
|
|
|
TRACE("() flags=%04x\n", flags );
|
|
|
|
if((flags & GMEM_MOVEABLE)==0) /* POINTER */
|
|
{
|
|
palloc=HeapAlloc(GetProcessHeap(), hpflags, size);
|
|
return (HGLOBAL) palloc;
|
|
}
|
|
else /* HANDLE */
|
|
{
|
|
HANDLE heap;
|
|
|
|
/* If DDESHARE is set, create on the shared system heap */
|
|
heap = (flags & GMEM_DDESHARE) ? SystemHeap : GetProcessHeap();
|
|
|
|
/* HeapLock(heap); */
|
|
|
|
pintern=HeapAlloc(heap, 0, sizeof(GLOBAL32_INTERN));
|
|
if(size)
|
|
{
|
|
palloc=HeapAlloc(heap, hpflags, size+sizeof(HGLOBAL));
|
|
*(HGLOBAL *)palloc=INTERN_TO_HANDLE(pintern);
|
|
pintern->Pointer=(char *) palloc+sizeof(HGLOBAL);
|
|
}
|
|
else
|
|
pintern->Pointer=NULL;
|
|
pintern->Magic=MAGIC_GLOBAL_USED;
|
|
pintern->Flags=flags>>8;
|
|
pintern->LockCount=0;
|
|
|
|
/* HeapUnlock(heap); */
|
|
|
|
return INTERN_TO_HANDLE(pintern);
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalLock32 (KERNEL32.326)
|
|
* RETURNS
|
|
* Pointer to first byte of block
|
|
* NULL: Failure
|
|
*/
|
|
LPVOID WINAPI GlobalLock(
|
|
HGLOBAL hmem /* [in] Handle of global memory object */
|
|
) {
|
|
PGLOBAL32_INTERN pintern;
|
|
LPVOID palloc;
|
|
|
|
if(ISPOINTER(hmem))
|
|
return (LPVOID) hmem;
|
|
|
|
/* HeapLock(GetProcessHeap()); */
|
|
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
if(pintern->Magic==MAGIC_GLOBAL_USED)
|
|
{
|
|
if(pintern->LockCount<GLOBAL_LOCK_MAX)
|
|
pintern->LockCount++;
|
|
palloc=pintern->Pointer;
|
|
}
|
|
else
|
|
{
|
|
WARN("invalid handle\n");
|
|
palloc=(LPVOID) NULL;
|
|
}
|
|
/* HeapUnlock(GetProcessHeap()); */;
|
|
return palloc;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalUnlock32 (KERNEL32.332)
|
|
* RETURNS
|
|
* TRUE: Object is still locked
|
|
* FALSE: Object is unlocked
|
|
*/
|
|
BOOL WINAPI GlobalUnlock(
|
|
HGLOBAL hmem /* [in] Handle of global memory object */
|
|
) {
|
|
PGLOBAL32_INTERN pintern;
|
|
BOOL locked;
|
|
|
|
if(ISPOINTER(hmem))
|
|
return FALSE;
|
|
|
|
/* HeapLock(GetProcessHeap()); */
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
|
|
if(pintern->Magic==MAGIC_GLOBAL_USED)
|
|
{
|
|
if((pintern->LockCount<GLOBAL_LOCK_MAX)&&(pintern->LockCount>0))
|
|
pintern->LockCount--;
|
|
|
|
locked=(pintern->LockCount==0) ? FALSE : TRUE;
|
|
}
|
|
else
|
|
{
|
|
WARN("invalid handle\n");
|
|
locked=FALSE;
|
|
}
|
|
/* HeapUnlock(GetProcessHeap()); */
|
|
return locked;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalHandle32 (KERNEL32.325)
|
|
* Returns the handle associated with the specified pointer.
|
|
*
|
|
* NOTES
|
|
* Since there in only one goto, can it be removed and the return
|
|
* be put 'inline'?
|
|
*
|
|
* RETURNS
|
|
* Handle: Success
|
|
* NULL: Failure
|
|
*/
|
|
HGLOBAL WINAPI GlobalHandle(
|
|
LPCVOID pmem /* [in] Pointer to global memory block */
|
|
) {
|
|
HGLOBAL handle;
|
|
HANDLE heap;
|
|
|
|
if (!pmem)
|
|
{
|
|
SetLastError( ERROR_INVALID_PARAMETER );
|
|
return 0;
|
|
}
|
|
heap = GLOBAL_GetHeap( POINTER_TO_HANDLE(pmem) );
|
|
|
|
if (!HEAP_IsInsideHeap( heap, 0, pmem )) goto error;
|
|
handle = POINTER_TO_HANDLE(pmem);
|
|
if (HEAP_IsInsideHeap( heap, 0, (LPCVOID)handle ))
|
|
{
|
|
if (HANDLE_TO_INTERN(handle)->Magic == MAGIC_GLOBAL_USED)
|
|
return handle; /* valid moveable block */
|
|
}
|
|
/* maybe FIXED block */
|
|
if (HeapValidate( heap, 0, pmem ))
|
|
return (HGLOBAL)pmem; /* valid fixed block */
|
|
|
|
error:
|
|
SetLastError( ERROR_INVALID_HANDLE );
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalReAlloc32 (KERNEL32.328)
|
|
* RETURNS
|
|
* Handle: Success
|
|
* NULL: Failure
|
|
*/
|
|
HGLOBAL WINAPI GlobalReAlloc(
|
|
HGLOBAL hmem, /* [in] Handle of global memory object */
|
|
DWORD size, /* [in] New size of block */
|
|
UINT flags /* [in] How to reallocate object */
|
|
) {
|
|
LPVOID palloc;
|
|
HGLOBAL hnew;
|
|
PGLOBAL32_INTERN pintern;
|
|
HANDLE heap = GLOBAL_GetHeap( hmem );
|
|
DWORD heap_flags = (flags & GMEM_ZEROINIT) ? HEAP_ZERO_MEMORY : 0;
|
|
|
|
hnew = 0;
|
|
/* HeapLock(heap); */
|
|
if(flags & GMEM_MODIFY) /* modify flags */
|
|
{
|
|
if( ISPOINTER(hmem) && (flags & GMEM_MOVEABLE))
|
|
{
|
|
/* make a fixed block moveable
|
|
* actually only NT is able to do this. But it's soo simple
|
|
*/
|
|
if (hmem == 0)
|
|
{
|
|
ERR("GlobalReAlloc32 with null handle!\n");
|
|
SetLastError( ERROR_NOACCESS );
|
|
return 0;
|
|
}
|
|
size=HeapSize(heap, 0, (LPVOID) hmem);
|
|
hnew=GlobalAlloc( flags, size);
|
|
palloc=GlobalLock(hnew);
|
|
memcpy(palloc, (LPVOID) hmem, size);
|
|
GlobalUnlock(hnew);
|
|
GlobalFree(hmem);
|
|
}
|
|
else if( ISPOINTER(hmem) &&(flags & GMEM_DISCARDABLE))
|
|
{
|
|
/* change the flags to make our block "discardable" */
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
pintern->Flags = pintern->Flags | (GMEM_DISCARDABLE >> 8);
|
|
hnew=hmem;
|
|
}
|
|
else
|
|
{
|
|
SetLastError(ERROR_INVALID_PARAMETER);
|
|
hnew = 0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(ISPOINTER(hmem))
|
|
{
|
|
/* reallocate fixed memory */
|
|
hnew=(HGLOBAL)HeapReAlloc(heap, heap_flags, (LPVOID) hmem, size);
|
|
}
|
|
else
|
|
{
|
|
/* reallocate a moveable block */
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
if(pintern->LockCount>1) {
|
|
ERR("handle 0x%08lx is still locked, cannot realloc!\n",(DWORD)hmem);
|
|
SetLastError(ERROR_INVALID_HANDLE);
|
|
} else if(size!=0)
|
|
{
|
|
hnew=hmem;
|
|
if(pintern->Pointer)
|
|
{
|
|
palloc=HeapReAlloc(heap, heap_flags,
|
|
(char *) pintern->Pointer-sizeof(HGLOBAL),
|
|
size+sizeof(HGLOBAL) );
|
|
pintern->Pointer=(char *) palloc+sizeof(HGLOBAL);
|
|
}
|
|
else
|
|
{
|
|
palloc=HeapAlloc(heap, heap_flags, size+sizeof(HGLOBAL));
|
|
*(HGLOBAL *)palloc=hmem;
|
|
pintern->Pointer=(char *) palloc+sizeof(HGLOBAL);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(pintern->Pointer)
|
|
{
|
|
HeapFree(heap, 0, (char *) pintern->Pointer-sizeof(HGLOBAL));
|
|
pintern->Pointer=NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/* HeapUnlock(heap); */
|
|
return hnew;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalFree32 (KERNEL32.322)
|
|
* RETURNS
|
|
* NULL: Success
|
|
* Handle: Failure
|
|
*/
|
|
HGLOBAL WINAPI GlobalFree(
|
|
HGLOBAL hmem /* [in] Handle of global memory object */
|
|
) {
|
|
PGLOBAL32_INTERN pintern;
|
|
HGLOBAL hreturned = 0;
|
|
HANDLE heap = GLOBAL_GetHeap( hmem );
|
|
|
|
if(ISPOINTER(hmem)) /* POINTER */
|
|
{
|
|
if(!HeapFree(heap, 0, (LPVOID) hmem)) hmem = 0;
|
|
}
|
|
else /* HANDLE */
|
|
{
|
|
/* HeapLock(heap); */
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
|
|
if(pintern->Magic==MAGIC_GLOBAL_USED)
|
|
{
|
|
if(pintern->LockCount!=0)
|
|
SetLastError(ERROR_INVALID_HANDLE);
|
|
if(pintern->Pointer)
|
|
if(!HeapFree(heap, 0,
|
|
(char *)(pintern->Pointer)-sizeof(HGLOBAL)))
|
|
hreturned=hmem;
|
|
if(!HeapFree(heap, 0, pintern))
|
|
hreturned=hmem;
|
|
}
|
|
/* HeapUnlock(heap); */
|
|
}
|
|
return hreturned;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalSize32 (KERNEL32.329)
|
|
* RETURNS
|
|
* Size in bytes of the global memory object
|
|
* 0: Failure
|
|
*/
|
|
DWORD WINAPI GlobalSize(
|
|
HGLOBAL hmem /* [in] Handle of global memory object */
|
|
) {
|
|
DWORD retval;
|
|
PGLOBAL32_INTERN pintern;
|
|
HANDLE heap = GLOBAL_GetHeap( hmem );
|
|
|
|
if(ISPOINTER(hmem))
|
|
{
|
|
retval=HeapSize(heap, 0, (LPVOID) hmem);
|
|
}
|
|
else
|
|
{
|
|
/* HeapLock(heap); */
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
|
|
if(pintern->Magic==MAGIC_GLOBAL_USED)
|
|
{
|
|
if (!pintern->Pointer) /* handle case of GlobalAlloc( ??,0) */
|
|
return 0;
|
|
retval=HeapSize(heap, 0,
|
|
(char *)(pintern->Pointer)-sizeof(HGLOBAL))-4;
|
|
if (retval == 0xffffffff-4) retval = 0;
|
|
}
|
|
else
|
|
{
|
|
WARN("invalid handle\n");
|
|
retval=0;
|
|
}
|
|
/* HeapUnlock(heap); */
|
|
}
|
|
/* HeapSize returns 0xffffffff on failure */
|
|
if (retval == 0xffffffff) retval = 0;
|
|
return retval;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalWire32 (KERNEL32.333)
|
|
*/
|
|
LPVOID WINAPI GlobalWire(HGLOBAL hmem)
|
|
{
|
|
return GlobalLock( hmem );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalUnWire32 (KERNEL32.330)
|
|
*/
|
|
BOOL WINAPI GlobalUnWire(HGLOBAL hmem)
|
|
{
|
|
return GlobalUnlock( hmem);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalFix32 (KERNEL32.320)
|
|
*/
|
|
VOID WINAPI GlobalFix(HGLOBAL hmem)
|
|
{
|
|
GlobalLock( hmem );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalUnfix32 (KERNEL32.331)
|
|
*/
|
|
VOID WINAPI GlobalUnfix(HGLOBAL hmem)
|
|
{
|
|
GlobalUnlock( hmem);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalFlags32 (KERNEL32.321)
|
|
* Returns information about the specified global memory object
|
|
*
|
|
* NOTES
|
|
* Should this return GMEM_INVALID_HANDLE on invalid handle?
|
|
*
|
|
* RETURNS
|
|
* Value specifying allocation flags and lock count
|
|
* GMEM_INVALID_HANDLE: Failure
|
|
*/
|
|
UINT WINAPI GlobalFlags(
|
|
HGLOBAL hmem /* [in] Handle to global memory object */
|
|
) {
|
|
DWORD retval;
|
|
PGLOBAL32_INTERN pintern;
|
|
|
|
if(ISPOINTER(hmem))
|
|
{
|
|
retval=0;
|
|
}
|
|
else
|
|
{
|
|
/* HeapLock(GetProcessHeap()); */
|
|
pintern=HANDLE_TO_INTERN(hmem);
|
|
if(pintern->Magic==MAGIC_GLOBAL_USED)
|
|
{
|
|
retval=pintern->LockCount + (pintern->Flags<<8);
|
|
if(pintern->Pointer==0)
|
|
retval|= GMEM_DISCARDED;
|
|
}
|
|
else
|
|
{
|
|
WARN("Invalid handle: %04x", hmem);
|
|
retval=0;
|
|
}
|
|
/* HeapUnlock(GetProcessHeap()); */
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalCompact32 (KERNEL32.316)
|
|
*/
|
|
DWORD WINAPI GlobalCompact( DWORD minfree )
|
|
{
|
|
return 0; /* GlobalCompact does nothing in Win32 */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalMemoryStatus (KERNEL32.327)
|
|
* RETURNS
|
|
* None
|
|
*/
|
|
VOID WINAPI GlobalMemoryStatus(
|
|
LPMEMORYSTATUS lpmem
|
|
) {
|
|
#ifdef linux
|
|
FILE *f = fopen( "/proc/meminfo", "r" );
|
|
if (f)
|
|
{
|
|
char buffer[256];
|
|
int total, used, free, shared, buffers, cached;
|
|
|
|
lpmem->dwLength = sizeof(MEMORYSTATUS);
|
|
lpmem->dwTotalPhys = lpmem->dwAvailPhys = 0;
|
|
lpmem->dwTotalPageFile = lpmem->dwAvailPageFile = 0;
|
|
while (fgets( buffer, sizeof(buffer), f ))
|
|
{
|
|
/* old style /proc/meminfo ... */
|
|
if (sscanf( buffer, "Mem: %d %d %d %d %d %d", &total, &used, &free, &shared, &buffers, &cached ))
|
|
{
|
|
lpmem->dwTotalPhys += total;
|
|
lpmem->dwAvailPhys += free + buffers + cached;
|
|
}
|
|
if (sscanf( buffer, "Swap: %d %d %d", &total, &used, &free ))
|
|
{
|
|
lpmem->dwTotalPageFile += total;
|
|
lpmem->dwAvailPageFile += free;
|
|
}
|
|
|
|
/* new style /proc/meminfo ... */
|
|
if (sscanf(buffer, "MemTotal: %d", &total))
|
|
lpmem->dwTotalPhys = total*1024;
|
|
if (sscanf(buffer, "MemFree: %d", &free))
|
|
lpmem->dwAvailPhys = free*1024;
|
|
if (sscanf(buffer, "SwapTotal: %d", &total))
|
|
lpmem->dwTotalPageFile = total*1024;
|
|
if (sscanf(buffer, "SwapFree: %d", &free))
|
|
lpmem->dwAvailPageFile = free*1024;
|
|
if (sscanf(buffer, "Buffers: %d", &buffers))
|
|
lpmem->dwAvailPhys += buffers*1024;
|
|
if (sscanf(buffer, "Cached: %d", &cached))
|
|
lpmem->dwAvailPhys += cached*1024;
|
|
}
|
|
fclose( f );
|
|
|
|
if (lpmem->dwTotalPhys)
|
|
{
|
|
lpmem->dwTotalVirtual = lpmem->dwTotalPhys+lpmem->dwTotalPageFile;
|
|
lpmem->dwAvailVirtual = lpmem->dwAvailPhys+lpmem->dwAvailPageFile;
|
|
lpmem->dwMemoryLoad = (lpmem->dwTotalVirtual-lpmem->dwAvailVirtual)
|
|
/ (lpmem->dwTotalVirtual / 100);
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
/* FIXME: should do something for other systems */
|
|
lpmem->dwMemoryLoad = 0;
|
|
lpmem->dwTotalPhys = 16*1024*1024;
|
|
lpmem->dwAvailPhys = 16*1024*1024;
|
|
lpmem->dwTotalPageFile = 16*1024*1024;
|
|
lpmem->dwAvailPageFile = 16*1024*1024;
|
|
lpmem->dwTotalVirtual = 32*1024*1024;
|
|
lpmem->dwAvailVirtual = 32*1024*1024;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* A20Proc16 (KERNEL.165)
|
|
*/
|
|
void WINAPI A20Proc16( WORD unused )
|
|
{
|
|
/* this is also a NOP in Windows */
|
|
}
|
|
|
|
/***********************************************************************
|
|
* LimitEMSPages16 (KERNEL.156)
|
|
*/
|
|
DWORD WINAPI LimitEMSPages16( DWORD unused )
|
|
{
|
|
return 0;
|
|
}
|