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![Eric Pouech](/assets/img/avatar_default.png)
Signed-off-by: Eric Pouech <eric.pouech@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
965 lines
27 KiB
C
965 lines
27 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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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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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 <time.h>
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#include <stdio.h>
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#include <string.h>
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#include "wine/winbase16.h"
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#include "winternl.h"
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#include "kernel16_private.h"
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#include "wine/debug.h"
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WINE_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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void *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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#define GA_DOSMEM 0x20
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/* Arena array (FIXME) */
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static GLOBALARENA *pGlobalArena;
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static int globalArenaSize;
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#define GLOBAL_MAX_ALLOC_SIZE 0x00ff0000 /* Largest allocation is 16M - 64K */
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#define GLOBAL_MAX_COUNT 8192 /* Max number of allocated blocks */
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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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static HANDLE get_win16_heap(void)
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{
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static HANDLE win16_heap;
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/* we create global memory block with execute permission. The access can be limited
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* for 16-bit code on selector level */
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if (!win16_heap) win16_heap = HeapCreate(HEAP_CREATE_ENABLE_EXECUTE, 0, 0);
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return win16_heap;
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}
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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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if (!pGlobalArena)
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{
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pGlobalArena = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
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GLOBAL_MAX_COUNT * sizeof(GLOBALARENA) );
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if (!pGlobalArena) return 0;
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/* Hack: store a pointer to it in THHOOK instead of a handle */
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*(GLOBALARENA **)&pThhook->hGlobalHeap = pGlobalArena;
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}
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if (newsize > GLOBAL_MAX_COUNT) return 0;
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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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/***********************************************************************
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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, void *ptr, DWORD size,
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HGLOBAL16 hOwner, unsigned char selflags )
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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, selflags );
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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 );
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return 0;
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}
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/* Fill the arena block */
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pArena->base = ptr;
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pArena->size = GetSelectorLimit16(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 (!(selflags & (LDT_FLAGS_CODE ^ LDT_FLAGS_DATA))) 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)) return FALSE;
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pArena = GET_ARENA_PTR(sel);
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if (!pArena->size)
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{
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WARN( "already free %x\n", handle );
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return FALSE;
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}
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SELECTOR_FreeBlock( sel );
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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, 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)) 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 = ptr;
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pArena->size = size;
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SELECTOR_ReallocBlock( sel, ptr, size );
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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, unsigned char selflags )
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{
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void *ptr;
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HGLOBAL16 handle;
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DWORD align = 0x1f;
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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, selflags );
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/* Fixup the size */
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if (size > 0x100000) align = 0xfff; /* selector limit will be in pages */
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if (size >= GLOBAL_MAX_ALLOC_SIZE - align) return 0;
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size = (size + align) & ~align;
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/* Allocate the linear memory */
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ptr = HeapAlloc( get_win16_heap(), 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, selflags );
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if (!handle)
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{
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HeapFree( get_win16_heap(), 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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* GlobalAlloc (KERNEL.15)
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* GlobalAlloc16 (KERNEL32.24)
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*
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* Allocate a global memory object.
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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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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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{
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/* make it owned by the calling module */
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STACK16FRAME *frame = CURRENT_STACK16;
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owner = GetExePtr( frame->cs );
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}
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return GLOBAL_Alloc( flags, size, owner, LDT_FLAGS_DATA );
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}
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/***********************************************************************
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* GlobalReAlloc (KERNEL.16)
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*
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* Change the size or attributes of a global memory object.
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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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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, *newptr;
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GLOBALARENA *pArena, *pNewArena;
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WORD sel = GlobalHandleToSel16( handle );
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HANDLE heap = get_win16_heap();
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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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{
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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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if (pArena->flags & GA_DOSMEM)
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DOSMEM_FreeBlock( pArena->base );
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else
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HeapFree( heap, 0, 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 = pArena->base;
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oldsize = pArena->size;
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TRACE("oldbase %p oldsize %08lx newsize %08lx\n", ptr,oldsize,size);
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if (ptr && (size == oldsize)) return handle; /* Nothing to do */
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if (pArena->flags & GA_DOSMEM)
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{
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if (DOSMEM_ResizeBlock(ptr, size, TRUE) == size)
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newptr = ptr;
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else if(pArena->pageLockCount > 0)
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newptr = 0;
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else
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{
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newptr = DOSMEM_AllocBlock( size, NULL );
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if (newptr)
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{
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memcpy( newptr, ptr, oldsize );
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DOSMEM_FreeBlock( ptr );
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}
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}
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}
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else
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{
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/*
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* if more than one reader (e.g. some pointer has been
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* given out by GetVDMPointer32W16),
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* only try to realloc in place
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*/
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if (ptr)
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newptr = HeapReAlloc( heap,
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(pArena->pageLockCount > 0) ? HEAP_REALLOC_IN_PLACE_ONLY : 0,
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ptr, size );
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else
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newptr = HeapAlloc( heap, 0, size );
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}
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if (!newptr)
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{
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FIXME("Realloc failed lock %d\n",pArena->pageLockCount);
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if (pArena->pageLockCount <1)
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{
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if (pArena->flags & GA_DOSMEM)
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DOSMEM_FreeBlock( pArena->base );
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else
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HeapFree( heap, 0, ptr );
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SELECTOR_FreeBlock( sel );
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memset( pArena, 0, sizeof(GLOBALARENA) );
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}
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return 0;
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}
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ptr = newptr;
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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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if (pArena->flags & GA_DOSMEM)
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DOSMEM_FreeBlock( pArena->base );
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else
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HeapFree( heap, 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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if (pArena->flags & GA_DOSMEM)
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DOSMEM_FreeBlock( pArena->base );
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else
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HeapFree( heap, 0, ptr );
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SELECTOR_FreeBlock( sel );
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return 0;
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}
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/* Fill the new arena block
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As we may have used HEAP_REALLOC_IN_PLACE_ONLY, areas may overlap*/
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if (pNewArena != pArena) memmove( pNewArena, pArena, sizeof(GLOBALARENA) );
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pNewArena->base = ptr;
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pNewArena->size = GetSelectorLimit16(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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/***********************************************************************
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* GlobalFree (KERNEL.17)
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* GlobalFree16 (KERNEL32.31)
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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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{
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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 = 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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HeapFree( get_win16_heap(), 0, ptr );
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return 0;
|
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}
|
|
|
|
|
|
/**********************************************************************
|
|
* K32WOWGlobalLock16 (KERNEL32.60)
|
|
*/
|
|
SEGPTR WINAPI K32WOWGlobalLock16( 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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|
|
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if (handle)
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{
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if (handle == (HGLOBAL16)-1) handle = CURRENT_DS;
|
|
|
|
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;
|
|
else
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GET_ARENA_PTR(handle)->lockCount++;
|
|
}
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|
|
|
return MAKESEGPTR( sel, 0 );
|
|
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalLock (KERNEL.18)
|
|
*
|
|
* This is the GlobalLock16() function used by 16-bit code.
|
|
*/
|
|
SEGPTR WINAPI WIN16_GlobalLock16( HGLOBAL16 handle )
|
|
{
|
|
SEGPTR ret = K32WOWGlobalLock16( handle );
|
|
CURRENT_STACK16->ecx = SELECTOROF(ret); /* selector must be returned in CX as well */
|
|
return ret;
|
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}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalLock16 (KERNEL32.25)
|
|
*
|
|
* This is the GlobalLock16() function used by 32-bit code.
|
|
*
|
|
* RETURNS
|
|
* Pointer to first byte of memory block
|
|
* NULL: Failure
|
|
*/
|
|
LPVOID WINAPI GlobalLock16(
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HGLOBAL16 handle /* [in] Handle of global memory object */
|
|
) {
|
|
if (!handle) return 0;
|
|
if (!VALID_HANDLE(handle))
|
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return 0;
|
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GET_ARENA_PTR(handle)->lockCount++;
|
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return GET_ARENA_PTR(handle)->base;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalUnlock (KERNEL.19)
|
|
* GlobalUnlock16 (KERNEL32.26)
|
|
* NOTES
|
|
* Should the return values be cast to booleans?
|
|
*
|
|
* RETURNS
|
|
* TRUE: Object is still locked
|
|
* FALSE: Object is unlocked
|
|
*/
|
|
BOOL16 WINAPI GlobalUnlock16(
|
|
HGLOBAL16 handle /* [in] Handle of global memory object */
|
|
) {
|
|
GLOBALARENA *pArena = GET_ARENA_PTR(handle);
|
|
if (!VALID_HANDLE(handle)) {
|
|
WARN("Invalid handle 0x%04x passed to GlobalUnlock16!\n",handle);
|
|
return FALSE;
|
|
}
|
|
TRACE("%04x\n", handle );
|
|
if (pArena->lockCount) pArena->lockCount--;
|
|
return pArena->lockCount;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GlobalChangeLockCount (KERNEL.365)
|
|
*
|
|
* This is declared as a register function as it has to preserve
|
|
* *all* registers, even AX/DX !
|
|
*
|
|
*/
|
|
void WINAPI GlobalChangeLockCount16( HGLOBAL16 handle, INT16 delta, CONTEXT *context )
|
|
{
|
|
if ( delta == 1 )
|
|
GlobalLock16( handle );
|
|
else if ( delta == -1 )
|
|
GlobalUnlock16( handle );
|
|
else
|
|
ERR("(%04X, %d): strange delta value\n", handle, delta );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GlobalSize (KERNEL.20)
|
|
* GlobalSize16 (KERNEL32.32)
|
|
*
|
|
* Get the current size of a global memory object.
|
|
*
|
|
* RETURNS
|
|
* Size in bytes of object
|
|
* 0: Failure
|
|
*/
|
|
DWORD WINAPI GlobalSize16(
|
|
HGLOBAL16 handle /* [in] Handle of global memory object */
|
|
) {
|
|
TRACE("%04x\n", handle );
|
|
if (!handle) return 0;
|
|
if (!VALID_HANDLE(handle))
|
|
return 0;
|
|
return GET_ARENA_PTR(handle)->size;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalHandle (KERNEL.21)
|
|
*
|
|
* Get the handle associated with a pointer to the global memory block.
|
|
*
|
|
* NOTES
|
|
* Why is GlobalHandleToSel used here with the sel as input?
|
|
*
|
|
* RETURNS
|
|
* Handle: Success
|
|
* NULL: Failure
|
|
*/
|
|
DWORD WINAPI GlobalHandle16(
|
|
WORD sel /* [in] Address of global memory block */
|
|
) {
|
|
TRACE("%04x\n", sel );
|
|
if (!VALID_HANDLE(sel)) {
|
|
WARN("Invalid handle 0x%04x passed to GlobalHandle16!\n",sel);
|
|
return 0;
|
|
}
|
|
return MAKELONG( GET_ARENA_PTR(sel)->handle, GlobalHandleToSel16(sel) );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GlobalHandleNoRIP (KERNEL.159)
|
|
*/
|
|
DWORD WINAPI GlobalHandleNoRIP16( WORD sel )
|
|
{
|
|
int i;
|
|
for (i = globalArenaSize-1 ; i>=0 ; i--) {
|
|
if (pGlobalArena[i].size!=0 && pGlobalArena[i].handle == sel)
|
|
return MAKELONG( GET_ARENA_PTR(sel)->handle, GlobalHandleToSel16(sel) );
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalFlags (KERNEL.22)
|
|
*
|
|
* Get information about a global memory object.
|
|
*
|
|
* NOTES
|
|
* Should this return GMEM_INVALID_HANDLE instead of 0 on invalid
|
|
* handle?
|
|
*
|
|
* RETURNS
|
|
* 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);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LockSegment (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;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* UnlockSegment (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...) */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalCompact (KERNEL.25)
|
|
*/
|
|
DWORD WINAPI GlobalCompact16( DWORD desired )
|
|
{
|
|
return GLOBAL_MAX_ALLOC_SIZE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalFreeAll (KERNEL.26)
|
|
*/
|
|
void WINAPI GlobalFreeAll16( HGLOBAL16 owner )
|
|
{
|
|
int i;
|
|
GLOBALARENA *pArena;
|
|
|
|
pArena = pGlobalArena;
|
|
for (i = 0; i < globalArenaSize; i++, pArena++)
|
|
{
|
|
if ((pArena->size != 0) && (pArena->hOwner == owner))
|
|
GlobalFree16( pArena->handle );
|
|
}
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalWire (KERNEL.111)
|
|
* GlobalWire16 (KERNEL32.29)
|
|
*/
|
|
SEGPTR WINAPI GlobalWire16( HGLOBAL16 handle )
|
|
{
|
|
return WIN16_GlobalLock16( handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalUnWire (KERNEL.112)
|
|
* GlobalUnWire16 (KERNEL32.30)
|
|
*/
|
|
BOOL16 WINAPI GlobalUnWire16( HGLOBAL16 handle )
|
|
{
|
|
return !GlobalUnlock16( handle );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SetSwapAreaSize (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;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetFreeSpace (KERNEL.169)
|
|
*/
|
|
DWORD WINAPI GetFreeSpace16( UINT16 wFlags )
|
|
{
|
|
MEMORYSTATUS ms;
|
|
GlobalMemoryStatus( &ms );
|
|
return min( ms.dwAvailVirtual, MAXLONG );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GlobalDOSAlloc (KERNEL.184)
|
|
*
|
|
* Allocate memory in the first MB.
|
|
*
|
|
* RETURNS
|
|
* Address (HW=Paragraph segment; LW=Selector)
|
|
*/
|
|
DWORD WINAPI GlobalDOSAlloc16(
|
|
DWORD size /* [in] Number of bytes to be allocated */
|
|
) {
|
|
UINT16 uParagraph;
|
|
LPVOID lpBlock = DOSMEM_AllocBlock( size, &uParagraph );
|
|
|
|
if( lpBlock )
|
|
{
|
|
HMODULE16 hModule = GetModuleHandle16("KERNEL");
|
|
WORD wSelector;
|
|
GLOBALARENA *pArena;
|
|
|
|
wSelector = GLOBAL_CreateBlock(GMEM_FIXED, lpBlock, size, hModule, LDT_FLAGS_DATA );
|
|
pArena = GET_ARENA_PTR(wSelector);
|
|
pArena->flags |= GA_DOSMEM;
|
|
return MAKELONG(wSelector,uParagraph);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalDOSFree (KERNEL.185)
|
|
*
|
|
* Free memory allocated with GlobalDOSAlloc
|
|
*
|
|
* 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( lpBlock ) )
|
|
GLOBAL_FreeBlock( sel );
|
|
sel = 0;
|
|
}
|
|
return sel;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalPageLock (KERNEL.191)
|
|
* GlobalSmartPageLock(KERNEL.230)
|
|
*/
|
|
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)
|
|
* GlobalSmartPageUnlock(KERNEL.231)
|
|
*/
|
|
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);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalFix (KERNEL.197)
|
|
* GlobalFix16 (KERNEL32.27)
|
|
*/
|
|
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);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalUnfix (KERNEL.198)
|
|
* GlobalUnfix16 (KERNEL32.28)
|
|
*/
|
|
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;
|
|
}
|
|
|
|
|
|
/************************************************************************
|
|
* GlobalMasterHandle (KERNEL.28)
|
|
*
|
|
*
|
|
* Should return selector and handle of the information structure for
|
|
* the global heap. selector and handle are stored in the THHOOK as
|
|
* pGlobalHeap and hGlobalHeap.
|
|
* As Wine doesn't have this structure, we return both values as zero
|
|
* Applications should interpret this as "No Global Heap"
|
|
*/
|
|
DWORD WINAPI GlobalMasterHandle16(void)
|
|
{
|
|
FIXME(": stub\n");
|
|
return 0;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GlobalHandleToSel (TOOLHELP.50)
|
|
*
|
|
* FIXME: This is in TOOLHELP but we keep a copy here for now.
|
|
*/
|
|
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;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetFreeMemInfo (KERNEL.316)
|
|
*/
|
|
DWORD WINAPI GetFreeMemInfo16(void)
|
|
{
|
|
SYSTEM_BASIC_INFORMATION info;
|
|
MEMORYSTATUS status;
|
|
|
|
NtQuerySystemInformation( SystemBasicInformation, &info, sizeof(info), NULL );
|
|
GlobalMemoryStatus( &status );
|
|
return MAKELONG( status.dwTotalVirtual / info.PageSize, status.dwAvailVirtual / info.PageSize );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* A20Proc (KERNEL.165)
|
|
*/
|
|
void WINAPI A20Proc16( WORD unused )
|
|
{
|
|
/* this is also a NOP in Windows */
|
|
}
|
|
|
|
/***********************************************************************
|
|
* LimitEMSPages (KERNEL.156)
|
|
*/
|
|
DWORD WINAPI LimitEMSPages16( DWORD unused )
|
|
{
|
|
return 0;
|
|
}
|