wine/memory/local.c
Alexandre Julliard d30dfd24d6 Release 980927
Sun Sep 27 14:25:38 1998  Petter Reinholdtsen <pere@td.org.uit.no>

	* [files/drive.c]
	Make sure GetDriveType32A() handles param NULL.  Added some
	doc on function.

Sun Sep 27 14:07:26 1998  Huw D M Davies <daviesh@abacus.physics.ox.ac.uk>

	* [controls/edit.c] [windows/win.c]
	Don't call SetWindowLong() in EDIT_WM_NCREATE.
	Fix SetWindowLong(GWL_[EX]STYLE) to work for 16bit windows. Remove
	UpdateWindow() call. 

Sun Sep 27 13:41:22 1998  Alexandre Julliard  <julliard@lrc.epfl.ch>

	* [scheduler/*.c] [server/event.c] [server/mutex.c]
	  [server/semaphore.c]
	Implemented server-side synchronisation objects.

Sun Sep 27 01:13:35 1998  Alex Priem <alexp@sci.kun.nl>

	* [dlls/comctl32/treeview.c] [include/treeview.h] [include/comctl.h]
	Treeview implementation.

	* [dlls/comctl32/trackbar.c] [include/trackbar.h] 
	Trackbar implementation.

Sat Sep 26 20:49:13 1998  Ulrich Weigand <weigand@informatik.uni-erlangen.de>

	* [if1632/thunk.c] [tools/build.c] [win32/kernel32.c]
	Bugfix: several problems with flat thunks fixed.

	* [memory/selector.c]
	Bugfix: IsBad...Ptr16 didn't work for limit_in_pages segments.

	* [scheduler/thread.c]
	Bugfix: CreateThread: Allow id parameter == NULL.

	* [objects/gdiobj.c]
	Bugfix: IsGDIObject: Return correct object type for stock objects.

	* [msdos/dpmi.c]
	Bugfix: fixed typo in INT_DoRealModeInt.

	* [msdos/int21.c]
	Bugfix: int21 READ *must* use WIN16_hread, not _hread16.

	* [if1632/kernel.spec] [if1632/dummy.c] [if1632/thunk.c]
	  [loader/ne/module.c] [scheduler/event.c] [scheduler/synchro.c]
	  [scheduler/thread.c] [win32/kernel32.c] [win32/ordinals.c]
	Added names/stubs for all undocumented KERNEL routines (Win95).
	Added the following undoc. 16-bit equivalents to Win32 routines:
	KERNEL.441-443,449-453,456-462,471-476,479-486,488.
	Added stubs for some other KERNEL routines.

	* [memory/heap.c] [memory/global.c] [include/global.h]
	Implemented Local32... 32-bit local heap routines (KERNEL.208-215, 229).

	* [miscemu/instr.c] [loader/module.c] [include/module.h]
	Implemented __GP fault handling and HasGPHandler (KERNEL.338).

	* [misc/error.c]
	Implemented LogParamErrorRegs (KERNEL.327).

	* [loader/task.c] [include/windows.h]
	Implemented GetCodeInfo (KERNEL.104).

	* [loader/task.c] [scheduler/thread.c] [include/thread.h]
	Implemented [GS]etThreadQueue and [GS]etFastQueue (KERNEL.463/4, 624/5).

	* [if1632/gdi.spec] [objects/dc.c] [objects/dib.c]
	  [objects/bitmap.c] [include/windows.h]
	Bugfix: fixed wrong parameter for CreateDIBSection16.
	Added [GS]etDIBColorTable16, stub for GetBoundsRect16.
	Partially implemented BITMAP_GetObject16 for DIBs.

	* [if1632/gdi.spec] [relay32/gdi32.spec] [objects/palette.c]
	Added some GDI stubs.

	* [if1632/Makefile.in] [if1632/display.spec] [if1632/mouse.spec]
	  [if1632/keyboard.spec] [if1632/builtin.c] [windows/keyboard.c]
	Added some stubs for Win16 drivers: KEYBOARD, MOUSE, DISPLAY.

	* [if1632/wprocs.spec] [msdos/vxd.c]
	Added some stubs for VxDs: VMM, ConfigMG, TimerAPI.

	* [msdos/int2f.c]
	Added some stubs for real-mode network drivers.

Sat Sep 26 18:18:18 1998  Marcus Meissner <marcus@jet.franken.de>

	* [configure.in]
	Merged in some more of the FreeBSD ports/emulators/wine patches. 
	(Maintainer(s) of this port: You can just submit these
	patches to Alexandre directly.)

	 * [loader/pe_image.c]
	Check filesize of image against size derived from header
	to spot truncated executeables without crashing.

	* [files/directory.c]
	Set envvar "COMSPEC". One win32(!!) program crashes without it.

	* [multimedia/mmio.c]
	Added mmioSetInfo32.

	* [include/file.h]
	Return STD_ERROR_HANDLE for AUX and PRT dos handles.

	* [loader/module.c]
	Handle executeables with spaces in their names a bit better in
	CreateProcess.

	* [relay32/msvfw32.spec][if1632/msvideo.spec][multimedia/msvideo.c][include/vfw.h]
	Started on MS Video support (can load Win32 ICMs).

	* [tools/testrun]
	A bit smarter use of ps.

	* [memory/virtual.c]
	Report PAGE_GUARDed pages as PAGE_PROTECTED (AutoCAD LT R17 fails
	without that check (since Win95 doesn't know about PAGE_GUARD)).

Sat Sep 26 15:04:05 1998  Ove Kaaven <ovek@arcticnet.no>

	* [include/miscemu.h] [if1632/builtin.c] [loader/task.c]
	  [miscemu/instr.c] [msdos/dpmi.c] [msdos/int21.c]
	  [msdos/interrupts.c] [windows/user.c]
	INT_[S|G]etHandler was renamed to INT_[S|G]etPMHandler.
	Added handlers to deal with real-mode interrupts; DOS
	programs are now able to hook real-mode interrupts.

	* [loader/dos/module.c] [msdos/dosmem.c] [msdos/int21.c]
	Moved real-mode interrupt table initialization to
	msdos/dosmem.c, and made new V86 tasks get a full copy
	of the existing "system memory" instead of almost empty
	space. Misc fixes.

	* [include/dosexe.h] [loader/dos/module.c] [msdos/dpmi.c]
	  [msdos/int2f.c]
	First shot at letting DOS programs start up DPMI (but DPMI
	is still disabled for DOS programs, for pkunzip's sake).

	* [include/debugger.h] [debugger/break.c] [debugger/dbg.y]
	  [debugger/registers.c] [debugger/memory.c] [debugger/info.c]
	  [loader/dos/dosvm.c]
	First shot at making Wine's debugger work for DOS programs.
	The -debug flag works, as do "nexti" and "stepi".

Sat Sep 26 13:13:13 1998  Juergen Schmied <juergen.schmied@metronet.de>

	* [dlls/shell32/dataobject.c]
	New classes IEnumFORMATETC implemented, IDataObject stubs.
	
	* [dlls/shell32/*.*][relay32/shell32.spec]
	Bugfixes.
	New: ICM_InsertItem(), ILCreateFromPath().
	Implemented: ILCloneFirst().
	Stubs: ILIsEqual(), ILFindChild(), SHLogILFromFSIL(),
	  PathMatchSpec(), PathIsExe().
	Changed: ILGetSize(), _ILIsDesktop(), PathCombine().

	* [include/shlobj.h]
	New SHLGUID's
	New structures: DVTARGETDEVICE32, STGMEDIUM32, FORMATETC32,
	CLIPFORMAT32.
	New interfaces: IEnumFORMATETC, IDataObject, ICommDlgBrowser
	IDockingWindowFrame, IServiceProvider.

	* [dlls/shell32/folders.c]
	Stubs for IShellLink.

	* [loader/resource.c]
	Small fixes.

	* [misc/crtdll.c][relay32/crtdll.spec]
	New __dllonexit().

	* [windows/message.c]
	SendNotifyMessageA, SendMessageCallBack32A half implemented.

	* [controls/edit.c]
	EDIT_WM_SetText set EF_UPDATE flag not for ES_MULTILINE.

	* [files/file.c]
	Handling of fileposition fixed.

Fri Sep 25 18:13:30 1998  Patrik Stridvall <ps@leissner.se>

	* [include/windows.h] [include/wintypes.h]
	  [ole/ole2nls.h] [relay32/kernel32.spec]
	Implemented EnumDateFormats and EnumTimeFormats.
	Only adds US English support.

	* [Makefile.in] [configure.in] 
	  [dlls/Makefile.in] [dlls/psapi/Makefile.in] 
	  [dlls/psapi/psapi_main.c] 
	New files to implement stubs for PSAPI.DLL (NT only).

	* [relay32/Makefile.in] [relay32/builtin32.c] 
	  [relay32/psapi.spec]
	New spec file for PSAPI.DLL (NT only).

	* [scheduler/handle.c]
	HANDLE_GetObjPtr should only interpret the pseudo handles as the
	current thread or the current process if a thread or a process is
	requested.

	* [include/winversion.h] [misc/version.c]
	Adds the global function VERSION_GetVersion() so functions can
	have different behavior depending on the -winver flag.

	* [include/oledlg.h] [ole/oledlg.c]
	Minor fixes. 

	* [windows/winproc.c]
	Minor changes.

	* [include/imm.h] [misc/imm.c]
	Now returns correct values under both Windows 95 and NT 4.0.

Thu Sep 24 22:11:44 1998  Kristian Nielsen  <kristian.nielsen@risoe.dk>

	* [configure.in] [include/acconfig.h] [include/thread.h]
	  [scheduler/sysdeps.c]
	Autoconfig test for non-reentrant libc.

Wed Sep 23 19:52:12 1998  Matthew Becker <mbecker@glasscity.net>

	* [*/*.c]
	Miscellaneous documentation updates and debugging output 
	standardizations.

	* [objects/clipping.c]
	Added ExtSelectClipRgn.

Wed Sep 23 00:03:28 EDT 1998  Pete Ratzlaff <pratzlaff@cfa.harvard.edu>

	* [include/windows.h] [if1632/user.spec] [relay32/user32.spec]
	  [windows/keyboard.c]
	Added, marginally implemented, GetKeyboardLayoutName().
	Only returns US English keyboard name.

Tue Sep 22 16:32:41 1998  Marcel Baur <mbaur@iiic.ethz.ch>

	* [programs/control/*]
	New Winelib application.

Mon Sep 21 00:29:18 1998  Peter Hunnisett <hunnise@nortel.ca>

	* [include/dplay.h][multimedia/dplay.c][ole/compobj.c]
	Added all DirectPlayLobby interfaces and enhanced DirectPlay
	and DirectPlayLobby support. Still not all that much. Useful
	enough if you just need to start a program, don't try any
	real dplay/lobby stuff.

	* [documentation/status/directplay]
	Added a very little bit.

	* [graphics/ddraw.c]
	- Call to SetWindowLong32A wasn't working because there was no
	  memory set aside when the window class was registered.
	- Fixed some xlib reference counting and change the behaviour
	  of DirectDrawSurface3_SetPalette to mimic observed behaviour
	  (palette is associated will all backbuffers)
	- Also stored all palette colour fields and spit back our saved
	  colour fields rather than query X for them.
	- Added plenty of AddRef and Release traces.
	- Added Xlib support for using -desktop option.
	- Fixed Xlib message handling. Messages weren't being passed to
	  the application. Fixes mouse movements in some xlib DDraw games.
	- Added a few stubs.

	* [windows/win.c][include/winerror.h]
	Fixed up some error handling in WIN_SetWindowLong. SetLastError
	wasn't being used. Could cause problems with 0 return codes.
	Added new error in winerror (1400).

	* [AUTHORS] [include/authors.h]
	Added myself as a Wine author.

Sun Sep 20 21:22:44 1998  Alexander Larsson  <alla@lysator.liu.se>

	* [loader/module.c]
	Changed GetModuleFileName32A so that is returns the
	long version of the filename. Note that just the name
	is long, not the directories.

Sat Sep 19 20:05:30 1998 Per Ångström <pang@mind.nu> 

	* [controls/menu.c]
	Made a couple of fixes to make life easier for applications that alter
	their menus at runtime.

	* [windows/defdlg.c]
	Removed the cast of the return value from dialog procedures to a 16-bit
	bool. The return value needs to retain all its 32 bits, since it is not 
	always a bool, such as when responding to the WM_NCHITTEST message.

Fri Sep 18 11:30:38 1998  Sergey Turchanov <turchanov@usa.net>

	* [loader/resource.c]
	Fixed very funny bug (though gravely affecting further excecution)
	with FindResource[Ex]32 functions.

	* [include/multimon.h] [windows/multimon.c] [relay32/user32.spec]
	  [include/windows.h] [windows/sysmetrics.c]
	Default implementation for Multimonitor API.

	* [include/windows.h] [windows/winpos.c]
	Fixed incorrect declaration (and behaviour) of GetWindowRect32.

Wed Sep 16 10:21:15 1998  Gerard Patel <G.Patel@Wanadoo.fr>

	* [controls/edit.c]
	Fixed EDIT_EM_GetLine to use correctly length of lines.

Tue Sep 15 20:40:16 1998  Eric Kohl <ekohl@abo.rhein-zeitung.de>

	* [misc/tweak.c][include/tweak.h][controls/menu.c]
	Replaced the tweak graphic routines by calls to DrawEdge32().

	* [misc/tweak.c][include/tweak.h][documentation/win95look]
	  [wine.ini][*/*]
	Changed "look and feel" selection. Allows Win3.1, Win95 and
	Win98 (no GUI code implemented) look and feel.

	* [dlls/comctl32/header.c][include/header.h][include/commctrl.h]
	Started callback item support and did some minor improvements.

	* [dlls/comctl32/imagelist.c]
	Fixed bug in transparent image display.
	ImageList_GetIcon is still buggy :-(

	* [dlls/comctl32/toolbar.c]
	Fixed button drawing (partial hack).

	* [dlls/comctl32/commctrl.c]
	Fixed MenuHelp().

	* [controls/button.c]
	Added 3d effect for groupbox.

	* [windows/msgbox.c]
	Added font support for message boxes.

	* [windows/nonclient.c]
	Fixed window moving bug.

	* [dlls/comctl32/*.c]
	Various improvements.

	* [dlls/comctl32/listview.c][dlls/comctl32/rebar.c]
	  [include/commctrl.h]
	More messages.

	* [windows/syscolor.c][include/windows.h]
	Introduced new Win98 system colors.

Tue Sep 15 18:29:45 1998 Wesley Filardo <eightknots@aol.com>

	* [files/profile.c]
	Added support in PROFILE_LoadWineIni for -config option

	* [misc/main.c] [include/options.h]
	Added -config option.

Tue Sep 15 18:22:26 1998  Petter Reinholdtsen <pere@td.org.uit.no>

	* [documentation/Makefile.in]
	Make sure directory exists before installing into it.

Tue Sep 15 01:47:33 1998  Pablo Saratxaga <pablo.sarachaga@ping.be>

	* [ole/nls/*] [ole/ole2nls.c] [include/winnls.h]
	Fixed a few errors and completed some NLS files.

Mon Sep 14 01:23:45 1998  Joseph Pranevich <knight@baltimore.wwaves.com>

	* [include/miscemu.h] [msdos/interrupts.c]
	Removed a compilation warning, added INT 25 to the list of interrupts
	callable from DOS applications, added a debug message when unsupported
	interrupts are used.

Sun Sep 13 19:55:22 1998  Lawson Whitney <lawson_whitney@juno.com>

	* [if1632/relay.c]
	CallProcEx32W should not reverse arguments.

Sun Aug 17 21:18:12 1998  Eric Pouech  <eric.pouech@lemel.fr>

	* [multimedia/midi.c] [multimedia/init.c] [multimedia/mmsys.c] 
	  [include/multimedia.h] [include/mmsystem.h] 
	  [multimedia/Makefile.in] [multimedia/midipatch.c]
	  [if1632/multimedia.spec]
	Made MIDI input and output functional on OSS capable systems.

	* [multimedia/timer.c]
	Changes to trigger callbacks at the accurate pace even when
	fake timers are used.
1998-09-27 18:28:36 +00:00

1838 lines
54 KiB
C

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