2 * Global heap functions
4 * Copyright 1995 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 /* 0xffff sometimes seems to mean: CURRENT_DS */
23 #include "wine/port.h"
25 #include <sys/types.h>
31 #ifdef HAVE_SYS_SYSCTL_H
32 #include <sys/sysctl.h>
35 #include "wine/winbase16.h"
36 #include "wine/exception.h"
39 #include "selectors.h"
41 #include "stackframe.h"
43 #include "wine/debug.h"
45 #include "msvcrt/excpt.h"
47 WINE_DEFAULT_DEBUG_CHANNEL(global
);
49 /* Global arena block */
52 DWORD base
; /* Base address (0 if discarded) */
53 DWORD size
; /* Size in bytes (0 indicates a free block) */
54 HGLOBAL16 handle
; /* Handle for this block */
55 HGLOBAL16 hOwner
; /* Owner of this block */
56 BYTE lockCount
; /* Count of GlobalFix() calls */
57 BYTE pageLockCount
; /* Count of GlobalPageLock() calls */
58 BYTE flags
; /* Allocation flags */
59 BYTE selCount
; /* Number of selectors allocated for this block */
62 /* Flags definitions */
63 #define GA_MOVEABLE 0x02 /* same as GMEM_MOVEABLE */
64 #define GA_DGROUP 0x04
65 #define GA_DISCARDABLE 0x08
66 #define GA_IPCSHARE 0x10 /* same as GMEM_DDESHARE */
67 #define GA_DOSMEM 0x20
70 static GLOBALARENA
*pGlobalArena
= NULL
;
71 static int globalArenaSize
= 0;
73 #define GLOBAL_MAX_ALLOC_SIZE 0x00ff0000 /* Largest allocation is 16M - 64K */
75 #define VALID_HANDLE(handle) (((handle)>>__AHSHIFT)<globalArenaSize)
76 #define GET_ARENA_PTR(handle) (pGlobalArena + ((handle) >> __AHSHIFT))
78 /* filter for page-fault exceptions */
79 /* It is possible for a bogus global pointer to cause a */
80 /* page zero reference, so I include EXCEPTION_PRIV_INSTRUCTION too. */
82 static WINE_EXCEPTION_FILTER(page_fault
)
84 switch (GetExceptionCode()) {
85 case (EXCEPTION_ACCESS_VIOLATION
):
86 case (EXCEPTION_PRIV_INSTRUCTION
):
87 return EXCEPTION_EXECUTE_HANDLER
;
89 return EXCEPTION_CONTINUE_SEARCH
;
93 /***********************************************************************
96 * Return the arena for a given selector, growing the arena array if needed.
98 static GLOBALARENA
*GLOBAL_GetArena( WORD sel
, WORD selcount
)
100 if (((sel
>> __AHSHIFT
) + selcount
) > globalArenaSize
)
102 int newsize
= ((sel
>> __AHSHIFT
) + selcount
+ 0xff) & ~0xff;
103 GLOBALARENA
*pNewArena
= realloc( pGlobalArena
,
104 newsize
* sizeof(GLOBALARENA
) );
105 if (!pNewArena
) return 0;
106 pGlobalArena
= pNewArena
;
107 memset( pGlobalArena
+ globalArenaSize
, 0,
108 (newsize
- globalArenaSize
) * sizeof(GLOBALARENA
) );
109 globalArenaSize
= newsize
;
111 return pGlobalArena
+ (sel
>> __AHSHIFT
);
114 void debug_handles(void)
118 for (i
= globalArenaSize
-1 ; i
>=0 ; i
--) {
119 if (pGlobalArena
[i
].size
!=0 && (pGlobalArena
[i
].handle
& 0x8000)){
121 DPRINTF("0x%08x, ",pGlobalArena
[i
].handle
);
129 /***********************************************************************
132 * Create a global heap block for a fixed range of linear memory.
134 HGLOBAL16
GLOBAL_CreateBlock( WORD flags
, const void *ptr
, DWORD size
,
135 HGLOBAL16 hOwner
, unsigned char selflags
)
140 /* Allocate the selector(s) */
142 sel
= SELECTOR_AllocBlock( ptr
, size
, selflags
);
144 selcount
= (size
+ 0xffff) / 0x10000;
146 if (!(pArena
= GLOBAL_GetArena( sel
, selcount
)))
148 SELECTOR_FreeBlock( sel
);
152 /* Fill the arena block */
154 pArena
->base
= (DWORD
)ptr
;
155 pArena
->size
= GetSelectorLimit16(sel
) + 1;
156 pArena
->handle
= (flags
& GMEM_MOVEABLE
) ? sel
- 1 : sel
;
157 pArena
->hOwner
= hOwner
;
158 pArena
->lockCount
= 0;
159 pArena
->pageLockCount
= 0;
160 pArena
->flags
= flags
& GA_MOVEABLE
;
161 if (flags
& GMEM_DISCARDABLE
) pArena
->flags
|= GA_DISCARDABLE
;
162 if (flags
& GMEM_DDESHARE
) pArena
->flags
|= GA_IPCSHARE
;
163 if (!(selflags
& (WINE_LDT_FLAGS_CODE
^WINE_LDT_FLAGS_DATA
))) pArena
->flags
|= GA_DGROUP
;
164 pArena
->selCount
= selcount
;
165 if (selcount
> 1) /* clear the next arena blocks */
166 memset( pArena
+ 1, 0, (selcount
- 1) * sizeof(GLOBALARENA
) );
168 return pArena
->handle
;
172 /***********************************************************************
175 * Free a block allocated by GLOBAL_CreateBlock, without touching
176 * the associated linear memory range.
178 BOOL16
GLOBAL_FreeBlock( HGLOBAL16 handle
)
183 if (!handle
) return TRUE
;
184 sel
= GlobalHandleToSel16( handle
);
185 if (!VALID_HANDLE(sel
))
187 pArena
= GET_ARENA_PTR(sel
);
188 SELECTOR_FreeBlock( sel
);
189 memset( pArena
, 0, sizeof(GLOBALARENA
) );
193 /***********************************************************************
196 BOOL16
GLOBAL_MoveBlock( HGLOBAL16 handle
, const void *ptr
, DWORD size
)
201 if (!handle
) return TRUE
;
202 sel
= GlobalHandleToSel16( handle
);
203 if (!VALID_HANDLE(sel
))
205 pArena
= GET_ARENA_PTR(sel
);
206 if (pArena
->selCount
!= 1)
209 pArena
->base
= (DWORD
)ptr
;
211 SELECTOR_ReallocBlock( sel
, ptr
, size
);
215 /***********************************************************************
218 * Implementation of GlobalAlloc16()
220 HGLOBAL16
GLOBAL_Alloc( UINT16 flags
, DWORD size
, HGLOBAL16 hOwner
, unsigned char selflags
)
225 TRACE("%ld flags=%04x\n", size
, flags
);
227 /* If size is 0, create a discarded block */
229 if (size
== 0) return GLOBAL_CreateBlock( flags
, NULL
, 1, hOwner
, selflags
);
233 if (size
>= GLOBAL_MAX_ALLOC_SIZE
- 0x1f) return 0;
234 size
= (size
+ 0x1f) & ~0x1f;
236 /* Allocate the linear memory */
237 ptr
= HeapAlloc( GetProcessHeap(), 0, size
);
238 /* FIXME: free discardable blocks and try again? */
241 /* Allocate the selector(s) */
243 handle
= GLOBAL_CreateBlock( flags
, ptr
, size
, hOwner
, selflags
);
246 HeapFree( GetProcessHeap(), 0, ptr
);
250 if (flags
& GMEM_ZEROINIT
) memset( ptr
, 0, size
);
254 /***********************************************************************
255 * GlobalAlloc (KERNEL.15)
256 * GlobalAlloc16 (KERNEL32.24)
261 HGLOBAL16 WINAPI
GlobalAlloc16(
262 UINT16 flags
, /* [in] Object allocation attributes */
263 DWORD size
/* [in] Number of bytes to allocate */
265 HANDLE16 owner
= GetCurrentPDB16();
267 if (flags
& GMEM_DDESHARE
)
268 owner
= GetExePtr(owner
); /* Make it a module handle */
269 return GLOBAL_Alloc( flags
, size
, owner
, WINE_LDT_FLAGS_DATA
);
273 /***********************************************************************
274 * GlobalReAlloc (KERNEL.16)
275 * GlobalReAlloc16 (KERNEL32.@)
280 HGLOBAL16 WINAPI
GlobalReAlloc16(
281 HGLOBAL16 handle
, /* [in] Handle of global memory object */
282 DWORD size
, /* [in] New size of block */
283 UINT16 flags
/* [in] How to reallocate object */
288 GLOBALARENA
*pArena
, *pNewArena
;
289 WORD sel
= GlobalHandleToSel16( handle
);
291 TRACE("%04x %ld flags=%04x\n",
292 handle
, size
, flags
);
293 if (!handle
) return 0;
295 if (!VALID_HANDLE(handle
)) {
296 WARN("Invalid handle 0x%04x!\n", handle
);
299 pArena
= GET_ARENA_PTR( handle
);
301 /* Discard the block if requested */
303 if ((size
== 0) && (flags
& GMEM_MOVEABLE
) && !(flags
& GMEM_MODIFY
))
305 if (!(pArena
->flags
& GA_MOVEABLE
) ||
306 !(pArena
->flags
& GA_DISCARDABLE
) ||
307 (pArena
->lockCount
> 0) || (pArena
->pageLockCount
> 0)) return 0;
308 HeapFree( GetProcessHeap(), 0, (void *)pArena
->base
);
311 /* Note: we rely on the fact that SELECTOR_ReallocBlock won't
312 * change the selector if we are shrinking the block.
313 * FIXME: shouldn't we keep selectors until the block is deleted?
315 SELECTOR_ReallocBlock( sel
, 0, 1 );
321 if (size
> GLOBAL_MAX_ALLOC_SIZE
- 0x20) return 0;
322 if (size
== 0) size
= 0x20;
323 else size
= (size
+ 0x1f) & ~0x1f;
325 /* Change the flags */
327 if (flags
& GMEM_MODIFY
)
329 /* Change the flags, leaving GA_DGROUP alone */
330 pArena
->flags
= (pArena
->flags
& GA_DGROUP
) | (flags
& GA_MOVEABLE
);
331 if (flags
& GMEM_DISCARDABLE
) pArena
->flags
|= GA_DISCARDABLE
;
335 /* Reallocate the linear memory */
337 ptr
= (void *)pArena
->base
;
338 oldsize
= pArena
->size
;
339 TRACE("oldbase %p oldsize %08lx newsize %08lx\n", ptr
,oldsize
,size
);
340 if (ptr
&& (size
== oldsize
)) return handle
; /* Nothing to do */
342 if (pArena
->flags
& GA_DOSMEM
)
343 newptr
= DOSMEM_ResizeBlock(ptr
, size
, NULL
);
345 /* if more then one reader (e.g. some pointer has been given out by GetVDMPointer32W16),
346 only try to realloc in place */
347 newptr
= HeapReAlloc( GetProcessHeap(),
348 (pArena
->pageLockCount
> 0)?HEAP_REALLOC_IN_PLACE_ONLY
:0, ptr
, size
);
351 FIXME("Realloc failed lock %d\n",pArena
->pageLockCount
);
352 if (pArena
->pageLockCount
<1)
354 HeapFree( GetProcessHeap(), 0, ptr
);
355 SELECTOR_FreeBlock( sel
);
356 memset( pArena
, 0, sizeof(GLOBALARENA
) );
362 /* Reallocate the selector(s) */
364 sel
= SELECTOR_ReallocBlock( sel
, ptr
, size
);
367 HeapFree( GetProcessHeap(), 0, ptr
);
368 memset( pArena
, 0, sizeof(GLOBALARENA
) );
371 selcount
= (size
+ 0xffff) / 0x10000;
373 if (!(pNewArena
= GLOBAL_GetArena( sel
, selcount
)))
375 HeapFree( GetProcessHeap(), 0, ptr
);
376 SELECTOR_FreeBlock( sel
);
380 /* Fill the new arena block
381 As we may have used HEAP_REALLOC_IN_PLACE_ONLY, areas may overlap*/
383 if (pNewArena
!= pArena
) memmove( pNewArena
, pArena
, sizeof(GLOBALARENA
) );
384 pNewArena
->base
= (DWORD
)ptr
;
385 pNewArena
->size
= GetSelectorLimit16(sel
) + 1;
386 pNewArena
->selCount
= selcount
;
387 pNewArena
->handle
= (pNewArena
->flags
& GA_MOVEABLE
) ? sel
- 1 : sel
;
389 if (selcount
> 1) /* clear the next arena blocks */
390 memset( pNewArena
+ 1, 0, (selcount
- 1) * sizeof(GLOBALARENA
) );
392 if ((oldsize
< size
) && (flags
& GMEM_ZEROINIT
))
393 memset( (char *)ptr
+ oldsize
, 0, size
- oldsize
);
394 return pNewArena
->handle
;
398 /***********************************************************************
399 * GlobalFree (KERNEL.17)
400 * GlobalFree16 (KERNEL32.31)
405 HGLOBAL16 WINAPI
GlobalFree16(
406 HGLOBAL16 handle
/* [in] Handle of global memory object */
410 if (!VALID_HANDLE(handle
)) {
411 WARN("Invalid handle 0x%04x passed to GlobalFree16!\n",handle
);
414 ptr
= (void *)GET_ARENA_PTR(handle
)->base
;
416 TRACE("%04x\n", handle
);
417 if (!GLOBAL_FreeBlock( handle
)) return handle
; /* failed */
418 if (ptr
) HeapFree( GetProcessHeap(), 0, ptr
);
423 /***********************************************************************
424 * GlobalLock (KERNEL.18)
426 * This is the GlobalLock16() function used by 16-bit code.
428 SEGPTR WINAPI
WIN16_GlobalLock16( HGLOBAL16 handle
)
430 WORD sel
= GlobalHandleToSel16( handle
);
431 TRACE("(%04x) -> %08lx\n", handle
, MAKELONG( 0, sel
) );
435 if (handle
== (HGLOBAL16
)-1) handle
= CURRENT_DS
;
437 if (!VALID_HANDLE(handle
)) {
438 WARN("Invalid handle 0x%04x passed to WIN16_GlobalLock16!\n",handle
);
441 else if (!GET_ARENA_PTR(handle
)->base
)
444 GET_ARENA_PTR(handle
)->lockCount
++;
447 CURRENT_STACK16
->ecx
= sel
; /* selector must be returned in CX as well */
448 return MAKESEGPTR( sel
, 0 );
452 /**********************************************************************
453 * K32WOWGlobalLock16 (KERNEL32.60)
455 SEGPTR WINAPI
K32WOWGlobalLock16( HGLOBAL16 hMem
)
457 return WIN16_GlobalLock16( hMem
);
461 /***********************************************************************
462 * GlobalLock16 (KERNEL32.25)
464 * This is the GlobalLock16() function used by 32-bit code.
467 * Pointer to first byte of memory block
470 LPVOID WINAPI
GlobalLock16(
471 HGLOBAL16 handle
/* [in] Handle of global memory object */
473 if (!handle
) return 0;
474 if (!VALID_HANDLE(handle
))
476 GET_ARENA_PTR(handle
)->lockCount
++;
477 return (LPVOID
)GET_ARENA_PTR(handle
)->base
;
481 /***********************************************************************
482 * GlobalUnlock (KERNEL.19)
483 * GlobalUnlock16 (KERNEL32.26)
485 * Should the return values be cast to booleans?
488 * TRUE: Object is still locked
489 * FALSE: Object is unlocked
491 BOOL16 WINAPI
GlobalUnlock16(
492 HGLOBAL16 handle
/* [in] Handle of global memory object */
494 GLOBALARENA
*pArena
= GET_ARENA_PTR(handle
);
495 if (!VALID_HANDLE(handle
)) {
496 WARN("Invalid handle 0x%04x passed to GlobalUnlock16!\n",handle
);
499 TRACE("%04x\n", handle
);
500 if (pArena
->lockCount
) pArena
->lockCount
--;
501 return pArena
->lockCount
;
504 /***********************************************************************
505 * GlobalChangeLockCount (KERNEL.365)
507 * This is declared as a register function as it has to preserve
508 * *all* registers, even AX/DX !
511 void WINAPI
GlobalChangeLockCount16( HGLOBAL16 handle
, INT16 delta
,
515 GlobalLock16( handle
);
516 else if ( delta
== -1 )
517 GlobalUnlock16( handle
);
519 ERR("(%04X, %d): strange delta value\n", handle
, delta
);
522 /***********************************************************************
523 * GlobalSize (KERNEL.20)
524 * GlobalSize16 (KERNEL32.32)
526 * Size in bytes of object
529 DWORD WINAPI
GlobalSize16(
530 HGLOBAL16 handle
/* [in] Handle of global memory object */
532 TRACE("%04x\n", handle
);
533 if (!handle
) return 0;
534 if (!VALID_HANDLE(handle
))
536 return GET_ARENA_PTR(handle
)->size
;
540 /***********************************************************************
541 * GlobalHandle (KERNEL.21)
543 * Why is GlobalHandleToSel used here with the sel as input?
549 DWORD WINAPI
GlobalHandle16(
550 WORD sel
/* [in] Address of global memory block */
552 TRACE("%04x\n", sel
);
553 if (!VALID_HANDLE(sel
)) {
554 WARN("Invalid handle 0x%04x passed to GlobalHandle16!\n",sel
);
557 return MAKELONG( GET_ARENA_PTR(sel
)->handle
, GlobalHandleToSel16(sel
) );
560 /***********************************************************************
561 * GlobalHandleNoRIP (KERNEL.159)
563 DWORD WINAPI
GlobalHandleNoRIP16( WORD sel
)
566 for (i
= globalArenaSize
-1 ; i
>=0 ; i
--) {
567 if (pGlobalArena
[i
].size
!=0 && pGlobalArena
[i
].handle
== sel
)
568 return MAKELONG( GET_ARENA_PTR(sel
)->handle
, GlobalHandleToSel16(sel
) );
574 /***********************************************************************
575 * GlobalFlags (KERNEL.22)
576 * GlobalFlags16 (KERNEL32.@)
578 * Should this return GMEM_INVALID_HANDLE instead of 0 on invalid
582 * Value specifying flags and lock count
583 * GMEM_INVALID_HANDLE: Invalid handle
585 UINT16 WINAPI
GlobalFlags16(
586 HGLOBAL16 handle
/* [in] Handle of global memory object */
590 TRACE("%04x\n", handle
);
591 if (!VALID_HANDLE(handle
)) {
592 WARN("Invalid handle 0x%04x passed to GlobalFlags16!\n",handle
);
595 pArena
= GET_ARENA_PTR(handle
);
596 return pArena
->lockCount
|
597 ((pArena
->flags
& GA_DISCARDABLE
) ? GMEM_DISCARDABLE
: 0) |
598 ((pArena
->base
== 0) ? GMEM_DISCARDED
: 0);
602 /***********************************************************************
603 * LockSegment (KERNEL.23)
605 HGLOBAL16 WINAPI
LockSegment16( HGLOBAL16 handle
)
607 TRACE("%04x\n", handle
);
608 if (handle
== (HGLOBAL16
)-1) handle
= CURRENT_DS
;
609 if (!VALID_HANDLE(handle
)) {
610 WARN("Invalid handle 0x%04x passed to LockSegment16!\n",handle
);
613 GET_ARENA_PTR(handle
)->lockCount
++;
618 /***********************************************************************
619 * UnlockSegment (KERNEL.24)
621 void WINAPI
UnlockSegment16( HGLOBAL16 handle
)
623 TRACE("%04x\n", handle
);
624 if (handle
== (HGLOBAL16
)-1) handle
= CURRENT_DS
;
625 if (!VALID_HANDLE(handle
)) {
626 WARN("Invalid handle 0x%04x passed to UnlockSegment16!\n",handle
);
629 GET_ARENA_PTR(handle
)->lockCount
--;
630 /* FIXME: this ought to return the lock count in CX (go figure...) */
634 /***********************************************************************
635 * GlobalCompact (KERNEL.25)
637 DWORD WINAPI
GlobalCompact16( DWORD desired
)
639 return GLOBAL_MAX_ALLOC_SIZE
;
643 /***********************************************************************
644 * GlobalFreeAll (KERNEL.26)
646 void WINAPI
GlobalFreeAll16( HGLOBAL16 owner
)
651 pArena
= pGlobalArena
;
652 for (i
= 0; i
< globalArenaSize
; i
++, pArena
++)
654 if ((pArena
->size
!= 0) && (pArena
->hOwner
== owner
))
655 GlobalFree16( pArena
->handle
);
660 /***********************************************************************
661 * GlobalWire (KERNEL.111)
662 * GlobalWire16 (KERNEL32.29)
664 SEGPTR WINAPI
GlobalWire16( HGLOBAL16 handle
)
666 return WIN16_GlobalLock16( handle
);
670 /***********************************************************************
671 * GlobalUnWire (KERNEL.112)
672 * GlobalUnWire16 (KERNEL32.30)
674 BOOL16 WINAPI
GlobalUnWire16( HGLOBAL16 handle
)
676 return !GlobalUnlock16( handle
);
680 /***********************************************************************
681 * SetSwapAreaSize (KERNEL.106)
683 LONG WINAPI
SetSwapAreaSize16( WORD size
)
685 FIXME("(%d) - stub!\n", size
);
686 return MAKELONG( size
, 0xffff );
690 /***********************************************************************
691 * GlobalLRUOldest (KERNEL.163)
693 HGLOBAL16 WINAPI
GlobalLRUOldest16( HGLOBAL16 handle
)
695 TRACE("%04x\n", handle
);
696 if (handle
== (HGLOBAL16
)-1) handle
= CURRENT_DS
;
701 /***********************************************************************
702 * GlobalLRUNewest (KERNEL.164)
704 HGLOBAL16 WINAPI
GlobalLRUNewest16( HGLOBAL16 handle
)
706 TRACE("%04x\n", handle
);
707 if (handle
== (HGLOBAL16
)-1) handle
= CURRENT_DS
;
712 /***********************************************************************
713 * GetFreeSpace (KERNEL.169)
715 DWORD WINAPI
GetFreeSpace16( UINT16 wFlags
)
718 GlobalMemoryStatus( &ms
);
719 return ms
.dwAvailVirtual
;
722 /***********************************************************************
723 * GlobalDOSAlloc (KERNEL.184)
725 * Address (HW=Paragraph segment; LW=Selector)
727 DWORD WINAPI
GlobalDOSAlloc16(
728 DWORD size
/* [in] Number of bytes to be allocated */
731 LPVOID lpBlock
= DOSMEM_GetBlock( size
, &uParagraph
);
735 HMODULE16 hModule
= GetModuleHandle16("KERNEL");
739 wSelector
= GLOBAL_CreateBlock(GMEM_FIXED
, lpBlock
, size
, hModule
, WINE_LDT_FLAGS_DATA
);
740 pArena
= GET_ARENA_PTR(wSelector
);
741 pArena
->flags
|= GA_DOSMEM
;
742 return MAKELONG(wSelector
,uParagraph
);
748 /***********************************************************************
749 * GlobalDOSFree (KERNEL.185)
754 WORD WINAPI
GlobalDOSFree16(
755 WORD sel
/* [in] Selector */
757 DWORD block
= GetSelectorBase(sel
);
759 if( block
&& block
< 0x100000 )
761 LPVOID lpBlock
= DOSMEM_MapDosToLinear( block
);
762 if( DOSMEM_FreeBlock( lpBlock
) )
763 GLOBAL_FreeBlock( sel
);
770 /***********************************************************************
771 * GlobalPageLock (KERNEL.191)
772 * GlobalSmartPageLock(KERNEL.230)
774 WORD WINAPI
GlobalPageLock16( HGLOBAL16 handle
)
776 TRACE("%04x\n", handle
);
777 if (!VALID_HANDLE(handle
)) {
778 WARN("Invalid handle 0x%04x passed to GlobalPageLock!\n",handle
);
781 return ++(GET_ARENA_PTR(handle
)->pageLockCount
);
785 /***********************************************************************
786 * GlobalPageUnlock (KERNEL.192)
787 * GlobalSmartPageUnlock(KERNEL.231)
789 WORD WINAPI
GlobalPageUnlock16( HGLOBAL16 handle
)
791 TRACE("%04x\n", handle
);
792 if (!VALID_HANDLE(handle
)) {
793 WARN("Invalid handle 0x%04x passed to GlobalPageUnlock!\n",handle
);
796 return --(GET_ARENA_PTR(handle
)->pageLockCount
);
800 /***********************************************************************
801 * GlobalFix (KERNEL.197)
802 * GlobalFix16 (KERNEL32.27)
804 WORD WINAPI
GlobalFix16( HGLOBAL16 handle
)
806 TRACE("%04x\n", handle
);
807 if (!VALID_HANDLE(handle
)) {
808 WARN("Invalid handle 0x%04x passed to GlobalFix16!\n",handle
);
811 GET_ARENA_PTR(handle
)->lockCount
++;
813 return GlobalHandleToSel16(handle
);
817 /***********************************************************************
818 * GlobalUnfix (KERNEL.198)
819 * GlobalUnfix16 (KERNEL32.28)
821 void WINAPI
GlobalUnfix16( HGLOBAL16 handle
)
823 TRACE("%04x\n", handle
);
824 if (!VALID_HANDLE(handle
)) {
825 WARN("Invalid handle 0x%04x passed to GlobalUnfix16!\n",handle
);
828 GET_ARENA_PTR(handle
)->lockCount
--;
832 /***********************************************************************
833 * FarSetOwner (KERNEL.403)
835 void WINAPI
FarSetOwner16( HGLOBAL16 handle
, HANDLE16 hOwner
)
837 if (!VALID_HANDLE(handle
)) {
838 WARN("Invalid handle 0x%04x passed to FarSetOwner!\n",handle
);
841 GET_ARENA_PTR(handle
)->hOwner
= hOwner
;
845 /***********************************************************************
846 * FarGetOwner (KERNEL.404)
848 HANDLE16 WINAPI
FarGetOwner16( HGLOBAL16 handle
)
850 if (!VALID_HANDLE(handle
)) {
851 WARN("Invalid handle 0x%04x passed to FarGetOwner!\n",handle
);
854 return GET_ARENA_PTR(handle
)->hOwner
;
858 /***********************************************************************
859 * GlobalHandleToSel (TOOLHELP.50)
861 WORD WINAPI
GlobalHandleToSel16( HGLOBAL16 handle
)
863 if (!handle
) return 0;
864 if (!VALID_HANDLE(handle
)) {
865 WARN("Invalid handle 0x%04x passed to GlobalHandleToSel!\n",handle
);
870 WARN("Program attempted invalid selector conversion\n" );
877 /***********************************************************************
878 * GlobalFirst (TOOLHELP.51)
880 BOOL16 WINAPI
GlobalFirst16( GLOBALENTRY
*pGlobal
, WORD wFlags
)
882 if (wFlags
== GLOBAL_LRU
) return FALSE
;
884 return GlobalNext16( pGlobal
, wFlags
);
888 /***********************************************************************
889 * GlobalNext (TOOLHELP.52)
891 BOOL16 WINAPI
GlobalNext16( GLOBALENTRY
*pGlobal
, WORD wFlags
)
895 if (pGlobal
->dwNext
>= globalArenaSize
) return FALSE
;
896 pArena
= pGlobalArena
+ pGlobal
->dwNext
;
897 if (wFlags
== GLOBAL_FREE
) /* only free blocks */
900 for (i
= pGlobal
->dwNext
; i
< globalArenaSize
; i
++, pArena
++)
901 if (pArena
->size
== 0) break; /* block is free */
902 if (i
>= globalArenaSize
) return FALSE
;
906 pGlobal
->dwAddress
= pArena
->base
;
907 pGlobal
->dwBlockSize
= pArena
->size
;
908 pGlobal
->hBlock
= pArena
->handle
;
909 pGlobal
->wcLock
= pArena
->lockCount
;
910 pGlobal
->wcPageLock
= pArena
->pageLockCount
;
911 pGlobal
->wFlags
= (GetCurrentPDB16() == pArena
->hOwner
);
912 pGlobal
->wHeapPresent
= FALSE
;
913 pGlobal
->hOwner
= pArena
->hOwner
;
914 pGlobal
->wType
= GT_UNKNOWN
;
921 /***********************************************************************
922 * GlobalInfo (TOOLHELP.53)
924 BOOL16 WINAPI
GlobalInfo16( GLOBALINFO
*pInfo
)
929 pInfo
->wcItems
= globalArenaSize
;
930 pInfo
->wcItemsFree
= 0;
931 pInfo
->wcItemsLRU
= 0;
932 for (i
= 0, pArena
= pGlobalArena
; i
< globalArenaSize
; i
++, pArena
++)
933 if (pArena
->size
== 0) pInfo
->wcItemsFree
++;
938 /***********************************************************************
939 * GlobalEntryHandle (TOOLHELP.54)
941 BOOL16 WINAPI
GlobalEntryHandle16( GLOBALENTRY
*pGlobal
, HGLOBAL16 hItem
)
943 GLOBALARENA
*pArena
= GET_ARENA_PTR(hItem
);
945 pGlobal
->dwAddress
= pArena
->base
;
946 pGlobal
->dwBlockSize
= pArena
->size
;
947 pGlobal
->hBlock
= pArena
->handle
;
948 pGlobal
->wcLock
= pArena
->lockCount
;
949 pGlobal
->wcPageLock
= pArena
->pageLockCount
;
950 pGlobal
->wFlags
= (GetCurrentPDB16() == pArena
->hOwner
);
951 pGlobal
->wHeapPresent
= FALSE
;
952 pGlobal
->hOwner
= pArena
->hOwner
;
953 pGlobal
->wType
= GT_UNKNOWN
;
960 /***********************************************************************
961 * GlobalEntryModule (TOOLHELP.55)
963 BOOL16 WINAPI
GlobalEntryModule16( GLOBALENTRY
*pGlobal
, HMODULE16 hModule
,
966 FIXME("(%p, 0x%04x, 0x%04x), stub.\n", pGlobal
, hModule
, wSeg
);
971 /***********************************************************************
972 * MemManInfo (TOOLHELP.72)
974 BOOL16 WINAPI
MemManInfo16( MEMMANINFO
*info
)
979 * Not unsurprisingly although the documention says you
980 * _must_ provide the size in the dwSize field, this function
981 * (under Windows) always fills the structure and returns true.
983 GlobalMemoryStatus( &status
);
984 info
->wPageSize
= getpagesize();
985 info
->dwLargestFreeBlock
= status
.dwAvailVirtual
;
986 info
->dwMaxPagesAvailable
= info
->dwLargestFreeBlock
/ info
->wPageSize
;
987 info
->dwMaxPagesLockable
= info
->dwMaxPagesAvailable
;
988 info
->dwTotalLinearSpace
= status
.dwTotalVirtual
/ info
->wPageSize
;
989 info
->dwTotalUnlockedPages
= info
->dwTotalLinearSpace
;
990 info
->dwFreePages
= info
->dwMaxPagesAvailable
;
991 info
->dwTotalPages
= info
->dwTotalLinearSpace
;
992 info
->dwFreeLinearSpace
= info
->dwMaxPagesAvailable
;
993 info
->dwSwapFilePages
= status
.dwTotalPageFile
/ info
->wPageSize
;
997 /***********************************************************************
998 * GetFreeMemInfo (KERNEL.316)
1000 DWORD WINAPI
GetFreeMemInfo16(void)
1003 MemManInfo16( &info
);
1004 return MAKELONG( info
.dwTotalLinearSpace
, info
.dwMaxPagesAvailable
);
1008 * Win32 Global heap functions (GlobalXXX).
1009 * These functions included in Win32 for compatibility with 16 bit Windows
1010 * Especially the moveable blocks and handles are oldish.
1011 * But the ability to directly allocate memory with GPTR and LPTR is widely
1014 * The handle stuff looks horrible, but it's implemented almost like Win95
1019 #define MAGIC_GLOBAL_USED 0x5342
1020 #define GLOBAL_LOCK_MAX 0xFF
1021 #define HANDLE_TO_INTERN(h) ((PGLOBAL32_INTERN)(((char *)(h))-2))
1022 #define INTERN_TO_HANDLE(i) ((HGLOBAL) &((i)->Pointer))
1023 #define POINTER_TO_HANDLE(p) (*(((HGLOBAL *)(p))-1))
1024 #define ISHANDLE(h) (((DWORD)(h)&2)!=0)
1025 #define ISPOINTER(h) (((DWORD)(h)&2)==0)
1027 typedef struct __GLOBAL32_INTERN
1030 LPVOID Pointer WINE_PACKED
;
1033 } GLOBAL32_INTERN
, *PGLOBAL32_INTERN
;
1036 /***********************************************************************
1037 * GlobalAlloc (KERNEL32.@)
1042 HGLOBAL WINAPI
GlobalAlloc(
1043 UINT flags
, /* [in] Object allocation attributes */
1044 DWORD size
/* [in] Number of bytes to allocate */
1046 PGLOBAL32_INTERN pintern
;
1050 if(flags
&GMEM_ZEROINIT
)
1051 hpflags
=HEAP_ZERO_MEMORY
;
1055 TRACE("() flags=%04x\n", flags
);
1057 if((flags
& GMEM_MOVEABLE
)==0) /* POINTER */
1059 palloc
=HeapAlloc(GetProcessHeap(), hpflags
, size
);
1060 return (HGLOBAL
) palloc
;
1064 /* HeapLock(heap); */
1066 pintern
=HeapAlloc(GetProcessHeap(), 0, sizeof(GLOBAL32_INTERN
));
1067 if (!pintern
) return 0;
1070 if (!(palloc
=HeapAlloc(GetProcessHeap(), hpflags
, size
+sizeof(HGLOBAL
)))) {
1071 HeapFree(GetProcessHeap(), 0, pintern
);
1074 *(HGLOBAL
*)palloc
=INTERN_TO_HANDLE(pintern
);
1075 pintern
->Pointer
=(char *) palloc
+sizeof(HGLOBAL
);
1078 pintern
->Pointer
=NULL
;
1079 pintern
->Magic
=MAGIC_GLOBAL_USED
;
1080 pintern
->Flags
=flags
>>8;
1081 pintern
->LockCount
=0;
1083 /* HeapUnlock(heap); */
1085 return INTERN_TO_HANDLE(pintern
);
1090 /***********************************************************************
1091 * GlobalLock (KERNEL32.@)
1093 * Pointer to first byte of block
1096 LPVOID WINAPI
GlobalLock(
1097 HGLOBAL hmem
/* [in] Handle of global memory object */
1099 PGLOBAL32_INTERN pintern
;
1103 return (LPVOID
) hmem
;
1105 /* HeapLock(GetProcessHeap()); */
1107 pintern
=HANDLE_TO_INTERN(hmem
);
1108 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
1110 if(pintern
->LockCount
<GLOBAL_LOCK_MAX
)
1111 pintern
->LockCount
++;
1112 palloc
=pintern
->Pointer
;
1116 WARN("invalid handle\n");
1117 palloc
=(LPVOID
) NULL
;
1118 SetLastError(ERROR_INVALID_HANDLE
);
1120 /* HeapUnlock(GetProcessHeap()); */;
1125 /***********************************************************************
1126 * GlobalUnlock (KERNEL32.@)
1128 * TRUE: Object is still locked
1129 * FALSE: Object is unlocked
1131 BOOL WINAPI
GlobalUnlock(
1132 HGLOBAL hmem
/* [in] Handle of global memory object */
1134 PGLOBAL32_INTERN pintern
;
1137 if (ISPOINTER(hmem
)) return FALSE
;
1141 /* HeapLock(GetProcessHeap()); */
1142 pintern
=HANDLE_TO_INTERN(hmem
);
1143 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
1145 if((pintern
->LockCount
<GLOBAL_LOCK_MAX
)&&(pintern
->LockCount
>0))
1146 pintern
->LockCount
--;
1148 locked
= (pintern
->LockCount
!= 0);
1149 if (!locked
) SetLastError(NO_ERROR
);
1153 WARN("invalid handle\n");
1154 SetLastError(ERROR_INVALID_HANDLE
);
1157 /* HeapUnlock(GetProcessHeap()); */
1159 __EXCEPT(page_fault
)
1161 ERR("page fault occurred ! Caused by bug ?\n");
1162 SetLastError( ERROR_INVALID_PARAMETER
);
1170 /***********************************************************************
1171 * GlobalHandle (KERNEL32.@)
1172 * Returns the handle associated with the specified pointer.
1178 HGLOBAL WINAPI
GlobalHandle(
1179 LPCVOID pmem
/* [in] Pointer to global memory block */
1182 PGLOBAL32_INTERN maybe_intern
;
1187 SetLastError( ERROR_INVALID_PARAMETER
);
1195 /* note that if pmem is a pointer to a a block allocated by */
1196 /* GlobalAlloc with GMEM_MOVEABLE then magic test in HeapValidate */
1198 if (ISPOINTER(pmem
)) {
1199 if (HeapValidate( GetProcessHeap(), 0, pmem
)) {
1200 handle
= (HGLOBAL
)pmem
; /* valid fixed block */
1203 handle
= POINTER_TO_HANDLE(pmem
);
1205 handle
= (HGLOBAL
)pmem
;
1207 /* Now test handle either passed in or retrieved from pointer */
1208 maybe_intern
= HANDLE_TO_INTERN( handle
);
1209 if (maybe_intern
->Magic
== MAGIC_GLOBAL_USED
) {
1210 test
= maybe_intern
->Pointer
;
1211 if (HeapValidate( GetProcessHeap(), 0, ((HGLOBAL
*)test
)-1 ) && /* obj(-handle) valid arena? */
1212 HeapValidate( GetProcessHeap(), 0, maybe_intern
)) /* intern valid arena? */
1213 break; /* valid moveable block */
1216 SetLastError( ERROR_INVALID_HANDLE
);
1218 __EXCEPT(page_fault
)
1220 SetLastError( ERROR_INVALID_HANDLE
);
1229 /***********************************************************************
1230 * GlobalReAlloc (KERNEL32.@)
1235 HGLOBAL WINAPI
GlobalReAlloc(
1236 HGLOBAL hmem
, /* [in] Handle of global memory object */
1237 DWORD size
, /* [in] New size of block */
1238 UINT flags
/* [in] How to reallocate object */
1242 PGLOBAL32_INTERN pintern
;
1243 DWORD heap_flags
= (flags
& GMEM_ZEROINIT
) ? HEAP_ZERO_MEMORY
: 0;
1246 /* HeapLock(heap); */
1247 if(flags
& GMEM_MODIFY
) /* modify flags */
1249 if( ISPOINTER(hmem
) && (flags
& GMEM_MOVEABLE
))
1251 /* make a fixed block moveable
1252 * actually only NT is able to do this. But it's soo simple
1256 ERR("GlobalReAlloc32 with null handle!\n");
1257 SetLastError( ERROR_NOACCESS
);
1260 size
=HeapSize(GetProcessHeap(), 0, (LPVOID
) hmem
);
1261 hnew
=GlobalAlloc( flags
, size
);
1262 palloc
=GlobalLock(hnew
);
1263 memcpy(palloc
, (LPVOID
) hmem
, size
);
1267 else if( ISPOINTER(hmem
) &&(flags
& GMEM_DISCARDABLE
))
1269 /* change the flags to make our block "discardable" */
1270 pintern
=HANDLE_TO_INTERN(hmem
);
1271 pintern
->Flags
= pintern
->Flags
| (GMEM_DISCARDABLE
>> 8);
1276 SetLastError(ERROR_INVALID_PARAMETER
);
1284 /* reallocate fixed memory */
1285 hnew
=(HGLOBAL
)HeapReAlloc(GetProcessHeap(), heap_flags
, (LPVOID
) hmem
, size
);
1289 /* reallocate a moveable block */
1290 pintern
=HANDLE_TO_INTERN(hmem
);
1293 /* Apparently Windows doesn't care whether the handle is locked at this point */
1294 /* See also the same comment in GlobalFree() */
1295 if(pintern
->LockCount
>1) {
1296 ERR("handle 0x%08lx is still locked, cannot realloc!\n",(DWORD
)hmem
);
1297 SetLastError(ERROR_INVALID_HANDLE
);
1303 if(pintern
->Pointer
)
1305 if((palloc
= HeapReAlloc(GetProcessHeap(), heap_flags
,
1306 (char *) pintern
->Pointer
-sizeof(HGLOBAL
),
1307 size
+sizeof(HGLOBAL
))) == NULL
)
1308 return 0; /* Block still valid */
1309 pintern
->Pointer
=(char *) palloc
+sizeof(HGLOBAL
);
1313 if((palloc
=HeapAlloc(GetProcessHeap(), heap_flags
, size
+sizeof(HGLOBAL
)))
1316 *(HGLOBAL
*)palloc
=hmem
;
1317 pintern
->Pointer
=(char *) palloc
+sizeof(HGLOBAL
);
1322 if(pintern
->Pointer
)
1324 HeapFree(GetProcessHeap(), 0, (char *) pintern
->Pointer
-sizeof(HGLOBAL
));
1325 pintern
->Pointer
=NULL
;
1330 /* HeapUnlock(heap); */
1335 /***********************************************************************
1336 * GlobalFree (KERNEL32.@)
1341 HGLOBAL WINAPI
GlobalFree(
1342 HGLOBAL hmem
/* [in] Handle of global memory object */
1344 PGLOBAL32_INTERN pintern
;
1350 if(ISPOINTER(hmem
)) /* POINTER */
1352 if(!HeapFree(GetProcessHeap(), 0, (LPVOID
) hmem
)) hmem
= 0;
1356 /* HeapLock(heap); */
1357 pintern
=HANDLE_TO_INTERN(hmem
);
1359 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
1362 /* WIN98 does not make this test. That is you can free a */
1363 /* block you have not unlocked. Go figure!! */
1364 /* if(pintern->LockCount!=0) */
1365 /* SetLastError(ERROR_INVALID_HANDLE); */
1367 if(pintern
->Pointer
)
1368 if(!HeapFree(GetProcessHeap(), 0, (char *)(pintern
->Pointer
)-sizeof(HGLOBAL
)))
1370 if(!HeapFree(GetProcessHeap(), 0, pintern
))
1373 /* HeapUnlock(heap); */
1376 __EXCEPT(page_fault
)
1378 ERR("page fault occurred ! Caused by bug ?\n");
1379 SetLastError( ERROR_INVALID_PARAMETER
);
1387 /***********************************************************************
1388 * GlobalSize (KERNEL32.@)
1390 * Size in bytes of the global memory object
1393 DWORD WINAPI
GlobalSize(
1394 HGLOBAL hmem
/* [in] Handle of global memory object */
1397 PGLOBAL32_INTERN pintern
;
1401 retval
=HeapSize(GetProcessHeap(), 0, (LPVOID
) hmem
);
1405 /* HeapLock(heap); */
1406 pintern
=HANDLE_TO_INTERN(hmem
);
1408 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
1410 if (!pintern
->Pointer
) /* handle case of GlobalAlloc( ??,0) */
1412 retval
=HeapSize(GetProcessHeap(), 0,
1413 (char *)(pintern
->Pointer
)-sizeof(HGLOBAL
))-4;
1414 if (retval
== 0xffffffff-4) retval
= 0;
1418 WARN("invalid handle\n");
1421 /* HeapUnlock(heap); */
1423 /* HeapSize returns 0xffffffff on failure */
1424 if (retval
== 0xffffffff) retval
= 0;
1429 /***********************************************************************
1430 * GlobalWire (KERNEL32.@)
1432 LPVOID WINAPI
GlobalWire(HGLOBAL hmem
)
1434 return GlobalLock( hmem
);
1438 /***********************************************************************
1439 * GlobalUnWire (KERNEL32.@)
1441 BOOL WINAPI
GlobalUnWire(HGLOBAL hmem
)
1443 return GlobalUnlock( hmem
);
1447 /***********************************************************************
1448 * GlobalFix (KERNEL32.@)
1450 VOID WINAPI
GlobalFix(HGLOBAL hmem
)
1456 /***********************************************************************
1457 * GlobalUnfix (KERNEL32.@)
1459 VOID WINAPI
GlobalUnfix(HGLOBAL hmem
)
1461 GlobalUnlock( hmem
);
1465 /***********************************************************************
1466 * GlobalFlags (KERNEL32.@)
1467 * Returns information about the specified global memory object
1470 * Should this return GMEM_INVALID_HANDLE on invalid handle?
1473 * Value specifying allocation flags and lock count
1474 * GMEM_INVALID_HANDLE: Failure
1476 UINT WINAPI
GlobalFlags(
1477 HGLOBAL hmem
/* [in] Handle to global memory object */
1480 PGLOBAL32_INTERN pintern
;
1488 /* HeapLock(GetProcessHeap()); */
1489 pintern
=HANDLE_TO_INTERN(hmem
);
1490 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
1492 retval
=pintern
->LockCount
+ (pintern
->Flags
<<8);
1493 if(pintern
->Pointer
==0)
1494 retval
|= GMEM_DISCARDED
;
1498 WARN("Invalid handle: %04x\n", hmem
);
1501 /* HeapUnlock(GetProcessHeap()); */
1507 /***********************************************************************
1508 * GlobalCompact (KERNEL32.@)
1510 DWORD WINAPI
GlobalCompact( DWORD minfree
)
1512 return 0; /* GlobalCompact does nothing in Win32 */
1516 /***********************************************************************
1517 * GlobalMemoryStatus (KERNEL32.@)
1521 VOID WINAPI
GlobalMemoryStatus(
1522 LPMEMORYSTATUS lpmem
1524 static MEMORYSTATUS cached_memstatus
;
1525 static int cache_lastchecked
= 0;
1534 if (time(NULL
)==cache_lastchecked
) {
1535 memcpy(lpmem
,&cached_memstatus
,sizeof(MEMORYSTATUS
));
1538 cache_lastchecked
= time(NULL
);
1540 lpmem
->dwMemoryLoad
= 0;
1541 lpmem
->dwTotalPhys
= 16*1024*1024;
1542 lpmem
->dwAvailPhys
= 16*1024*1024;
1543 lpmem
->dwTotalPageFile
= 16*1024*1024;
1544 lpmem
->dwAvailPageFile
= 16*1024*1024;
1547 f
= fopen( "/proc/meminfo", "r" );
1551 int total
, used
, free
, shared
, buffers
, cached
;
1553 lpmem
->dwLength
= sizeof(MEMORYSTATUS
);
1554 lpmem
->dwTotalPhys
= lpmem
->dwAvailPhys
= 0;
1555 lpmem
->dwTotalPageFile
= lpmem
->dwAvailPageFile
= 0;
1556 while (fgets( buffer
, sizeof(buffer
), f
))
1558 /* old style /proc/meminfo ... */
1559 if (sscanf( buffer
, "Mem: %d %d %d %d %d %d", &total
, &used
, &free
, &shared
, &buffers
, &cached
))
1561 lpmem
->dwTotalPhys
+= total
;
1562 lpmem
->dwAvailPhys
+= free
+ buffers
+ cached
;
1564 if (sscanf( buffer
, "Swap: %d %d %d", &total
, &used
, &free
))
1566 lpmem
->dwTotalPageFile
+= total
;
1567 lpmem
->dwAvailPageFile
+= free
;
1570 /* new style /proc/meminfo ... */
1571 if (sscanf(buffer
, "MemTotal: %d", &total
))
1572 lpmem
->dwTotalPhys
= total
*1024;
1573 if (sscanf(buffer
, "MemFree: %d", &free
))
1574 lpmem
->dwAvailPhys
= free
*1024;
1575 if (sscanf(buffer
, "SwapTotal: %d", &total
))
1576 lpmem
->dwTotalPageFile
= total
*1024;
1577 if (sscanf(buffer
, "SwapFree: %d", &free
))
1578 lpmem
->dwAvailPageFile
= free
*1024;
1579 if (sscanf(buffer
, "Buffers: %d", &buffers
))
1580 lpmem
->dwAvailPhys
+= buffers
*1024;
1581 if (sscanf(buffer
, "Cached: %d", &cached
))
1582 lpmem
->dwAvailPhys
+= cached
*1024;
1586 if (lpmem
->dwTotalPhys
)
1588 DWORD TotalPhysical
= lpmem
->dwTotalPhys
+lpmem
->dwTotalPageFile
;
1589 DWORD AvailPhysical
= lpmem
->dwAvailPhys
+lpmem
->dwAvailPageFile
;
1590 lpmem
->dwMemoryLoad
= (TotalPhysical
-AvailPhysical
)
1591 / (TotalPhysical
/ 100);
1594 #elif defined(__FreeBSD__)
1595 sysctlbyname("hw.physmem", NULL
, &size_sys
, NULL
, 0);
1596 tmp
= malloc(size_sys
* sizeof(int));
1597 sysctlbyname("hw.physmem", tmp
, &size_sys
, NULL
, 0);
1600 lpmem
->dwTotalPhys
= *tmp
;
1602 sysctlbyname("hw.usermem", NULL
, &size_sys
, NULL
, 0);
1603 tmp
= malloc(size_sys
* sizeof(int));
1604 sysctlbyname("hw.usermem", tmp
, &size_sys
, NULL
, 0);
1607 lpmem
->dwAvailPhys
= *tmp
;
1608 lpmem
->dwTotalPageFile
= *tmp
;
1609 lpmem
->dwAvailPageFile
= *tmp
;
1610 lpmem
->dwMemoryLoad
= lpmem
->dwTotalPhys
- lpmem
->dwAvailPhys
;
1613 lpmem
->dwAvailPhys
= lpmem
->dwTotalPhys
;
1614 lpmem
->dwTotalPageFile
= lpmem
->dwTotalPhys
;
1615 lpmem
->dwAvailPageFile
= lpmem
->dwTotalPhys
;
1616 lpmem
->dwMemoryLoad
= 0;
1622 /* FIXME: should do something for other systems */
1624 lpmem
->dwTotalVirtual
= si
.lpMaximumApplicationAddress
-si
.lpMinimumApplicationAddress
;
1625 /* FIXME: we should track down all the already allocated VM pages and substract them, for now arbitrarily remove 64KB so that it matches NT */
1626 lpmem
->dwAvailVirtual
= lpmem
->dwTotalVirtual
-64*1024;
1627 memcpy(&cached_memstatus
,lpmem
,sizeof(MEMORYSTATUS
));
1629 /* it appears some memory display programs want to divide by these values */
1630 if(lpmem
->dwTotalPageFile
==0)
1631 lpmem
->dwTotalPageFile
++;
1633 if(lpmem
->dwAvailPageFile
==0)
1634 lpmem
->dwAvailPageFile
++;
1636 TRACE("<-- LPMEMORYSTATUS: dwLength %ld, dwMemoryLoad %ld, dwTotalPhys %ld, dwAvailPhys %ld,"
1637 " dwTotalPageFile %ld, dwAvailPageFile %ld, dwTotalVirtual %ld, dwAvailVirtual %ld\n",
1638 lpmem
->dwLength
, lpmem
->dwMemoryLoad
, lpmem
->dwTotalPhys
, lpmem
->dwAvailPhys
,
1639 lpmem
->dwTotalPageFile
, lpmem
->dwAvailPageFile
, lpmem
->dwTotalVirtual
,
1640 lpmem
->dwAvailVirtual
);
1643 /***********************************************************************
1644 * A20Proc (KERNEL.165)
1645 * A20_Proc (SYSTEM.20)
1647 void WINAPI
A20Proc16( WORD unused
)
1649 /* this is also a NOP in Windows */
1652 /***********************************************************************
1653 * LimitEMSPages (KERNEL.156)
1655 DWORD WINAPI
LimitEMSPages16( DWORD unused
)