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>
33 #ifdef HAVE_SYS_PARAM_H
34 #include <sys/param.h>
36 #ifdef HAVE_SYS_SYSCTL_H
37 #include <sys/sysctl.h>
40 #include "wine/winbase16.h"
41 #include "wine/exception.h"
44 #include "selectors.h"
46 #include "stackframe.h"
47 #include "wine/debug.h"
51 WINE_DEFAULT_DEBUG_CHANNEL(global
);
53 /* Global arena block */
56 DWORD base
; /* Base address (0 if discarded) */
57 DWORD size
; /* Size in bytes (0 indicates a free block) */
58 HGLOBAL16 handle
; /* Handle for this block */
59 HGLOBAL16 hOwner
; /* Owner of this block */
60 BYTE lockCount
; /* Count of GlobalFix() calls */
61 BYTE pageLockCount
; /* Count of GlobalPageLock() calls */
62 BYTE flags
; /* Allocation flags */
63 BYTE selCount
; /* Number of selectors allocated for this block */
66 /* Flags definitions */
67 #define GA_MOVEABLE 0x02 /* same as GMEM_MOVEABLE */
68 #define GA_DGROUP 0x04
69 #define GA_DISCARDABLE 0x08
70 #define GA_IPCSHARE 0x10 /* same as GMEM_DDESHARE */
71 #define GA_DOSMEM 0x20
74 static GLOBALARENA
*pGlobalArena
= NULL
;
75 static int globalArenaSize
= 0;
77 #define GLOBAL_MAX_ALLOC_SIZE 0x00ff0000 /* Largest allocation is 16M - 64K */
79 #define VALID_HANDLE(handle) (((handle)>>__AHSHIFT)<globalArenaSize)
80 #define GET_ARENA_PTR(handle) (pGlobalArena + ((handle) >> __AHSHIFT))
82 /* filter for page-fault exceptions */
83 /* It is possible for a bogus global pointer to cause a */
84 /* page zero reference, so I include EXCEPTION_PRIV_INSTRUCTION too. */
86 static WINE_EXCEPTION_FILTER(page_fault
)
88 switch (GetExceptionCode()) {
89 case (EXCEPTION_ACCESS_VIOLATION
):
90 case (EXCEPTION_PRIV_INSTRUCTION
):
91 return EXCEPTION_EXECUTE_HANDLER
;
93 return EXCEPTION_CONTINUE_SEARCH
;
97 /***********************************************************************
100 * Return the arena for a given selector, growing the arena array if needed.
102 static GLOBALARENA
*GLOBAL_GetArena( WORD sel
, WORD selcount
)
104 if (((sel
>> __AHSHIFT
) + selcount
) > globalArenaSize
)
106 int newsize
= ((sel
>> __AHSHIFT
) + selcount
+ 0xff) & ~0xff;
107 GLOBALARENA
*pNewArena
= realloc( pGlobalArena
,
108 newsize
* sizeof(GLOBALARENA
) );
109 if (!pNewArena
) return 0;
110 pGlobalArena
= pNewArena
;
111 memset( pGlobalArena
+ globalArenaSize
, 0,
112 (newsize
- globalArenaSize
) * sizeof(GLOBALARENA
) );
113 globalArenaSize
= newsize
;
115 return pGlobalArena
+ (sel
>> __AHSHIFT
);
118 void debug_handles(void)
122 for (i
= globalArenaSize
-1 ; i
>=0 ; i
--) {
123 if (pGlobalArena
[i
].size
!=0 && (pGlobalArena
[i
].handle
& 0x8000)){
125 DPRINTF("0x%08x, ",pGlobalArena
[i
].handle
);
133 /***********************************************************************
136 * Create a global heap block for a fixed range of linear memory.
138 HGLOBAL16
GLOBAL_CreateBlock( WORD flags
, const void *ptr
, DWORD size
,
139 HGLOBAL16 hOwner
, unsigned char selflags
)
144 /* Allocate the selector(s) */
146 sel
= SELECTOR_AllocBlock( ptr
, size
, selflags
);
148 selcount
= (size
+ 0xffff) / 0x10000;
150 if (!(pArena
= GLOBAL_GetArena( sel
, selcount
)))
152 SELECTOR_FreeBlock( sel
);
156 /* Fill the arena block */
158 pArena
->base
= (DWORD
)ptr
;
159 pArena
->size
= GetSelectorLimit16(sel
) + 1;
160 pArena
->handle
= (flags
& GMEM_MOVEABLE
) ? sel
- 1 : sel
;
161 pArena
->hOwner
= hOwner
;
162 pArena
->lockCount
= 0;
163 pArena
->pageLockCount
= 0;
164 pArena
->flags
= flags
& GA_MOVEABLE
;
165 if (flags
& GMEM_DISCARDABLE
) pArena
->flags
|= GA_DISCARDABLE
;
166 if (flags
& GMEM_DDESHARE
) pArena
->flags
|= GA_IPCSHARE
;
167 if (!(selflags
& (WINE_LDT_FLAGS_CODE
^WINE_LDT_FLAGS_DATA
))) pArena
->flags
|= GA_DGROUP
;
168 pArena
->selCount
= selcount
;
169 if (selcount
> 1) /* clear the next arena blocks */
170 memset( pArena
+ 1, 0, (selcount
- 1) * sizeof(GLOBALARENA
) );
172 return pArena
->handle
;
176 /***********************************************************************
179 * Free a block allocated by GLOBAL_CreateBlock, without touching
180 * the associated linear memory range.
182 BOOL16
GLOBAL_FreeBlock( HGLOBAL16 handle
)
187 if (!handle
) return TRUE
;
188 sel
= GlobalHandleToSel16( handle
);
189 if (!VALID_HANDLE(sel
))
191 pArena
= GET_ARENA_PTR(sel
);
192 SELECTOR_FreeBlock( sel
);
193 memset( pArena
, 0, sizeof(GLOBALARENA
) );
197 /***********************************************************************
200 BOOL16
GLOBAL_MoveBlock( HGLOBAL16 handle
, const void *ptr
, DWORD size
)
205 if (!handle
) return TRUE
;
206 sel
= GlobalHandleToSel16( handle
);
207 if (!VALID_HANDLE(sel
))
209 pArena
= GET_ARENA_PTR(sel
);
210 if (pArena
->selCount
!= 1)
213 pArena
->base
= (DWORD
)ptr
;
215 SELECTOR_ReallocBlock( sel
, ptr
, size
);
219 /***********************************************************************
222 * Implementation of GlobalAlloc16()
224 HGLOBAL16
GLOBAL_Alloc( UINT16 flags
, DWORD size
, HGLOBAL16 hOwner
, unsigned char selflags
)
229 TRACE("%ld flags=%04x\n", size
, flags
);
231 /* If size is 0, create a discarded block */
233 if (size
== 0) return GLOBAL_CreateBlock( flags
, NULL
, 1, hOwner
, selflags
);
237 if (size
>= GLOBAL_MAX_ALLOC_SIZE
- 0x1f) return 0;
238 size
= (size
+ 0x1f) & ~0x1f;
240 /* Allocate the linear memory */
241 ptr
= HeapAlloc( GetProcessHeap(), 0, size
);
242 /* FIXME: free discardable blocks and try again? */
245 /* Allocate the selector(s) */
247 handle
= GLOBAL_CreateBlock( flags
, ptr
, size
, hOwner
, selflags
);
250 HeapFree( GetProcessHeap(), 0, ptr
);
254 if (flags
& GMEM_ZEROINIT
) memset( ptr
, 0, size
);
258 /***********************************************************************
259 * GlobalAlloc (KERNEL.15)
260 * GlobalAlloc16 (KERNEL32.24)
265 HGLOBAL16 WINAPI
GlobalAlloc16(
266 UINT16 flags
, /* [in] Object allocation attributes */
267 DWORD size
/* [in] Number of bytes to allocate */
269 HANDLE16 owner
= GetCurrentPDB16();
271 if (flags
& GMEM_DDESHARE
)
272 owner
= GetExePtr(owner
); /* Make it a module handle */
273 return GLOBAL_Alloc( flags
, size
, owner
, WINE_LDT_FLAGS_DATA
);
277 /***********************************************************************
278 * GlobalReAlloc (KERNEL.16)
283 HGLOBAL16 WINAPI
GlobalReAlloc16(
284 HGLOBAL16 handle
, /* [in] Handle of global memory object */
285 DWORD size
, /* [in] New size of block */
286 UINT16 flags
/* [in] How to reallocate object */
291 GLOBALARENA
*pArena
, *pNewArena
;
292 WORD sel
= GlobalHandleToSel16( handle
);
294 TRACE("%04x %ld flags=%04x\n",
295 handle
, size
, flags
);
296 if (!handle
) return 0;
298 if (!VALID_HANDLE(handle
)) {
299 WARN("Invalid handle 0x%04x!\n", handle
);
302 pArena
= GET_ARENA_PTR( handle
);
304 /* Discard the block if requested */
306 if ((size
== 0) && (flags
& GMEM_MOVEABLE
) && !(flags
& GMEM_MODIFY
))
308 if (!(pArena
->flags
& GA_MOVEABLE
) ||
309 !(pArena
->flags
& GA_DISCARDABLE
) ||
310 (pArena
->lockCount
> 0) || (pArena
->pageLockCount
> 0)) return 0;
311 HeapFree( GetProcessHeap(), 0, (void *)pArena
->base
);
314 /* Note: we rely on the fact that SELECTOR_ReallocBlock won't
315 * change the selector if we are shrinking the block.
316 * FIXME: shouldn't we keep selectors until the block is deleted?
318 SELECTOR_ReallocBlock( sel
, 0, 1 );
324 if (size
> GLOBAL_MAX_ALLOC_SIZE
- 0x20) return 0;
325 if (size
== 0) size
= 0x20;
326 else size
= (size
+ 0x1f) & ~0x1f;
328 /* Change the flags */
330 if (flags
& GMEM_MODIFY
)
332 /* Change the flags, leaving GA_DGROUP alone */
333 pArena
->flags
= (pArena
->flags
& GA_DGROUP
) | (flags
& GA_MOVEABLE
);
334 if (flags
& GMEM_DISCARDABLE
) pArena
->flags
|= GA_DISCARDABLE
;
338 /* Reallocate the linear memory */
340 ptr
= (void *)pArena
->base
;
341 oldsize
= pArena
->size
;
342 TRACE("oldbase %p oldsize %08lx newsize %08lx\n", ptr
,oldsize
,size
);
343 if (ptr
&& (size
== oldsize
)) return handle
; /* Nothing to do */
345 if (pArena
->flags
& GA_DOSMEM
)
346 newptr
= DOSMEM_ResizeBlock(ptr
, size
, NULL
);
348 /* if more then one reader (e.g. some pointer has been given out by GetVDMPointer32W16),
349 only try to realloc in place */
350 newptr
= HeapReAlloc( GetProcessHeap(),
351 (pArena
->pageLockCount
> 0)?HEAP_REALLOC_IN_PLACE_ONLY
:0, ptr
, size
);
354 FIXME("Realloc failed lock %d\n",pArena
->pageLockCount
);
355 if (pArena
->pageLockCount
<1)
357 HeapFree( GetProcessHeap(), 0, ptr
);
358 SELECTOR_FreeBlock( sel
);
359 memset( pArena
, 0, sizeof(GLOBALARENA
) );
365 /* Reallocate the selector(s) */
367 sel
= SELECTOR_ReallocBlock( sel
, ptr
, size
);
370 HeapFree( GetProcessHeap(), 0, ptr
);
371 memset( pArena
, 0, sizeof(GLOBALARENA
) );
374 selcount
= (size
+ 0xffff) / 0x10000;
376 if (!(pNewArena
= GLOBAL_GetArena( sel
, selcount
)))
378 HeapFree( GetProcessHeap(), 0, ptr
);
379 SELECTOR_FreeBlock( sel
);
383 /* Fill the new arena block
384 As we may have used HEAP_REALLOC_IN_PLACE_ONLY, areas may overlap*/
386 if (pNewArena
!= pArena
) memmove( pNewArena
, pArena
, sizeof(GLOBALARENA
) );
387 pNewArena
->base
= (DWORD
)ptr
;
388 pNewArena
->size
= GetSelectorLimit16(sel
) + 1;
389 pNewArena
->selCount
= selcount
;
390 pNewArena
->handle
= (pNewArena
->flags
& GA_MOVEABLE
) ? sel
- 1 : sel
;
392 if (selcount
> 1) /* clear the next arena blocks */
393 memset( pNewArena
+ 1, 0, (selcount
- 1) * sizeof(GLOBALARENA
) );
395 if ((oldsize
< size
) && (flags
& GMEM_ZEROINIT
))
396 memset( (char *)ptr
+ oldsize
, 0, size
- oldsize
);
397 return pNewArena
->handle
;
401 /***********************************************************************
402 * GlobalFree (KERNEL.17)
403 * GlobalFree16 (KERNEL32.31)
408 HGLOBAL16 WINAPI
GlobalFree16(
409 HGLOBAL16 handle
/* [in] Handle of global memory object */
413 if (!VALID_HANDLE(handle
)) {
414 WARN("Invalid handle 0x%04x passed to GlobalFree16!\n",handle
);
417 ptr
= (void *)GET_ARENA_PTR(handle
)->base
;
419 TRACE("%04x\n", handle
);
420 if (!GLOBAL_FreeBlock( handle
)) return handle
; /* failed */
421 if (ptr
) HeapFree( GetProcessHeap(), 0, ptr
);
426 /***********************************************************************
427 * GlobalLock (KERNEL.18)
429 * This is the GlobalLock16() function used by 16-bit code.
431 SEGPTR WINAPI
WIN16_GlobalLock16( HGLOBAL16 handle
)
433 WORD sel
= GlobalHandleToSel16( handle
);
434 TRACE("(%04x) -> %08lx\n", handle
, MAKELONG( 0, sel
) );
438 if (handle
== (HGLOBAL16
)-1) handle
= CURRENT_DS
;
440 if (!VALID_HANDLE(handle
)) {
441 WARN("Invalid handle 0x%04x passed to WIN16_GlobalLock16!\n",handle
);
444 else if (!GET_ARENA_PTR(handle
)->base
)
447 GET_ARENA_PTR(handle
)->lockCount
++;
450 CURRENT_STACK16
->ecx
= sel
; /* selector must be returned in CX as well */
451 return MAKESEGPTR( sel
, 0 );
455 /**********************************************************************
456 * K32WOWGlobalLock16 (KERNEL32.60)
458 SEGPTR WINAPI
K32WOWGlobalLock16( HGLOBAL16 hMem
)
460 return WIN16_GlobalLock16( hMem
);
464 /***********************************************************************
465 * GlobalLock16 (KERNEL32.25)
467 * This is the GlobalLock16() function used by 32-bit code.
470 * Pointer to first byte of memory block
473 LPVOID WINAPI
GlobalLock16(
474 HGLOBAL16 handle
/* [in] Handle of global memory object */
476 if (!handle
) return 0;
477 if (!VALID_HANDLE(handle
))
479 GET_ARENA_PTR(handle
)->lockCount
++;
480 return (LPVOID
)GET_ARENA_PTR(handle
)->base
;
484 /***********************************************************************
485 * GlobalUnlock (KERNEL.19)
486 * GlobalUnlock16 (KERNEL32.26)
488 * Should the return values be cast to booleans?
491 * TRUE: Object is still locked
492 * FALSE: Object is unlocked
494 BOOL16 WINAPI
GlobalUnlock16(
495 HGLOBAL16 handle
/* [in] Handle of global memory object */
497 GLOBALARENA
*pArena
= GET_ARENA_PTR(handle
);
498 if (!VALID_HANDLE(handle
)) {
499 WARN("Invalid handle 0x%04x passed to GlobalUnlock16!\n",handle
);
502 TRACE("%04x\n", handle
);
503 if (pArena
->lockCount
) pArena
->lockCount
--;
504 return pArena
->lockCount
;
507 /***********************************************************************
508 * GlobalChangeLockCount (KERNEL.365)
510 * This is declared as a register function as it has to preserve
511 * *all* registers, even AX/DX !
514 void WINAPI
GlobalChangeLockCount16( HGLOBAL16 handle
, INT16 delta
,
518 GlobalLock16( handle
);
519 else if ( delta
== -1 )
520 GlobalUnlock16( handle
);
522 ERR("(%04X, %d): strange delta value\n", handle
, delta
);
525 /***********************************************************************
526 * GlobalSize (KERNEL.20)
527 * GlobalSize16 (KERNEL32.32)
529 * Size in bytes of object
532 DWORD WINAPI
GlobalSize16(
533 HGLOBAL16 handle
/* [in] Handle of global memory object */
535 TRACE("%04x\n", handle
);
536 if (!handle
) return 0;
537 if (!VALID_HANDLE(handle
))
539 return GET_ARENA_PTR(handle
)->size
;
543 /***********************************************************************
544 * GlobalHandle (KERNEL.21)
546 * Why is GlobalHandleToSel used here with the sel as input?
552 DWORD WINAPI
GlobalHandle16(
553 WORD sel
/* [in] Address of global memory block */
555 TRACE("%04x\n", sel
);
556 if (!VALID_HANDLE(sel
)) {
557 WARN("Invalid handle 0x%04x passed to GlobalHandle16!\n",sel
);
560 return MAKELONG( GET_ARENA_PTR(sel
)->handle
, GlobalHandleToSel16(sel
) );
563 /***********************************************************************
564 * GlobalHandleNoRIP (KERNEL.159)
566 DWORD WINAPI
GlobalHandleNoRIP16( WORD sel
)
569 for (i
= globalArenaSize
-1 ; i
>=0 ; i
--) {
570 if (pGlobalArena
[i
].size
!=0 && pGlobalArena
[i
].handle
== sel
)
571 return MAKELONG( GET_ARENA_PTR(sel
)->handle
, GlobalHandleToSel16(sel
) );
577 /***********************************************************************
578 * GlobalFlags (KERNEL.22)
581 * Should this return GMEM_INVALID_HANDLE instead of 0 on invalid
585 * Value specifying flags and lock count
586 * GMEM_INVALID_HANDLE: Invalid handle
588 UINT16 WINAPI
GlobalFlags16(
589 HGLOBAL16 handle
/* [in] Handle of global memory object */
593 TRACE("%04x\n", handle
);
594 if (!VALID_HANDLE(handle
)) {
595 WARN("Invalid handle 0x%04x passed to GlobalFlags16!\n",handle
);
598 pArena
= GET_ARENA_PTR(handle
);
599 return pArena
->lockCount
|
600 ((pArena
->flags
& GA_DISCARDABLE
) ? GMEM_DISCARDABLE
: 0) |
601 ((pArena
->base
== 0) ? GMEM_DISCARDED
: 0);
605 /***********************************************************************
606 * LockSegment (KERNEL.23)
608 HGLOBAL16 WINAPI
LockSegment16( HGLOBAL16 handle
)
610 TRACE("%04x\n", handle
);
611 if (handle
== (HGLOBAL16
)-1) handle
= CURRENT_DS
;
612 if (!VALID_HANDLE(handle
)) {
613 WARN("Invalid handle 0x%04x passed to LockSegment16!\n",handle
);
616 GET_ARENA_PTR(handle
)->lockCount
++;
621 /***********************************************************************
622 * UnlockSegment (KERNEL.24)
624 void WINAPI
UnlockSegment16( HGLOBAL16 handle
)
626 TRACE("%04x\n", handle
);
627 if (handle
== (HGLOBAL16
)-1) handle
= CURRENT_DS
;
628 if (!VALID_HANDLE(handle
)) {
629 WARN("Invalid handle 0x%04x passed to UnlockSegment16!\n",handle
);
632 GET_ARENA_PTR(handle
)->lockCount
--;
633 /* FIXME: this ought to return the lock count in CX (go figure...) */
637 /***********************************************************************
638 * GlobalCompact (KERNEL.25)
640 DWORD WINAPI
GlobalCompact16( DWORD desired
)
642 return GLOBAL_MAX_ALLOC_SIZE
;
646 /***********************************************************************
647 * GlobalFreeAll (KERNEL.26)
649 void WINAPI
GlobalFreeAll16( HGLOBAL16 owner
)
654 pArena
= pGlobalArena
;
655 for (i
= 0; i
< globalArenaSize
; i
++, pArena
++)
657 if ((pArena
->size
!= 0) && (pArena
->hOwner
== owner
))
658 GlobalFree16( pArena
->handle
);
663 /***********************************************************************
664 * GlobalWire (KERNEL.111)
665 * GlobalWire16 (KERNEL32.29)
667 SEGPTR WINAPI
GlobalWire16( HGLOBAL16 handle
)
669 return WIN16_GlobalLock16( handle
);
673 /***********************************************************************
674 * GlobalUnWire (KERNEL.112)
675 * GlobalUnWire16 (KERNEL32.30)
677 BOOL16 WINAPI
GlobalUnWire16( HGLOBAL16 handle
)
679 return !GlobalUnlock16( handle
);
683 /***********************************************************************
684 * SetSwapAreaSize (KERNEL.106)
686 LONG WINAPI
SetSwapAreaSize16( WORD size
)
688 FIXME("(%d) - stub!\n", size
);
689 return MAKELONG( size
, 0xffff );
693 /***********************************************************************
694 * GlobalLRUOldest (KERNEL.163)
696 HGLOBAL16 WINAPI
GlobalLRUOldest16( HGLOBAL16 handle
)
698 TRACE("%04x\n", handle
);
699 if (handle
== (HGLOBAL16
)-1) handle
= CURRENT_DS
;
704 /***********************************************************************
705 * GlobalLRUNewest (KERNEL.164)
707 HGLOBAL16 WINAPI
GlobalLRUNewest16( HGLOBAL16 handle
)
709 TRACE("%04x\n", handle
);
710 if (handle
== (HGLOBAL16
)-1) handle
= CURRENT_DS
;
715 /***********************************************************************
716 * GetFreeSpace (KERNEL.169)
718 DWORD WINAPI
GetFreeSpace16( UINT16 wFlags
)
721 GlobalMemoryStatus( &ms
);
722 return ms
.dwAvailVirtual
;
725 /***********************************************************************
726 * GlobalDOSAlloc (KERNEL.184)
728 * Address (HW=Paragraph segment; LW=Selector)
730 DWORD WINAPI
GlobalDOSAlloc16(
731 DWORD size
/* [in] Number of bytes to be allocated */
734 LPVOID lpBlock
= DOSMEM_GetBlock( size
, &uParagraph
);
738 HMODULE16 hModule
= GetModuleHandle16("KERNEL");
742 wSelector
= GLOBAL_CreateBlock(GMEM_FIXED
, lpBlock
, size
, hModule
, WINE_LDT_FLAGS_DATA
);
743 pArena
= GET_ARENA_PTR(wSelector
);
744 pArena
->flags
|= GA_DOSMEM
;
745 return MAKELONG(wSelector
,uParagraph
);
751 /***********************************************************************
752 * GlobalDOSFree (KERNEL.185)
757 WORD WINAPI
GlobalDOSFree16(
758 WORD sel
/* [in] Selector */
760 DWORD block
= GetSelectorBase(sel
);
762 if( block
&& block
< 0x100000 )
764 LPVOID lpBlock
= DOSMEM_MapDosToLinear( block
);
765 if( DOSMEM_FreeBlock( lpBlock
) )
766 GLOBAL_FreeBlock( sel
);
773 /***********************************************************************
774 * GlobalPageLock (KERNEL.191)
775 * GlobalSmartPageLock(KERNEL.230)
777 WORD WINAPI
GlobalPageLock16( HGLOBAL16 handle
)
779 TRACE("%04x\n", handle
);
780 if (!VALID_HANDLE(handle
)) {
781 WARN("Invalid handle 0x%04x passed to GlobalPageLock!\n",handle
);
784 return ++(GET_ARENA_PTR(handle
)->pageLockCount
);
788 /***********************************************************************
789 * GlobalPageUnlock (KERNEL.192)
790 * GlobalSmartPageUnlock(KERNEL.231)
792 WORD WINAPI
GlobalPageUnlock16( HGLOBAL16 handle
)
794 TRACE("%04x\n", handle
);
795 if (!VALID_HANDLE(handle
)) {
796 WARN("Invalid handle 0x%04x passed to GlobalPageUnlock!\n",handle
);
799 return --(GET_ARENA_PTR(handle
)->pageLockCount
);
803 /***********************************************************************
804 * GlobalFix (KERNEL.197)
805 * GlobalFix16 (KERNEL32.27)
807 WORD WINAPI
GlobalFix16( HGLOBAL16 handle
)
809 TRACE("%04x\n", handle
);
810 if (!VALID_HANDLE(handle
)) {
811 WARN("Invalid handle 0x%04x passed to GlobalFix16!\n",handle
);
814 GET_ARENA_PTR(handle
)->lockCount
++;
816 return GlobalHandleToSel16(handle
);
820 /***********************************************************************
821 * GlobalUnfix (KERNEL.198)
822 * GlobalUnfix16 (KERNEL32.28)
824 void WINAPI
GlobalUnfix16( HGLOBAL16 handle
)
826 TRACE("%04x\n", handle
);
827 if (!VALID_HANDLE(handle
)) {
828 WARN("Invalid handle 0x%04x passed to GlobalUnfix16!\n",handle
);
831 GET_ARENA_PTR(handle
)->lockCount
--;
835 /***********************************************************************
836 * FarSetOwner (KERNEL.403)
838 void WINAPI
FarSetOwner16( HGLOBAL16 handle
, HANDLE16 hOwner
)
840 if (!VALID_HANDLE(handle
)) {
841 WARN("Invalid handle 0x%04x passed to FarSetOwner!\n",handle
);
844 GET_ARENA_PTR(handle
)->hOwner
= hOwner
;
848 /***********************************************************************
849 * FarGetOwner (KERNEL.404)
851 HANDLE16 WINAPI
FarGetOwner16( HGLOBAL16 handle
)
853 if (!VALID_HANDLE(handle
)) {
854 WARN("Invalid handle 0x%04x passed to FarGetOwner!\n",handle
);
857 return GET_ARENA_PTR(handle
)->hOwner
;
861 /***********************************************************************
862 * GlobalHandleToSel (TOOLHELP.50)
864 WORD WINAPI
GlobalHandleToSel16( HGLOBAL16 handle
)
866 if (!handle
) return 0;
867 if (!VALID_HANDLE(handle
)) {
868 WARN("Invalid handle 0x%04x passed to GlobalHandleToSel!\n",handle
);
873 WARN("Program attempted invalid selector conversion\n" );
880 /***********************************************************************
881 * GlobalFirst (TOOLHELP.51)
883 BOOL16 WINAPI
GlobalFirst16( GLOBALENTRY
*pGlobal
, WORD wFlags
)
885 if (wFlags
== GLOBAL_LRU
) return FALSE
;
887 return GlobalNext16( pGlobal
, wFlags
);
891 /***********************************************************************
892 * GlobalNext (TOOLHELP.52)
894 BOOL16 WINAPI
GlobalNext16( GLOBALENTRY
*pGlobal
, WORD wFlags
)
898 if (pGlobal
->dwNext
>= globalArenaSize
) return FALSE
;
899 pArena
= pGlobalArena
+ pGlobal
->dwNext
;
900 if (wFlags
== GLOBAL_FREE
) /* only free blocks */
903 for (i
= pGlobal
->dwNext
; i
< globalArenaSize
; i
++, pArena
++)
904 if (pArena
->size
== 0) break; /* block is free */
905 if (i
>= globalArenaSize
) return FALSE
;
909 pGlobal
->dwAddress
= pArena
->base
;
910 pGlobal
->dwBlockSize
= pArena
->size
;
911 pGlobal
->hBlock
= pArena
->handle
;
912 pGlobal
->wcLock
= pArena
->lockCount
;
913 pGlobal
->wcPageLock
= pArena
->pageLockCount
;
914 pGlobal
->wFlags
= (GetCurrentPDB16() == pArena
->hOwner
);
915 pGlobal
->wHeapPresent
= FALSE
;
916 pGlobal
->hOwner
= pArena
->hOwner
;
917 pGlobal
->wType
= GT_UNKNOWN
;
924 /***********************************************************************
925 * GlobalInfo (TOOLHELP.53)
927 BOOL16 WINAPI
GlobalInfo16( GLOBALINFO
*pInfo
)
932 pInfo
->wcItems
= globalArenaSize
;
933 pInfo
->wcItemsFree
= 0;
934 pInfo
->wcItemsLRU
= 0;
935 for (i
= 0, pArena
= pGlobalArena
; i
< globalArenaSize
; i
++, pArena
++)
936 if (pArena
->size
== 0) pInfo
->wcItemsFree
++;
941 /***********************************************************************
942 * GlobalEntryHandle (TOOLHELP.54)
944 BOOL16 WINAPI
GlobalEntryHandle16( GLOBALENTRY
*pGlobal
, HGLOBAL16 hItem
)
946 GLOBALARENA
*pArena
= GET_ARENA_PTR(hItem
);
948 pGlobal
->dwAddress
= pArena
->base
;
949 pGlobal
->dwBlockSize
= pArena
->size
;
950 pGlobal
->hBlock
= pArena
->handle
;
951 pGlobal
->wcLock
= pArena
->lockCount
;
952 pGlobal
->wcPageLock
= pArena
->pageLockCount
;
953 pGlobal
->wFlags
= (GetCurrentPDB16() == pArena
->hOwner
);
954 pGlobal
->wHeapPresent
= FALSE
;
955 pGlobal
->hOwner
= pArena
->hOwner
;
956 pGlobal
->wType
= GT_UNKNOWN
;
963 /***********************************************************************
964 * GlobalEntryModule (TOOLHELP.55)
966 BOOL16 WINAPI
GlobalEntryModule16( GLOBALENTRY
*pGlobal
, HMODULE16 hModule
,
969 FIXME("(%p, 0x%04x, 0x%04x), stub.\n", pGlobal
, hModule
, wSeg
);
974 /***********************************************************************
975 * MemManInfo (TOOLHELP.72)
977 BOOL16 WINAPI
MemManInfo16( MEMMANINFO
*info
)
982 * Not unsurprisingly although the documention says you
983 * _must_ provide the size in the dwSize field, this function
984 * (under Windows) always fills the structure and returns true.
986 GlobalMemoryStatus( &status
);
987 info
->wPageSize
= getpagesize();
988 info
->dwLargestFreeBlock
= status
.dwAvailVirtual
;
989 info
->dwMaxPagesAvailable
= info
->dwLargestFreeBlock
/ info
->wPageSize
;
990 info
->dwMaxPagesLockable
= info
->dwMaxPagesAvailable
;
991 info
->dwTotalLinearSpace
= status
.dwTotalVirtual
/ info
->wPageSize
;
992 info
->dwTotalUnlockedPages
= info
->dwTotalLinearSpace
;
993 info
->dwFreePages
= info
->dwMaxPagesAvailable
;
994 info
->dwTotalPages
= info
->dwTotalLinearSpace
;
995 info
->dwFreeLinearSpace
= info
->dwMaxPagesAvailable
;
996 info
->dwSwapFilePages
= status
.dwTotalPageFile
/ info
->wPageSize
;
1000 /***********************************************************************
1001 * GetFreeMemInfo (KERNEL.316)
1003 DWORD WINAPI
GetFreeMemInfo16(void)
1006 MemManInfo16( &info
);
1007 return MAKELONG( info
.dwTotalLinearSpace
, info
.dwMaxPagesAvailable
);
1011 * Win32 Global heap functions (GlobalXXX).
1012 * These functions included in Win32 for compatibility with 16 bit Windows
1013 * Especially the moveable blocks and handles are oldish.
1014 * But the ability to directly allocate memory with GPTR and LPTR is widely
1017 * The handle stuff looks horrible, but it's implemented almost like Win95
1022 #define MAGIC_GLOBAL_USED 0x5342
1023 #define GLOBAL_LOCK_MAX 0xFF
1024 #define HANDLE_TO_INTERN(h) ((PGLOBAL32_INTERN)(((char *)(h))-2))
1025 #define INTERN_TO_HANDLE(i) ((HGLOBAL) &((i)->Pointer))
1026 #define POINTER_TO_HANDLE(p) (*(((HGLOBAL *)(p))-1))
1027 #define ISHANDLE(h) (((DWORD)(h)&2)!=0)
1028 #define ISPOINTER(h) (((DWORD)(h)&2)==0)
1030 typedef struct __GLOBAL32_INTERN
1033 LPVOID Pointer WINE_PACKED
;
1036 } GLOBAL32_INTERN
, *PGLOBAL32_INTERN
;
1039 /***********************************************************************
1040 * GlobalAlloc (KERNEL32.@)
1045 HGLOBAL WINAPI
GlobalAlloc(
1046 UINT flags
, /* [in] Object allocation attributes */
1047 SIZE_T size
/* [in] Number of bytes to allocate */
1049 PGLOBAL32_INTERN pintern
;
1053 if(flags
&GMEM_ZEROINIT
)
1054 hpflags
=HEAP_ZERO_MEMORY
;
1058 TRACE("() flags=%04x\n", flags
);
1060 if((flags
& GMEM_MOVEABLE
)==0) /* POINTER */
1062 palloc
=HeapAlloc(GetProcessHeap(), hpflags
, size
);
1063 return (HGLOBAL
) palloc
;
1067 /* HeapLock(heap); */
1069 pintern
=HeapAlloc(GetProcessHeap(), 0, sizeof(GLOBAL32_INTERN
));
1070 if (!pintern
) return 0;
1073 if (!(palloc
=HeapAlloc(GetProcessHeap(), hpflags
, size
+sizeof(HGLOBAL
)))) {
1074 HeapFree(GetProcessHeap(), 0, pintern
);
1077 *(HGLOBAL
*)palloc
=INTERN_TO_HANDLE(pintern
);
1078 pintern
->Pointer
=(char *) palloc
+sizeof(HGLOBAL
);
1081 pintern
->Pointer
=NULL
;
1082 pintern
->Magic
=MAGIC_GLOBAL_USED
;
1083 pintern
->Flags
=flags
>>8;
1084 pintern
->LockCount
=0;
1086 /* HeapUnlock(heap); */
1088 return INTERN_TO_HANDLE(pintern
);
1093 /***********************************************************************
1094 * GlobalLock (KERNEL32.@)
1096 * Pointer to first byte of block
1099 LPVOID WINAPI
GlobalLock(
1100 HGLOBAL hmem
/* [in] Handle of global memory object */
1102 PGLOBAL32_INTERN pintern
;
1106 return (LPVOID
) hmem
;
1108 /* HeapLock(GetProcessHeap()); */
1110 pintern
=HANDLE_TO_INTERN(hmem
);
1111 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
1113 if(pintern
->LockCount
<GLOBAL_LOCK_MAX
)
1114 pintern
->LockCount
++;
1115 palloc
=pintern
->Pointer
;
1119 WARN("invalid handle\n");
1120 palloc
=(LPVOID
) NULL
;
1121 SetLastError(ERROR_INVALID_HANDLE
);
1123 /* HeapUnlock(GetProcessHeap()); */;
1128 /***********************************************************************
1129 * GlobalUnlock (KERNEL32.@)
1131 * TRUE: Object is still locked
1132 * FALSE: Object is unlocked
1134 BOOL WINAPI
GlobalUnlock(
1135 HGLOBAL hmem
/* [in] Handle of global memory object */
1137 PGLOBAL32_INTERN pintern
;
1140 if (ISPOINTER(hmem
)) return FALSE
;
1144 /* HeapLock(GetProcessHeap()); */
1145 pintern
=HANDLE_TO_INTERN(hmem
);
1146 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
1148 if((pintern
->LockCount
<GLOBAL_LOCK_MAX
)&&(pintern
->LockCount
>0))
1149 pintern
->LockCount
--;
1151 locked
= (pintern
->LockCount
!= 0);
1152 if (!locked
) SetLastError(NO_ERROR
);
1156 WARN("invalid handle\n");
1157 SetLastError(ERROR_INVALID_HANDLE
);
1160 /* HeapUnlock(GetProcessHeap()); */
1162 __EXCEPT(page_fault
)
1164 ERR("page fault occurred ! Caused by bug ?\n");
1165 SetLastError( ERROR_INVALID_PARAMETER
);
1173 /***********************************************************************
1174 * GlobalHandle (KERNEL32.@)
1175 * Returns the handle associated with the specified pointer.
1181 HGLOBAL WINAPI
GlobalHandle(
1182 LPCVOID pmem
/* [in] Pointer to global memory block */
1185 PGLOBAL32_INTERN maybe_intern
;
1190 SetLastError( ERROR_INVALID_PARAMETER
);
1198 /* note that if pmem is a pointer to a a block allocated by */
1199 /* GlobalAlloc with GMEM_MOVEABLE then magic test in HeapValidate */
1201 if (ISPOINTER(pmem
)) {
1202 if (HeapValidate( GetProcessHeap(), 0, pmem
)) {
1203 handle
= (HGLOBAL
)pmem
; /* valid fixed block */
1206 handle
= POINTER_TO_HANDLE(pmem
);
1208 handle
= (HGLOBAL
)pmem
;
1210 /* Now test handle either passed in or retrieved from pointer */
1211 maybe_intern
= HANDLE_TO_INTERN( handle
);
1212 if (maybe_intern
->Magic
== MAGIC_GLOBAL_USED
) {
1213 test
= maybe_intern
->Pointer
;
1214 if (HeapValidate( GetProcessHeap(), 0, ((HGLOBAL
*)test
)-1 ) && /* obj(-handle) valid arena? */
1215 HeapValidate( GetProcessHeap(), 0, maybe_intern
)) /* intern valid arena? */
1216 break; /* valid moveable block */
1219 SetLastError( ERROR_INVALID_HANDLE
);
1221 __EXCEPT(page_fault
)
1223 SetLastError( ERROR_INVALID_HANDLE
);
1232 /***********************************************************************
1233 * GlobalReAlloc (KERNEL32.@)
1238 HGLOBAL WINAPI
GlobalReAlloc(
1239 HGLOBAL hmem
, /* [in] Handle of global memory object */
1240 SIZE_T size
, /* [in] New size of block */
1241 UINT flags
/* [in] How to reallocate object */
1245 PGLOBAL32_INTERN pintern
;
1246 DWORD heap_flags
= (flags
& GMEM_ZEROINIT
) ? HEAP_ZERO_MEMORY
: 0;
1249 /* HeapLock(heap); */
1250 if(flags
& GMEM_MODIFY
) /* modify flags */
1252 if( ISPOINTER(hmem
) && (flags
& GMEM_MOVEABLE
))
1254 /* make a fixed block moveable
1255 * actually only NT is able to do this. But it's soo simple
1259 ERR("GlobalReAlloc32 with null handle!\n");
1260 SetLastError( ERROR_NOACCESS
);
1263 size
=HeapSize(GetProcessHeap(), 0, (LPVOID
) hmem
);
1264 hnew
=GlobalAlloc( flags
, size
);
1265 palloc
=GlobalLock(hnew
);
1266 memcpy(palloc
, (LPVOID
) hmem
, size
);
1270 else if( ISPOINTER(hmem
) &&(flags
& GMEM_DISCARDABLE
))
1272 /* change the flags to make our block "discardable" */
1273 pintern
=HANDLE_TO_INTERN(hmem
);
1274 pintern
->Flags
= pintern
->Flags
| (GMEM_DISCARDABLE
>> 8);
1279 SetLastError(ERROR_INVALID_PARAMETER
);
1287 /* reallocate fixed memory */
1288 hnew
=(HGLOBAL
)HeapReAlloc(GetProcessHeap(), heap_flags
, (LPVOID
) hmem
, size
);
1292 /* reallocate a moveable block */
1293 pintern
=HANDLE_TO_INTERN(hmem
);
1296 /* Apparently Windows doesn't care whether the handle is locked at this point */
1297 /* See also the same comment in GlobalFree() */
1298 if(pintern
->LockCount
>1) {
1299 ERR("handle 0x%08lx is still locked, cannot realloc!\n",(DWORD
)hmem
);
1300 SetLastError(ERROR_INVALID_HANDLE
);
1306 if(pintern
->Pointer
)
1308 if((palloc
= HeapReAlloc(GetProcessHeap(), heap_flags
,
1309 (char *) pintern
->Pointer
-sizeof(HGLOBAL
),
1310 size
+sizeof(HGLOBAL
))) == NULL
)
1311 return 0; /* Block still valid */
1312 pintern
->Pointer
=(char *) palloc
+sizeof(HGLOBAL
);
1316 if((palloc
=HeapAlloc(GetProcessHeap(), heap_flags
, size
+sizeof(HGLOBAL
)))
1319 *(HGLOBAL
*)palloc
=hmem
;
1320 pintern
->Pointer
=(char *) palloc
+sizeof(HGLOBAL
);
1325 if(pintern
->Pointer
)
1327 HeapFree(GetProcessHeap(), 0, (char *) pintern
->Pointer
-sizeof(HGLOBAL
));
1328 pintern
->Pointer
=NULL
;
1333 /* HeapUnlock(heap); */
1338 /***********************************************************************
1339 * GlobalFree (KERNEL32.@)
1344 HGLOBAL WINAPI
GlobalFree(
1345 HGLOBAL hmem
/* [in] Handle of global memory object */
1347 PGLOBAL32_INTERN pintern
;
1353 if(ISPOINTER(hmem
)) /* POINTER */
1355 if(!HeapFree(GetProcessHeap(), 0, (LPVOID
) hmem
)) hmem
= 0;
1359 /* HeapLock(heap); */
1360 pintern
=HANDLE_TO_INTERN(hmem
);
1362 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
1365 /* WIN98 does not make this test. That is you can free a */
1366 /* block you have not unlocked. Go figure!! */
1367 /* if(pintern->LockCount!=0) */
1368 /* SetLastError(ERROR_INVALID_HANDLE); */
1370 if(pintern
->Pointer
)
1371 if(!HeapFree(GetProcessHeap(), 0, (char *)(pintern
->Pointer
)-sizeof(HGLOBAL
)))
1373 if(!HeapFree(GetProcessHeap(), 0, pintern
))
1376 /* HeapUnlock(heap); */
1379 __EXCEPT(page_fault
)
1381 ERR("page fault occurred ! Caused by bug ?\n");
1382 SetLastError( ERROR_INVALID_PARAMETER
);
1390 /***********************************************************************
1391 * GlobalSize (KERNEL32.@)
1393 * Size in bytes of the global memory object
1396 SIZE_T WINAPI
GlobalSize(
1397 HGLOBAL hmem
/* [in] Handle of global memory object */
1400 PGLOBAL32_INTERN pintern
;
1404 retval
=HeapSize(GetProcessHeap(), 0, (LPVOID
) hmem
);
1408 /* HeapLock(heap); */
1409 pintern
=HANDLE_TO_INTERN(hmem
);
1411 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
1413 if (!pintern
->Pointer
) /* handle case of GlobalAlloc( ??,0) */
1415 retval
=HeapSize(GetProcessHeap(), 0,
1416 (char *)(pintern
->Pointer
)-sizeof(HGLOBAL
))-4;
1417 if (retval
== 0xffffffff-4) retval
= 0;
1421 WARN("invalid handle\n");
1424 /* HeapUnlock(heap); */
1426 /* HeapSize returns 0xffffffff on failure */
1427 if (retval
== 0xffffffff) retval
= 0;
1432 /***********************************************************************
1433 * GlobalWire (KERNEL32.@)
1435 LPVOID WINAPI
GlobalWire(HGLOBAL hmem
)
1437 return GlobalLock( hmem
);
1441 /***********************************************************************
1442 * GlobalUnWire (KERNEL32.@)
1444 BOOL WINAPI
GlobalUnWire(HGLOBAL hmem
)
1446 return GlobalUnlock( hmem
);
1450 /***********************************************************************
1451 * GlobalFix (KERNEL32.@)
1453 VOID WINAPI
GlobalFix(HGLOBAL hmem
)
1459 /***********************************************************************
1460 * GlobalUnfix (KERNEL32.@)
1462 VOID WINAPI
GlobalUnfix(HGLOBAL hmem
)
1464 GlobalUnlock( hmem
);
1468 /***********************************************************************
1469 * GlobalFlags (KERNEL32.@)
1470 * Returns information about the specified global memory object
1473 * Should this return GMEM_INVALID_HANDLE on invalid handle?
1476 * Value specifying allocation flags and lock count
1477 * GMEM_INVALID_HANDLE: Failure
1479 UINT WINAPI
GlobalFlags(
1480 HGLOBAL hmem
/* [in] Handle to global memory object */
1483 PGLOBAL32_INTERN pintern
;
1491 /* HeapLock(GetProcessHeap()); */
1492 pintern
=HANDLE_TO_INTERN(hmem
);
1493 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
1495 retval
=pintern
->LockCount
+ (pintern
->Flags
<<8);
1496 if(pintern
->Pointer
==0)
1497 retval
|= GMEM_DISCARDED
;
1501 WARN("Invalid handle: %p\n", hmem
);
1504 /* HeapUnlock(GetProcessHeap()); */
1510 /***********************************************************************
1511 * GlobalCompact (KERNEL32.@)
1513 SIZE_T WINAPI
GlobalCompact( DWORD minfree
)
1515 return 0; /* GlobalCompact does nothing in Win32 */
1519 /***********************************************************************
1520 * GlobalMemoryStatus (KERNEL32.@)
1524 VOID WINAPI
GlobalMemoryStatus(
1525 LPMEMORYSTATUS lpmem
1527 static MEMORYSTATUS cached_memstatus
;
1528 static int cache_lastchecked
= 0;
1537 if (time(NULL
)==cache_lastchecked
) {
1538 memcpy(lpmem
,&cached_memstatus
,sizeof(MEMORYSTATUS
));
1541 cache_lastchecked
= time(NULL
);
1543 lpmem
->dwMemoryLoad
= 0;
1544 lpmem
->dwTotalPhys
= 16*1024*1024;
1545 lpmem
->dwAvailPhys
= 16*1024*1024;
1546 lpmem
->dwTotalPageFile
= 16*1024*1024;
1547 lpmem
->dwAvailPageFile
= 16*1024*1024;
1550 f
= fopen( "/proc/meminfo", "r" );
1554 int total
, used
, free
, shared
, buffers
, cached
;
1556 lpmem
->dwLength
= sizeof(MEMORYSTATUS
);
1557 lpmem
->dwTotalPhys
= lpmem
->dwAvailPhys
= 0;
1558 lpmem
->dwTotalPageFile
= lpmem
->dwAvailPageFile
= 0;
1559 while (fgets( buffer
, sizeof(buffer
), f
))
1561 /* old style /proc/meminfo ... */
1562 if (sscanf( buffer
, "Mem: %d %d %d %d %d %d", &total
, &used
, &free
, &shared
, &buffers
, &cached
))
1564 lpmem
->dwTotalPhys
+= total
;
1565 lpmem
->dwAvailPhys
+= free
+ buffers
+ cached
;
1567 if (sscanf( buffer
, "Swap: %d %d %d", &total
, &used
, &free
))
1569 lpmem
->dwTotalPageFile
+= total
;
1570 lpmem
->dwAvailPageFile
+= free
;
1573 /* new style /proc/meminfo ... */
1574 if (sscanf(buffer
, "MemTotal: %d", &total
))
1575 lpmem
->dwTotalPhys
= total
*1024;
1576 if (sscanf(buffer
, "MemFree: %d", &free
))
1577 lpmem
->dwAvailPhys
= free
*1024;
1578 if (sscanf(buffer
, "SwapTotal: %d", &total
))
1579 lpmem
->dwTotalPageFile
= total
*1024;
1580 if (sscanf(buffer
, "SwapFree: %d", &free
))
1581 lpmem
->dwAvailPageFile
= free
*1024;
1582 if (sscanf(buffer
, "Buffers: %d", &buffers
))
1583 lpmem
->dwAvailPhys
+= buffers
*1024;
1584 if (sscanf(buffer
, "Cached: %d", &cached
))
1585 lpmem
->dwAvailPhys
+= cached
*1024;
1589 if (lpmem
->dwTotalPhys
)
1591 DWORD TotalPhysical
= lpmem
->dwTotalPhys
+lpmem
->dwTotalPageFile
;
1592 DWORD AvailPhysical
= lpmem
->dwAvailPhys
+lpmem
->dwAvailPageFile
;
1593 lpmem
->dwMemoryLoad
= (TotalPhysical
-AvailPhysical
)
1594 / (TotalPhysical
/ 100);
1597 #elif defined(__FreeBSD__)
1598 sysctlbyname("hw.physmem", NULL
, &size_sys
, NULL
, 0);
1599 tmp
= malloc(size_sys
* sizeof(int));
1600 sysctlbyname("hw.physmem", tmp
, &size_sys
, NULL
, 0);
1603 lpmem
->dwTotalPhys
= *tmp
;
1605 sysctlbyname("hw.usermem", NULL
, &size_sys
, NULL
, 0);
1606 tmp
= malloc(size_sys
* sizeof(int));
1607 sysctlbyname("hw.usermem", tmp
, &size_sys
, NULL
, 0);
1610 lpmem
->dwAvailPhys
= *tmp
;
1611 lpmem
->dwTotalPageFile
= *tmp
;
1612 lpmem
->dwAvailPageFile
= *tmp
;
1613 lpmem
->dwMemoryLoad
= lpmem
->dwTotalPhys
- lpmem
->dwAvailPhys
;
1616 lpmem
->dwAvailPhys
= lpmem
->dwTotalPhys
;
1617 lpmem
->dwTotalPageFile
= lpmem
->dwTotalPhys
;
1618 lpmem
->dwAvailPageFile
= lpmem
->dwTotalPhys
;
1619 lpmem
->dwMemoryLoad
= 0;
1625 /* Some applications (e.g. QuickTime 6) crash if we tell them there
1626 * is more than 2GB of physical memory.
1628 if (lpmem
->dwTotalPhys
>2U*1024*1024*1024)
1630 lpmem
->dwTotalPhys
=2U*1024*1024*1024;
1631 lpmem
->dwAvailPhys
=2U*1024*1024*1024;
1634 /* FIXME: should do something for other systems */
1636 lpmem
->dwTotalVirtual
= (char*)si
.lpMaximumApplicationAddress
-(char*)si
.lpMinimumApplicationAddress
;
1637 /* FIXME: we should track down all the already allocated VM pages and substract them, for now arbitrarily remove 64KB so that it matches NT */
1638 lpmem
->dwAvailVirtual
= lpmem
->dwTotalVirtual
-64*1024;
1639 memcpy(&cached_memstatus
,lpmem
,sizeof(MEMORYSTATUS
));
1641 /* it appears some memory display programs want to divide by these values */
1642 if(lpmem
->dwTotalPageFile
==0)
1643 lpmem
->dwTotalPageFile
++;
1645 if(lpmem
->dwAvailPageFile
==0)
1646 lpmem
->dwAvailPageFile
++;
1648 TRACE("<-- LPMEMORYSTATUS: dwLength %ld, dwMemoryLoad %ld, dwTotalPhys %ld, dwAvailPhys %ld,"
1649 " dwTotalPageFile %ld, dwAvailPageFile %ld, dwTotalVirtual %ld, dwAvailVirtual %ld\n",
1650 lpmem
->dwLength
, lpmem
->dwMemoryLoad
, lpmem
->dwTotalPhys
, lpmem
->dwAvailPhys
,
1651 lpmem
->dwTotalPageFile
, lpmem
->dwAvailPageFile
, lpmem
->dwTotalVirtual
,
1652 lpmem
->dwAvailVirtual
);
1655 /***********************************************************************
1656 * A20Proc (KERNEL.165)
1657 * A20_Proc (SYSTEM.20)
1659 void WINAPI
A20Proc16( WORD unused
)
1661 /* this is also a NOP in Windows */
1664 /***********************************************************************
1665 * LimitEMSPages (KERNEL.156)
1667 DWORD WINAPI
LimitEMSPages16( DWORD unused
)