4 * Copyright 1995, 1996 Alexandre Julliard
5 * Copyright 1996 Huw Davies
6 * Copyright 1998 Ulrich Weigand
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
24 #include "wine/port.h"
32 #include <sys/types.h>
34 #ifdef HAVE_SYS_PARAM_H
35 #include <sys/param.h>
37 #ifdef HAVE_SYS_SYSCTL_H
38 #include <sys/sysctl.h>
45 /* FIXME: Unfortunately swapctl can't be used with largefile.... */
46 # undef _FILE_OFFSET_BITS
47 # define _FILE_OFFSET_BITS 32
48 # ifdef HAVE_SYS_RESOURCE_H
49 # include <sys/resource.h>
51 # ifdef HAVE_SYS_STAT_H
52 # include <sys/stat.h>
54 # include <sys/swap.h>
63 #include "wine/exception.h"
64 #include "wine/debug.h"
66 WINE_DEFAULT_DEBUG_CHANNEL(heap
);
68 /* address where we try to map the system heap */
69 #define SYSTEM_HEAP_BASE ((void*)0x80000000)
70 #define SYSTEM_HEAP_SIZE 0x1000000 /* Default heap size = 16Mb */
72 static HANDLE systemHeap
; /* globally shared heap */
75 /***********************************************************************
76 * HEAP_CreateSystemHeap
78 * Create the system heap.
80 static inline HANDLE
HEAP_CreateSystemHeap(void)
86 /* create the system heap event first */
87 event
= CreateEventA( NULL
, TRUE
, FALSE
, "__wine_system_heap_event" );
89 if (!(map
= CreateFileMappingA( INVALID_HANDLE_VALUE
, NULL
, SEC_COMMIT
| PAGE_READWRITE
,
90 0, SYSTEM_HEAP_SIZE
, "__wine_system_heap" ))) return 0;
91 created
= (GetLastError() != ERROR_ALREADY_EXISTS
);
93 if (!(base
= MapViewOfFileEx( map
, FILE_MAP_ALL_ACCESS
, 0, 0, 0, SYSTEM_HEAP_BASE
)))
95 /* pre-defined address not available */
96 ERR( "system heap base address %p not available\n", SYSTEM_HEAP_BASE
);
100 if (created
) /* newly created heap */
102 systemHeap
= RtlCreateHeap( HEAP_SHARED
, base
, SYSTEM_HEAP_SIZE
,
103 SYSTEM_HEAP_SIZE
, NULL
, NULL
);
108 /* wait for the heap to be initialized */
109 WaitForSingleObject( event
, INFINITE
);
110 systemHeap
= (HANDLE
)base
;
117 /***********************************************************************
118 * HeapCreate (KERNEL32.@)
120 * Create a heap object.
123 * Handle of heap: Success
126 HANDLE WINAPI
HeapCreate(
127 DWORD flags
, /* [in] Heap allocation flag */
128 SIZE_T initialSize
, /* [in] Initial heap size */
129 SIZE_T maxSize
/* [in] Maximum heap size */
133 if ( flags
& HEAP_SHARED
)
135 if (!systemHeap
) HEAP_CreateSystemHeap();
136 else WARN( "Shared Heap requested, returning system heap.\n" );
141 ret
= RtlCreateHeap( flags
, NULL
, maxSize
, initialSize
, NULL
, NULL
);
142 if (!ret
) SetLastError( ERROR_NOT_ENOUGH_MEMORY
);
148 /***********************************************************************
149 * HeapDestroy (KERNEL32.@)
151 * Destroy a heap object.
157 BOOL WINAPI
HeapDestroy( HANDLE heap
/* [in] Handle of heap */ )
159 if (heap
== systemHeap
)
161 WARN( "attempt to destroy system heap, returning TRUE!\n" );
164 if (!RtlDestroyHeap( heap
)) return TRUE
;
165 SetLastError( ERROR_INVALID_HANDLE
);
170 /***********************************************************************
171 * HeapCompact (KERNEL32.@)
173 SIZE_T WINAPI
HeapCompact( HANDLE heap
, DWORD flags
)
175 return RtlCompactHeap( heap
, flags
);
179 /***********************************************************************
180 * HeapValidate (KERNEL32.@)
181 * Validates a specified heap.
190 BOOL WINAPI
HeapValidate(
191 HANDLE heap
, /* [in] Handle to the heap */
192 DWORD flags
, /* [in] Bit flags that control access during operation */
193 LPCVOID block
/* [in] Optional pointer to memory block to validate */
195 return RtlValidateHeap( heap
, flags
, block
);
199 /***********************************************************************
200 * HeapWalk (KERNEL32.@)
201 * Enumerates the memory blocks in a specified heap.
204 * - handling of PROCESS_HEAP_ENTRY_MOVEABLE and
205 * PROCESS_HEAP_ENTRY_DDESHARE (needs heap.c support)
211 BOOL WINAPI
HeapWalk(
212 HANDLE heap
, /* [in] Handle to heap to enumerate */
213 LPPROCESS_HEAP_ENTRY entry
/* [out] Pointer to structure of enumeration info */
215 NTSTATUS ret
= RtlWalkHeap( heap
, entry
);
216 if (ret
) SetLastError( RtlNtStatusToDosError(ret
) );
221 /***********************************************************************
222 * HeapLock (KERNEL32.@)
223 * Attempts to acquire the critical section object for a specified heap.
229 BOOL WINAPI
HeapLock(
230 HANDLE heap
/* [in] Handle of heap to lock for exclusive access */
232 return RtlLockHeap( heap
);
236 /***********************************************************************
237 * HeapUnlock (KERNEL32.@)
238 * Releases ownership of the critical section object.
244 BOOL WINAPI
HeapUnlock(
245 HANDLE heap
/* [in] Handle to the heap to unlock */
247 return RtlUnlockHeap( heap
);
251 /***********************************************************************
252 * GetProcessHeap (KERNEL32.@)
254 HANDLE WINAPI
GetProcessHeap(void)
256 return NtCurrentTeb()->Peb
->ProcessHeap
;
260 /***********************************************************************
261 * GetProcessHeaps (KERNEL32.@)
263 DWORD WINAPI
GetProcessHeaps( DWORD count
, HANDLE
*heaps
)
265 return RtlGetProcessHeaps( count
, heaps
);
269 /* These are needed so that we can call the functions from inside kernel itself */
271 /***********************************************************************
272 * HeapAlloc (KERNEL32.@)
274 LPVOID WINAPI
HeapAlloc( HANDLE heap
, DWORD flags
, SIZE_T size
)
276 return RtlAllocateHeap( heap
, flags
, size
);
279 BOOL WINAPI
HeapFree( HANDLE heap
, DWORD flags
, LPVOID ptr
)
281 return RtlFreeHeap( heap
, flags
, ptr
);
284 LPVOID WINAPI
HeapReAlloc( HANDLE heap
, DWORD flags
, LPVOID ptr
, SIZE_T size
)
286 return RtlReAllocateHeap( heap
, flags
, ptr
, size
);
289 SIZE_T WINAPI
HeapSize( HANDLE heap
, DWORD flags
, LPCVOID ptr
)
291 return RtlSizeHeap( heap
, flags
, ptr
);
294 BOOL WINAPI
HeapSetInformation( HANDLE heap
, HEAP_INFORMATION_CLASS infoclass
, PVOID info
, SIZE_T size
)
296 FIXME("%p %d %p %ld\n", heap
, infoclass
, info
, size
);
301 * Win32 Global heap functions (GlobalXXX).
302 * These functions included in Win32 for compatibility with 16 bit Windows
303 * Especially the moveable blocks and handles are oldish.
304 * But the ability to directly allocate memory with GPTR and LPTR is widely
307 * The handle stuff looks horrible, but it's implemented almost like Win95
312 #define MAGIC_GLOBAL_USED 0x5342
313 #define HANDLE_TO_INTERN(h) ((PGLOBAL32_INTERN)(((char *)(h))-2))
314 #define INTERN_TO_HANDLE(i) ((HGLOBAL) &((i)->Pointer))
315 #define POINTER_TO_HANDLE(p) (*(((const HGLOBAL *)(p))-2))
316 #define ISHANDLE(h) (((ULONG_PTR)(h)&2)!=0)
317 #define ISPOINTER(h) (((ULONG_PTR)(h)&2)==0)
318 /* align the storage needed for the HGLOBAL on an 8byte boundary thus
319 * GlobalAlloc/GlobalReAlloc'ing with GMEM_MOVEABLE of memory with
320 * size = 8*k, where k=1,2,3,... alloc's exactly the given size.
321 * The Minolta DiMAGE Image Viewer heavily relies on this, corrupting
322 * the output jpeg's > 1 MB if not */
323 #define HGLOBAL_STORAGE 8 /* sizeof(HGLOBAL)*2 */
325 #include "pshpack1.h"
327 typedef struct __GLOBAL32_INTERN
333 } GLOBAL32_INTERN
, *PGLOBAL32_INTERN
;
337 /***********************************************************************
338 * GlobalAlloc (KERNEL32.@)
340 * Allocate a global memory object.
346 HGLOBAL WINAPI
GlobalAlloc(
347 UINT flags
, /* [in] Object allocation attributes */
348 SIZE_T size
/* [in] Number of bytes to allocate */
350 PGLOBAL32_INTERN pintern
;
354 if(flags
&GMEM_ZEROINIT
)
355 hpflags
=HEAP_ZERO_MEMORY
;
359 TRACE("() flags=%04x\n", flags
);
361 if((flags
& GMEM_MOVEABLE
)==0) /* POINTER */
363 palloc
=HeapAlloc(GetProcessHeap(), hpflags
, size
);
364 return (HGLOBAL
) palloc
;
368 if (size
> INT_MAX
-HGLOBAL_STORAGE
)
370 SetLastError(ERROR_OUTOFMEMORY
);
374 RtlLockHeap(GetProcessHeap());
376 pintern
= HeapAlloc(GetProcessHeap(), 0, sizeof(GLOBAL32_INTERN
));
379 pintern
->Magic
= MAGIC_GLOBAL_USED
;
380 pintern
->Flags
= flags
>> 8;
381 pintern
->LockCount
= 0;
385 palloc
= HeapAlloc(GetProcessHeap(), hpflags
, size
+HGLOBAL_STORAGE
);
388 HeapFree(GetProcessHeap(), 0, pintern
);
393 *(HGLOBAL
*)palloc
= INTERN_TO_HANDLE(pintern
);
394 pintern
->Pointer
= (char *)palloc
+ HGLOBAL_STORAGE
;
398 pintern
->Pointer
= NULL
;
401 RtlUnlockHeap(GetProcessHeap());
402 return pintern
? INTERN_TO_HANDLE(pintern
) : 0;
407 /***********************************************************************
408 * GlobalLock (KERNEL32.@)
410 * Lock a global memory object and return a pointer to first byte of the memory
413 * hmem [I] Handle of the global memory object
416 * Success: Pointer to first byte of the memory block
420 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
423 LPVOID WINAPI
GlobalLock(HGLOBAL hmem
)
425 PGLOBAL32_INTERN pintern
;
429 return IsBadReadPtr(hmem
, 1) ? NULL
: hmem
;
431 RtlLockHeap(GetProcessHeap());
434 pintern
= HANDLE_TO_INTERN(hmem
);
435 if (pintern
->Magic
== MAGIC_GLOBAL_USED
)
437 palloc
= pintern
->Pointer
;
438 if (!pintern
->Pointer
)
439 SetLastError(ERROR_DISCARDED
);
440 else if (pintern
->LockCount
< GMEM_LOCKCOUNT
)
441 pintern
->LockCount
++;
445 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem
, pintern
->Magic
);
447 SetLastError(ERROR_INVALID_HANDLE
);
452 WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem
);
454 SetLastError(ERROR_INVALID_HANDLE
);
457 RtlUnlockHeap(GetProcessHeap());
462 /***********************************************************************
463 * GlobalUnlock (KERNEL32.@)
465 * Unlock a global memory object.
468 * hmem [I] Handle of the global memory object
471 * Success: Object is still locked
472 * Failure: FALSE (The Object is unlocked)
475 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
478 BOOL WINAPI
GlobalUnlock(HGLOBAL hmem
)
480 PGLOBAL32_INTERN pintern
;
483 if (ISPOINTER(hmem
)) return TRUE
;
485 RtlLockHeap(GetProcessHeap());
488 pintern
=HANDLE_TO_INTERN(hmem
);
489 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
491 if(pintern
->LockCount
)
493 pintern
->LockCount
--;
494 locked
= (pintern
->LockCount
!= 0);
495 if (!locked
) SetLastError(NO_ERROR
);
499 WARN("%p not locked\n", hmem
);
500 SetLastError(ERROR_NOT_LOCKED
);
506 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem
, pintern
->Magic
);
507 SetLastError(ERROR_INVALID_HANDLE
);
513 WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem
);
514 SetLastError( ERROR_INVALID_PARAMETER
);
518 RtlUnlockHeap(GetProcessHeap());
523 /***********************************************************************
524 * GlobalHandle (KERNEL32.@)
526 * Get the handle associated with the pointer to a global memory block.
532 HGLOBAL WINAPI
GlobalHandle(
533 LPCVOID pmem
/* [in] Pointer to global memory block */
536 PGLOBAL32_INTERN maybe_intern
;
541 SetLastError( ERROR_INVALID_PARAMETER
);
545 RtlLockHeap(GetProcessHeap());
550 /* note that if pmem is a pointer to a block allocated by */
551 /* GlobalAlloc with GMEM_MOVEABLE then magic test in HeapValidate */
553 if (ISPOINTER(pmem
)) {
554 if (HeapValidate( GetProcessHeap(), 0, pmem
)) {
555 handle
= (HGLOBAL
)pmem
; /* valid fixed block */
558 handle
= POINTER_TO_HANDLE(pmem
);
560 handle
= (HGLOBAL
)pmem
;
562 /* Now test handle either passed in or retrieved from pointer */
563 maybe_intern
= HANDLE_TO_INTERN( handle
);
564 if (maybe_intern
->Magic
== MAGIC_GLOBAL_USED
) {
565 test
= maybe_intern
->Pointer
;
566 if (HeapValidate( GetProcessHeap(), 0, (const char *)test
- HGLOBAL_STORAGE
) && /* obj(-handle) valid arena? */
567 HeapValidate( GetProcessHeap(), 0, maybe_intern
)) /* intern valid arena? */
568 break; /* valid moveable block */
571 SetLastError( ERROR_INVALID_HANDLE
);
575 SetLastError( ERROR_INVALID_HANDLE
);
579 RtlUnlockHeap(GetProcessHeap());
585 /***********************************************************************
586 * GlobalReAlloc (KERNEL32.@)
588 * Change the size or attributes of a global memory object.
594 HGLOBAL WINAPI
GlobalReAlloc(
595 HGLOBAL hmem
, /* [in] Handle of global memory object */
596 SIZE_T size
, /* [in] New size of block */
597 UINT flags
/* [in] How to reallocate object */
601 PGLOBAL32_INTERN pintern
;
602 DWORD heap_flags
= (flags
& GMEM_ZEROINIT
) ? HEAP_ZERO_MEMORY
: 0;
605 RtlLockHeap(GetProcessHeap());
606 if(flags
& GMEM_MODIFY
) /* modify flags */
608 if( ISPOINTER(hmem
) && (flags
& GMEM_MOVEABLE
))
610 /* make a fixed block moveable
611 * actually only NT is able to do this. But it's soo simple
615 WARN("GlobalReAlloc with null handle!\n");
616 SetLastError( ERROR_NOACCESS
);
621 size
= HeapSize(GetProcessHeap(), 0, (LPVOID
)hmem
);
622 hnew
= GlobalAlloc(flags
, size
);
623 palloc
= GlobalLock(hnew
);
624 memcpy(palloc
, (LPVOID
)hmem
, size
);
629 else if( ISPOINTER(hmem
) &&(flags
& GMEM_DISCARDABLE
))
631 /* change the flags to make our block "discardable" */
632 pintern
=HANDLE_TO_INTERN(hmem
);
633 pintern
->Flags
= pintern
->Flags
| (GMEM_DISCARDABLE
>> 8);
638 SetLastError(ERROR_INVALID_PARAMETER
);
646 /* reallocate fixed memory */
647 hnew
=HeapReAlloc(GetProcessHeap(), heap_flags
, hmem
, size
);
651 /* reallocate a moveable block */
652 pintern
=HANDLE_TO_INTERN(hmem
);
655 /* Apparently Windows doesn't care whether the handle is locked at this point */
656 /* See also the same comment in GlobalFree() */
657 if(pintern
->LockCount
>1) {
658 ERR("handle 0x%08lx is still locked, cannot realloc!\n",(DWORD
)hmem
);
659 SetLastError(ERROR_INVALID_HANDLE
);
667 if(size
> INT_MAX
-HGLOBAL_STORAGE
)
669 SetLastError(ERROR_OUTOFMEMORY
);
672 else if((palloc
= HeapReAlloc(GetProcessHeap(), heap_flags
,
673 (char *) pintern
->Pointer
-HGLOBAL_STORAGE
,
674 size
+HGLOBAL_STORAGE
)) == NULL
)
675 hnew
= 0; /* Block still valid */
677 pintern
->Pointer
= (char *)palloc
+HGLOBAL_STORAGE
;
681 if(size
> INT_MAX
-HGLOBAL_STORAGE
)
683 SetLastError(ERROR_OUTOFMEMORY
);
686 else if((palloc
=HeapAlloc(GetProcessHeap(), heap_flags
, size
+HGLOBAL_STORAGE
))
691 *(HGLOBAL
*)palloc
= hmem
;
692 pintern
->Pointer
= (char *)palloc
+ HGLOBAL_STORAGE
;
698 if (pintern
->LockCount
== 0)
702 HeapFree(GetProcessHeap(), 0, (char *) pintern
->Pointer
-HGLOBAL_STORAGE
);
703 pintern
->Pointer
= NULL
;
708 WARN("not freeing memory associated with locked handle\n");
712 RtlUnlockHeap(GetProcessHeap());
717 /***********************************************************************
718 * GlobalFree (KERNEL32.@)
720 * Free a global memory object.
723 * hmem [I] Handle of the global memory object
727 * Failure: The provided handle
730 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
733 HGLOBAL WINAPI
GlobalFree(HGLOBAL hmem
)
735 PGLOBAL32_INTERN pintern
;
738 RtlLockHeap(GetProcessHeap());
742 if(ISPOINTER(hmem
)) /* POINTER */
744 if(!HeapFree(GetProcessHeap(), 0, (LPVOID
) hmem
))
746 SetLastError(ERROR_INVALID_HANDLE
);
752 pintern
=HANDLE_TO_INTERN(hmem
);
754 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
756 pintern
->Magic
= 0xdead;
758 /* WIN98 does not make this test. That is you can free a */
759 /* block you have not unlocked. Go figure!! */
760 /* if(pintern->LockCount!=0) */
761 /* SetLastError(ERROR_INVALID_HANDLE); */
764 if(!HeapFree(GetProcessHeap(), 0, (char *)(pintern
->Pointer
)-HGLOBAL_STORAGE
))
766 if(!HeapFree(GetProcessHeap(), 0, pintern
))
771 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem
, pintern
->Magic
);
772 SetLastError(ERROR_INVALID_HANDLE
);
779 ERR("(%p): Page fault occurred ! Caused by bug ?\n", hmem
);
780 SetLastError( ERROR_INVALID_PARAMETER
);
784 RtlUnlockHeap(GetProcessHeap());
789 /***********************************************************************
790 * GlobalSize (KERNEL32.@)
792 * Get the size of a global memory object.
795 * hmem [I] Handle of the global memory object
799 * Success: Size in Bytes of the global memory object
802 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
805 SIZE_T WINAPI
GlobalSize(HGLOBAL hmem
)
808 PGLOBAL32_INTERN pintern
;
814 retval
=HeapSize(GetProcessHeap(), 0, (LPVOID
) hmem
);
818 RtlLockHeap(GetProcessHeap());
819 pintern
=HANDLE_TO_INTERN(hmem
);
821 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
823 if (!pintern
->Pointer
) /* handle case of GlobalAlloc( ??,0) */
827 retval
= HeapSize(GetProcessHeap(), 0,
828 (char *)(pintern
->Pointer
) - HGLOBAL_STORAGE
);
829 if (retval
!= (DWORD
)-1) retval
-= HGLOBAL_STORAGE
;
834 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem
, pintern
->Magic
);
835 SetLastError(ERROR_INVALID_HANDLE
);
838 RtlUnlockHeap(GetProcessHeap());
840 /* HeapSize returns 0xffffffff on failure */
841 if (retval
== 0xffffffff) retval
= 0;
846 /***********************************************************************
847 * GlobalWire (KERNEL32.@)
849 LPVOID WINAPI
GlobalWire(HGLOBAL hmem
)
851 return GlobalLock( hmem
);
855 /***********************************************************************
856 * GlobalUnWire (KERNEL32.@)
858 BOOL WINAPI
GlobalUnWire(HGLOBAL hmem
)
860 return GlobalUnlock( hmem
);
864 /***********************************************************************
865 * GlobalFix (KERNEL32.@)
867 VOID WINAPI
GlobalFix(HGLOBAL hmem
)
873 /***********************************************************************
874 * GlobalUnfix (KERNEL32.@)
876 VOID WINAPI
GlobalUnfix(HGLOBAL hmem
)
882 /***********************************************************************
883 * GlobalFlags (KERNEL32.@)
885 * Get information about a global memory object.
888 * hmem [I] Handle of the global memory object
891 * Failure: GMEM_INVALID_HANDLE, when the provided handle is invalid
892 * Success: Value specifying allocation flags and lock count
895 UINT WINAPI
GlobalFlags(HGLOBAL hmem
)
898 PGLOBAL32_INTERN pintern
;
906 RtlLockHeap(GetProcessHeap());
907 pintern
=HANDLE_TO_INTERN(hmem
);
908 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
910 retval
=pintern
->LockCount
+ (pintern
->Flags
<<8);
911 if(pintern
->Pointer
==0)
912 retval
|= GMEM_DISCARDED
;
916 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem
, pintern
->Magic
);
917 SetLastError(ERROR_INVALID_HANDLE
);
918 retval
= GMEM_INVALID_HANDLE
;
920 RtlUnlockHeap(GetProcessHeap());
926 /***********************************************************************
927 * GlobalCompact (KERNEL32.@)
929 SIZE_T WINAPI
GlobalCompact( DWORD minfree
)
931 return 0; /* GlobalCompact does nothing in Win32 */
935 /***********************************************************************
936 * LocalAlloc (KERNEL32.@)
938 * Allocate a local memory object.
945 * Windows memory management does not provide a separate local heap
948 HLOCAL WINAPI
LocalAlloc(
949 UINT flags
, /* [in] Allocation attributes */
950 SIZE_T size
/* [in] Number of bytes to allocate */
952 return (HLOCAL
)GlobalAlloc( flags
, size
);
956 /***********************************************************************
957 * LocalCompact (KERNEL32.@)
959 SIZE_T WINAPI
LocalCompact( UINT minfree
)
961 return 0; /* LocalCompact does nothing in Win32 */
965 /***********************************************************************
966 * LocalFlags (KERNEL32.@)
968 * Get information about a local memory object.
971 * Value specifying allocation flags and lock count.
972 * LMEM_INVALID_HANDLE: Failure
975 * Windows memory management does not provide a separate local heap
978 UINT WINAPI
LocalFlags(
979 HLOCAL handle
/* [in] Handle of memory object */
981 return GlobalFlags( (HGLOBAL
)handle
);
985 /***********************************************************************
986 * LocalFree (KERNEL32.@)
988 * Free a local memory object.
995 * Windows memory management does not provide a separate local heap
998 HLOCAL WINAPI
LocalFree(
999 HLOCAL handle
/* [in] Handle of memory object */
1001 return (HLOCAL
)GlobalFree( (HGLOBAL
)handle
);
1005 /***********************************************************************
1006 * LocalHandle (KERNEL32.@)
1008 * Get the handle associated with the pointer to a local memory block.
1015 * Windows memory management does not provide a separate local heap
1018 HLOCAL WINAPI
LocalHandle(
1019 LPCVOID ptr
/* [in] Address of local memory block */
1021 return (HLOCAL
)GlobalHandle( ptr
);
1025 /***********************************************************************
1026 * LocalLock (KERNEL32.@)
1027 * Locks a local memory object and returns pointer to the first byte
1028 * of the memory block.
1035 * Windows memory management does not provide a separate local heap
1038 LPVOID WINAPI
LocalLock(
1039 HLOCAL handle
/* [in] Address of local memory object */
1041 return GlobalLock( (HGLOBAL
)handle
);
1045 /***********************************************************************
1046 * LocalReAlloc (KERNEL32.@)
1048 * Change the size or attributes of a local memory object.
1055 * Windows memory management does not provide a separate local heap
1058 HLOCAL WINAPI
LocalReAlloc(
1059 HLOCAL handle
, /* [in] Handle of memory object */
1060 SIZE_T size
, /* [in] New size of block */
1061 UINT flags
/* [in] How to reallocate object */
1063 return (HLOCAL
)GlobalReAlloc( (HGLOBAL
)handle
, size
, flags
);
1067 /***********************************************************************
1068 * LocalShrink (KERNEL32.@)
1070 SIZE_T WINAPI
LocalShrink( HGLOBAL handle
, UINT newsize
)
1072 return 0; /* LocalShrink does nothing in Win32 */
1076 /***********************************************************************
1077 * LocalSize (KERNEL32.@)
1079 * Get the size of a local memory object.
1086 * Windows memory management does not provide a separate local heap
1089 SIZE_T WINAPI
LocalSize(
1090 HLOCAL handle
/* [in] Handle of memory object */
1092 return GlobalSize( (HGLOBAL
)handle
);
1096 /***********************************************************************
1097 * LocalUnlock (KERNEL32.@)
1099 * Unlock a local memory object.
1102 * TRUE: Object is still locked
1103 * FALSE: Object is unlocked
1106 * Windows memory management does not provide a separate local heap
1109 BOOL WINAPI
LocalUnlock(
1110 HLOCAL handle
/* [in] Handle of memory object */
1112 return GlobalUnlock( (HGLOBAL
)handle
);
1116 /**********************************************************************
1117 * AllocMappedBuffer (KERNEL32.38)
1119 * This is an undocumented KERNEL32 function that
1120 * SMapLS's a GlobalAlloc'ed buffer.
1123 * EDI register: pointer to buffer
1126 * The buffer is preceded by 8 bytes:
1129 * edi-4 SEGPTR to buffer
1130 * edi-8 some magic Win95 needs for SUnMapLS
1131 * (we use it for the memory handle)
1133 * The SEGPTR is used by the caller!
1135 void WINAPI
__regs_AllocMappedBuffer(
1136 CONTEXT86
*context
/* [in] EDI register: size of buffer to allocate */
1138 HGLOBAL handle
= GlobalAlloc(0, context
->Edi
+ 8);
1139 DWORD
*buffer
= (DWORD
*)GlobalLock(handle
);
1143 if (!(ptr
= MapLS(buffer
+ 2)))
1145 GlobalUnlock(handle
);
1150 context
->Eax
= context
->Edi
= 0;
1153 buffer
[0] = (DWORD
)handle
;
1156 context
->Eax
= (DWORD
) ptr
;
1157 context
->Edi
= (DWORD
)(buffer
+ 2);
1160 #ifdef DEFINE_REGS_ENTRYPOINT
1161 DEFINE_REGS_ENTRYPOINT( AllocMappedBuffer
, 0, 0 )
1164 /**********************************************************************
1165 * FreeMappedBuffer (KERNEL32.39)
1167 * Free a buffer allocated by AllocMappedBuffer
1172 void WINAPI
__regs_FreeMappedBuffer(
1173 CONTEXT86
*context
/* [in] EDI register: pointer to buffer */
1177 DWORD
*buffer
= (DWORD
*)context
->Edi
- 2;
1181 GlobalUnlock((HGLOBAL
)buffer
[0]);
1182 GlobalFree((HGLOBAL
)buffer
[0]);
1185 #ifdef DEFINE_REGS_ENTRYPOINT
1186 DEFINE_REGS_ENTRYPOINT( FreeMappedBuffer
, 0, 0 )
1189 /***********************************************************************
1190 * GlobalMemoryStatusEx (KERNEL32.@)
1191 * A version of GlobalMemoryStatus that can deal with memory over 4GB
1196 BOOL WINAPI
GlobalMemoryStatusEx( LPMEMORYSTATUSEX lpmemex
)
1198 static MEMORYSTATUSEX cached_memstatus
;
1199 static int cache_lastchecked
= 0;
1203 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
1205 int size_sys
, mib
[2];
1206 #elif defined(__APPLE__)
1211 unsigned long pagesize
,maxpages
,freepages
,swapspace
,swapfree
;
1212 struct anoninfo swapinf
;
1216 if (time(NULL
)==cache_lastchecked
) {
1217 memcpy(lpmemex
,&cached_memstatus
,sizeof(*lpmemex
));
1220 cache_lastchecked
= time(NULL
);
1222 lpmemex
->dwLength
= sizeof(*lpmemex
);
1223 lpmemex
->dwMemoryLoad
= 0;
1224 lpmemex
->ullTotalPhys
= 16*1024*1024;
1225 lpmemex
->ullAvailPhys
= 16*1024*1024;
1226 lpmemex
->ullTotalPageFile
= 16*1024*1024;
1227 lpmemex
->ullAvailPageFile
= 16*1024*1024;
1230 f
= fopen( "/proc/meminfo", "r" );
1234 unsigned long total
, used
, free
, shared
, buffers
, cached
;
1236 lpmemex
->ullTotalPhys
= lpmemex
->ullAvailPhys
= 0;
1237 lpmemex
->ullTotalPageFile
= lpmemex
->ullAvailPageFile
= 0;
1238 while (fgets( buffer
, sizeof(buffer
), f
))
1240 /* old style /proc/meminfo ... */
1241 if (sscanf( buffer
, "Mem: %lu %lu %lu %lu %lu %lu",
1242 &total
, &used
, &free
, &shared
, &buffers
, &cached
))
1244 lpmemex
->ullTotalPhys
+= total
;
1245 lpmemex
->ullAvailPhys
+= free
+ buffers
+ cached
;
1247 if (sscanf( buffer
, "Swap: %lu %lu %lu", &total
, &used
, &free
))
1249 lpmemex
->ullTotalPageFile
+= total
;
1250 lpmemex
->ullAvailPageFile
+= free
;
1253 /* new style /proc/meminfo ... */
1254 if (sscanf(buffer
, "MemTotal: %lu", &total
))
1255 lpmemex
->ullTotalPhys
= total
*1024;
1256 if (sscanf(buffer
, "MemFree: %lu", &free
))
1257 lpmemex
->ullAvailPhys
= free
*1024;
1258 if (sscanf(buffer
, "SwapTotal: %lu", &total
))
1259 lpmemex
->ullTotalPageFile
= total
*1024;
1260 if (sscanf(buffer
, "SwapFree: %lu", &free
))
1261 lpmemex
->ullAvailPageFile
= free
*1024;
1262 if (sscanf(buffer
, "Buffers: %lu", &buffers
))
1263 lpmemex
->ullAvailPhys
+= buffers
*1024;
1264 if (sscanf(buffer
, "Cached: %lu", &cached
))
1265 lpmemex
->ullAvailPhys
+= cached
*1024;
1269 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__APPLE__)
1271 mib
[1] = HW_PHYSMEM
;
1272 size_sys
= sizeof(val
);
1273 sysctl(mib
, 2, &val
, &size_sys
, NULL
, 0);
1274 if (val
) lpmemex
->ullTotalPhys
= val
;
1275 mib
[1] = HW_USERMEM
;
1276 size_sys
= sizeof(val
);
1277 sysctl(mib
, 2, &val
, &size_sys
, NULL
, 0);
1278 if (!val
) val
= lpmemex
->ullTotalPhys
;
1279 lpmemex
->ullAvailPhys
= val
;
1280 lpmemex
->ullTotalPageFile
= val
;
1281 lpmemex
->ullAvailPageFile
= val
;
1282 #elif defined ( sun )
1283 pagesize
=sysconf(_SC_PAGESIZE
);
1284 maxpages
=sysconf(_SC_PHYS_PAGES
);
1285 freepages
=sysconf(_SC_AVPHYS_PAGES
);
1286 rval
=swapctl(SC_AINFO
, &swapinf
);
1289 swapspace
=swapinf
.ani_max
*pagesize
;
1290 swapfree
=swapinf
.ani_free
*pagesize
;
1294 WARN("Swap size cannot be determined , assuming equal to physical memory\n");
1295 swapspace
=maxpages
*pagesize
;
1296 swapfree
=maxpages
*pagesize
;
1298 lpmemex
->ullTotalPhys
=pagesize
*maxpages
;
1299 lpmemex
->ullAvailPhys
= pagesize
*freepages
;
1300 lpmemex
->ullTotalPageFile
= swapspace
;
1301 lpmemex
->ullAvailPageFile
= swapfree
;
1304 if (lpmemex
->ullTotalPhys
)
1306 lpmemex
->dwMemoryLoad
= (lpmemex
->ullTotalPhys
-lpmemex
->ullAvailPhys
)
1307 / (lpmemex
->ullTotalPhys
/ 100);
1310 /* Win98 returns only the swapsize in ullTotalPageFile/ullAvailPageFile,
1311 WinXP returns the size of physical memory + swapsize;
1312 mimic the behavior of XP.
1313 Note: Project2k refuses to start if it sees less than 1Mb of free swap.
1315 lpmemex
->ullTotalPageFile
+= lpmemex
->ullTotalPhys
;
1316 lpmemex
->ullAvailPageFile
+= lpmemex
->ullAvailPhys
;
1318 /* Titan Quest refuses to run if TotalPageFile <= ullTotalPhys */
1319 if(lpmemex
->ullTotalPageFile
== lpmemex
->ullTotalPhys
)
1321 lpmemex
->ullTotalPhys
-= 1;
1322 lpmemex
->ullAvailPhys
-= 1;
1325 /* FIXME: should do something for other systems */
1327 lpmemex
->ullTotalVirtual
= (char*)si
.lpMaximumApplicationAddress
-(char*)si
.lpMinimumApplicationAddress
;
1328 /* FIXME: we should track down all the already allocated VM pages and substract them, for now arbitrarily remove 64KB so that it matches NT */
1329 lpmemex
->ullAvailVirtual
= lpmemex
->ullTotalVirtual
-64*1024;
1331 /* MSDN says about AvailExtendedVirtual: Size of unreserved and uncommitted
1332 memory in the extended portion of the virtual address space of the calling
1334 However, I don't know what this means, so set it to zero :(
1336 lpmemex
->ullAvailExtendedVirtual
= 0;
1338 memcpy(&cached_memstatus
,lpmemex
,sizeof(*lpmemex
));
1340 TRACE("<-- LPMEMORYSTATUSEX: dwLength %d, dwMemoryLoad %d, ullTotalPhys %s, ullAvailPhys %s,"
1341 " ullTotalPageFile %s, ullAvailPageFile %s, ullTotalVirtual %s, ullAvailVirtual %s\n",
1342 lpmemex
->dwLength
, lpmemex
->dwMemoryLoad
, wine_dbgstr_longlong(lpmemex
->ullTotalPhys
),
1343 wine_dbgstr_longlong(lpmemex
->ullAvailPhys
), wine_dbgstr_longlong(lpmemex
->ullTotalPageFile
),
1344 wine_dbgstr_longlong(lpmemex
->ullAvailPageFile
), wine_dbgstr_longlong(lpmemex
->ullTotalVirtual
),
1345 wine_dbgstr_longlong(lpmemex
->ullAvailVirtual
) );
1350 /***********************************************************************
1351 * GlobalMemoryStatus (KERNEL32.@)
1352 * Provides information about the status of the memory, so apps can tell
1353 * roughly how much they are able to allocate
1358 VOID WINAPI
GlobalMemoryStatus( LPMEMORYSTATUS lpBuffer
)
1360 MEMORYSTATUSEX memstatus
;
1361 OSVERSIONINFOW osver
;
1363 /* Because GlobalMemoryStatus is identical to GlobalMemoryStatusEX save
1364 for one extra field in the struct, and the lack of a bug, we simply
1365 call GlobalMemoryStatusEx and copy the values across. */
1366 GlobalMemoryStatusEx(&memstatus
);
1368 lpBuffer
->dwLength
= sizeof(*lpBuffer
);
1369 lpBuffer
->dwMemoryLoad
= memstatus
.dwMemoryLoad
;
1371 /* Windows 2000 and later report -1 when values are greater than 4 Gb.
1372 * NT reports values modulo 4 Gb.
1373 * Values between 2 Gb and 4 Gb are rounded down to 2 Gb.
1376 osver
.dwOSVersionInfoSize
= sizeof(osver
);
1377 GetVersionExW(&osver
);
1379 if ( osver
.dwMajorVersion
>= 5 )
1381 lpBuffer
->dwTotalPhys
= (memstatus
.ullTotalPhys
> MAXDWORD
) ? MAXDWORD
:
1382 (memstatus
.ullTotalPhys
> MAXLONG
) ? MAXLONG
: memstatus
.ullTotalPhys
;
1383 lpBuffer
->dwAvailPhys
= (memstatus
.ullAvailPhys
> MAXDWORD
) ? MAXDWORD
:
1384 (memstatus
.ullAvailPhys
> MAXLONG
) ? MAXLONG
: memstatus
.ullAvailPhys
;
1385 lpBuffer
->dwTotalPageFile
= (memstatus
.ullTotalPageFile
> MAXDWORD
) ? MAXDWORD
:
1386 (memstatus
.ullTotalPageFile
> MAXLONG
) ? MAXLONG
: memstatus
.ullTotalPageFile
;
1387 lpBuffer
->dwAvailPageFile
= (memstatus
.ullAvailPageFile
> MAXDWORD
) ? MAXDWORD
:
1388 (memstatus
.ullAvailPageFile
> MAXLONG
) ? MAXLONG
: memstatus
.ullAvailPageFile
;
1389 lpBuffer
->dwTotalVirtual
= (memstatus
.ullTotalVirtual
> MAXDWORD
) ? MAXDWORD
:
1390 (memstatus
.ullTotalVirtual
> MAXLONG
) ? MAXLONG
: memstatus
.ullTotalVirtual
;
1391 lpBuffer
->dwAvailVirtual
= (memstatus
.ullAvailVirtual
> MAXDWORD
) ? MAXDWORD
:
1392 (memstatus
.ullAvailVirtual
> MAXLONG
) ? MAXLONG
: memstatus
.ullAvailVirtual
;
1394 else /* duplicate NT bug */
1396 lpBuffer
->dwTotalPhys
= (memstatus
.ullTotalPhys
> MAXDWORD
) ? memstatus
.ullTotalPhys
:
1397 (memstatus
.ullTotalPhys
> MAXLONG
) ? MAXLONG
: memstatus
.ullTotalPhys
;
1398 lpBuffer
->dwAvailPhys
= (memstatus
.ullAvailPhys
> MAXDWORD
) ? memstatus
.ullAvailPhys
:
1399 (memstatus
.ullAvailPhys
> MAXLONG
) ? MAXLONG
: memstatus
.ullAvailPhys
;
1400 lpBuffer
->dwTotalPageFile
= (memstatus
.ullTotalPageFile
> MAXDWORD
) ? memstatus
.ullTotalPageFile
:
1401 (memstatus
.ullTotalPageFile
> MAXLONG
) ? MAXLONG
: memstatus
.ullTotalPageFile
;
1402 lpBuffer
->dwAvailPageFile
= (memstatus
.ullAvailPageFile
> MAXDWORD
) ? memstatus
.ullAvailPageFile
:
1403 (memstatus
.ullAvailPageFile
> MAXLONG
) ? MAXLONG
: memstatus
.ullAvailPageFile
;
1404 lpBuffer
->dwTotalVirtual
= (memstatus
.ullTotalVirtual
> MAXDWORD
) ? memstatus
.ullTotalVirtual
:
1405 (memstatus
.ullTotalVirtual
> MAXLONG
) ? MAXLONG
: memstatus
.ullTotalVirtual
;
1406 lpBuffer
->dwAvailVirtual
= (memstatus
.ullAvailVirtual
> MAXDWORD
) ? memstatus
.ullAvailVirtual
:
1407 (memstatus
.ullAvailVirtual
> MAXLONG
) ? MAXLONG
: memstatus
.ullAvailVirtual
;
1410 /* work around for broken photoshop 4 installer */
1411 if ( lpBuffer
->dwAvailPhys
+ lpBuffer
->dwAvailPageFile
>= 2U*1024*1024*1024)
1412 lpBuffer
->dwAvailPageFile
= 2U*1024*1024*1024 - lpBuffer
->dwAvailPhys
- 1;