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"
31 #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>
44 /* FIXME: Unfortunately swapctl can't be used with largefile.... */
45 # undef _FILE_OFFSET_BITS
46 # define _FILE_OFFSET_BITS 32
47 # ifdef HAVE_SYS_RESOURCE_H
48 # include <sys/resource.h>
50 # ifdef HAVE_SYS_STAT_H
51 # include <sys/stat.h>
53 # 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 inline static 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 LPVOID WINAPI
HeapAlloc( HANDLE heap
, DWORD flags
, SIZE_T size
)
273 return RtlAllocateHeap( heap
, flags
, size
);
276 BOOL WINAPI
HeapFree( HANDLE heap
, DWORD flags
, LPVOID ptr
)
278 return RtlFreeHeap( heap
, flags
, ptr
);
281 LPVOID WINAPI
HeapReAlloc( HANDLE heap
, DWORD flags
, LPVOID ptr
, SIZE_T size
)
283 return RtlReAllocateHeap( heap
, flags
, ptr
, size
);
286 SIZE_T WINAPI
HeapSize( HANDLE heap
, DWORD flags
, LPVOID ptr
)
288 return RtlSizeHeap( heap
, flags
, ptr
);
292 * Win32 Global heap functions (GlobalXXX).
293 * These functions included in Win32 for compatibility with 16 bit Windows
294 * Especially the moveable blocks and handles are oldish.
295 * But the ability to directly allocate memory with GPTR and LPTR is widely
298 * The handle stuff looks horrible, but it's implemented almost like Win95
303 #define MAGIC_GLOBAL_USED 0x5342
304 #define HANDLE_TO_INTERN(h) ((PGLOBAL32_INTERN)(((char *)(h))-2))
305 #define INTERN_TO_HANDLE(i) ((HGLOBAL) &((i)->Pointer))
306 #define POINTER_TO_HANDLE(p) (*(((const HGLOBAL *)(p))-2))
307 #define ISHANDLE(h) (((ULONG_PTR)(h)&2)!=0)
308 #define ISPOINTER(h) (((ULONG_PTR)(h)&2)==0)
309 /* align the storage needed for the HGLOBAL on an 8byte boundary thus
310 * GlobalAlloc/GlobalReAlloc'ing with GMEM_MOVEABLE of memory with
311 * size = 8*k, where k=1,2,3,... alloc's exactly the given size.
312 * The Minolta DiMAGE Image Viewer heavily relies on this, corrupting
313 * the output jpeg's > 1 MB if not */
314 #define HGLOBAL_STORAGE 8 /* sizeof(HGLOBAL)*2 */
316 #include "pshpack1.h"
318 typedef struct __GLOBAL32_INTERN
324 } GLOBAL32_INTERN
, *PGLOBAL32_INTERN
;
328 /***********************************************************************
329 * GlobalAlloc (KERNEL32.@)
331 * Allocate a global memory object.
337 HGLOBAL WINAPI
GlobalAlloc(
338 UINT flags
, /* [in] Object allocation attributes */
339 SIZE_T size
/* [in] Number of bytes to allocate */
341 PGLOBAL32_INTERN pintern
;
345 if(flags
&GMEM_ZEROINIT
)
346 hpflags
=HEAP_ZERO_MEMORY
;
350 TRACE("() flags=%04x\n", flags
);
352 if((flags
& GMEM_MOVEABLE
)==0) /* POINTER */
354 palloc
=HeapAlloc(GetProcessHeap(), hpflags
, size
);
355 return (HGLOBAL
) palloc
;
359 RtlLockHeap(GetProcessHeap());
361 pintern
= HeapAlloc(GetProcessHeap(), 0, sizeof(GLOBAL32_INTERN
));
364 pintern
->Magic
= MAGIC_GLOBAL_USED
;
365 pintern
->Flags
= flags
>> 8;
366 pintern
->LockCount
= 0;
370 palloc
= HeapAlloc(GetProcessHeap(), hpflags
, size
+HGLOBAL_STORAGE
);
373 HeapFree(GetProcessHeap(), 0, pintern
);
378 *(HGLOBAL
*)palloc
= INTERN_TO_HANDLE(pintern
);
379 pintern
->Pointer
= (char *)palloc
+ HGLOBAL_STORAGE
;
383 pintern
->Pointer
= NULL
;
386 RtlUnlockHeap(GetProcessHeap());
387 return pintern
? INTERN_TO_HANDLE(pintern
) : 0;
392 /***********************************************************************
393 * GlobalLock (KERNEL32.@)
395 * Lock a global memory object and return a pointer to first byte of the memory
398 * hmem [I] Handle of the global memory object
401 * Success: Pointer to first byte of the memory block
405 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
408 LPVOID WINAPI
GlobalLock(HGLOBAL hmem
)
410 PGLOBAL32_INTERN pintern
;
414 return IsBadReadPtr(hmem
, 1) ? NULL
: hmem
;
416 RtlLockHeap(GetProcessHeap());
419 pintern
= HANDLE_TO_INTERN(hmem
);
420 if (pintern
->Magic
== MAGIC_GLOBAL_USED
)
422 palloc
= pintern
->Pointer
;
423 if (!pintern
->Pointer
)
424 SetLastError(ERROR_DISCARDED
);
425 else if (pintern
->LockCount
< GMEM_LOCKCOUNT
)
426 pintern
->LockCount
++;
430 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem
, pintern
->Magic
);
432 SetLastError(ERROR_INVALID_HANDLE
);
437 WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem
);
439 SetLastError(ERROR_INVALID_HANDLE
);
442 RtlUnlockHeap(GetProcessHeap());
447 /***********************************************************************
448 * GlobalUnlock (KERNEL32.@)
450 * Unlock a global memory object.
453 * hmem [I] Handle of the global memory object
456 * Success: Object is still locked
457 * Failure: FALSE (The Object is unlocked)
460 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
463 BOOL WINAPI
GlobalUnlock(HGLOBAL hmem
)
465 PGLOBAL32_INTERN pintern
;
468 if (ISPOINTER(hmem
)) return FALSE
;
470 RtlLockHeap(GetProcessHeap());
473 pintern
=HANDLE_TO_INTERN(hmem
);
474 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
476 if(pintern
->LockCount
)
478 pintern
->LockCount
--;
479 locked
= (pintern
->LockCount
!= 0);
480 if (!locked
) SetLastError(NO_ERROR
);
484 WARN("%p not locked\n", hmem
);
485 SetLastError(ERROR_NOT_LOCKED
);
491 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem
, pintern
->Magic
);
492 SetLastError(ERROR_INVALID_HANDLE
);
498 WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem
);
499 SetLastError( ERROR_INVALID_PARAMETER
);
503 RtlUnlockHeap(GetProcessHeap());
508 /***********************************************************************
509 * GlobalHandle (KERNEL32.@)
511 * Get the handle associated with the pointer to a global memory block.
517 HGLOBAL WINAPI
GlobalHandle(
518 LPCVOID pmem
/* [in] Pointer to global memory block */
521 PGLOBAL32_INTERN maybe_intern
;
526 SetLastError( ERROR_INVALID_PARAMETER
);
530 RtlLockHeap(GetProcessHeap());
535 /* note that if pmem is a pointer to a a block allocated by */
536 /* GlobalAlloc with GMEM_MOVEABLE then magic test in HeapValidate */
538 if (ISPOINTER(pmem
)) {
539 if (HeapValidate( GetProcessHeap(), 0, pmem
)) {
540 handle
= (HGLOBAL
)pmem
; /* valid fixed block */
543 handle
= POINTER_TO_HANDLE(pmem
);
545 handle
= (HGLOBAL
)pmem
;
547 /* Now test handle either passed in or retrieved from pointer */
548 maybe_intern
= HANDLE_TO_INTERN( handle
);
549 if (maybe_intern
->Magic
== MAGIC_GLOBAL_USED
) {
550 test
= maybe_intern
->Pointer
;
551 if (HeapValidate( GetProcessHeap(), 0, (const char *)test
- HGLOBAL_STORAGE
) && /* obj(-handle) valid arena? */
552 HeapValidate( GetProcessHeap(), 0, maybe_intern
)) /* intern valid arena? */
553 break; /* valid moveable block */
556 SetLastError( ERROR_INVALID_HANDLE
);
560 SetLastError( ERROR_INVALID_HANDLE
);
564 RtlUnlockHeap(GetProcessHeap());
570 /***********************************************************************
571 * GlobalReAlloc (KERNEL32.@)
573 * Change the size or attributes of a global memory object.
579 HGLOBAL WINAPI
GlobalReAlloc(
580 HGLOBAL hmem
, /* [in] Handle of global memory object */
581 SIZE_T size
, /* [in] New size of block */
582 UINT flags
/* [in] How to reallocate object */
586 PGLOBAL32_INTERN pintern
;
587 DWORD heap_flags
= (flags
& GMEM_ZEROINIT
) ? HEAP_ZERO_MEMORY
: 0;
590 RtlLockHeap(GetProcessHeap());
591 if(flags
& GMEM_MODIFY
) /* modify flags */
593 if( ISPOINTER(hmem
) && (flags
& GMEM_MOVEABLE
))
595 /* make a fixed block moveable
596 * actually only NT is able to do this. But it's soo simple
600 WARN("GlobalReAlloc with null handle!\n");
601 SetLastError( ERROR_NOACCESS
);
606 size
= HeapSize(GetProcessHeap(), 0, (LPVOID
)hmem
);
607 hnew
= GlobalAlloc(flags
, size
);
608 palloc
= GlobalLock(hnew
);
609 memcpy(palloc
, (LPVOID
)hmem
, size
);
614 else if( ISPOINTER(hmem
) &&(flags
& GMEM_DISCARDABLE
))
616 /* change the flags to make our block "discardable" */
617 pintern
=HANDLE_TO_INTERN(hmem
);
618 pintern
->Flags
= pintern
->Flags
| (GMEM_DISCARDABLE
>> 8);
623 SetLastError(ERROR_INVALID_PARAMETER
);
631 /* reallocate fixed memory */
632 hnew
=HeapReAlloc(GetProcessHeap(), heap_flags
, hmem
, size
);
636 /* reallocate a moveable block */
637 pintern
=HANDLE_TO_INTERN(hmem
);
640 /* Apparently Windows doesn't care whether the handle is locked at this point */
641 /* See also the same comment in GlobalFree() */
642 if(pintern
->LockCount
>1) {
643 ERR("handle 0x%08lx is still locked, cannot realloc!\n",(DWORD
)hmem
);
644 SetLastError(ERROR_INVALID_HANDLE
);
652 if((palloc
= HeapReAlloc(GetProcessHeap(), heap_flags
,
653 (char *) pintern
->Pointer
-HGLOBAL_STORAGE
,
654 size
+HGLOBAL_STORAGE
)) == NULL
)
655 hnew
= 0; /* Block still valid */
657 pintern
->Pointer
= (char *)palloc
+HGLOBAL_STORAGE
;
661 if((palloc
=HeapAlloc(GetProcessHeap(), heap_flags
, size
+HGLOBAL_STORAGE
))
666 *(HGLOBAL
*)palloc
= hmem
;
667 pintern
->Pointer
= (char *)palloc
+ HGLOBAL_STORAGE
;
673 if (pintern
->LockCount
== 0)
677 HeapFree(GetProcessHeap(), 0, (char *) pintern
->Pointer
-HGLOBAL_STORAGE
);
678 pintern
->Pointer
= NULL
;
683 WARN("not freeing memory associated with locked handle\n");
687 RtlUnlockHeap(GetProcessHeap());
692 /***********************************************************************
693 * GlobalFree (KERNEL32.@)
695 * Free a global memory object.
698 * hmem [I] Handle of the global memory object
702 * Failure: The provided handle
705 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
708 HGLOBAL WINAPI
GlobalFree(HGLOBAL hmem
)
710 PGLOBAL32_INTERN pintern
;
713 RtlLockHeap(GetProcessHeap());
717 if(ISPOINTER(hmem
)) /* POINTER */
719 if(!HeapFree(GetProcessHeap(), 0, (LPVOID
) hmem
)) hmem
= 0;
723 pintern
=HANDLE_TO_INTERN(hmem
);
725 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
727 pintern
->Magic
= 0xdead;
729 /* WIN98 does not make this test. That is you can free a */
730 /* block you have not unlocked. Go figure!! */
731 /* if(pintern->LockCount!=0) */
732 /* SetLastError(ERROR_INVALID_HANDLE); */
735 if(!HeapFree(GetProcessHeap(), 0, (char *)(pintern
->Pointer
)-HGLOBAL_STORAGE
))
737 if(!HeapFree(GetProcessHeap(), 0, pintern
))
742 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem
, pintern
->Magic
);
743 SetLastError(ERROR_INVALID_HANDLE
);
750 ERR("(%p): Page fault occurred ! Caused by bug ?\n", hmem
);
751 SetLastError( ERROR_INVALID_PARAMETER
);
755 RtlUnlockHeap(GetProcessHeap());
760 /***********************************************************************
761 * GlobalSize (KERNEL32.@)
763 * Get the size of a global memory object.
766 * hmem [I] Handle of the global memory object
770 * Success: Size in Bytes of the global memory object
773 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
776 SIZE_T WINAPI
GlobalSize(HGLOBAL hmem
)
779 PGLOBAL32_INTERN pintern
;
785 retval
=HeapSize(GetProcessHeap(), 0, (LPVOID
) hmem
);
789 RtlLockHeap(GetProcessHeap());
790 pintern
=HANDLE_TO_INTERN(hmem
);
792 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
794 if (!pintern
->Pointer
) /* handle case of GlobalAlloc( ??,0) */
798 retval
= HeapSize(GetProcessHeap(), 0,
799 (char *)(pintern
->Pointer
) - HGLOBAL_STORAGE
);
800 if (retval
!= (DWORD
)-1) retval
-= HGLOBAL_STORAGE
;
805 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem
, pintern
->Magic
);
806 SetLastError(ERROR_INVALID_HANDLE
);
809 RtlUnlockHeap(GetProcessHeap());
811 /* HeapSize returns 0xffffffff on failure */
812 if (retval
== 0xffffffff) retval
= 0;
817 /***********************************************************************
818 * GlobalWire (KERNEL32.@)
820 LPVOID WINAPI
GlobalWire(HGLOBAL hmem
)
822 return GlobalLock( hmem
);
826 /***********************************************************************
827 * GlobalUnWire (KERNEL32.@)
829 BOOL WINAPI
GlobalUnWire(HGLOBAL hmem
)
831 return GlobalUnlock( hmem
);
835 /***********************************************************************
836 * GlobalFix (KERNEL32.@)
838 VOID WINAPI
GlobalFix(HGLOBAL hmem
)
844 /***********************************************************************
845 * GlobalUnfix (KERNEL32.@)
847 VOID WINAPI
GlobalUnfix(HGLOBAL hmem
)
853 /***********************************************************************
854 * GlobalFlags (KERNEL32.@)
856 * Get information about a global memory object.
859 * hmem [I] Handle of the global memory object
862 * Failure: GMEM_INVALID_HANDLE, when the provided handle is invalid
863 * Success: Value specifying allocation flags and lock count
866 UINT WINAPI
GlobalFlags(HGLOBAL hmem
)
869 PGLOBAL32_INTERN pintern
;
877 RtlLockHeap(GetProcessHeap());
878 pintern
=HANDLE_TO_INTERN(hmem
);
879 if(pintern
->Magic
==MAGIC_GLOBAL_USED
)
881 retval
=pintern
->LockCount
+ (pintern
->Flags
<<8);
882 if(pintern
->Pointer
==0)
883 retval
|= GMEM_DISCARDED
;
887 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem
, pintern
->Magic
);
888 SetLastError(ERROR_INVALID_HANDLE
);
889 retval
= GMEM_INVALID_HANDLE
;
891 RtlUnlockHeap(GetProcessHeap());
897 /***********************************************************************
898 * GlobalCompact (KERNEL32.@)
900 SIZE_T WINAPI
GlobalCompact( DWORD minfree
)
902 return 0; /* GlobalCompact does nothing in Win32 */
906 /***********************************************************************
907 * LocalAlloc (KERNEL32.@)
909 * Allocate a local memory object.
916 * Windows memory management does not provide a separate local heap
919 HLOCAL WINAPI
LocalAlloc(
920 UINT flags
, /* [in] Allocation attributes */
921 SIZE_T size
/* [in] Number of bytes to allocate */
923 return (HLOCAL
)GlobalAlloc( flags
, size
);
927 /***********************************************************************
928 * LocalCompact (KERNEL32.@)
930 SIZE_T WINAPI
LocalCompact( UINT minfree
)
932 return 0; /* LocalCompact does nothing in Win32 */
936 /***********************************************************************
937 * LocalFlags (KERNEL32.@)
939 * Get information about a local memory object.
942 * Value specifying allocation flags and lock count.
943 * LMEM_INVALID_HANDLE: Failure
946 * Windows memory management does not provide a separate local heap
949 UINT WINAPI
LocalFlags(
950 HLOCAL handle
/* [in] Handle of memory object */
952 return GlobalFlags( (HGLOBAL
)handle
);
956 /***********************************************************************
957 * LocalFree (KERNEL32.@)
959 * Free a local memory object.
966 * Windows memory management does not provide a separate local heap
969 HLOCAL WINAPI
LocalFree(
970 HLOCAL handle
/* [in] Handle of memory object */
972 return (HLOCAL
)GlobalFree( (HGLOBAL
)handle
);
976 /***********************************************************************
977 * LocalHandle (KERNEL32.@)
979 * Get the handle associated with the pointer to a local memory block.
986 * Windows memory management does not provide a separate local heap
989 HLOCAL WINAPI
LocalHandle(
990 LPCVOID ptr
/* [in] Address of local memory block */
992 return (HLOCAL
)GlobalHandle( ptr
);
996 /***********************************************************************
997 * LocalLock (KERNEL32.@)
998 * Locks a local memory object and returns pointer to the first byte
999 * of the memory block.
1006 * Windows memory management does not provide a separate local heap
1009 LPVOID WINAPI
LocalLock(
1010 HLOCAL handle
/* [in] Address of local memory object */
1012 return GlobalLock( (HGLOBAL
)handle
);
1016 /***********************************************************************
1017 * LocalReAlloc (KERNEL32.@)
1019 * Change the size or attributes of a local memory object.
1026 * Windows memory management does not provide a separate local heap
1029 HLOCAL WINAPI
LocalReAlloc(
1030 HLOCAL handle
, /* [in] Handle of memory object */
1031 SIZE_T size
, /* [in] New size of block */
1032 UINT flags
/* [in] How to reallocate object */
1034 return (HLOCAL
)GlobalReAlloc( (HGLOBAL
)handle
, size
, flags
);
1038 /***********************************************************************
1039 * LocalShrink (KERNEL32.@)
1041 SIZE_T WINAPI
LocalShrink( HGLOBAL handle
, UINT newsize
)
1043 return 0; /* LocalShrink does nothing in Win32 */
1047 /***********************************************************************
1048 * LocalSize (KERNEL32.@)
1050 * Get the size of a local memory object.
1057 * Windows memory management does not provide a separate local heap
1060 SIZE_T WINAPI
LocalSize(
1061 HLOCAL handle
/* [in] Handle of memory object */
1063 return GlobalSize( (HGLOBAL
)handle
);
1067 /***********************************************************************
1068 * LocalUnlock (KERNEL32.@)
1070 * Unlock a local memory object.
1073 * TRUE: Object is still locked
1074 * FALSE: Object is unlocked
1077 * Windows memory management does not provide a separate local heap
1080 BOOL WINAPI
LocalUnlock(
1081 HLOCAL handle
/* [in] Handle of memory object */
1083 return GlobalUnlock( (HGLOBAL
)handle
);
1087 /**********************************************************************
1088 * AllocMappedBuffer (KERNEL32.38)
1090 * This is an undocumented KERNEL32 function that
1091 * SMapLS's a GlobalAlloc'ed buffer.
1094 * EDI register: pointer to buffer
1097 * The buffer is preceded by 8 bytes:
1100 * edi-4 SEGPTR to buffer
1101 * edi-8 some magic Win95 needs for SUnMapLS
1102 * (we use it for the memory handle)
1104 * The SEGPTR is used by the caller!
1106 void WINAPI
__regs_AllocMappedBuffer(
1107 CONTEXT86
*context
/* [in] EDI register: size of buffer to allocate */
1109 HGLOBAL handle
= GlobalAlloc(0, context
->Edi
+ 8);
1110 DWORD
*buffer
= (DWORD
*)GlobalLock(handle
);
1114 if (!(ptr
= MapLS(buffer
+ 2)))
1116 GlobalUnlock(handle
);
1121 context
->Eax
= context
->Edi
= 0;
1124 buffer
[0] = (DWORD
)handle
;
1127 context
->Eax
= (DWORD
) ptr
;
1128 context
->Edi
= (DWORD
)(buffer
+ 2);
1131 #ifdef DEFINE_REGS_ENTRYPOINT
1132 DEFINE_REGS_ENTRYPOINT( AllocMappedBuffer
, 0, 0 );
1135 /**********************************************************************
1136 * FreeMappedBuffer (KERNEL32.39)
1138 * Free a buffer allocated by AllocMappedBuffer
1143 void WINAPI
__regs_FreeMappedBuffer(
1144 CONTEXT86
*context
/* [in] EDI register: pointer to buffer */
1148 DWORD
*buffer
= (DWORD
*)context
->Edi
- 2;
1152 GlobalUnlock((HGLOBAL
)buffer
[0]);
1153 GlobalFree((HGLOBAL
)buffer
[0]);
1156 #ifdef DEFINE_REGS_ENTRYPOINT
1157 DEFINE_REGS_ENTRYPOINT( FreeMappedBuffer
, 0, 0 );
1160 /***********************************************************************
1161 * GlobalMemoryStatusEx (KERNEL32.@)
1162 * A version of GlobalMemoryStatus that can deal with memory over 4GB
1167 BOOL WINAPI
GlobalMemoryStatusEx( LPMEMORYSTATUSEX lpmemex
)
1169 static MEMORYSTATUSEX cached_memstatus
;
1170 static int cache_lastchecked
= 0;
1174 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
1176 int size_sys
, mib
[2];
1177 #elif defined(__APPLE__)
1182 unsigned long pagesize
,maxpages
,freepages
,swapspace
,swapfree
;
1183 struct anoninfo swapinf
;
1187 if (time(NULL
)==cache_lastchecked
) {
1188 memcpy(lpmemex
,&cached_memstatus
,sizeof(*lpmemex
));
1191 cache_lastchecked
= time(NULL
);
1193 lpmemex
->dwLength
= sizeof(*lpmemex
);
1194 lpmemex
->dwMemoryLoad
= 0;
1195 lpmemex
->ullTotalPhys
= 16*1024*1024;
1196 lpmemex
->ullAvailPhys
= 16*1024*1024;
1197 lpmemex
->ullTotalPageFile
= 16*1024*1024;
1198 lpmemex
->ullAvailPageFile
= 16*1024*1024;
1201 f
= fopen( "/proc/meminfo", "r" );
1205 unsigned long total
, used
, free
, shared
, buffers
, cached
;
1207 lpmemex
->ullTotalPhys
= lpmemex
->ullAvailPhys
= 0;
1208 lpmemex
->ullTotalPageFile
= lpmemex
->ullAvailPageFile
= 0;
1209 while (fgets( buffer
, sizeof(buffer
), f
))
1211 /* old style /proc/meminfo ... */
1212 if (sscanf( buffer
, "Mem: %lu %lu %lu %lu %lu %lu",
1213 &total
, &used
, &free
, &shared
, &buffers
, &cached
))
1215 lpmemex
->ullTotalPhys
+= total
;
1216 lpmemex
->ullAvailPhys
+= free
+ buffers
+ cached
;
1218 if (sscanf( buffer
, "Swap: %lu %lu %lu", &total
, &used
, &free
))
1220 lpmemex
->ullTotalPageFile
+= total
;
1221 lpmemex
->ullAvailPageFile
+= free
;
1224 /* new style /proc/meminfo ... */
1225 if (sscanf(buffer
, "MemTotal: %lu", &total
))
1226 lpmemex
->ullTotalPhys
= total
*1024;
1227 if (sscanf(buffer
, "MemFree: %lu", &free
))
1228 lpmemex
->ullAvailPhys
= free
*1024;
1229 if (sscanf(buffer
, "SwapTotal: %lu", &total
))
1230 lpmemex
->ullTotalPageFile
= total
*1024;
1231 if (sscanf(buffer
, "SwapFree: %lu", &free
))
1232 lpmemex
->ullAvailPageFile
= free
*1024;
1233 if (sscanf(buffer
, "Buffers: %lu", &buffers
))
1234 lpmemex
->ullAvailPhys
+= buffers
*1024;
1235 if (sscanf(buffer
, "Cached: %lu", &cached
))
1236 lpmemex
->ullAvailPhys
+= cached
*1024;
1240 if (lpmemex
->ullTotalPhys
)
1242 DWORDLONG TotalPhysical
= lpmemex
->ullTotalPhys
+lpmemex
->ullTotalPageFile
;
1243 DWORDLONG AvailPhysical
= lpmemex
->ullAvailPhys
+lpmemex
->ullAvailPageFile
;
1244 lpmemex
->dwMemoryLoad
= (TotalPhysical
-AvailPhysical
)
1245 / (TotalPhysical
/ 100);
1248 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__APPLE__)
1250 mib
[1] = HW_PHYSMEM
;
1251 size_sys
= sizeof(val
);
1252 sysctl(mib
, 2, &val
, &size_sys
, NULL
, 0);
1253 if (val
) lpmemex
->ullTotalPhys
= val
;
1254 mib
[1] = HW_USERMEM
;
1255 size_sys
= sizeof(val
);
1256 sysctl(mib
, 2, &val
, &size_sys
, NULL
, 0);
1257 if (!val
) val
= lpmemex
->ullTotalPhys
;
1258 lpmemex
->ullAvailPhys
= val
;
1259 lpmemex
->ullTotalPageFile
= val
;
1260 lpmemex
->ullAvailPageFile
= val
;
1261 lpmemex
->dwMemoryLoad
= lpmemex
->ullTotalPhys
- lpmemex
->ullAvailPhys
;
1262 #elif defined ( sun )
1263 pagesize
=sysconf(_SC_PAGESIZE
);
1264 maxpages
=sysconf(_SC_PHYS_PAGES
);
1265 freepages
=sysconf(_SC_AVPHYS_PAGES
);
1266 rval
=swapctl(SC_AINFO
, &swapinf
);
1269 swapspace
=swapinf
.ani_max
*pagesize
;
1270 swapfree
=swapinf
.ani_free
*pagesize
;
1274 WARN("Swap size cannot be determined , assuming equal to physical memory\n");
1275 swapspace
=maxpages
*pagesize
;
1276 swapfree
=maxpages
*pagesize
;
1278 lpmemex
->ullTotalPhys
=pagesize
*maxpages
;
1279 lpmemex
->ullAvailPhys
= pagesize
*freepages
;
1280 lpmemex
->ullTotalPageFile
= swapspace
;
1281 lpmemex
->ullAvailPageFile
= swapfree
;
1282 lpmemex
->dwMemoryLoad
= lpmemex
->ullTotalPhys
- lpmemex
->ullAvailPhys
;
1285 /* Project2k refuses to start if it sees less than 1Mb of free swap */
1286 if (lpmemex
->ullTotalPageFile
< lpmemex
->ullTotalPhys
)
1287 lpmemex
->ullTotalPageFile
= lpmemex
->ullTotalPhys
;
1288 if (lpmemex
->ullAvailPageFile
< lpmemex
->ullAvailPhys
)
1289 lpmemex
->ullAvailPageFile
= lpmemex
->ullAvailPhys
;
1291 /* FIXME: should do something for other systems */
1293 lpmemex
->ullTotalVirtual
= (char*)si
.lpMaximumApplicationAddress
-(char*)si
.lpMinimumApplicationAddress
;
1294 /* FIXME: we should track down all the already allocated VM pages and substract them, for now arbitrarily remove 64KB so that it matches NT */
1295 lpmemex
->ullAvailVirtual
= lpmemex
->ullTotalVirtual
-64*1024;
1297 /* MSDN says about AvailExtendedVirtual: Size of unreserved and uncommitted
1298 memory in the extended portion of the virtual address space of the calling
1300 However, I don't know what this means, so set it to zero :(
1302 lpmemex
->ullAvailExtendedVirtual
= 0;
1304 memcpy(&cached_memstatus
,lpmemex
,sizeof(*lpmemex
));
1306 TRACE("<-- LPMEMORYSTATUSEX: dwLength %ld, dwMemoryLoad %ld, ullTotalPhys %s, ullAvailPhys %s,"
1307 " ullTotalPageFile %s, ullAvailPageFile %s, ullTotalVirtual %s, ullAvailVirtual %s\n",
1308 lpmemex
->dwLength
, lpmemex
->dwMemoryLoad
, wine_dbgstr_longlong(lpmemex
->ullTotalPhys
),
1309 wine_dbgstr_longlong(lpmemex
->ullAvailPhys
), wine_dbgstr_longlong(lpmemex
->ullTotalPageFile
),
1310 wine_dbgstr_longlong(lpmemex
->ullAvailPageFile
), wine_dbgstr_longlong(lpmemex
->ullTotalVirtual
),
1311 wine_dbgstr_longlong(lpmemex
->ullAvailVirtual
) );
1316 /***********************************************************************
1317 * GlobalMemoryStatus (KERNEL32.@)
1318 * Provides information about the status of the memory, so apps can tell
1319 * roughly how much they are able to allocate
1324 VOID WINAPI
GlobalMemoryStatus( LPMEMORYSTATUS lpBuffer
)
1326 MEMORYSTATUSEX memstatus
;
1327 OSVERSIONINFOW osver
;
1329 /* Because GlobalMemoryStatus is identical to GlobalMemoryStatusEX save
1330 for one extra field in the struct, and the lack of a bug, we simply
1331 call GlobalMemoryStatusEx and copy the values across. */
1332 GlobalMemoryStatusEx(&memstatus
);
1334 lpBuffer
->dwLength
= sizeof(*lpBuffer
);
1335 lpBuffer
->dwMemoryLoad
= memstatus
.dwMemoryLoad
;
1337 /* Windows 2000 and later report -1 when values are greater than 4 Gb.
1338 * NT reports values modulo 4 Gb.
1339 * Values between 2 Gb and 4 Gb are rounded down to 2 Gb.
1342 osver
.dwOSVersionInfoSize
= sizeof(osver
);
1343 GetVersionExW(&osver
);
1345 if ( osver
.dwMajorVersion
>= 5 )
1347 lpBuffer
->dwTotalPhys
= (memstatus
.ullTotalPhys
> MAXDWORD
) ? MAXDWORD
:
1348 (memstatus
.ullTotalPhys
> MAXLONG
) ? MAXLONG
: memstatus
.ullTotalPhys
;
1349 lpBuffer
->dwAvailPhys
= (memstatus
.ullAvailPhys
> MAXDWORD
) ? MAXDWORD
:
1350 (memstatus
.ullAvailPhys
> MAXLONG
) ? MAXLONG
: memstatus
.ullAvailPhys
;
1351 lpBuffer
->dwTotalPageFile
= (memstatus
.ullTotalPageFile
> MAXDWORD
) ? MAXDWORD
:
1352 (memstatus
.ullTotalPageFile
> MAXLONG
) ? MAXLONG
: memstatus
.ullTotalPageFile
;
1353 lpBuffer
->dwAvailPageFile
= (memstatus
.ullAvailPageFile
> MAXDWORD
) ? MAXDWORD
:
1354 (memstatus
.ullAvailPageFile
> MAXLONG
) ? MAXLONG
: memstatus
.ullAvailPageFile
;
1355 lpBuffer
->dwTotalVirtual
= (memstatus
.ullTotalVirtual
> MAXDWORD
) ? MAXDWORD
:
1356 (memstatus
.ullTotalVirtual
> MAXLONG
) ? MAXLONG
: memstatus
.ullTotalVirtual
;
1357 lpBuffer
->dwAvailVirtual
= (memstatus
.ullAvailVirtual
> MAXDWORD
) ? MAXDWORD
:
1358 (memstatus
.ullAvailVirtual
> MAXLONG
) ? MAXLONG
: memstatus
.ullAvailVirtual
;
1360 else /* duplicate NT bug */
1362 lpBuffer
->dwTotalPhys
= (memstatus
.ullTotalPhys
> MAXDWORD
) ? memstatus
.ullTotalPhys
:
1363 (memstatus
.ullTotalPhys
> MAXLONG
) ? MAXLONG
: memstatus
.ullTotalPhys
;
1364 lpBuffer
->dwAvailPhys
= (memstatus
.ullAvailPhys
> MAXDWORD
) ? memstatus
.ullAvailPhys
:
1365 (memstatus
.ullAvailPhys
> MAXLONG
) ? MAXLONG
: memstatus
.ullAvailPhys
;
1366 lpBuffer
->dwTotalPageFile
= (memstatus
.ullTotalPageFile
> MAXDWORD
) ? memstatus
.ullTotalPageFile
:
1367 (memstatus
.ullTotalPageFile
> MAXLONG
) ? MAXLONG
: memstatus
.ullTotalPageFile
;
1368 lpBuffer
->dwAvailPageFile
= (memstatus
.ullAvailPageFile
> MAXDWORD
) ? memstatus
.ullAvailPageFile
:
1369 (memstatus
.ullAvailPageFile
> MAXLONG
) ? MAXLONG
: memstatus
.ullAvailPageFile
;
1370 lpBuffer
->dwTotalVirtual
= (memstatus
.ullTotalVirtual
> MAXDWORD
) ? memstatus
.ullTotalVirtual
:
1371 (memstatus
.ullTotalVirtual
> MAXLONG
) ? MAXLONG
: memstatus
.ullTotalVirtual
;
1372 lpBuffer
->dwAvailVirtual
= (memstatus
.ullAvailVirtual
> MAXDWORD
) ? memstatus
.ullAvailVirtual
:
1373 (memstatus
.ullAvailVirtual
> MAXLONG
) ? MAXLONG
: memstatus
.ullAvailVirtual
;
1376 /* work around for broken photoshop 4 installer */
1377 if ( lpBuffer
->dwAvailPhys
+ lpBuffer
->dwAvailPageFile
>= 2U*1024*1024*1024)
1378 lpBuffer
->dwAvailPageFile
= 2U*1024*1024*1024 - lpBuffer
->dwAvailPhys
- 1;