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 );
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) (&((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 (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 if((flags & GMEM_MOVEABLE)==0) /* POINTER */
361 palloc=HeapAlloc(GetProcessHeap(), hpflags, size);
362 TRACE( "(flags=%04x) returning %p\n", flags, palloc );
367 if (size > INT_MAX-HGLOBAL_STORAGE)
369 SetLastError(ERROR_OUTOFMEMORY);
373 RtlLockHeap(GetProcessHeap());
375 pintern = HeapAlloc(GetProcessHeap(), 0, sizeof(GLOBAL32_INTERN));
378 /* Mask out obsolete flags */
379 flags &= ~(GMEM_LOWER | GMEM_NOCOMPACT | GMEM_NOT_BANKED | GMEM_NOTIFY);
381 pintern->Magic = MAGIC_GLOBAL_USED;
382 pintern->Flags = flags >> 8;
383 pintern->LockCount = 0;
387 palloc = HeapAlloc(GetProcessHeap(), hpflags, size+HGLOBAL_STORAGE);
390 HeapFree(GetProcessHeap(), 0, pintern);
395 *(HGLOBAL *)palloc = INTERN_TO_HANDLE(pintern);
396 pintern->Pointer = (char *)palloc + HGLOBAL_STORAGE;
400 pintern->Pointer = NULL;
403 RtlUnlockHeap(GetProcessHeap());
404 if (!pintern) return 0;
405 TRACE( "(flags=%04x) returning handle %p pointer %p\n",
406 flags, INTERN_TO_HANDLE(pintern), pintern->Pointer );
407 return INTERN_TO_HANDLE(pintern);
412 /***********************************************************************
413 * GlobalLock (KERNEL32.@)
415 * Lock a global memory object and return a pointer to first byte of the memory
418 * hmem [I] Handle of the global memory object
421 * Success: Pointer to first byte of the memory block
425 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
428 LPVOID WINAPI GlobalLock(HGLOBAL hmem)
430 PGLOBAL32_INTERN pintern;
434 return IsBadReadPtr(hmem, 1) ? NULL : hmem;
436 RtlLockHeap(GetProcessHeap());
439 pintern = HANDLE_TO_INTERN(hmem);
440 if (pintern->Magic == MAGIC_GLOBAL_USED)
442 palloc = pintern->Pointer;
443 if (!pintern->Pointer)
444 SetLastError(ERROR_DISCARDED);
445 else if (pintern->LockCount < GMEM_LOCKCOUNT)
446 pintern->LockCount++;
450 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
452 SetLastError(ERROR_INVALID_HANDLE);
457 WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
459 SetLastError(ERROR_INVALID_HANDLE);
462 RtlUnlockHeap(GetProcessHeap());
467 /***********************************************************************
468 * GlobalUnlock (KERNEL32.@)
470 * Unlock a global memory object.
473 * hmem [I] Handle of the global memory object
476 * Success: Object is still locked
477 * Failure: FALSE (The Object is unlocked)
480 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
483 BOOL WINAPI GlobalUnlock(HGLOBAL hmem)
485 PGLOBAL32_INTERN pintern;
488 if (ISPOINTER(hmem)) return TRUE;
490 RtlLockHeap(GetProcessHeap());
493 pintern=HANDLE_TO_INTERN(hmem);
494 if(pintern->Magic==MAGIC_GLOBAL_USED)
496 if(pintern->LockCount)
498 pintern->LockCount--;
499 locked = (pintern->LockCount != 0);
500 if (!locked) SetLastError(NO_ERROR);
504 WARN("%p not locked\n", hmem);
505 SetLastError(ERROR_NOT_LOCKED);
511 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
512 SetLastError(ERROR_INVALID_HANDLE);
518 WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
519 SetLastError( ERROR_INVALID_PARAMETER );
523 RtlUnlockHeap(GetProcessHeap());
528 /***********************************************************************
529 * GlobalHandle (KERNEL32.@)
531 * Get the handle associated with the pointer to a global memory block.
537 HGLOBAL WINAPI GlobalHandle(
538 LPCVOID pmem /* [in] Pointer to global memory block */
541 PGLOBAL32_INTERN maybe_intern;
546 SetLastError( ERROR_INVALID_PARAMETER );
550 RtlLockHeap(GetProcessHeap());
555 /* note that if pmem is a pointer to a block allocated by */
556 /* GlobalAlloc with GMEM_MOVEABLE then magic test in HeapValidate */
558 if (ISPOINTER(pmem)) {
559 if (HeapValidate( GetProcessHeap(), 0, pmem )) {
560 handle = (HGLOBAL)pmem; /* valid fixed block */
563 handle = POINTER_TO_HANDLE(pmem);
565 handle = (HGLOBAL)pmem;
567 /* Now test handle either passed in or retrieved from pointer */
568 maybe_intern = HANDLE_TO_INTERN( handle );
569 if (maybe_intern->Magic == MAGIC_GLOBAL_USED) {
570 test = maybe_intern->Pointer;
571 if (HeapValidate( GetProcessHeap(), 0, (const char *)test - HGLOBAL_STORAGE ) && /* obj(-handle) valid arena? */
572 HeapValidate( GetProcessHeap(), 0, maybe_intern )) /* intern valid arena? */
573 break; /* valid moveable block */
576 SetLastError( ERROR_INVALID_HANDLE );
580 SetLastError( ERROR_INVALID_HANDLE );
584 RtlUnlockHeap(GetProcessHeap());
590 /***********************************************************************
591 * GlobalReAlloc (KERNEL32.@)
593 * Change the size or attributes of a global memory object.
599 HGLOBAL WINAPI GlobalReAlloc(
600 HGLOBAL hmem, /* [in] Handle of global memory object */
601 SIZE_T size, /* [in] New size of block */
602 UINT flags /* [in] How to reallocate object */
606 PGLOBAL32_INTERN pintern;
607 DWORD heap_flags = (flags & GMEM_ZEROINIT) ? HEAP_ZERO_MEMORY : 0;
610 RtlLockHeap(GetProcessHeap());
611 if(flags & GMEM_MODIFY) /* modify flags */
613 if( ISPOINTER(hmem) && (flags & GMEM_MOVEABLE))
615 /* make a fixed block moveable
616 * actually only NT is able to do this. But it's soo simple
620 WARN("GlobalReAlloc with null handle!\n");
621 SetLastError( ERROR_NOACCESS );
626 size = HeapSize(GetProcessHeap(), 0, hmem);
627 hnew = GlobalAlloc(flags, size);
628 palloc = GlobalLock(hnew);
629 memcpy(palloc, hmem, size);
634 else if( ISPOINTER(hmem) &&(flags & GMEM_DISCARDABLE))
636 /* change the flags to make our block "discardable" */
637 pintern=HANDLE_TO_INTERN(hmem);
638 pintern->Flags = pintern->Flags | (GMEM_DISCARDABLE >> 8);
643 SetLastError(ERROR_INVALID_PARAMETER);
651 /* reallocate fixed memory */
652 hnew=HeapReAlloc(GetProcessHeap(), heap_flags, hmem, size);
656 /* reallocate a moveable block */
657 pintern=HANDLE_TO_INTERN(hmem);
660 /* Apparently Windows doesn't care whether the handle is locked at this point */
661 /* See also the same comment in GlobalFree() */
662 if(pintern->LockCount>1) {
663 ERR("handle 0x%08lx is still locked, cannot realloc!\n",(DWORD)hmem);
664 SetLastError(ERROR_INVALID_HANDLE);
672 if(size > INT_MAX-HGLOBAL_STORAGE)
674 SetLastError(ERROR_OUTOFMEMORY);
677 else if((palloc = HeapReAlloc(GetProcessHeap(), heap_flags,
678 (char *) pintern->Pointer-HGLOBAL_STORAGE,
679 size+HGLOBAL_STORAGE)) == NULL)
680 hnew = 0; /* Block still valid */
682 pintern->Pointer = (char *)palloc+HGLOBAL_STORAGE;
686 if(size > INT_MAX-HGLOBAL_STORAGE)
688 SetLastError(ERROR_OUTOFMEMORY);
691 else if((palloc=HeapAlloc(GetProcessHeap(), heap_flags, size+HGLOBAL_STORAGE))
696 *(HGLOBAL *)palloc = hmem;
697 pintern->Pointer = (char *)palloc + HGLOBAL_STORAGE;
703 if (pintern->LockCount == 0)
707 HeapFree(GetProcessHeap(), 0, (char *) pintern->Pointer-HGLOBAL_STORAGE);
708 pintern->Pointer = NULL;
713 WARN("not freeing memory associated with locked handle\n");
717 RtlUnlockHeap(GetProcessHeap());
722 /***********************************************************************
723 * GlobalFree (KERNEL32.@)
725 * Free a global memory object.
728 * hmem [I] Handle of the global memory object
732 * Failure: The provided handle
735 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
738 HGLOBAL WINAPI GlobalFree(HGLOBAL hmem)
740 PGLOBAL32_INTERN pintern;
743 RtlLockHeap(GetProcessHeap());
747 if(ISPOINTER(hmem)) /* POINTER */
749 if(!HeapFree(GetProcessHeap(), 0, hmem))
751 SetLastError(ERROR_INVALID_HANDLE);
757 pintern=HANDLE_TO_INTERN(hmem);
759 if(pintern->Magic==MAGIC_GLOBAL_USED)
761 pintern->Magic = 0xdead;
763 /* WIN98 does not make this test. That is you can free a */
764 /* block you have not unlocked. Go figure!! */
765 /* if(pintern->LockCount!=0) */
766 /* SetLastError(ERROR_INVALID_HANDLE); */
769 if(!HeapFree(GetProcessHeap(), 0, (char *)(pintern->Pointer)-HGLOBAL_STORAGE))
771 if(!HeapFree(GetProcessHeap(), 0, pintern))
776 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
777 SetLastError(ERROR_INVALID_HANDLE);
784 ERR("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
785 SetLastError( ERROR_INVALID_PARAMETER );
789 RtlUnlockHeap(GetProcessHeap());
794 /***********************************************************************
795 * GlobalSize (KERNEL32.@)
797 * Get the size of a global memory object.
800 * hmem [I] Handle of the global memory object
804 * Success: Size in Bytes of the global memory object
807 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
810 SIZE_T WINAPI GlobalSize(HGLOBAL hmem)
813 PGLOBAL32_INTERN pintern;
815 if (!((ULONG_PTR)hmem >> 16))
817 SetLastError(ERROR_INVALID_HANDLE);
823 retval=HeapSize(GetProcessHeap(), 0, hmem);
827 RtlLockHeap(GetProcessHeap());
828 pintern=HANDLE_TO_INTERN(hmem);
830 if(pintern->Magic==MAGIC_GLOBAL_USED)
832 if (!pintern->Pointer) /* handle case of GlobalAlloc( ??,0) */
836 retval = HeapSize(GetProcessHeap(), 0,
837 (char *)(pintern->Pointer) - HGLOBAL_STORAGE );
838 if (retval != (DWORD)-1) retval -= HGLOBAL_STORAGE;
843 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
844 SetLastError(ERROR_INVALID_HANDLE);
847 RtlUnlockHeap(GetProcessHeap());
849 /* HeapSize returns 0xffffffff on failure */
850 if (retval == 0xffffffff) retval = 0;
855 /***********************************************************************
856 * GlobalWire (KERNEL32.@)
858 LPVOID WINAPI GlobalWire(HGLOBAL hmem)
860 return GlobalLock( hmem );
864 /***********************************************************************
865 * GlobalUnWire (KERNEL32.@)
867 BOOL WINAPI GlobalUnWire(HGLOBAL hmem)
869 return GlobalUnlock( hmem);
873 /***********************************************************************
874 * GlobalFix (KERNEL32.@)
876 VOID WINAPI GlobalFix(HGLOBAL hmem)
882 /***********************************************************************
883 * GlobalUnfix (KERNEL32.@)
885 VOID WINAPI GlobalUnfix(HGLOBAL hmem)
891 /***********************************************************************
892 * GlobalFlags (KERNEL32.@)
894 * Get information about a global memory object.
897 * hmem [I] Handle of the global memory object
900 * Failure: GMEM_INVALID_HANDLE, when the provided handle is invalid
901 * Success: Value specifying allocation flags and lock count
904 UINT WINAPI GlobalFlags(HGLOBAL hmem)
907 PGLOBAL32_INTERN pintern;
915 RtlLockHeap(GetProcessHeap());
916 pintern=HANDLE_TO_INTERN(hmem);
917 if(pintern->Magic==MAGIC_GLOBAL_USED)
919 retval=pintern->LockCount + (pintern->Flags<<8);
920 if(pintern->Pointer==0)
921 retval|= GMEM_DISCARDED;
925 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
926 SetLastError(ERROR_INVALID_HANDLE);
927 retval = GMEM_INVALID_HANDLE;
929 RtlUnlockHeap(GetProcessHeap());
935 /***********************************************************************
936 * GlobalCompact (KERNEL32.@)
938 SIZE_T WINAPI GlobalCompact( DWORD minfree )
940 return 0; /* GlobalCompact does nothing in Win32 */
944 /***********************************************************************
945 * LocalAlloc (KERNEL32.@)
947 * Allocate a local memory object.
954 * Windows memory management does not provide a separate local heap
957 HLOCAL WINAPI LocalAlloc(
958 UINT flags, /* [in] Allocation attributes */
959 SIZE_T size /* [in] Number of bytes to allocate */
961 return GlobalAlloc( flags, size );
965 /***********************************************************************
966 * LocalCompact (KERNEL32.@)
968 SIZE_T WINAPI LocalCompact( UINT minfree )
970 return 0; /* LocalCompact does nothing in Win32 */
974 /***********************************************************************
975 * LocalFlags (KERNEL32.@)
977 * Get information about a local memory object.
980 * Value specifying allocation flags and lock count.
981 * LMEM_INVALID_HANDLE: Failure
984 * Windows memory management does not provide a separate local heap
987 UINT WINAPI LocalFlags(
988 HLOCAL handle /* [in] Handle of memory object */
990 return GlobalFlags( handle );
994 /***********************************************************************
995 * LocalFree (KERNEL32.@)
997 * Free a local memory object.
1004 * Windows memory management does not provide a separate local heap
1007 HLOCAL WINAPI LocalFree(
1008 HLOCAL handle /* [in] Handle of memory object */
1010 return GlobalFree( handle );
1014 /***********************************************************************
1015 * LocalHandle (KERNEL32.@)
1017 * Get the handle associated with the pointer to a local memory block.
1024 * Windows memory management does not provide a separate local heap
1027 HLOCAL WINAPI LocalHandle(
1028 LPCVOID ptr /* [in] Address of local memory block */
1030 return GlobalHandle( ptr );
1034 /***********************************************************************
1035 * LocalLock (KERNEL32.@)
1036 * Locks a local memory object and returns pointer to the first byte
1037 * of the memory block.
1044 * Windows memory management does not provide a separate local heap
1047 LPVOID WINAPI LocalLock(
1048 HLOCAL handle /* [in] Address of local memory object */
1050 return GlobalLock( handle );
1054 /***********************************************************************
1055 * LocalReAlloc (KERNEL32.@)
1057 * Change the size or attributes of a local memory object.
1064 * Windows memory management does not provide a separate local heap
1067 HLOCAL WINAPI LocalReAlloc(
1068 HLOCAL handle, /* [in] Handle of memory object */
1069 SIZE_T size, /* [in] New size of block */
1070 UINT flags /* [in] How to reallocate object */
1072 return GlobalReAlloc( handle, size, flags );
1076 /***********************************************************************
1077 * LocalShrink (KERNEL32.@)
1079 SIZE_T WINAPI LocalShrink( HGLOBAL handle, UINT newsize )
1081 return 0; /* LocalShrink does nothing in Win32 */
1085 /***********************************************************************
1086 * LocalSize (KERNEL32.@)
1088 * Get the size of a local memory object.
1095 * Windows memory management does not provide a separate local heap
1098 SIZE_T WINAPI LocalSize(
1099 HLOCAL handle /* [in] Handle of memory object */
1101 return GlobalSize( handle );
1105 /***********************************************************************
1106 * LocalUnlock (KERNEL32.@)
1108 * Unlock a local memory object.
1111 * TRUE: Object is still locked
1112 * FALSE: Object is unlocked
1115 * Windows memory management does not provide a separate local heap
1118 BOOL WINAPI LocalUnlock(
1119 HLOCAL handle /* [in] Handle of memory object */
1121 return GlobalUnlock( handle );
1125 /***********************************************************************
1126 * GlobalMemoryStatusEx (KERNEL32.@)
1127 * A version of GlobalMemoryStatus that can deal with memory over 4GB
1132 BOOL WINAPI GlobalMemoryStatusEx( LPMEMORYSTATUSEX lpmemex )
1134 static MEMORYSTATUSEX cached_memstatus;
1135 static int cache_lastchecked = 0;
1139 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__)
1143 #elif defined(__APPLE__)
1148 unsigned long pagesize,maxpages,freepages,swapspace,swapfree;
1149 struct anoninfo swapinf;
1153 if (lpmemex->dwLength != sizeof(*lpmemex))
1155 SetLastError( ERROR_INVALID_PARAMETER );
1159 if (time(NULL)==cache_lastchecked) {
1160 *lpmemex = cached_memstatus;
1163 cache_lastchecked = time(NULL);
1165 lpmemex->dwMemoryLoad = 0;
1166 lpmemex->ullTotalPhys = 16*1024*1024;
1167 lpmemex->ullAvailPhys = 16*1024*1024;
1168 lpmemex->ullTotalPageFile = 16*1024*1024;
1169 lpmemex->ullAvailPageFile = 16*1024*1024;
1172 f = fopen( "/proc/meminfo", "r" );
1176 unsigned long total, used, free, shared, buffers, cached;
1178 lpmemex->ullTotalPhys = lpmemex->ullAvailPhys = 0;
1179 lpmemex->ullTotalPageFile = lpmemex->ullAvailPageFile = 0;
1180 while (fgets( buffer, sizeof(buffer), f ))
1182 /* old style /proc/meminfo ... */
1183 if (sscanf( buffer, "Mem: %lu %lu %lu %lu %lu %lu",
1184 &total, &used, &free, &shared, &buffers, &cached ))
1186 lpmemex->ullTotalPhys += total;
1187 lpmemex->ullAvailPhys += free + buffers + cached;
1189 if (sscanf( buffer, "Swap: %lu %lu %lu", &total, &used, &free ))
1191 lpmemex->ullTotalPageFile += total;
1192 lpmemex->ullAvailPageFile += free;
1195 /* new style /proc/meminfo ... */
1196 if (sscanf(buffer, "MemTotal: %lu", &total))
1197 lpmemex->ullTotalPhys = total*1024;
1198 if (sscanf(buffer, "MemFree: %lu", &free))
1199 lpmemex->ullAvailPhys = free*1024;
1200 if (sscanf(buffer, "SwapTotal: %lu", &total))
1201 lpmemex->ullTotalPageFile = total*1024;
1202 if (sscanf(buffer, "SwapFree: %lu", &free))
1203 lpmemex->ullAvailPageFile = free*1024;
1204 if (sscanf(buffer, "Buffers: %lu", &buffers))
1205 lpmemex->ullAvailPhys += buffers*1024;
1206 if (sscanf(buffer, "Cached: %lu", &cached))
1207 lpmemex->ullAvailPhys += cached*1024;
1211 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
1213 mib[1] = HW_PHYSMEM;
1214 size_sys = sizeof(val);
1215 sysctl(mib, 2, &val, &size_sys, NULL, 0);
1216 if (val) lpmemex->ullTotalPhys = val;
1217 mib[1] = HW_USERMEM;
1218 size_sys = sizeof(val);
1219 sysctl(mib, 2, &val, &size_sys, NULL, 0);
1220 if (!val) val = lpmemex->ullTotalPhys;
1221 lpmemex->ullAvailPhys = val;
1222 lpmemex->ullTotalPageFile = val;
1223 lpmemex->ullAvailPageFile = val;
1224 #elif defined ( sun )
1225 pagesize=sysconf(_SC_PAGESIZE);
1226 maxpages=sysconf(_SC_PHYS_PAGES);
1227 freepages=sysconf(_SC_AVPHYS_PAGES);
1228 rval=swapctl(SC_AINFO, &swapinf);
1231 swapspace=swapinf.ani_max*pagesize;
1232 swapfree=swapinf.ani_free*pagesize;
1236 WARN("Swap size cannot be determined , assuming equal to physical memory\n");
1237 swapspace=maxpages*pagesize;
1238 swapfree=maxpages*pagesize;
1240 lpmemex->ullTotalPhys=pagesize*maxpages;
1241 lpmemex->ullAvailPhys = pagesize*freepages;
1242 lpmemex->ullTotalPageFile = swapspace;
1243 lpmemex->ullAvailPageFile = swapfree;
1246 if (lpmemex->ullTotalPhys)
1248 lpmemex->dwMemoryLoad = (lpmemex->ullTotalPhys-lpmemex->ullAvailPhys)
1249 / (lpmemex->ullTotalPhys / 100);
1252 /* Win98 returns only the swapsize in ullTotalPageFile/ullAvailPageFile,
1253 WinXP returns the size of physical memory + swapsize;
1254 mimic the behavior of XP.
1255 Note: Project2k refuses to start if it sees less than 1Mb of free swap.
1257 lpmemex->ullTotalPageFile += lpmemex->ullTotalPhys;
1258 lpmemex->ullAvailPageFile += lpmemex->ullAvailPhys;
1260 /* Titan Quest refuses to run if TotalPageFile <= ullTotalPhys */
1261 if(lpmemex->ullTotalPageFile == lpmemex->ullTotalPhys)
1263 lpmemex->ullTotalPhys -= 1;
1264 lpmemex->ullAvailPhys -= 1;
1267 /* FIXME: should do something for other systems */
1269 lpmemex->ullTotalVirtual = (char*)si.lpMaximumApplicationAddress-(char*)si.lpMinimumApplicationAddress;
1270 /* FIXME: we should track down all the already allocated VM pages and substract them, for now arbitrarily remove 64KB so that it matches NT */
1271 lpmemex->ullAvailVirtual = lpmemex->ullTotalVirtual-64*1024;
1273 /* MSDN says about AvailExtendedVirtual: Size of unreserved and uncommitted
1274 memory in the extended portion of the virtual address space of the calling
1276 However, I don't know what this means, so set it to zero :(
1278 lpmemex->ullAvailExtendedVirtual = 0;
1280 cached_memstatus = *lpmemex;
1282 TRACE("<-- LPMEMORYSTATUSEX: dwLength %d, dwMemoryLoad %d, ullTotalPhys %s, ullAvailPhys %s,"
1283 " ullTotalPageFile %s, ullAvailPageFile %s, ullTotalVirtual %s, ullAvailVirtual %s\n",
1284 lpmemex->dwLength, lpmemex->dwMemoryLoad, wine_dbgstr_longlong(lpmemex->ullTotalPhys),
1285 wine_dbgstr_longlong(lpmemex->ullAvailPhys), wine_dbgstr_longlong(lpmemex->ullTotalPageFile),
1286 wine_dbgstr_longlong(lpmemex->ullAvailPageFile), wine_dbgstr_longlong(lpmemex->ullTotalVirtual),
1287 wine_dbgstr_longlong(lpmemex->ullAvailVirtual) );
1292 /***********************************************************************
1293 * GlobalMemoryStatus (KERNEL32.@)
1294 * Provides information about the status of the memory, so apps can tell
1295 * roughly how much they are able to allocate
1300 VOID WINAPI GlobalMemoryStatus( LPMEMORYSTATUS lpBuffer )
1302 MEMORYSTATUSEX memstatus;
1303 OSVERSIONINFOW osver;
1304 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( GetModuleHandleW(0) );
1306 /* Because GlobalMemoryStatus is identical to GlobalMemoryStatusEX save
1307 for one extra field in the struct, and the lack of a bug, we simply
1308 call GlobalMemoryStatusEx and copy the values across. */
1309 memstatus.dwLength = sizeof(memstatus);
1310 GlobalMemoryStatusEx(&memstatus);
1312 lpBuffer->dwLength = sizeof(*lpBuffer);
1313 lpBuffer->dwMemoryLoad = memstatus.dwMemoryLoad;
1315 /* Windows 2000 and later report -1 when values are greater than 4 Gb.
1316 * NT reports values modulo 4 Gb.
1319 osver.dwOSVersionInfoSize = sizeof(osver);
1320 GetVersionExW(&osver);
1322 if ( osver.dwMajorVersion >= 5 )
1324 lpBuffer->dwTotalPhys = min( memstatus.ullTotalPhys, MAXDWORD );
1325 lpBuffer->dwAvailPhys = min( memstatus.ullAvailPhys, MAXDWORD );
1326 lpBuffer->dwTotalPageFile = min( memstatus.ullTotalPageFile, MAXDWORD );
1327 lpBuffer->dwAvailPageFile = min( memstatus.ullAvailPageFile, MAXDWORD );
1328 lpBuffer->dwTotalVirtual = min( memstatus.ullTotalVirtual, MAXDWORD );
1329 lpBuffer->dwAvailVirtual = min( memstatus.ullAvailVirtual, MAXDWORD );
1332 else /* duplicate NT bug */
1334 lpBuffer->dwTotalPhys = memstatus.ullTotalPhys;
1335 lpBuffer->dwAvailPhys = memstatus.ullAvailPhys;
1336 lpBuffer->dwTotalPageFile = memstatus.ullTotalPageFile;
1337 lpBuffer->dwAvailPageFile = memstatus.ullAvailPageFile;
1338 lpBuffer->dwTotalVirtual = memstatus.ullTotalVirtual;
1339 lpBuffer->dwAvailVirtual = memstatus.ullAvailVirtual;
1342 /* values are limited to 2Gb unless the app has the IMAGE_FILE_LARGE_ADDRESS_AWARE flag */
1343 /* page file sizes are not limited (Adobe Illustrator 8 depends on this) */
1344 if (!(nt->FileHeader.Characteristics & IMAGE_FILE_LARGE_ADDRESS_AWARE))
1346 if (lpBuffer->dwTotalPhys > MAXLONG) lpBuffer->dwTotalPhys = MAXLONG;
1347 if (lpBuffer->dwAvailPhys > MAXLONG) lpBuffer->dwAvailPhys = MAXLONG;
1348 if (lpBuffer->dwTotalVirtual > MAXLONG) lpBuffer->dwTotalVirtual = MAXLONG;
1349 if (lpBuffer->dwAvailVirtual > MAXLONG) lpBuffer->dwAvailVirtual = MAXLONG;
1352 /* work around for broken photoshop 4 installer */
1353 if ( lpBuffer->dwAvailPhys + lpBuffer->dwAvailPageFile >= 2U*1024*1024*1024)
1354 lpBuffer->dwAvailPageFile = 2U*1024*1024*1024 - lpBuffer->dwAvailPhys - 1;
1356 /* limit page file size for really old binaries */
1357 if (nt->OptionalHeader.MajorSubsystemVersion < 4)
1359 if (lpBuffer->dwTotalPageFile > MAXLONG) lpBuffer->dwTotalPageFile = MAXLONG;
1360 if (lpBuffer->dwAvailPageFile > MAXLONG) lpBuffer->dwAvailPageFile = MAXLONG;
1363 TRACE("Length %u, MemoryLoad %u, TotalPhys %lx, AvailPhys %lx,"
1364 " TotalPageFile %lx, AvailPageFile %lx, TotalVirtual %lx, AvailVirtual %lx\n",
1365 lpBuffer->dwLength, lpBuffer->dwMemoryLoad, lpBuffer->dwTotalPhys,
1366 lpBuffer->dwAvailPhys, lpBuffer->dwTotalPageFile, lpBuffer->dwAvailPageFile,
1367 lpBuffer->dwTotalVirtual, lpBuffer->dwAvailVirtual );