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 * GetProcessHeaps (KERNEL32.@)
254 DWORD WINAPI GetProcessHeaps( DWORD count, HANDLE *heaps )
256 return RtlGetProcessHeaps( count, heaps );
260 /* These are needed so that we can call the functions from inside kernel itself */
262 /***********************************************************************
263 * HeapAlloc (KERNEL32.@)
265 LPVOID WINAPI HeapAlloc( HANDLE heap, DWORD flags, SIZE_T size )
267 return RtlAllocateHeap( heap, flags, size );
270 BOOL WINAPI HeapFree( HANDLE heap, DWORD flags, LPVOID ptr )
272 return RtlFreeHeap( heap, flags, ptr );
275 LPVOID WINAPI HeapReAlloc( HANDLE heap, DWORD flags, LPVOID ptr, SIZE_T size )
277 return RtlReAllocateHeap( heap, flags, ptr, size );
280 SIZE_T WINAPI HeapSize( HANDLE heap, DWORD flags, LPCVOID ptr )
282 return RtlSizeHeap( heap, flags, ptr );
285 BOOL WINAPI HeapQueryInformation( HANDLE heap, HEAP_INFORMATION_CLASS info_class,
286 PVOID info, SIZE_T size_in, PSIZE_T size_out)
288 NTSTATUS ret = RtlQueryHeapInformation( heap, info_class, info, size_in, size_out );
289 if (ret) SetLastError( RtlNtStatusToDosError(ret) );
293 BOOL WINAPI HeapSetInformation( HANDLE heap, HEAP_INFORMATION_CLASS infoclass, PVOID info, SIZE_T size)
295 FIXME("%p %d %p %ld\n", heap, infoclass, info, size );
300 * Win32 Global heap functions (GlobalXXX).
301 * These functions included in Win32 for compatibility with 16 bit Windows
302 * Especially the moveable blocks and handles are oldish.
303 * But the ability to directly allocate memory with GPTR and LPTR is widely
306 * The handle stuff looks horrible, but it's implemented almost like Win95
311 #define MAGIC_GLOBAL_USED 0x5342
312 #define HANDLE_TO_INTERN(h) ((PGLOBAL32_INTERN)(((char *)(h))-2))
313 #define INTERN_TO_HANDLE(i) (&((i)->Pointer))
314 #define POINTER_TO_HANDLE(p) (*(((const HGLOBAL *)(p))-2))
315 #define ISHANDLE(h) (((ULONG_PTR)(h)&2)!=0)
316 #define ISPOINTER(h) (((ULONG_PTR)(h)&2)==0)
317 /* align the storage needed for the HGLOBAL on an 8byte boundary thus
318 * GlobalAlloc/GlobalReAlloc'ing with GMEM_MOVEABLE of memory with
319 * size = 8*k, where k=1,2,3,... alloc's exactly the given size.
320 * The Minolta DiMAGE Image Viewer heavily relies on this, corrupting
321 * the output jpeg's > 1 MB if not */
322 #define HGLOBAL_STORAGE (sizeof(HGLOBAL)*2)
324 #include "pshpack1.h"
326 typedef struct __GLOBAL32_INTERN
332 } GLOBAL32_INTERN, *PGLOBAL32_INTERN;
336 /***********************************************************************
337 * GlobalAlloc (KERNEL32.@)
339 * Allocate a global memory object.
345 HGLOBAL WINAPI GlobalAlloc(
346 UINT flags, /* [in] Object allocation attributes */
347 SIZE_T size /* [in] Number of bytes to allocate */
349 PGLOBAL32_INTERN pintern;
353 if(flags&GMEM_ZEROINIT)
354 hpflags=HEAP_ZERO_MEMORY;
358 if((flags & GMEM_MOVEABLE)==0) /* POINTER */
360 palloc=HeapAlloc(GetProcessHeap(), hpflags, size);
361 TRACE( "(flags=%04x) returning %p\n", flags, palloc );
366 if (size > INT_MAX-HGLOBAL_STORAGE)
368 SetLastError(ERROR_OUTOFMEMORY);
372 RtlLockHeap(GetProcessHeap());
374 pintern = HeapAlloc(GetProcessHeap(), 0, sizeof(GLOBAL32_INTERN));
377 /* Mask out obsolete flags */
378 flags &= ~(GMEM_LOWER | GMEM_NOCOMPACT | GMEM_NOT_BANKED | GMEM_NOTIFY);
380 pintern->Magic = MAGIC_GLOBAL_USED;
381 pintern->Flags = flags >> 8;
382 pintern->LockCount = 0;
386 palloc = HeapAlloc(GetProcessHeap(), hpflags, size+HGLOBAL_STORAGE);
389 HeapFree(GetProcessHeap(), 0, pintern);
394 *(HGLOBAL *)palloc = INTERN_TO_HANDLE(pintern);
395 pintern->Pointer = (char *)palloc + HGLOBAL_STORAGE;
399 pintern->Pointer = NULL;
402 RtlUnlockHeap(GetProcessHeap());
403 if (!pintern) return 0;
404 TRACE( "(flags=%04x) returning handle %p pointer %p\n",
405 flags, INTERN_TO_HANDLE(pintern), pintern->Pointer );
406 return INTERN_TO_HANDLE(pintern);
411 /***********************************************************************
412 * GlobalLock (KERNEL32.@)
414 * Lock a global memory object and return a pointer to first byte of the memory
417 * hmem [I] Handle of the global memory object
420 * Success: Pointer to first byte of the memory block
424 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
427 LPVOID WINAPI GlobalLock(HGLOBAL hmem)
429 PGLOBAL32_INTERN pintern;
433 return IsBadReadPtr(hmem, 1) ? NULL : hmem;
435 RtlLockHeap(GetProcessHeap());
438 pintern = HANDLE_TO_INTERN(hmem);
439 if (pintern->Magic == MAGIC_GLOBAL_USED)
441 palloc = pintern->Pointer;
442 if (!pintern->Pointer)
443 SetLastError(ERROR_DISCARDED);
444 else if (pintern->LockCount < GMEM_LOCKCOUNT)
445 pintern->LockCount++;
449 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
451 SetLastError(ERROR_INVALID_HANDLE);
456 WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
458 SetLastError(ERROR_INVALID_HANDLE);
461 RtlUnlockHeap(GetProcessHeap());
466 /***********************************************************************
467 * GlobalUnlock (KERNEL32.@)
469 * Unlock a global memory object.
472 * hmem [I] Handle of the global memory object
475 * Success: Object is still locked
476 * Failure: FALSE (The Object is unlocked)
479 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
482 BOOL WINAPI GlobalUnlock(HGLOBAL hmem)
484 PGLOBAL32_INTERN pintern;
487 if (ISPOINTER(hmem)) return TRUE;
489 RtlLockHeap(GetProcessHeap());
492 pintern=HANDLE_TO_INTERN(hmem);
493 if(pintern->Magic==MAGIC_GLOBAL_USED)
495 if(pintern->LockCount)
497 pintern->LockCount--;
498 locked = (pintern->LockCount != 0);
499 if (!locked) SetLastError(NO_ERROR);
503 WARN("%p not locked\n", hmem);
504 SetLastError(ERROR_NOT_LOCKED);
510 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
511 SetLastError(ERROR_INVALID_HANDLE);
517 WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
518 SetLastError( ERROR_INVALID_PARAMETER );
522 RtlUnlockHeap(GetProcessHeap());
527 /***********************************************************************
528 * GlobalHandle (KERNEL32.@)
530 * Get the handle associated with the pointer to a global memory block.
536 HGLOBAL WINAPI GlobalHandle(
537 LPCVOID pmem /* [in] Pointer to global memory block */
540 PGLOBAL32_INTERN maybe_intern;
545 SetLastError( ERROR_INVALID_PARAMETER );
549 RtlLockHeap(GetProcessHeap());
554 /* note that if pmem is a pointer to a block allocated by */
555 /* GlobalAlloc with GMEM_MOVEABLE then magic test in HeapValidate */
557 if (ISPOINTER(pmem)) {
558 if (HeapValidate( GetProcessHeap(), 0, pmem )) {
559 handle = (HGLOBAL)pmem; /* valid fixed block */
562 handle = POINTER_TO_HANDLE(pmem);
564 handle = (HGLOBAL)pmem;
566 /* Now test handle either passed in or retrieved from pointer */
567 maybe_intern = HANDLE_TO_INTERN( handle );
568 if (maybe_intern->Magic == MAGIC_GLOBAL_USED) {
569 test = maybe_intern->Pointer;
570 if (HeapValidate( GetProcessHeap(), 0, (const char *)test - HGLOBAL_STORAGE ) && /* obj(-handle) valid arena? */
571 HeapValidate( GetProcessHeap(), 0, maybe_intern )) /* intern valid arena? */
572 break; /* valid moveable block */
575 SetLastError( ERROR_INVALID_HANDLE );
579 SetLastError( ERROR_INVALID_HANDLE );
583 RtlUnlockHeap(GetProcessHeap());
589 /***********************************************************************
590 * GlobalReAlloc (KERNEL32.@)
592 * Change the size or attributes of a global memory object.
598 HGLOBAL WINAPI GlobalReAlloc(
599 HGLOBAL hmem, /* [in] Handle of global memory object */
600 SIZE_T size, /* [in] New size of block */
601 UINT flags /* [in] How to reallocate object */
605 PGLOBAL32_INTERN pintern;
606 DWORD heap_flags = (flags & GMEM_ZEROINIT) ? HEAP_ZERO_MEMORY : 0;
609 RtlLockHeap(GetProcessHeap());
610 if(flags & GMEM_MODIFY) /* modify flags */
612 if( ISPOINTER(hmem) && (flags & GMEM_MOVEABLE))
614 /* make a fixed block moveable
615 * actually only NT is able to do this. But it's soo simple
619 WARN("GlobalReAlloc with null handle!\n");
620 SetLastError( ERROR_NOACCESS );
625 size = HeapSize(GetProcessHeap(), 0, hmem);
626 hnew = GlobalAlloc(flags, size);
627 palloc = GlobalLock(hnew);
628 memcpy(palloc, hmem, size);
633 else if( ISPOINTER(hmem) &&(flags & GMEM_DISCARDABLE))
635 /* change the flags to make our block "discardable" */
636 pintern=HANDLE_TO_INTERN(hmem);
637 pintern->Flags = pintern->Flags | (GMEM_DISCARDABLE >> 8);
642 SetLastError(ERROR_INVALID_PARAMETER);
650 /* reallocate fixed memory */
651 hnew=HeapReAlloc(GetProcessHeap(), heap_flags, hmem, size);
655 /* reallocate a moveable block */
656 pintern=HANDLE_TO_INTERN(hmem);
659 /* Apparently Windows doesn't care whether the handle is locked at this point */
660 /* See also the same comment in GlobalFree() */
661 if(pintern->LockCount>1) {
662 ERR("handle 0x%08lx is still locked, cannot realloc!\n",(DWORD)hmem);
663 SetLastError(ERROR_INVALID_HANDLE);
671 if(size > INT_MAX-HGLOBAL_STORAGE)
673 SetLastError(ERROR_OUTOFMEMORY);
676 else if((palloc = HeapReAlloc(GetProcessHeap(), heap_flags,
677 (char *) pintern->Pointer-HGLOBAL_STORAGE,
678 size+HGLOBAL_STORAGE)) == NULL)
679 hnew = 0; /* Block still valid */
681 pintern->Pointer = (char *)palloc+HGLOBAL_STORAGE;
685 if(size > INT_MAX-HGLOBAL_STORAGE)
687 SetLastError(ERROR_OUTOFMEMORY);
690 else if((palloc=HeapAlloc(GetProcessHeap(), heap_flags, size+HGLOBAL_STORAGE))
695 *(HGLOBAL *)palloc = hmem;
696 pintern->Pointer = (char *)palloc + HGLOBAL_STORAGE;
702 if (pintern->LockCount == 0)
706 HeapFree(GetProcessHeap(), 0, (char *) pintern->Pointer-HGLOBAL_STORAGE);
707 pintern->Pointer = NULL;
712 WARN("not freeing memory associated with locked handle\n");
716 RtlUnlockHeap(GetProcessHeap());
721 /***********************************************************************
722 * GlobalFree (KERNEL32.@)
724 * Free a global memory object.
727 * hmem [I] Handle of the global memory object
731 * Failure: The provided handle
734 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
737 HGLOBAL WINAPI GlobalFree(HGLOBAL hmem)
739 PGLOBAL32_INTERN pintern;
742 RtlLockHeap(GetProcessHeap());
746 if(ISPOINTER(hmem)) /* POINTER */
748 if(!HeapFree(GetProcessHeap(), 0, hmem))
750 SetLastError(ERROR_INVALID_HANDLE);
756 pintern=HANDLE_TO_INTERN(hmem);
758 if(pintern->Magic==MAGIC_GLOBAL_USED)
760 pintern->Magic = 0xdead;
762 /* WIN98 does not make this test. That is you can free a */
763 /* block you have not unlocked. Go figure!! */
764 /* if(pintern->LockCount!=0) */
765 /* SetLastError(ERROR_INVALID_HANDLE); */
768 if(!HeapFree(GetProcessHeap(), 0, (char *)(pintern->Pointer)-HGLOBAL_STORAGE))
770 if(!HeapFree(GetProcessHeap(), 0, pintern))
775 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
776 SetLastError(ERROR_INVALID_HANDLE);
783 ERR("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
784 SetLastError( ERROR_INVALID_PARAMETER );
788 RtlUnlockHeap(GetProcessHeap());
793 /***********************************************************************
794 * GlobalSize (KERNEL32.@)
796 * Get the size of a global memory object.
799 * hmem [I] Handle of the global memory object
803 * Success: Size in Bytes of the global memory object
806 * When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
809 SIZE_T WINAPI GlobalSize(HGLOBAL hmem)
812 PGLOBAL32_INTERN pintern;
814 if (!((ULONG_PTR)hmem >> 16))
816 SetLastError(ERROR_INVALID_HANDLE);
822 retval=HeapSize(GetProcessHeap(), 0, hmem);
826 RtlLockHeap(GetProcessHeap());
827 pintern=HANDLE_TO_INTERN(hmem);
829 if(pintern->Magic==MAGIC_GLOBAL_USED)
831 if (!pintern->Pointer) /* handle case of GlobalAlloc( ??,0) */
835 retval = HeapSize(GetProcessHeap(), 0,
836 (char *)(pintern->Pointer) - HGLOBAL_STORAGE );
837 if (retval != (DWORD)-1) retval -= HGLOBAL_STORAGE;
842 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
843 SetLastError(ERROR_INVALID_HANDLE);
846 RtlUnlockHeap(GetProcessHeap());
848 /* HeapSize returns 0xffffffff on failure */
849 if (retval == 0xffffffff) retval = 0;
854 /***********************************************************************
855 * GlobalWire (KERNEL32.@)
857 LPVOID WINAPI GlobalWire(HGLOBAL hmem)
859 return GlobalLock( hmem );
863 /***********************************************************************
864 * GlobalUnWire (KERNEL32.@)
866 BOOL WINAPI GlobalUnWire(HGLOBAL hmem)
868 return GlobalUnlock( hmem);
872 /***********************************************************************
873 * GlobalFix (KERNEL32.@)
875 VOID WINAPI GlobalFix(HGLOBAL hmem)
881 /***********************************************************************
882 * GlobalUnfix (KERNEL32.@)
884 VOID WINAPI GlobalUnfix(HGLOBAL hmem)
890 /***********************************************************************
891 * GlobalFlags (KERNEL32.@)
893 * Get information about a global memory object.
896 * hmem [I] Handle of the global memory object
899 * Failure: GMEM_INVALID_HANDLE, when the provided handle is invalid
900 * Success: Value specifying allocation flags and lock count
903 UINT WINAPI GlobalFlags(HGLOBAL hmem)
906 PGLOBAL32_INTERN pintern;
914 RtlLockHeap(GetProcessHeap());
915 pintern=HANDLE_TO_INTERN(hmem);
916 if(pintern->Magic==MAGIC_GLOBAL_USED)
918 retval=pintern->LockCount + (pintern->Flags<<8);
919 if(pintern->Pointer==0)
920 retval|= GMEM_DISCARDED;
924 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
925 SetLastError(ERROR_INVALID_HANDLE);
926 retval = GMEM_INVALID_HANDLE;
928 RtlUnlockHeap(GetProcessHeap());
934 /***********************************************************************
935 * GlobalCompact (KERNEL32.@)
937 SIZE_T WINAPI GlobalCompact( DWORD minfree )
939 return 0; /* GlobalCompact does nothing in Win32 */
943 /***********************************************************************
944 * LocalAlloc (KERNEL32.@)
946 * Allocate a local memory object.
953 * Windows memory management does not provide a separate local heap
956 HLOCAL WINAPI LocalAlloc(
957 UINT flags, /* [in] Allocation attributes */
958 SIZE_T size /* [in] Number of bytes to allocate */
960 return GlobalAlloc( flags, size );
964 /***********************************************************************
965 * LocalCompact (KERNEL32.@)
967 SIZE_T WINAPI LocalCompact( UINT minfree )
969 return 0; /* LocalCompact does nothing in Win32 */
973 /***********************************************************************
974 * LocalFlags (KERNEL32.@)
976 * Get information about a local memory object.
979 * Value specifying allocation flags and lock count.
980 * LMEM_INVALID_HANDLE: Failure
983 * Windows memory management does not provide a separate local heap
986 UINT WINAPI LocalFlags(
987 HLOCAL handle /* [in] Handle of memory object */
989 return GlobalFlags( handle );
993 /***********************************************************************
994 * LocalFree (KERNEL32.@)
996 * Free a local memory object.
1003 * Windows memory management does not provide a separate local heap
1006 HLOCAL WINAPI LocalFree(
1007 HLOCAL handle /* [in] Handle of memory object */
1009 return GlobalFree( handle );
1013 /***********************************************************************
1014 * LocalHandle (KERNEL32.@)
1016 * Get the handle associated with the pointer to a local memory block.
1023 * Windows memory management does not provide a separate local heap
1026 HLOCAL WINAPI LocalHandle(
1027 LPCVOID ptr /* [in] Address of local memory block */
1029 return GlobalHandle( ptr );
1033 /***********************************************************************
1034 * LocalLock (KERNEL32.@)
1035 * Locks a local memory object and returns pointer to the first byte
1036 * of the memory block.
1043 * Windows memory management does not provide a separate local heap
1046 LPVOID WINAPI LocalLock(
1047 HLOCAL handle /* [in] Address of local memory object */
1049 return GlobalLock( handle );
1053 /***********************************************************************
1054 * LocalReAlloc (KERNEL32.@)
1056 * Change the size or attributes of a local memory object.
1063 * Windows memory management does not provide a separate local heap
1066 HLOCAL WINAPI LocalReAlloc(
1067 HLOCAL handle, /* [in] Handle of memory object */
1068 SIZE_T size, /* [in] New size of block */
1069 UINT flags /* [in] How to reallocate object */
1071 return GlobalReAlloc( handle, size, flags );
1075 /***********************************************************************
1076 * LocalShrink (KERNEL32.@)
1078 SIZE_T WINAPI LocalShrink( HGLOBAL handle, UINT newsize )
1080 return 0; /* LocalShrink does nothing in Win32 */
1084 /***********************************************************************
1085 * LocalSize (KERNEL32.@)
1087 * Get the size of a local memory object.
1094 * Windows memory management does not provide a separate local heap
1097 SIZE_T WINAPI LocalSize(
1098 HLOCAL handle /* [in] Handle of memory object */
1100 return GlobalSize( handle );
1104 /***********************************************************************
1105 * LocalUnlock (KERNEL32.@)
1107 * Unlock a local memory object.
1110 * TRUE: Object is still locked
1111 * FALSE: Object is unlocked
1114 * Windows memory management does not provide a separate local heap
1117 BOOL WINAPI LocalUnlock(
1118 HLOCAL handle /* [in] Handle of memory object */
1121 if (ISPOINTER( handle ))
1123 SetLastError( ERROR_NOT_LOCKED );
1127 return GlobalUnlock( handle );
1131 /***********************************************************************
1132 * GlobalMemoryStatusEx (KERNEL32.@)
1133 * A version of GlobalMemoryStatus that can deal with memory over 4GB
1138 BOOL WINAPI GlobalMemoryStatusEx( LPMEMORYSTATUSEX lpmemex )
1140 static MEMORYSTATUSEX cached_memstatus;
1141 static int cache_lastchecked = 0;
1145 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__)
1149 #elif defined(__APPLE__)
1154 unsigned long pagesize,maxpages,freepages,swapspace,swapfree;
1155 struct anoninfo swapinf;
1159 if (lpmemex->dwLength != sizeof(*lpmemex))
1161 SetLastError( ERROR_INVALID_PARAMETER );
1165 if (time(NULL)==cache_lastchecked) {
1166 *lpmemex = cached_memstatus;
1169 cache_lastchecked = time(NULL);
1171 lpmemex->dwMemoryLoad = 0;
1172 lpmemex->ullTotalPhys = 16*1024*1024;
1173 lpmemex->ullAvailPhys = 16*1024*1024;
1174 lpmemex->ullTotalPageFile = 16*1024*1024;
1175 lpmemex->ullAvailPageFile = 16*1024*1024;
1178 f = fopen( "/proc/meminfo", "r" );
1182 unsigned long total, used, free, shared, buffers, cached;
1184 lpmemex->ullTotalPhys = lpmemex->ullAvailPhys = 0;
1185 lpmemex->ullTotalPageFile = lpmemex->ullAvailPageFile = 0;
1186 while (fgets( buffer, sizeof(buffer), f ))
1188 /* old style /proc/meminfo ... */
1189 if (sscanf( buffer, "Mem: %lu %lu %lu %lu %lu %lu",
1190 &total, &used, &free, &shared, &buffers, &cached ))
1192 lpmemex->ullTotalPhys += total;
1193 lpmemex->ullAvailPhys += free + buffers + cached;
1195 if (sscanf( buffer, "Swap: %lu %lu %lu", &total, &used, &free ))
1197 lpmemex->ullTotalPageFile += total;
1198 lpmemex->ullAvailPageFile += free;
1201 /* new style /proc/meminfo ... */
1202 if (sscanf(buffer, "MemTotal: %lu", &total))
1203 lpmemex->ullTotalPhys = total*1024;
1204 if (sscanf(buffer, "MemFree: %lu", &free))
1205 lpmemex->ullAvailPhys = free*1024;
1206 if (sscanf(buffer, "SwapTotal: %lu", &total))
1207 lpmemex->ullTotalPageFile = total*1024;
1208 if (sscanf(buffer, "SwapFree: %lu", &free))
1209 lpmemex->ullAvailPageFile = free*1024;
1210 if (sscanf(buffer, "Buffers: %lu", &buffers))
1211 lpmemex->ullAvailPhys += buffers*1024;
1212 if (sscanf(buffer, "Cached: %lu", &cached))
1213 lpmemex->ullAvailPhys += cached*1024;
1217 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
1219 mib[1] = HW_PHYSMEM;
1220 size_sys = sizeof(val);
1221 sysctl(mib, 2, &val, &size_sys, NULL, 0);
1222 if (val) lpmemex->ullTotalPhys = val;
1223 mib[1] = HW_USERMEM;
1224 size_sys = sizeof(val);
1225 sysctl(mib, 2, &val, &size_sys, NULL, 0);
1226 if (!val) val = lpmemex->ullTotalPhys;
1227 lpmemex->ullAvailPhys = val;
1228 lpmemex->ullTotalPageFile = val;
1229 lpmemex->ullAvailPageFile = val;
1230 #elif defined ( sun )
1231 pagesize=sysconf(_SC_PAGESIZE);
1232 maxpages=sysconf(_SC_PHYS_PAGES);
1233 freepages=sysconf(_SC_AVPHYS_PAGES);
1234 rval=swapctl(SC_AINFO, &swapinf);
1237 swapspace=swapinf.ani_max*pagesize;
1238 swapfree=swapinf.ani_free*pagesize;
1242 WARN("Swap size cannot be determined , assuming equal to physical memory\n");
1243 swapspace=maxpages*pagesize;
1244 swapfree=maxpages*pagesize;
1246 lpmemex->ullTotalPhys=pagesize*maxpages;
1247 lpmemex->ullAvailPhys = pagesize*freepages;
1248 lpmemex->ullTotalPageFile = swapspace;
1249 lpmemex->ullAvailPageFile = swapfree;
1252 if (lpmemex->ullTotalPhys)
1254 lpmemex->dwMemoryLoad = (lpmemex->ullTotalPhys-lpmemex->ullAvailPhys)
1255 / (lpmemex->ullTotalPhys / 100);
1258 /* Win98 returns only the swapsize in ullTotalPageFile/ullAvailPageFile,
1259 WinXP returns the size of physical memory + swapsize;
1260 mimic the behavior of XP.
1261 Note: Project2k refuses to start if it sees less than 1Mb of free swap.
1263 lpmemex->ullTotalPageFile += lpmemex->ullTotalPhys;
1264 lpmemex->ullAvailPageFile += lpmemex->ullAvailPhys;
1266 /* Titan Quest refuses to run if TotalPageFile <= ullTotalPhys */
1267 if(lpmemex->ullTotalPageFile == lpmemex->ullTotalPhys)
1269 lpmemex->ullTotalPhys -= 1;
1270 lpmemex->ullAvailPhys -= 1;
1273 /* FIXME: should do something for other systems */
1275 lpmemex->ullTotalVirtual = (ULONG_PTR)si.lpMaximumApplicationAddress-(ULONG_PTR)si.lpMinimumApplicationAddress;
1276 /* FIXME: we should track down all the already allocated VM pages and subtract them, for now arbitrarily remove 64KB so that it matches NT */
1277 lpmemex->ullAvailVirtual = lpmemex->ullTotalVirtual-64*1024;
1279 /* MSDN says about AvailExtendedVirtual: Size of unreserved and uncommitted
1280 memory in the extended portion of the virtual address space of the calling
1282 However, I don't know what this means, so set it to zero :(
1284 lpmemex->ullAvailExtendedVirtual = 0;
1286 cached_memstatus = *lpmemex;
1288 TRACE("<-- LPMEMORYSTATUSEX: dwLength %d, dwMemoryLoad %d, ullTotalPhys %s, ullAvailPhys %s,"
1289 " ullTotalPageFile %s, ullAvailPageFile %s, ullTotalVirtual %s, ullAvailVirtual %s\n",
1290 lpmemex->dwLength, lpmemex->dwMemoryLoad, wine_dbgstr_longlong(lpmemex->ullTotalPhys),
1291 wine_dbgstr_longlong(lpmemex->ullAvailPhys), wine_dbgstr_longlong(lpmemex->ullTotalPageFile),
1292 wine_dbgstr_longlong(lpmemex->ullAvailPageFile), wine_dbgstr_longlong(lpmemex->ullTotalVirtual),
1293 wine_dbgstr_longlong(lpmemex->ullAvailVirtual) );
1298 /***********************************************************************
1299 * GlobalMemoryStatus (KERNEL32.@)
1300 * Provides information about the status of the memory, so apps can tell
1301 * roughly how much they are able to allocate
1306 VOID WINAPI GlobalMemoryStatus( LPMEMORYSTATUS lpBuffer )
1308 MEMORYSTATUSEX memstatus;
1309 OSVERSIONINFOW osver;
1310 IMAGE_NT_HEADERS *nt = RtlImageNtHeader( GetModuleHandleW(0) );
1312 /* Because GlobalMemoryStatus is identical to GlobalMemoryStatusEX save
1313 for one extra field in the struct, and the lack of a bug, we simply
1314 call GlobalMemoryStatusEx and copy the values across. */
1315 memstatus.dwLength = sizeof(memstatus);
1316 GlobalMemoryStatusEx(&memstatus);
1318 lpBuffer->dwLength = sizeof(*lpBuffer);
1319 lpBuffer->dwMemoryLoad = memstatus.dwMemoryLoad;
1321 /* Windows 2000 and later report -1 when values are greater than 4 Gb.
1322 * NT reports values modulo 4 Gb.
1325 osver.dwOSVersionInfoSize = sizeof(osver);
1326 GetVersionExW(&osver);
1328 if ( osver.dwMajorVersion >= 5 || osver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS )
1330 lpBuffer->dwTotalPhys = min( memstatus.ullTotalPhys, MAXDWORD );
1331 lpBuffer->dwAvailPhys = min( memstatus.ullAvailPhys, MAXDWORD );
1332 lpBuffer->dwTotalPageFile = min( memstatus.ullTotalPageFile, MAXDWORD );
1333 lpBuffer->dwAvailPageFile = min( memstatus.ullAvailPageFile, MAXDWORD );
1334 lpBuffer->dwTotalVirtual = min( memstatus.ullTotalVirtual, MAXDWORD );
1335 lpBuffer->dwAvailVirtual = min( memstatus.ullAvailVirtual, MAXDWORD );
1338 else /* duplicate NT bug */
1340 lpBuffer->dwTotalPhys = memstatus.ullTotalPhys;
1341 lpBuffer->dwAvailPhys = memstatus.ullAvailPhys;
1342 lpBuffer->dwTotalPageFile = memstatus.ullTotalPageFile;
1343 lpBuffer->dwAvailPageFile = memstatus.ullAvailPageFile;
1344 lpBuffer->dwTotalVirtual = memstatus.ullTotalVirtual;
1345 lpBuffer->dwAvailVirtual = memstatus.ullAvailVirtual;
1348 /* values are limited to 2Gb unless the app has the IMAGE_FILE_LARGE_ADDRESS_AWARE flag */
1349 /* page file sizes are not limited (Adobe Illustrator 8 depends on this) */
1350 if (!(nt->FileHeader.Characteristics & IMAGE_FILE_LARGE_ADDRESS_AWARE))
1352 if (lpBuffer->dwTotalPhys > MAXLONG) lpBuffer->dwTotalPhys = MAXLONG;
1353 if (lpBuffer->dwAvailPhys > MAXLONG) lpBuffer->dwAvailPhys = MAXLONG;
1354 if (lpBuffer->dwTotalVirtual > MAXLONG) lpBuffer->dwTotalVirtual = MAXLONG;
1355 if (lpBuffer->dwAvailVirtual > MAXLONG) lpBuffer->dwAvailVirtual = MAXLONG;
1358 /* work around for broken photoshop 4 installer */
1359 if ( lpBuffer->dwAvailPhys + lpBuffer->dwAvailPageFile >= 2U*1024*1024*1024)
1360 lpBuffer->dwAvailPageFile = 2U*1024*1024*1024 - lpBuffer->dwAvailPhys - 1;
1362 /* limit page file size for really old binaries */
1363 if (nt->OptionalHeader.MajorSubsystemVersion < 4)
1365 if (lpBuffer->dwTotalPageFile > MAXLONG) lpBuffer->dwTotalPageFile = MAXLONG;
1366 if (lpBuffer->dwAvailPageFile > MAXLONG) lpBuffer->dwAvailPageFile = MAXLONG;
1369 TRACE("Length %u, MemoryLoad %u, TotalPhys %lx, AvailPhys %lx,"
1370 " TotalPageFile %lx, AvailPageFile %lx, TotalVirtual %lx, AvailVirtual %lx\n",
1371 lpBuffer->dwLength, lpBuffer->dwMemoryLoad, lpBuffer->dwTotalPhys,
1372 lpBuffer->dwAvailPhys, lpBuffer->dwTotalPageFile, lpBuffer->dwAvailPageFile,
1373 lpBuffer->dwTotalVirtual, lpBuffer->dwAvailVirtual );