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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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) (*(((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.
398 * Pointer to first byte of block
401 LPVOID WINAPI GlobalLock(
402 HGLOBAL hmem /* [in] Handle of global memory object */
405 PGLOBAL32_INTERN pintern;
409 return IsBadReadPtr(hmem, 1) ? NULL : hmem;
411 RtlLockHeap(GetProcessHeap());
414 pintern = HANDLE_TO_INTERN(hmem);
415 if (pintern->Magic == MAGIC_GLOBAL_USED)
417 palloc = pintern->Pointer;
418 if (!pintern->Pointer)
419 SetLastError(ERROR_DISCARDED);
420 else if (pintern->LockCount < GMEM_LOCKCOUNT)
421 pintern->LockCount++;
425 WARN("invalid handle %p\n", hmem);
427 SetLastError(ERROR_INVALID_HANDLE);
432 WARN("page fault on %p\n", hmem);
434 SetLastError(ERROR_INVALID_HANDLE);
437 RtlUnlockHeap(GetProcessHeap());
442 /***********************************************************************
443 * GlobalUnlock (KERNEL32.@)
445 * Unlock a global memory object.
448 * TRUE: Object is still locked
449 * FALSE: Object is unlocked
451 BOOL WINAPI GlobalUnlock(
452 HGLOBAL hmem /* [in] Handle of global memory object */
454 PGLOBAL32_INTERN pintern;
457 if (ISPOINTER(hmem)) return FALSE;
459 RtlLockHeap(GetProcessHeap());
462 pintern=HANDLE_TO_INTERN(hmem);
463 if(pintern->Magic==MAGIC_GLOBAL_USED)
465 if(pintern->LockCount)
467 pintern->LockCount--;
468 locked = (pintern->LockCount != 0);
469 if (!locked) SetLastError(NO_ERROR);
473 WARN("%p not locked\n", hmem);
474 SetLastError(ERROR_NOT_LOCKED);
480 WARN("invalid handle\n");
481 SetLastError(ERROR_INVALID_HANDLE);
487 ERR("page fault occurred ! Caused by bug ?\n");
488 SetLastError( ERROR_INVALID_PARAMETER );
492 RtlUnlockHeap(GetProcessHeap());
497 /***********************************************************************
498 * GlobalHandle (KERNEL32.@)
500 * Get the handle associated with the pointer to a global memory block.
506 HGLOBAL WINAPI GlobalHandle(
507 LPCVOID pmem /* [in] Pointer to global memory block */
510 PGLOBAL32_INTERN maybe_intern;
515 SetLastError( ERROR_INVALID_PARAMETER );
519 RtlLockHeap(GetProcessHeap());
524 /* note that if pmem is a pointer to a a block allocated by */
525 /* GlobalAlloc with GMEM_MOVEABLE then magic test in HeapValidate */
527 if (ISPOINTER(pmem)) {
528 if (HeapValidate( GetProcessHeap(), 0, pmem )) {
529 handle = (HGLOBAL)pmem; /* valid fixed block */
532 handle = POINTER_TO_HANDLE(pmem);
534 handle = (HGLOBAL)pmem;
536 /* Now test handle either passed in or retrieved from pointer */
537 maybe_intern = HANDLE_TO_INTERN( handle );
538 if (maybe_intern->Magic == MAGIC_GLOBAL_USED) {
539 test = maybe_intern->Pointer;
540 if (HeapValidate( GetProcessHeap(), 0, (const char *)test - HGLOBAL_STORAGE ) && /* obj(-handle) valid arena? */
541 HeapValidate( GetProcessHeap(), 0, maybe_intern )) /* intern valid arena? */
542 break; /* valid moveable block */
545 SetLastError( ERROR_INVALID_HANDLE );
549 SetLastError( ERROR_INVALID_HANDLE );
553 RtlUnlockHeap(GetProcessHeap());
559 /***********************************************************************
560 * GlobalReAlloc (KERNEL32.@)
562 * Change the size or attributes of a global memory object.
568 HGLOBAL WINAPI GlobalReAlloc(
569 HGLOBAL hmem, /* [in] Handle of global memory object */
570 SIZE_T size, /* [in] New size of block */
571 UINT flags /* [in] How to reallocate object */
575 PGLOBAL32_INTERN pintern;
576 DWORD heap_flags = (flags & GMEM_ZEROINIT) ? HEAP_ZERO_MEMORY : 0;
579 RtlLockHeap(GetProcessHeap());
580 if(flags & GMEM_MODIFY) /* modify flags */
582 if( ISPOINTER(hmem) && (flags & GMEM_MOVEABLE))
584 /* make a fixed block moveable
585 * actually only NT is able to do this. But it's soo simple
589 WARN("GlobalReAlloc with null handle!\n");
590 SetLastError( ERROR_NOACCESS );
595 size = HeapSize(GetProcessHeap(), 0, (LPVOID)hmem);
596 hnew = GlobalAlloc(flags, size);
597 palloc = GlobalLock(hnew);
598 memcpy(palloc, (LPVOID)hmem, size);
603 else if( ISPOINTER(hmem) &&(flags & GMEM_DISCARDABLE))
605 /* change the flags to make our block "discardable" */
606 pintern=HANDLE_TO_INTERN(hmem);
607 pintern->Flags = pintern->Flags | (GMEM_DISCARDABLE >> 8);
612 SetLastError(ERROR_INVALID_PARAMETER);
620 /* reallocate fixed memory */
621 hnew=HeapReAlloc(GetProcessHeap(), heap_flags, hmem, size);
625 /* reallocate a moveable block */
626 pintern=HANDLE_TO_INTERN(hmem);
629 /* Apparently Windows doesn't care whether the handle is locked at this point */
630 /* See also the same comment in GlobalFree() */
631 if(pintern->LockCount>1) {
632 ERR("handle 0x%08lx is still locked, cannot realloc!\n",(DWORD)hmem);
633 SetLastError(ERROR_INVALID_HANDLE);
641 if((palloc = HeapReAlloc(GetProcessHeap(), heap_flags,
642 (char *) pintern->Pointer-HGLOBAL_STORAGE,
643 size+HGLOBAL_STORAGE)) == NULL)
644 hnew = 0; /* Block still valid */
646 pintern->Pointer = (char *)palloc+HGLOBAL_STORAGE;
650 if((palloc=HeapAlloc(GetProcessHeap(), heap_flags, size+HGLOBAL_STORAGE))
655 *(HGLOBAL *)palloc = hmem;
656 pintern->Pointer = (char *)palloc + HGLOBAL_STORAGE;
662 if (pintern->LockCount == 0)
666 HeapFree(GetProcessHeap(), 0, (char *) pintern->Pointer-HGLOBAL_STORAGE);
667 pintern->Pointer = NULL;
672 WARN("not freeing memory associated with locked handle\n");
676 RtlUnlockHeap(GetProcessHeap());
681 /***********************************************************************
682 * GlobalFree (KERNEL32.@)
684 * Free a global memory object.
690 HGLOBAL WINAPI GlobalFree(
691 HGLOBAL hmem /* [in] Handle of global memory object */
693 PGLOBAL32_INTERN pintern;
696 RtlLockHeap(GetProcessHeap());
700 if(ISPOINTER(hmem)) /* POINTER */
702 if(!HeapFree(GetProcessHeap(), 0, (LPVOID) hmem)) hmem = 0;
706 pintern=HANDLE_TO_INTERN(hmem);
708 if(pintern->Magic==MAGIC_GLOBAL_USED)
711 /* WIN98 does not make this test. That is you can free a */
712 /* block you have not unlocked. Go figure!! */
713 /* if(pintern->LockCount!=0) */
714 /* SetLastError(ERROR_INVALID_HANDLE); */
717 if(!HeapFree(GetProcessHeap(), 0, (char *)(pintern->Pointer)-HGLOBAL_STORAGE))
719 if(!HeapFree(GetProcessHeap(), 0, pintern))
726 ERR("page fault occurred ! Caused by bug ?\n");
727 SetLastError( ERROR_INVALID_PARAMETER );
731 RtlUnlockHeap(GetProcessHeap());
736 /***********************************************************************
737 * GlobalSize (KERNEL32.@)
739 * Get the size of a global memory object.
742 * Size in bytes of the global memory object
745 SIZE_T WINAPI GlobalSize(
746 HGLOBAL hmem /* [in] Handle of global memory object */
749 PGLOBAL32_INTERN pintern;
755 retval=HeapSize(GetProcessHeap(), 0, (LPVOID) hmem);
759 RtlLockHeap(GetProcessHeap());
760 pintern=HANDLE_TO_INTERN(hmem);
762 if(pintern->Magic==MAGIC_GLOBAL_USED)
764 if (!pintern->Pointer) /* handle case of GlobalAlloc( ??,0) */
768 retval = HeapSize(GetProcessHeap(), 0,
769 (char *)(pintern->Pointer) - HGLOBAL_STORAGE );
770 if (retval != (DWORD)-1) retval -= HGLOBAL_STORAGE;
775 WARN("invalid handle\n");
778 RtlUnlockHeap(GetProcessHeap());
780 /* HeapSize returns 0xffffffff on failure */
781 if (retval == 0xffffffff) retval = 0;
786 /***********************************************************************
787 * GlobalWire (KERNEL32.@)
789 LPVOID WINAPI GlobalWire(HGLOBAL hmem)
791 return GlobalLock( hmem );
795 /***********************************************************************
796 * GlobalUnWire (KERNEL32.@)
798 BOOL WINAPI GlobalUnWire(HGLOBAL hmem)
800 return GlobalUnlock( hmem);
804 /***********************************************************************
805 * GlobalFix (KERNEL32.@)
807 VOID WINAPI GlobalFix(HGLOBAL hmem)
813 /***********************************************************************
814 * GlobalUnfix (KERNEL32.@)
816 VOID WINAPI GlobalUnfix(HGLOBAL hmem)
822 /***********************************************************************
823 * GlobalFlags (KERNEL32.@)
825 * Get information about a global memory object.
828 * Should this return GMEM_INVALID_HANDLE on invalid handle?
831 * Value specifying allocation flags and lock count
832 * GMEM_INVALID_HANDLE: Failure
834 UINT WINAPI GlobalFlags(
835 HGLOBAL hmem /* [in] Handle to global memory object */
838 PGLOBAL32_INTERN pintern;
846 RtlLockHeap(GetProcessHeap());
847 pintern=HANDLE_TO_INTERN(hmem);
848 if(pintern->Magic==MAGIC_GLOBAL_USED)
850 retval=pintern->LockCount + (pintern->Flags<<8);
851 if(pintern->Pointer==0)
852 retval|= GMEM_DISCARDED;
856 WARN("Invalid handle: %p\n", hmem);
859 RtlUnlockHeap(GetProcessHeap());
865 /***********************************************************************
866 * GlobalCompact (KERNEL32.@)
868 SIZE_T WINAPI GlobalCompact( DWORD minfree )
870 return 0; /* GlobalCompact does nothing in Win32 */
874 /***********************************************************************
875 * LocalAlloc (KERNEL32.@)
877 * Allocate a local memory object.
884 * Windows memory management does not provide a separate local heap
887 HLOCAL WINAPI LocalAlloc(
888 UINT flags, /* [in] Allocation attributes */
889 SIZE_T size /* [in] Number of bytes to allocate */
891 return (HLOCAL)GlobalAlloc( flags, size );
895 /***********************************************************************
896 * LocalCompact (KERNEL32.@)
898 SIZE_T WINAPI LocalCompact( UINT minfree )
900 return 0; /* LocalCompact does nothing in Win32 */
904 /***********************************************************************
905 * LocalFlags (KERNEL32.@)
907 * Get information about a local memory object.
910 * Value specifying allocation flags and lock count.
911 * LMEM_INVALID_HANDLE: Failure
914 * Windows memory management does not provide a separate local heap
917 UINT WINAPI LocalFlags(
918 HLOCAL handle /* [in] Handle of memory object */
920 return GlobalFlags( (HGLOBAL)handle );
924 /***********************************************************************
925 * LocalFree (KERNEL32.@)
927 * Free a local memory object.
934 * Windows memory management does not provide a separate local heap
937 HLOCAL WINAPI LocalFree(
938 HLOCAL handle /* [in] Handle of memory object */
940 return (HLOCAL)GlobalFree( (HGLOBAL)handle );
944 /***********************************************************************
945 * LocalHandle (KERNEL32.@)
947 * Get the handle associated with the pointer to a local memory block.
954 * Windows memory management does not provide a separate local heap
957 HLOCAL WINAPI LocalHandle(
958 LPCVOID ptr /* [in] Address of local memory block */
960 return (HLOCAL)GlobalHandle( ptr );
964 /***********************************************************************
965 * LocalLock (KERNEL32.@)
966 * Locks a local memory object and returns pointer to the first byte
967 * of the memory block.
974 * Windows memory management does not provide a separate local heap
977 LPVOID WINAPI LocalLock(
978 HLOCAL handle /* [in] Address of local memory object */
980 return GlobalLock( (HGLOBAL)handle );
984 /***********************************************************************
985 * LocalReAlloc (KERNEL32.@)
987 * Change the size or attributes of a local memory object.
994 * Windows memory management does not provide a separate local heap
997 HLOCAL WINAPI LocalReAlloc(
998 HLOCAL handle, /* [in] Handle of memory object */
999 SIZE_T size, /* [in] New size of block */
1000 UINT flags /* [in] How to reallocate object */
1002 return (HLOCAL)GlobalReAlloc( (HGLOBAL)handle, size, flags );
1006 /***********************************************************************
1007 * LocalShrink (KERNEL32.@)
1009 SIZE_T WINAPI LocalShrink( HGLOBAL handle, UINT newsize )
1011 return 0; /* LocalShrink does nothing in Win32 */
1015 /***********************************************************************
1016 * LocalSize (KERNEL32.@)
1018 * Get the size of a local memory object.
1025 * Windows memory management does not provide a separate local heap
1028 SIZE_T WINAPI LocalSize(
1029 HLOCAL handle /* [in] Handle of memory object */
1031 return GlobalSize( (HGLOBAL)handle );
1035 /***********************************************************************
1036 * LocalUnlock (KERNEL32.@)
1038 * Unlock a local memory object.
1041 * TRUE: Object is still locked
1042 * FALSE: Object is unlocked
1045 * Windows memory management does not provide a separate local heap
1048 BOOL WINAPI LocalUnlock(
1049 HLOCAL handle /* [in] Handle of memory object */
1051 return GlobalUnlock( (HGLOBAL)handle );
1055 /**********************************************************************
1056 * AllocMappedBuffer (KERNEL32.38)
1058 * This is an undocumented KERNEL32 function that
1059 * SMapLS's a GlobalAlloc'ed buffer.
1062 * EDI register: pointer to buffer
1065 * The buffer is preceded by 8 bytes:
1068 * edi-4 SEGPTR to buffer
1069 * edi-8 some magic Win95 needs for SUnMapLS
1070 * (we use it for the memory handle)
1072 * The SEGPTR is used by the caller!
1074 void WINAPI __regs_AllocMappedBuffer(
1075 CONTEXT86 *context /* [in] EDI register: size of buffer to allocate */
1077 HGLOBAL handle = GlobalAlloc(0, context->Edi + 8);
1078 DWORD *buffer = (DWORD *)GlobalLock(handle);
1082 if (!(ptr = MapLS(buffer + 2)))
1084 GlobalUnlock(handle);
1089 context->Eax = context->Edi = 0;
1092 buffer[0] = (DWORD)handle;
1095 context->Eax = (DWORD) ptr;
1096 context->Edi = (DWORD)(buffer + 2);
1099 #ifdef DEFINE_REGS_ENTRYPOINT
1100 DEFINE_REGS_ENTRYPOINT( AllocMappedBuffer, 0, 0 );
1103 /**********************************************************************
1104 * FreeMappedBuffer (KERNEL32.39)
1106 * Free a buffer allocated by AllocMappedBuffer
1111 void WINAPI __regs_FreeMappedBuffer(
1112 CONTEXT86 *context /* [in] EDI register: pointer to buffer */
1116 DWORD *buffer = (DWORD *)context->Edi - 2;
1120 GlobalUnlock((HGLOBAL)buffer[0]);
1121 GlobalFree((HGLOBAL)buffer[0]);
1124 #ifdef DEFINE_REGS_ENTRYPOINT
1125 DEFINE_REGS_ENTRYPOINT( FreeMappedBuffer, 0, 0 );
1128 /***********************************************************************
1129 * GlobalMemoryStatusEx (KERNEL32.@)
1130 * A version of GlobalMemoryStatus that can deal with memory over 4GB
1135 BOOL WINAPI GlobalMemoryStatusEx( LPMEMORYSTATUSEX lpmemex )
1137 static MEMORYSTATUSEX cached_memstatus;
1138 static int cache_lastchecked = 0;
1143 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
1146 int mib[2] = { CTL_HW };
1149 long pagesize,maxpages,freepages,swapspace,swapfree;
1150 struct anoninfo swapinf;
1154 if (time(NULL)==cache_lastchecked) {
1155 memcpy(lpmemex,&cached_memstatus,sizeof(*lpmemex));
1158 cache_lastchecked = time(NULL);
1160 lpmemex->dwLength = sizeof(*lpmemex);
1161 lpmemex->dwMemoryLoad = 0;
1162 lpmemex->ullTotalPhys = 16*1024*1024;
1163 lpmemex->ullAvailPhys = 16*1024*1024;
1164 lpmemex->ullTotalPageFile = 16*1024*1024;
1165 lpmemex->ullAvailPageFile = 16*1024*1024;
1168 f = fopen( "/proc/meminfo", "r" );
1172 int total, used, free, shared, buffers, cached;
1174 lpmemex->ullTotalPhys = lpmemex->ullAvailPhys = 0;
1175 lpmemex->ullTotalPageFile = lpmemex->ullAvailPageFile = 0;
1176 while (fgets( buffer, sizeof(buffer), f ))
1178 /* old style /proc/meminfo ... */
1179 if (sscanf( buffer, "Mem: %d %d %d %d %d %d", &total, &used, &free, &shared, &buffers, &cached ))
1181 lpmemex->ullTotalPhys += total;
1182 lpmemex->ullAvailPhys += free + buffers + cached;
1184 if (sscanf( buffer, "Swap: %d %d %d", &total, &used, &free ))
1186 lpmemex->ullTotalPageFile += total;
1187 lpmemex->ullAvailPageFile += free;
1190 /* new style /proc/meminfo ... */
1191 if (sscanf(buffer, "MemTotal: %d", &total))
1192 lpmemex->ullTotalPhys = total*1024;
1193 if (sscanf(buffer, "MemFree: %d", &free))
1194 lpmemex->ullAvailPhys = free*1024;
1195 if (sscanf(buffer, "SwapTotal: %d", &total))
1196 lpmemex->ullTotalPageFile = total*1024;
1197 if (sscanf(buffer, "SwapFree: %d", &free))
1198 lpmemex->ullAvailPageFile = free*1024;
1199 if (sscanf(buffer, "Buffers: %d", &buffers))
1200 lpmemex->ullAvailPhys += buffers*1024;
1201 if (sscanf(buffer, "Cached: %d", &cached))
1202 lpmemex->ullAvailPhys += cached*1024;
1206 if (lpmemex->ullTotalPhys)
1208 DWORDLONG TotalPhysical = lpmemex->ullTotalPhys+lpmemex->ullTotalPageFile;
1209 DWORDLONG AvailPhysical = lpmemex->ullAvailPhys+lpmemex->ullAvailPageFile;
1210 lpmemex->dwMemoryLoad = (TotalPhysical-AvailPhysical)
1211 / (TotalPhysical / 100);
1214 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
1215 mib[1] = HW_PHYSMEM;
1216 sysctl(mib, 2, NULL, &size_sys, NULL, 0);
1217 tmp = malloc(size_sys * sizeof(int));
1218 sysctl(mib, 2, tmp, &size_sys, NULL, 0);
1221 lpmemex->ullTotalPhys = *tmp;
1223 mib[1] = HW_USERMEM;
1224 sysctl(mib, 2, NULL, &size_sys, NULL, 0);
1225 tmp = malloc(size_sys * sizeof(int));
1226 sysctl(mib, 2, tmp, &size_sys, NULL, 0);
1229 lpmemex->ullAvailPhys = *tmp;
1230 lpmemex->ullTotalPageFile = *tmp;
1231 lpmemex->ullAvailPageFile = *tmp;
1232 lpmemex->dwMemoryLoad = lpmemex->ullTotalPhys - lpmemex->ullAvailPhys;
1235 lpmemex->ullAvailPhys = lpmemex->ullTotalPhys;
1236 lpmemex->ullTotalPageFile = lpmemex->ullTotalPhys;
1237 lpmemex->ullAvailPageFile = lpmemex->ullTotalPhys;
1238 lpmemex->dwMemoryLoad = 0;
1243 #elif defined ( sun )
1244 pagesize=sysconf(_SC_PAGESIZE);
1245 maxpages=sysconf(_SC_PHYS_PAGES);
1246 freepages=sysconf(_SC_AVPHYS_PAGES);
1247 rval=swapctl(SC_AINFO, &swapinf);
1250 swapspace=swapinf.ani_max*pagesize;
1251 swapfree=swapinf.ani_free*pagesize;
1255 WARN("Swap size cannot be determined , assuming equal to physical memory\n");
1256 swapspace=maxpages*pagesize;
1257 swapfree=maxpages*pagesize;
1259 lpmemex->ullTotalPhys=pagesize*maxpages;
1260 lpmemex->ullAvailPhys = pagesize*freepages;
1261 lpmemex->ullTotalPageFile = swapspace;
1262 lpmemex->ullAvailPageFile = swapfree;
1263 lpmemex->dwMemoryLoad = lpmemex->ullTotalPhys - lpmemex->ullAvailPhys;
1266 /* Project2k refuses to start if it sees less than 1Mb of free swap */
1267 if (lpmemex->ullTotalPageFile < lpmemex->ullTotalPhys)
1268 lpmemex->ullTotalPageFile = lpmemex->ullTotalPhys;
1269 if (lpmemex->ullAvailPageFile < lpmemex->ullAvailPhys)
1270 lpmemex->ullAvailPageFile = lpmemex->ullAvailPhys;
1272 /* FIXME: should do something for other systems */
1274 lpmemex->ullTotalVirtual = (char*)si.lpMaximumApplicationAddress-(char*)si.lpMinimumApplicationAddress;
1275 /* FIXME: we should track down all the already allocated VM pages and substract them, for now arbitrarily remove 64KB so that it matches NT */
1276 lpmemex->ullAvailVirtual = lpmemex->ullTotalVirtual-64*1024;
1278 /* MSDN says about AvailExtendedVirtual: Size of unreserved and uncommitted
1279 memory in the extended portion of the virtual address space of the calling
1281 However, I don't know what this means, so set it to zero :(
1283 lpmemex->ullAvailExtendedVirtual = 0;
1285 memcpy(&cached_memstatus,lpmemex,sizeof(*lpmemex));
1287 TRACE("<-- LPMEMORYSTATUSEX: dwLength %ld, dwMemoryLoad %ld, ullTotalPhys %s, ullAvailPhys %s,"
1288 " ullTotalPageFile %s, ullAvailPageFile %s, ullTotalVirtual %s, ullAvailVirtual %s\n",
1289 lpmemex->dwLength, lpmemex->dwMemoryLoad, wine_dbgstr_longlong(lpmemex->ullTotalPhys),
1290 wine_dbgstr_longlong(lpmemex->ullAvailPhys), wine_dbgstr_longlong(lpmemex->ullTotalPageFile),
1291 wine_dbgstr_longlong(lpmemex->ullAvailPageFile), wine_dbgstr_longlong(lpmemex->ullTotalVirtual),
1292 wine_dbgstr_longlong(lpmemex->ullAvailVirtual) );
1297 /***********************************************************************
1298 * GlobalMemoryStatus (KERNEL32.@)
1299 * Provides information about the status of the memory, so apps can tell
1300 * roughly how much they are able to allocate
1305 VOID WINAPI GlobalMemoryStatus( LPMEMORYSTATUS lpBuffer )
1307 MEMORYSTATUSEX memstatus;
1308 OSVERSIONINFOW osver;
1310 /* Because GlobalMemoryStatus is identical to GlobalMemoryStatusEX save
1311 for one extra field in the struct, and the lack of a bug, we simply
1312 call GlobalMemoryStatusEx and copy the values across. */
1313 GlobalMemoryStatusEx(&memstatus);
1315 lpBuffer->dwLength = sizeof(*lpBuffer);
1316 lpBuffer->dwMemoryLoad = memstatus.dwMemoryLoad;
1318 /* Windows 2000 and later report -1 when values are greater than 4 Gb.
1319 * NT reports values modulo 4 Gb.
1320 * Values between 2 Gb and 4 Gb are rounded down to 2 Gb.
1323 osver.dwOSVersionInfoSize = sizeof(osver);
1324 GetVersionExW(&osver);
1326 if ( osver.dwMajorVersion >= 5 )
1328 lpBuffer->dwTotalPhys = (memstatus.ullTotalPhys > MAXDWORD) ? MAXDWORD :
1329 (memstatus.ullTotalPhys > MAXLONG) ? MAXLONG : memstatus.ullTotalPhys;
1330 lpBuffer->dwAvailPhys = (memstatus.ullAvailPhys > MAXDWORD) ? MAXDWORD :
1331 (memstatus.ullAvailPhys > MAXLONG) ? MAXLONG : memstatus.ullAvailPhys;
1332 lpBuffer->dwTotalPageFile = (memstatus.ullTotalPageFile > MAXDWORD) ? MAXDWORD :
1333 (memstatus.ullTotalPageFile > MAXLONG) ? MAXLONG : memstatus.ullTotalPageFile;
1334 lpBuffer->dwAvailPageFile = (memstatus.ullAvailPageFile > MAXDWORD) ? MAXDWORD :
1335 (memstatus.ullAvailPageFile > MAXLONG) ? MAXLONG : memstatus.ullAvailPageFile;
1336 lpBuffer->dwTotalVirtual = (memstatus.ullTotalVirtual > MAXDWORD) ? MAXDWORD :
1337 (memstatus.ullTotalVirtual > MAXLONG) ? MAXLONG : memstatus.ullTotalVirtual;
1338 lpBuffer->dwAvailVirtual = (memstatus.ullAvailVirtual > MAXDWORD) ? MAXDWORD :
1339 (memstatus.ullAvailVirtual > MAXLONG) ? MAXLONG : memstatus.ullAvailVirtual;
1341 else /* duplicate NT bug */
1343 lpBuffer->dwTotalPhys = (memstatus.ullTotalPhys > MAXDWORD) ? memstatus.ullTotalPhys :
1344 (memstatus.ullTotalPhys > MAXLONG) ? MAXLONG : memstatus.ullTotalPhys;
1345 lpBuffer->dwAvailPhys = (memstatus.ullAvailPhys > MAXDWORD) ? memstatus.ullAvailPhys :
1346 (memstatus.ullAvailPhys > MAXLONG) ? MAXLONG : memstatus.ullAvailPhys;
1347 lpBuffer->dwTotalPageFile = (memstatus.ullTotalPageFile > MAXDWORD) ? memstatus.ullTotalPageFile :
1348 (memstatus.ullTotalPageFile > MAXLONG) ? MAXLONG : memstatus.ullTotalPageFile;
1349 lpBuffer->dwAvailPageFile = (memstatus.ullAvailPageFile > MAXDWORD) ? memstatus.ullAvailPageFile :
1350 (memstatus.ullAvailPageFile > MAXLONG) ? MAXLONG : memstatus.ullAvailPageFile;
1351 lpBuffer->dwTotalVirtual = (memstatus.ullTotalVirtual > MAXDWORD) ? memstatus.ullTotalVirtual :
1352 (memstatus.ullTotalVirtual > MAXLONG) ? MAXLONG : memstatus.ullTotalVirtual;
1353 lpBuffer->dwAvailVirtual = (memstatus.ullAvailVirtual > MAXDWORD) ? memstatus.ullAvailVirtual :
1354 (memstatus.ullAvailVirtual > MAXLONG) ? MAXLONG : memstatus.ullAvailVirtual;
1357 /* work around for broken photoshop 4 installer */
1358 if ( lpBuffer->dwAvailPhys + lpBuffer->dwAvailPageFile >= 2U*1024*1024*1024)
1359 lpBuffer->dwAvailPageFile = 2U*1024*1024*1024 - lpBuffer->dwAvailPhys - 1;