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>
49 #include "wine/exception.h"
50 #include "wine/debug.h"
52 WINE_DEFAULT_DEBUG_CHANNEL(heap);
54 /* address where we try to map the system heap */
55 #define SYSTEM_HEAP_BASE ((void*)0x80000000)
56 #define SYSTEM_HEAP_SIZE 0x1000000 /* Default heap size = 16Mb */
58 static HANDLE systemHeap; /* globally shared heap */
62 /* filter for page-fault exceptions */
63 /* It is possible for a bogus global pointer to cause a */
64 /* page zero reference, so I include EXCEPTION_PRIV_INSTRUCTION too. */
65 static WINE_EXCEPTION_FILTER(page_fault)
67 switch (GetExceptionCode()) {
68 case (EXCEPTION_ACCESS_VIOLATION):
69 case (EXCEPTION_PRIV_INSTRUCTION):
70 return EXCEPTION_EXECUTE_HANDLER;
72 return EXCEPTION_CONTINUE_SEARCH;
76 /***********************************************************************
77 * HEAP_CreateSystemHeap
79 * Create the system heap.
81 inline static HANDLE HEAP_CreateSystemHeap(void)
87 /* create the system heap event first */
88 event = CreateEventA( NULL, TRUE, FALSE, "__wine_system_heap_event" );
90 if (!(map = CreateFileMappingA( INVALID_HANDLE_VALUE, NULL, SEC_COMMIT | PAGE_READWRITE,
91 0, SYSTEM_HEAP_SIZE, "__wine_system_heap" ))) return 0;
92 created = (GetLastError() != ERROR_ALREADY_EXISTS);
94 if (!(base = MapViewOfFileEx( map, FILE_MAP_ALL_ACCESS, 0, 0, 0, SYSTEM_HEAP_BASE )))
96 /* pre-defined address not available */
97 ERR( "system heap base address %p not available\n", SYSTEM_HEAP_BASE );
101 if (created) /* newly created heap */
103 systemHeap = RtlCreateHeap( HEAP_SHARED, base, SYSTEM_HEAP_SIZE,
104 SYSTEM_HEAP_SIZE, NULL, NULL );
109 /* wait for the heap to be initialized */
110 WaitForSingleObject( event, INFINITE );
111 systemHeap = (HANDLE)base;
118 /***********************************************************************
119 * HeapCreate (KERNEL32.@)
121 * Handle of heap: Success
124 HANDLE WINAPI HeapCreate(
125 DWORD flags, /* [in] Heap allocation flag */
126 SIZE_T initialSize, /* [in] Initial heap size */
127 SIZE_T maxSize /* [in] Maximum heap size */
131 if ( flags & HEAP_SHARED )
133 if (!systemHeap) HEAP_CreateSystemHeap();
134 else WARN( "Shared Heap requested, returning system heap.\n" );
139 ret = RtlCreateHeap( flags, NULL, maxSize, initialSize, NULL, NULL );
140 if (!ret) SetLastError( ERROR_NOT_ENOUGH_MEMORY );
146 /***********************************************************************
147 * HeapDestroy (KERNEL32.@)
152 BOOL WINAPI HeapDestroy( HANDLE heap /* [in] Handle of heap */ )
154 if (heap == systemHeap)
156 WARN( "attempt to destroy system heap, returning TRUE!\n" );
159 if (!RtlDestroyHeap( heap )) return TRUE;
160 SetLastError( ERROR_INVALID_HANDLE );
165 /***********************************************************************
166 * HeapCompact (KERNEL32.@)
168 SIZE_T WINAPI HeapCompact( HANDLE heap, DWORD flags )
170 return RtlCompactHeap( heap, flags );
174 /***********************************************************************
175 * HeapValidate (KERNEL32.@)
176 * Validates a specified heap.
185 BOOL WINAPI HeapValidate(
186 HANDLE heap, /* [in] Handle to the heap */
187 DWORD flags, /* [in] Bit flags that control access during operation */
188 LPCVOID block /* [in] Optional pointer to memory block to validate */
190 return RtlValidateHeap( heap, flags, block );
194 /***********************************************************************
195 * HeapWalk (KERNEL32.@)
196 * Enumerates the memory blocks in a specified heap.
199 * - handling of PROCESS_HEAP_ENTRY_MOVEABLE and
200 * PROCESS_HEAP_ENTRY_DDESHARE (needs heap.c support)
206 BOOL WINAPI HeapWalk(
207 HANDLE heap, /* [in] Handle to heap to enumerate */
208 LPPROCESS_HEAP_ENTRY entry /* [out] Pointer to structure of enumeration info */
210 NTSTATUS ret = RtlWalkHeap( heap, entry );
211 if (ret) SetLastError( RtlNtStatusToDosError(ret) );
216 /***********************************************************************
217 * HeapLock (KERNEL32.@)
218 * Attempts to acquire the critical section object for a specified heap.
224 BOOL WINAPI HeapLock(
225 HANDLE heap /* [in] Handle of heap to lock for exclusive access */
227 return RtlLockHeap( heap );
231 /***********************************************************************
232 * HeapUnlock (KERNEL32.@)
233 * Releases ownership of the critical section object.
239 BOOL WINAPI HeapUnlock(
240 HANDLE heap /* [in] Handle to the heap to unlock */
242 return RtlUnlockHeap( heap );
246 /***********************************************************************
247 * GetProcessHeap (KERNEL32.@)
249 HANDLE WINAPI GetProcessHeap(void)
251 return NtCurrentTeb()->Peb->ProcessHeap;
255 /***********************************************************************
256 * GetProcessHeaps (KERNEL32.@)
258 DWORD WINAPI GetProcessHeaps( DWORD count, HANDLE *heaps )
260 return RtlGetProcessHeaps( count, heaps );
264 /* These are needed so that we can call the functions from inside kernel itself */
266 LPVOID WINAPI HeapAlloc( HANDLE heap, DWORD flags, SIZE_T size )
268 return RtlAllocateHeap( heap, flags, size );
271 BOOL WINAPI HeapFree( HANDLE heap, DWORD flags, LPVOID ptr )
273 return RtlFreeHeap( heap, flags, ptr );
276 LPVOID WINAPI HeapReAlloc( HANDLE heap, DWORD flags, LPVOID ptr, SIZE_T size )
278 return RtlReAllocateHeap( heap, flags, ptr, size );
281 SIZE_T WINAPI HeapSize( HANDLE heap, DWORD flags, LPVOID ptr )
283 return RtlSizeHeap( heap, flags, ptr );
287 * Win32 Global heap functions (GlobalXXX).
288 * These functions included in Win32 for compatibility with 16 bit Windows
289 * Especially the moveable blocks and handles are oldish.
290 * But the ability to directly allocate memory with GPTR and LPTR is widely
293 * The handle stuff looks horrible, but it's implemented almost like Win95
298 #define MAGIC_GLOBAL_USED 0x5342
299 #define GLOBAL_LOCK_MAX 0xFF
300 #define HANDLE_TO_INTERN(h) ((PGLOBAL32_INTERN)(((char *)(h))-2))
301 #define INTERN_TO_HANDLE(i) ((HGLOBAL) &((i)->Pointer))
302 #define POINTER_TO_HANDLE(p) (*(((HGLOBAL *)(p))-2))
303 #define ISHANDLE(h) (((ULONG_PTR)(h)&2)!=0)
304 #define ISPOINTER(h) (((ULONG_PTR)(h)&2)==0)
305 /* align the storage needed for the HGLOBAL on an 8byte boundary thus
306 * GlobalAlloc/GlobalReAlloc'ing with GMEM_MOVEABLE of memory with
307 * size = 8*k, where k=1,2,3,... alloc's exactly the given size.
308 * The Minolta DiMAGE Image Viewer heavily relies on this, corrupting
309 * the output jpeg's > 1 MB if not */
310 #define HGLOBAL_STORAGE 8 /* sizeof(HGLOBAL)*2 */
312 #include "pshpack1.h"
314 typedef struct __GLOBAL32_INTERN
320 } GLOBAL32_INTERN, *PGLOBAL32_INTERN;
324 /***********************************************************************
325 * GlobalAlloc (KERNEL32.@)
330 HGLOBAL WINAPI GlobalAlloc(
331 UINT flags, /* [in] Object allocation attributes */
332 SIZE_T size /* [in] Number of bytes to allocate */
334 PGLOBAL32_INTERN pintern;
338 if(flags&GMEM_ZEROINIT)
339 hpflags=HEAP_ZERO_MEMORY;
343 TRACE("() flags=%04x\n", flags );
345 if((flags & GMEM_MOVEABLE)==0) /* POINTER */
347 palloc=HeapAlloc(GetProcessHeap(), hpflags, size);
348 return (HGLOBAL) palloc;
352 RtlLockHeap(GetProcessHeap());
354 pintern = HeapAlloc(GetProcessHeap(), 0, sizeof(GLOBAL32_INTERN));
357 pintern->Magic = MAGIC_GLOBAL_USED;
358 pintern->Flags = flags >> 8;
359 pintern->LockCount = 0;
363 palloc = HeapAlloc(GetProcessHeap(), hpflags, size+HGLOBAL_STORAGE);
366 HeapFree(GetProcessHeap(), 0, pintern);
371 *(HGLOBAL *)palloc = INTERN_TO_HANDLE(pintern);
372 pintern->Pointer = (char *)palloc + HGLOBAL_STORAGE;
376 pintern->Pointer = NULL;
379 RtlUnlockHeap(GetProcessHeap());
380 return pintern ? INTERN_TO_HANDLE(pintern) : 0;
385 /***********************************************************************
386 * GlobalLock (KERNEL32.@)
388 * Pointer to first byte of block
391 LPVOID WINAPI GlobalLock(
392 HGLOBAL hmem /* [in] Handle of global memory object */
395 PGLOBAL32_INTERN pintern;
399 return IsBadReadPtr(hmem, 1) ? NULL : hmem;
401 RtlLockHeap(GetProcessHeap());
404 pintern = HANDLE_TO_INTERN(hmem);
405 if (pintern->Magic == MAGIC_GLOBAL_USED)
407 if (pintern->LockCount < GLOBAL_LOCK_MAX)
408 pintern->LockCount++;
409 palloc = pintern->Pointer;
413 WARN("invalid handle %p\n", hmem);
415 SetLastError(ERROR_INVALID_HANDLE);
420 WARN("page fault on %p\n", hmem);
422 SetLastError(ERROR_INVALID_HANDLE);
425 RtlUnlockHeap(GetProcessHeap());
430 /***********************************************************************
431 * GlobalUnlock (KERNEL32.@)
433 * TRUE: Object is still locked
434 * FALSE: Object is unlocked
436 BOOL WINAPI GlobalUnlock(
437 HGLOBAL hmem /* [in] Handle of global memory object */
439 PGLOBAL32_INTERN pintern;
442 if (ISPOINTER(hmem)) return FALSE;
444 RtlLockHeap(GetProcessHeap());
447 pintern=HANDLE_TO_INTERN(hmem);
448 if(pintern->Magic==MAGIC_GLOBAL_USED)
450 if((pintern->LockCount<GLOBAL_LOCK_MAX)&&(pintern->LockCount>0))
451 pintern->LockCount--;
453 locked = (pintern->LockCount != 0);
454 if (!locked) SetLastError(NO_ERROR);
458 WARN("invalid handle\n");
459 SetLastError(ERROR_INVALID_HANDLE);
465 ERR("page fault occurred ! Caused by bug ?\n");
466 SetLastError( ERROR_INVALID_PARAMETER );
470 RtlUnlockHeap(GetProcessHeap());
475 /***********************************************************************
476 * GlobalHandle (KERNEL32.@)
477 * Returns the handle associated with the specified pointer.
483 HGLOBAL WINAPI GlobalHandle(
484 LPCVOID pmem /* [in] Pointer to global memory block */
487 PGLOBAL32_INTERN maybe_intern;
492 SetLastError( ERROR_INVALID_PARAMETER );
496 RtlLockHeap(GetProcessHeap());
501 /* note that if pmem is a pointer to a a block allocated by */
502 /* GlobalAlloc with GMEM_MOVEABLE then magic test in HeapValidate */
504 if (ISPOINTER(pmem)) {
505 if (HeapValidate( GetProcessHeap(), 0, pmem )) {
506 handle = (HGLOBAL)pmem; /* valid fixed block */
509 handle = POINTER_TO_HANDLE(pmem);
511 handle = (HGLOBAL)pmem;
513 /* Now test handle either passed in or retrieved from pointer */
514 maybe_intern = HANDLE_TO_INTERN( handle );
515 if (maybe_intern->Magic == MAGIC_GLOBAL_USED) {
516 test = maybe_intern->Pointer;
517 if (HeapValidate( GetProcessHeap(), 0, (const char *)test - HGLOBAL_STORAGE ) && /* obj(-handle) valid arena? */
518 HeapValidate( GetProcessHeap(), 0, maybe_intern )) /* intern valid arena? */
519 break; /* valid moveable block */
522 SetLastError( ERROR_INVALID_HANDLE );
526 SetLastError( ERROR_INVALID_HANDLE );
530 RtlUnlockHeap(GetProcessHeap());
536 /***********************************************************************
537 * GlobalReAlloc (KERNEL32.@)
542 HGLOBAL WINAPI GlobalReAlloc(
543 HGLOBAL hmem, /* [in] Handle of global memory object */
544 SIZE_T size, /* [in] New size of block */
545 UINT flags /* [in] How to reallocate object */
549 PGLOBAL32_INTERN pintern;
550 DWORD heap_flags = (flags & GMEM_ZEROINIT) ? HEAP_ZERO_MEMORY : 0;
553 RtlLockHeap(GetProcessHeap());
554 if(flags & GMEM_MODIFY) /* modify flags */
556 if( ISPOINTER(hmem) && (flags & GMEM_MOVEABLE))
558 /* make a fixed block moveable
559 * actually only NT is able to do this. But it's soo simple
563 WARN("GlobalReAlloc with null handle!\n");
564 SetLastError( ERROR_NOACCESS );
569 size = HeapSize(GetProcessHeap(), 0, (LPVOID)hmem);
570 hnew = GlobalAlloc(flags, size);
571 palloc = GlobalLock(hnew);
572 memcpy(palloc, (LPVOID)hmem, size);
577 else if( ISPOINTER(hmem) &&(flags & GMEM_DISCARDABLE))
579 /* change the flags to make our block "discardable" */
580 pintern=HANDLE_TO_INTERN(hmem);
581 pintern->Flags = pintern->Flags | (GMEM_DISCARDABLE >> 8);
586 SetLastError(ERROR_INVALID_PARAMETER);
594 /* reallocate fixed memory */
595 hnew=HeapReAlloc(GetProcessHeap(), heap_flags, hmem, size);
599 /* reallocate a moveable block */
600 pintern=HANDLE_TO_INTERN(hmem);
603 /* Apparently Windows doesn't care whether the handle is locked at this point */
604 /* See also the same comment in GlobalFree() */
605 if(pintern->LockCount>1) {
606 ERR("handle 0x%08lx is still locked, cannot realloc!\n",(DWORD)hmem);
607 SetLastError(ERROR_INVALID_HANDLE);
615 if((palloc = HeapReAlloc(GetProcessHeap(), heap_flags,
616 (char *) pintern->Pointer-HGLOBAL_STORAGE,
617 size+HGLOBAL_STORAGE)) == NULL)
618 hnew = 0; /* Block still valid */
620 pintern->Pointer = (char *)palloc+HGLOBAL_STORAGE;
624 if((palloc=HeapAlloc(GetProcessHeap(), heap_flags, size+HGLOBAL_STORAGE))
629 *(HGLOBAL *)palloc = hmem;
630 pintern->Pointer = (char *)palloc + HGLOBAL_STORAGE;
638 HeapFree(GetProcessHeap(), 0, (char *) pintern->Pointer-HGLOBAL_STORAGE);
639 pintern->Pointer=NULL;
644 RtlUnlockHeap(GetProcessHeap());
649 /***********************************************************************
650 * GlobalFree (KERNEL32.@)
655 HGLOBAL WINAPI GlobalFree(
656 HGLOBAL hmem /* [in] Handle of global memory object */
658 PGLOBAL32_INTERN pintern;
661 RtlLockHeap(GetProcessHeap());
665 if(ISPOINTER(hmem)) /* POINTER */
667 if(!HeapFree(GetProcessHeap(), 0, (LPVOID) hmem)) hmem = 0;
671 pintern=HANDLE_TO_INTERN(hmem);
673 if(pintern->Magic==MAGIC_GLOBAL_USED)
676 /* WIN98 does not make this test. That is you can free a */
677 /* block you have not unlocked. Go figure!! */
678 /* if(pintern->LockCount!=0) */
679 /* SetLastError(ERROR_INVALID_HANDLE); */
682 if(!HeapFree(GetProcessHeap(), 0, (char *)(pintern->Pointer)-HGLOBAL_STORAGE))
684 if(!HeapFree(GetProcessHeap(), 0, pintern))
691 ERR("page fault occurred ! Caused by bug ?\n");
692 SetLastError( ERROR_INVALID_PARAMETER );
696 RtlUnlockHeap(GetProcessHeap());
701 /***********************************************************************
702 * GlobalSize (KERNEL32.@)
704 * Size in bytes of the global memory object
707 SIZE_T WINAPI GlobalSize(
708 HGLOBAL hmem /* [in] Handle of global memory object */
711 PGLOBAL32_INTERN pintern;
717 retval=HeapSize(GetProcessHeap(), 0, (LPVOID) hmem);
721 RtlLockHeap(GetProcessHeap());
722 pintern=HANDLE_TO_INTERN(hmem);
724 if(pintern->Magic==MAGIC_GLOBAL_USED)
726 if (!pintern->Pointer) /* handle case of GlobalAlloc( ??,0) */
730 retval = HeapSize(GetProcessHeap(), 0,
731 (char *)(pintern->Pointer) - HGLOBAL_STORAGE );
732 if (retval != (DWORD)-1) retval -= HGLOBAL_STORAGE;
737 WARN("invalid handle\n");
740 RtlUnlockHeap(GetProcessHeap());
742 /* HeapSize returns 0xffffffff on failure */
743 if (retval == 0xffffffff) retval = 0;
748 /***********************************************************************
749 * GlobalWire (KERNEL32.@)
751 LPVOID WINAPI GlobalWire(HGLOBAL hmem)
753 return GlobalLock( hmem );
757 /***********************************************************************
758 * GlobalUnWire (KERNEL32.@)
760 BOOL WINAPI GlobalUnWire(HGLOBAL hmem)
762 return GlobalUnlock( hmem);
766 /***********************************************************************
767 * GlobalFix (KERNEL32.@)
769 VOID WINAPI GlobalFix(HGLOBAL hmem)
775 /***********************************************************************
776 * GlobalUnfix (KERNEL32.@)
778 VOID WINAPI GlobalUnfix(HGLOBAL hmem)
784 /***********************************************************************
785 * GlobalFlags (KERNEL32.@)
786 * Returns information about the specified global memory object
789 * Should this return GMEM_INVALID_HANDLE on invalid handle?
792 * Value specifying allocation flags and lock count
793 * GMEM_INVALID_HANDLE: Failure
795 UINT WINAPI GlobalFlags(
796 HGLOBAL hmem /* [in] Handle to global memory object */
799 PGLOBAL32_INTERN pintern;
807 RtlLockHeap(GetProcessHeap());
808 pintern=HANDLE_TO_INTERN(hmem);
809 if(pintern->Magic==MAGIC_GLOBAL_USED)
811 retval=pintern->LockCount + (pintern->Flags<<8);
812 if(pintern->Pointer==0)
813 retval|= GMEM_DISCARDED;
817 WARN("Invalid handle: %p\n", hmem);
820 RtlUnlockHeap(GetProcessHeap());
826 /***********************************************************************
827 * GlobalCompact (KERNEL32.@)
829 SIZE_T WINAPI GlobalCompact( DWORD minfree )
831 return 0; /* GlobalCompact does nothing in Win32 */
835 /***********************************************************************
836 * LocalAlloc (KERNEL32.@)
841 HLOCAL WINAPI LocalAlloc(
842 UINT flags, /* [in] Allocation attributes */
843 SIZE_T size /* [in] Number of bytes to allocate */
845 return (HLOCAL)GlobalAlloc( flags, size );
849 /***********************************************************************
850 * LocalCompact (KERNEL32.@)
852 SIZE_T WINAPI LocalCompact( UINT minfree )
854 return 0; /* LocalCompact does nothing in Win32 */
858 /***********************************************************************
859 * LocalFlags (KERNEL32.@)
861 * Value specifying allocation flags and lock count.
862 * LMEM_INVALID_HANDLE: Failure
864 UINT WINAPI LocalFlags(
865 HLOCAL handle /* [in] Handle of memory object */
867 return GlobalFlags( (HGLOBAL)handle );
871 /***********************************************************************
872 * LocalFree (KERNEL32.@)
877 HLOCAL WINAPI LocalFree(
878 HLOCAL handle /* [in] Handle of memory object */
880 return (HLOCAL)GlobalFree( (HGLOBAL)handle );
884 /***********************************************************************
885 * LocalHandle (KERNEL32.@)
890 HLOCAL WINAPI LocalHandle(
891 LPCVOID ptr /* [in] Address of local memory object */
893 return (HLOCAL)GlobalHandle( ptr );
897 /***********************************************************************
898 * LocalLock (KERNEL32.@)
899 * Locks a local memory object and returns pointer to the first byte
900 * of the memory block.
906 LPVOID WINAPI LocalLock(
907 HLOCAL handle /* [in] Address of local memory object */
909 return GlobalLock( (HGLOBAL)handle );
913 /***********************************************************************
914 * LocalReAlloc (KERNEL32.@)
919 HLOCAL WINAPI LocalReAlloc(
920 HLOCAL handle, /* [in] Handle of memory object */
921 SIZE_T size, /* [in] New size of block */
922 UINT flags /* [in] How to reallocate object */
924 return (HLOCAL)GlobalReAlloc( (HGLOBAL)handle, size, flags );
928 /***********************************************************************
929 * LocalShrink (KERNEL32.@)
931 SIZE_T WINAPI LocalShrink( HGLOBAL handle, UINT newsize )
933 return 0; /* LocalShrink does nothing in Win32 */
937 /***********************************************************************
938 * LocalSize (KERNEL32.@)
943 SIZE_T WINAPI LocalSize(
944 HLOCAL handle /* [in] Handle of memory object */
946 return GlobalSize( (HGLOBAL)handle );
950 /***********************************************************************
951 * LocalUnlock (KERNEL32.@)
953 * TRUE: Object is still locked
954 * FALSE: Object is unlocked
956 BOOL WINAPI LocalUnlock(
957 HLOCAL handle /* [in] Handle of memory object */
959 return GlobalUnlock( (HGLOBAL)handle );
963 /**********************************************************************
964 * AllocMappedBuffer (KERNEL32.38)
966 * This is an undocumented KERNEL32 function that
967 * SMapLS's a GlobalAlloc'ed buffer.
969 * Input: EDI register: size of buffer to allocate
970 * Output: EDI register: pointer to buffer
972 * Note: The buffer is preceded by 8 bytes:
975 * edi-4 SEGPTR to buffer
976 * edi-8 some magic Win95 needs for SUnMapLS
977 * (we use it for the memory handle)
979 * The SEGPTR is used by the caller!
981 void WINAPI __regs_AllocMappedBuffer( CONTEXT86 *context )
983 HGLOBAL handle = GlobalAlloc(0, context->Edi + 8);
984 DWORD *buffer = (DWORD *)GlobalLock(handle);
988 if (!(ptr = MapLS(buffer + 2)))
990 GlobalUnlock(handle);
995 context->Eax = context->Edi = 0;
998 buffer[0] = (DWORD)handle;
1001 context->Eax = (DWORD) ptr;
1002 context->Edi = (DWORD)(buffer + 2);
1005 #ifdef DEFINE_REGS_ENTRYPOINT
1006 DEFINE_REGS_ENTRYPOINT( AllocMappedBuffer, 0, 0 );
1009 /**********************************************************************
1010 * FreeMappedBuffer (KERNEL32.39)
1012 * Free a buffer allocated by AllocMappedBuffer
1014 * Input: EDI register: pointer to buffer
1016 void WINAPI __regs_FreeMappedBuffer( CONTEXT86 *context )
1020 DWORD *buffer = (DWORD *)context->Edi - 2;
1024 GlobalUnlock((HGLOBAL)buffer[0]);
1025 GlobalFree((HGLOBAL)buffer[0]);
1028 #ifdef DEFINE_REGS_ENTRYPOINT
1029 DEFINE_REGS_ENTRYPOINT( FreeMappedBuffer, 0, 0 );
1032 /***********************************************************************
1033 * GlobalMemoryStatusEx (KERNEL32.@)
1034 * A version of GlobalMemoryStatus that can deal with memory over 4GB
1039 BOOL WINAPI GlobalMemoryStatusEx( LPMEMORYSTATUSEX lpmemex )
1041 static MEMORYSTATUSEX cached_memstatus;
1042 static int cache_lastchecked = 0;
1047 #if defined(__FreeBSD__) || defined(__NetBSD__)
1050 int mib[2] = { CTL_HW };
1052 if (time(NULL)==cache_lastchecked) {
1053 memcpy(lpmemex,&cached_memstatus,sizeof(*lpmemex));
1056 cache_lastchecked = time(NULL);
1058 lpmemex->dwLength = sizeof(*lpmemex);
1059 lpmemex->dwMemoryLoad = 0;
1060 lpmemex->ullTotalPhys = 16*1024*1024;
1061 lpmemex->ullAvailPhys = 16*1024*1024;
1062 lpmemex->ullTotalPageFile = 16*1024*1024;
1063 lpmemex->ullAvailPageFile = 16*1024*1024;
1066 f = fopen( "/proc/meminfo", "r" );
1070 int total, used, free, shared, buffers, cached;
1072 lpmemex->ullTotalPhys = lpmemex->ullAvailPhys = 0;
1073 lpmemex->ullTotalPageFile = lpmemex->ullAvailPageFile = 0;
1074 while (fgets( buffer, sizeof(buffer), f ))
1076 /* old style /proc/meminfo ... */
1077 if (sscanf( buffer, "Mem: %d %d %d %d %d %d", &total, &used, &free, &shared, &buffers, &cached ))
1079 lpmemex->ullTotalPhys += total;
1080 lpmemex->ullAvailPhys += free + buffers + cached;
1082 if (sscanf( buffer, "Swap: %d %d %d", &total, &used, &free ))
1084 lpmemex->ullTotalPageFile += total;
1085 lpmemex->ullAvailPageFile += free;
1088 /* new style /proc/meminfo ... */
1089 if (sscanf(buffer, "MemTotal: %d", &total))
1090 lpmemex->ullTotalPhys = total*1024;
1091 if (sscanf(buffer, "MemFree: %d", &free))
1092 lpmemex->ullAvailPhys = free*1024;
1093 if (sscanf(buffer, "SwapTotal: %d", &total))
1094 lpmemex->ullTotalPageFile = total*1024;
1095 if (sscanf(buffer, "SwapFree: %d", &free))
1096 lpmemex->ullAvailPageFile = free*1024;
1097 if (sscanf(buffer, "Buffers: %d", &buffers))
1098 lpmemex->ullAvailPhys += buffers*1024;
1099 if (sscanf(buffer, "Cached: %d", &cached))
1100 lpmemex->ullAvailPhys += cached*1024;
1104 if (lpmemex->ullTotalPhys)
1106 DWORDLONG TotalPhysical = lpmemex->ullTotalPhys+lpmemex->ullTotalPageFile;
1107 DWORDLONG AvailPhysical = lpmemex->ullAvailPhys+lpmemex->ullAvailPageFile;
1108 lpmemex->dwMemoryLoad = (TotalPhysical-AvailPhysical)
1109 / (TotalPhysical / 100);
1112 #elif defined(__FreeBSD__) || defined(__NetBSD__)
1113 mib[1] = HW_PHYSMEM;
1114 sysctl(mib, 2, NULL, &size_sys, NULL, 0);
1115 tmp = malloc(size_sys * sizeof(int));
1116 sysctl(mib, 2, tmp, &size_sys, NULL, 0);
1119 lpmemex->ullTotalPhys = *tmp;
1121 mib[1] = HW_USERMEM;
1122 sysctl(mib, 2, NULL, &size_sys, NULL, 0);
1123 tmp = malloc(size_sys * sizeof(int));
1124 sysctl(mib, 2, tmp, &size_sys, NULL, 0);
1127 lpmemex->ullAvailPhys = *tmp;
1128 lpmemex->ullTotalPageFile = *tmp;
1129 lpmemex->ullAvailPageFile = *tmp;
1130 lpmemex->dwMemoryLoad = lpmemex->ullTotalPhys - lpmemex->ullAvailPhys;
1133 lpmemex->ullAvailPhys = lpmemex->ullTotalPhys;
1134 lpmemex->ullTotalPageFile = lpmemex->ullTotalPhys;
1135 lpmemex->ullAvailPageFile = lpmemex->ullTotalPhys;
1136 lpmemex->dwMemoryLoad = 0;
1143 /* Project2k refuses to start if it sees less than 1Mb of free swap */
1144 if (lpmemex->ullTotalPageFile < lpmemex->ullTotalPhys)
1145 lpmemex->ullTotalPageFile = lpmemex->ullTotalPhys;
1146 if (lpmemex->ullAvailPageFile < lpmemex->ullAvailPhys)
1147 lpmemex->ullAvailPageFile = lpmemex->ullAvailPhys;
1149 /* FIXME: should do something for other systems */
1151 lpmemex->ullTotalVirtual = (char*)si.lpMaximumApplicationAddress-(char*)si.lpMinimumApplicationAddress;
1152 /* FIXME: we should track down all the already allocated VM pages and substract them, for now arbitrarily remove 64KB so that it matches NT */
1153 lpmemex->ullAvailVirtual = lpmemex->ullTotalVirtual-64*1024;
1155 /* MSDN says about AvailExtendedVirtual: Size of unreserved and uncommitted
1156 memory in the extended portion of the virtual address space of the calling
1158 However, I don't know what this means, so set it to zero :(
1160 lpmemex->ullAvailExtendedVirtual = 0;
1162 memcpy(&cached_memstatus,lpmemex,sizeof(*lpmemex));
1164 TRACE("<-- LPMEMORYSTATUSEX: dwLength %ld, dwMemoryLoad %ld, ullTotalPhys %s, ullAvailPhys %s,"
1165 " ullTotalPageFile %s, ullAvailPageFile %s, ullTotalVirtual %s, ullAvailVirtual %s\n",
1166 lpmemex->dwLength, lpmemex->dwMemoryLoad, wine_dbgstr_longlong(lpmemex->ullTotalPhys),
1167 wine_dbgstr_longlong(lpmemex->ullAvailPhys), wine_dbgstr_longlong(lpmemex->ullTotalPageFile),
1168 wine_dbgstr_longlong(lpmemex->ullAvailPageFile), wine_dbgstr_longlong(lpmemex->ullTotalVirtual),
1169 wine_dbgstr_longlong(lpmemex->ullAvailVirtual) );
1174 /***********************************************************************
1175 * GlobalMemoryStatus (KERNEL32.@)
1176 * Provides information about the status of the memory, so apps can tell
1177 * roughly how much they are able to allocate
1182 VOID WINAPI GlobalMemoryStatus( LPMEMORYSTATUS lpBuffer )
1184 MEMORYSTATUSEX memstatus;
1185 OSVERSIONINFOW osver;
1187 /* Because GlobalMemoryStatus is identical to GlobalMemoryStatusEX save
1188 for one extra field in the struct, and the lack of a bug, we simply
1189 call GlobalMemoryStatusEx and copy the values across. */
1190 GlobalMemoryStatusEx(&memstatus);
1192 lpBuffer->dwLength = sizeof(*lpBuffer);
1193 lpBuffer->dwMemoryLoad = memstatus.dwMemoryLoad;
1195 /* Windows 2000 and later report -1 when values are greater than 4 Gb.
1196 * NT reports values modulo 4 Gb.
1197 * Values between 2 Gb and 4 Gb are rounded down to 2 Gb.
1200 osver.dwOSVersionInfoSize = sizeof(osver);
1201 GetVersionExW(&osver);
1203 if ( osver.dwMajorVersion >= 5 )
1205 lpBuffer->dwTotalPhys = (memstatus.ullTotalPhys > MAXDWORD) ? MAXDWORD :
1206 (memstatus.ullTotalPhys > MAXLONG) ? MAXLONG : memstatus.ullTotalPhys;
1207 lpBuffer->dwAvailPhys = (memstatus.ullAvailPhys > MAXDWORD) ? MAXDWORD :
1208 (memstatus.ullAvailPhys > MAXLONG) ? MAXLONG : memstatus.ullAvailPhys;
1209 lpBuffer->dwTotalPageFile = (memstatus.ullTotalPageFile > MAXDWORD) ? MAXDWORD :
1210 (memstatus.ullTotalPageFile > MAXLONG) ? MAXLONG : memstatus.ullTotalPageFile;
1211 lpBuffer->dwAvailPageFile = (memstatus.ullAvailPageFile > MAXDWORD) ? MAXDWORD :
1212 (memstatus.ullAvailPageFile > MAXLONG) ? MAXLONG : memstatus.ullAvailPageFile;
1213 lpBuffer->dwTotalVirtual = (memstatus.ullTotalVirtual > MAXDWORD) ? MAXDWORD :
1214 (memstatus.ullTotalVirtual > MAXLONG) ? MAXLONG : memstatus.ullTotalVirtual;
1215 lpBuffer->dwAvailVirtual = (memstatus.ullAvailVirtual > MAXDWORD) ? MAXDWORD :
1216 (memstatus.ullAvailVirtual > MAXLONG) ? MAXLONG : memstatus.ullAvailVirtual;
1218 else /* duplicate NT bug */
1220 lpBuffer->dwTotalPhys = (memstatus.ullTotalPhys > MAXDWORD) ? memstatus.ullTotalPhys :
1221 (memstatus.ullTotalPhys > MAXLONG) ? MAXLONG : memstatus.ullTotalPhys;
1222 lpBuffer->dwAvailPhys = (memstatus.ullAvailPhys > MAXDWORD) ? memstatus.ullAvailPhys :
1223 (memstatus.ullAvailPhys > MAXLONG) ? MAXLONG : memstatus.ullAvailPhys;
1224 lpBuffer->dwTotalPageFile = (memstatus.ullTotalPageFile > MAXDWORD) ? memstatus.ullTotalPageFile :
1225 (memstatus.ullTotalPageFile > MAXLONG) ? MAXLONG : memstatus.ullTotalPageFile;
1226 lpBuffer->dwAvailPageFile = (memstatus.ullAvailPageFile > MAXDWORD) ? memstatus.ullAvailPageFile :
1227 (memstatus.ullAvailPageFile > MAXLONG) ? MAXLONG : memstatus.ullAvailPageFile;
1228 lpBuffer->dwTotalVirtual = (memstatus.ullTotalVirtual > MAXDWORD) ? memstatus.ullTotalVirtual :
1229 (memstatus.ullTotalVirtual > MAXLONG) ? MAXLONG : memstatus.ullTotalVirtual;
1230 lpBuffer->dwAvailVirtual = (memstatus.ullAvailVirtual > MAXDWORD) ? memstatus.ullAvailVirtual :
1231 (memstatus.ullAvailVirtual > MAXLONG) ? MAXLONG : memstatus.ullAvailVirtual;
1234 /* work around for broken photoshop 4 installer */
1235 if ( lpBuffer->dwAvailPhys + lpBuffer->dwAvailPageFile >= 2U*1024*1024*1024)
1236 lpBuffer->dwAvailPageFile = 2U*1024*1024*1024 - lpBuffer->dwAvailPhys - 1;