dlls/kernel32/heap.c

   1 /*
   2  * Win32 heap functions
   3  *
   4  * Copyright 1995, 1996 Alexandre Julliard
   5  * Copyright 1996 Huw Davies
   6  * Copyright 1998 Ulrich Weigand
   7  *
   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.
  12  *
  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.
  17  *
  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
  21  */
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25
  26 #include <assert.h>
  27 #include <limits.h>
  28 #include <stdlib.h>
  29 #include <stdarg.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <sys/types.h>
  33 #include <time.h>
  34 #ifdef HAVE_SYS_PARAM_H
  35 #include <sys/param.h>
  36 #endif
  37 #ifdef HAVE_SYS_SYSCTL_H
  38 #include <sys/sysctl.h>
  39 #endif
  40 #ifdef HAVE_UNISTD_H
  41 # include <unistd.h>
  42 #endif
  43
  44 #ifdef sun
  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>
  50 # endif
  51 # ifdef HAVE_SYS_STAT_H
  52 #  include <sys/stat.h>
  53 # endif
  54 # include <sys/swap.h>
  55 #endif
  56
  57
  58 #include "windef.h"
  59 #include "winbase.h"
  60 #include "winerror.h"
  61 #include "winnt.h"
  62 #include "winternl.h"
  63 #include "wine/exception.h"
  64 #include "wine/debug.h"
  65
  66 WINE_DEFAULT_DEBUG_CHANNEL(heap);
  67
  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 */
  71
  72 static HANDLE systemHeap;   /* globally shared heap */
  73
  74
  75 /***********************************************************************
  76  *           HEAP_CreateSystemHeap
  77  *
  78  * Create the system heap.
  79  */
  80 static inline HANDLE HEAP_CreateSystemHeap(void)
  81 {
  82     int created;
  83     void *base;
  84     HANDLE map, event;
  85
  86     /* create the system heap event first */
  87     event = CreateEventA( NULL, TRUE, FALSE, "__wine_system_heap_event" );
  88
  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);
  92
  93     if (!(base = MapViewOfFileEx( map, FILE_MAP_ALL_ACCESS, 0, 0, 0, SYSTEM_HEAP_BASE )))
  94     {
  95         /* pre-defined address not available */
  96         ERR( "system heap base address %p not available\n", SYSTEM_HEAP_BASE );
  97         return 0;
  98     }
  99
 100     if (created)  /* newly created heap */
 101     {
 102         systemHeap = RtlCreateHeap( HEAP_SHARED, base, SYSTEM_HEAP_SIZE,
 103                                     SYSTEM_HEAP_SIZE, NULL, NULL );
 104         SetEvent( event );
 105     }
 106     else
 107     {
 108         /* wait for the heap to be initialized */
 109         WaitForSingleObject( event, INFINITE );
 110         systemHeap = base;
 111     }
 112     CloseHandle( map );
 113     return systemHeap;
 114 }
 115
 116
 117 /***********************************************************************
 118  *           HeapCreate   (KERNEL32.@)
 119  *
 120  * Create a heap object.
 121  *
 122  * RETURNS
 123  *      Handle of heap: Success
 124  *      NULL: Failure
 125  */
 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 */
 130 ) {
 131     HANDLE ret;
 132
 133     if ( flags & HEAP_SHARED )
 134     {
 135         if (!systemHeap) HEAP_CreateSystemHeap();
 136         else WARN( "Shared Heap requested, returning system heap.\n" );
 137         ret = systemHeap;
 138     }
 139     else
 140     {
 141         ret = RtlCreateHeap( flags, NULL, maxSize, initialSize, NULL, NULL );
 142         if (!ret) SetLastError( ERROR_NOT_ENOUGH_MEMORY );
 143     }
 144     return ret;
 145 }
 146
 147
 148 /***********************************************************************
 149  *           HeapDestroy   (KERNEL32.@)
 150  *
 151  * Destroy a heap object.
 152  *
 153  * RETURNS
 154  *      TRUE: Success
 155  *      FALSE: Failure
 156  */
 157 BOOL WINAPI HeapDestroy( HANDLE heap /* [in] Handle of heap */ )
 158 {
 159     if (heap == systemHeap)
 160     {
 161         WARN( "attempt to destroy system heap, returning TRUE!\n" );
 162         return TRUE;
 163     }
 164     if (!RtlDestroyHeap( heap )) return TRUE;
 165     SetLastError( ERROR_INVALID_HANDLE );
 166     return FALSE;
 167 }
 168
 169
 170 /***********************************************************************
 171  *           HeapCompact   (KERNEL32.@)
 172  */
 173 SIZE_T WINAPI HeapCompact( HANDLE heap, DWORD flags )
 174 {
 175     return RtlCompactHeap( heap, flags );
 176 }
 177
 178
 179 /***********************************************************************
 180  *           HeapValidate   (KERNEL32.@)
 181  * Validates a specified heap.
 182  *
 183  * NOTES
 184  *      Flags is ignored.
 185  *
 186  * RETURNS
 187  *      TRUE: Success
 188  *      FALSE: Failure
 189  */
 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 */
 194 ) {
 195     return RtlValidateHeap( heap, flags, block );
 196 }
 197
 198
 199 /***********************************************************************
 200  *           HeapWalk   (KERNEL32.@)
 201  * Enumerates the memory blocks in a specified heap.
 202  *
 203  * TODO
 204  *   - handling of PROCESS_HEAP_ENTRY_MOVEABLE and
 205  *     PROCESS_HEAP_ENTRY_DDESHARE (needs heap.c support)
 206  *
 207  * RETURNS
 208  *      TRUE: Success
 209  *      FALSE: Failure
 210  */
 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 */
 214 ) {
 215     NTSTATUS ret = RtlWalkHeap( heap, entry );
 216     if (ret) SetLastError( RtlNtStatusToDosError(ret) );
 217     return !ret;
 218 }
 219
 220
 221 /***********************************************************************
 222  *           HeapLock   (KERNEL32.@)
 223  * Attempts to acquire the critical section object for a specified heap.
 224  *
 225  * RETURNS
 226  *      TRUE: Success
 227  *      FALSE: Failure
 228  */
 229 BOOL WINAPI HeapLock(
 230               HANDLE heap /* [in] Handle of heap to lock for exclusive access */
 231 ) {
 232     return RtlLockHeap( heap );
 233 }
 234
 235
 236 /***********************************************************************
 237  *           HeapUnlock   (KERNEL32.@)
 238  * Releases ownership of the critical section object.
 239  *
 240  * RETURNS
 241  *      TRUE: Success
 242  *      FALSE: Failure
 243  */
 244 BOOL WINAPI HeapUnlock(
 245               HANDLE heap /* [in] Handle to the heap to unlock */
 246 ) {
 247     return RtlUnlockHeap( heap );
 248 }
 249
 250
 251 /***********************************************************************
 252  *           GetProcessHeap    (KERNEL32.@)
 253  */
 254 HANDLE WINAPI GetProcessHeap(void)
 255 {
 256     return NtCurrentTeb()->Peb->ProcessHeap;
 257 }
 258
 259
 260 /***********************************************************************
 261  *           GetProcessHeaps    (KERNEL32.@)
 262  */
 263 DWORD WINAPI GetProcessHeaps( DWORD count, HANDLE *heaps )
 264 {
 265     return RtlGetProcessHeaps( count, heaps );
 266 }
 267
 268
 269 /* These are needed so that we can call the functions from inside kernel itself */
 270
 271 /***********************************************************************
 272  *           HeapAlloc    (KERNEL32.@)
 273  */
 274 LPVOID WINAPI HeapAlloc( HANDLE heap, DWORD flags, SIZE_T size )
 275 {
 276     return RtlAllocateHeap( heap, flags, size );
 277 }
 278
 279 BOOL WINAPI HeapFree( HANDLE heap, DWORD flags, LPVOID ptr )
 280 {
 281     return RtlFreeHeap( heap, flags, ptr );
 282 }
 283
 284 LPVOID WINAPI HeapReAlloc( HANDLE heap, DWORD flags, LPVOID ptr, SIZE_T size )
 285 {
 286     return RtlReAllocateHeap( heap, flags, ptr, size );
 287 }
 288
 289 SIZE_T WINAPI HeapSize( HANDLE heap, DWORD flags, LPCVOID ptr )
 290 {
 291     return RtlSizeHeap( heap, flags, ptr );
 292 }
 293
 294 BOOL WINAPI HeapQueryInformation( HANDLE heap, HEAP_INFORMATION_CLASS info_class,
 295                                   PVOID info, SIZE_T size_in, PSIZE_T size_out)
 296 {
 297     NTSTATUS ret = RtlQueryHeapInformation( heap, info_class, info, size_in, size_out );
 298     if (ret) SetLastError( RtlNtStatusToDosError(ret) );
 299     return !ret;
 300 }
 301
 302 BOOL WINAPI HeapSetInformation( HANDLE heap, HEAP_INFORMATION_CLASS infoclass, PVOID info, SIZE_T size)
 303 {
 304     FIXME("%p %d %p %ld\n", heap, infoclass, info, size );
 305     return TRUE;
 306 }
 307
 308 /*
 309  * Win32 Global heap functions (GlobalXXX).
 310  * These functions included in Win32 for compatibility with 16 bit Windows
 311  * Especially the moveable blocks and handles are oldish.
 312  * But the ability to directly allocate memory with GPTR and LPTR is widely
 313  * used.
 314  *
 315  * The handle stuff looks horrible, but it's implemented almost like Win95
 316  * does it.
 317  *
 318  */
 319
 320 #define MAGIC_GLOBAL_USED 0x5342
 321 #define HANDLE_TO_INTERN(h)  ((PGLOBAL32_INTERN)(((char *)(h))-2))
 322 #define INTERN_TO_HANDLE(i)  (&((i)->Pointer))
 323 #define POINTER_TO_HANDLE(p) (*(((const HGLOBAL *)(p))-2))
 324 #define ISHANDLE(h)          (((ULONG_PTR)(h)&2)!=0)
 325 #define ISPOINTER(h)         (((ULONG_PTR)(h)&2)==0)
 326 /* align the storage needed for the HGLOBAL on an 8byte boundary thus
 327  * GlobalAlloc/GlobalReAlloc'ing with GMEM_MOVEABLE of memory with
 328  * size = 8*k, where k=1,2,3,... alloc's exactly the given size.
 329  * The Minolta DiMAGE Image Viewer heavily relies on this, corrupting
 330  * the output jpeg's > 1 MB if not */
 331 #define HGLOBAL_STORAGE      (sizeof(HGLOBAL)*2)
 332
 333 #include "pshpack1.h"
 334
 335 typedef struct __GLOBAL32_INTERN
 336 {
 337    WORD         Magic;
 338    LPVOID       Pointer;
 339    BYTE         Flags;
 340    BYTE         LockCount;
 341 } GLOBAL32_INTERN, *PGLOBAL32_INTERN;
 342
 343 #include "poppack.h"
 344
 345 /***********************************************************************
 346  *           GlobalAlloc   (KERNEL32.@)
 347  *
 348  * Allocate a global memory object.
 349  *
 350  * RETURNS
 351  *      Handle: Success
 352  *      NULL: Failure
 353  */
 354 HGLOBAL WINAPI GlobalAlloc(
 355                  UINT flags, /* [in] Object allocation attributes */
 356                  SIZE_T size /* [in] Number of bytes to allocate */
 357 ) {
 358    PGLOBAL32_INTERN     pintern;
 359    DWORD                hpflags;
 360    LPVOID               palloc;
 361
 362    if(flags&GMEM_ZEROINIT)
 363       hpflags=HEAP_ZERO_MEMORY;
 364    else
 365       hpflags=0;
 366
 367    if((flags & GMEM_MOVEABLE)==0) /* POINTER */
 368    {
 369       palloc=HeapAlloc(GetProcessHeap(), hpflags, size);
 370       TRACE( "(flags=%04x) returning %p\n",  flags, palloc );
 371       return palloc;
 372    }
 373    else  /* HANDLE */
 374    {
 375       if (size > INT_MAX-HGLOBAL_STORAGE)
 376       {
 377           SetLastError(ERROR_OUTOFMEMORY);
 378           return 0;
 379       }
 380
 381       RtlLockHeap(GetProcessHeap());
 382
 383       pintern = HeapAlloc(GetProcessHeap(), 0, sizeof(GLOBAL32_INTERN));
 384       if (pintern)
 385       {
 386           /* Mask out obsolete flags */
 387           flags &= ~(GMEM_LOWER | GMEM_NOCOMPACT | GMEM_NOT_BANKED | GMEM_NOTIFY);
 388
 389           pintern->Magic = MAGIC_GLOBAL_USED;
 390           pintern->Flags = flags >> 8;
 391           pintern->LockCount = 0;
 392
 393           if (size)
 394           {
 395               palloc = HeapAlloc(GetProcessHeap(), hpflags, size+HGLOBAL_STORAGE);
 396               if (!palloc)
 397               {
 398                   HeapFree(GetProcessHeap(), 0, pintern);
 399                   pintern = NULL;
 400               }
 401               else
 402               {
 403                   *(HGLOBAL *)palloc = INTERN_TO_HANDLE(pintern);
 404                   pintern->Pointer = (char *)palloc + HGLOBAL_STORAGE;
 405               }
 406           }
 407           else
 408               pintern->Pointer = NULL;
 409       }
 410
 411       RtlUnlockHeap(GetProcessHeap());
 412       if (!pintern) return 0;
 413       TRACE( "(flags=%04x) returning handle %p pointer %p\n",
 414              flags, INTERN_TO_HANDLE(pintern), pintern->Pointer );
 415       return INTERN_TO_HANDLE(pintern);
 416    }
 417 }
 418
 419
 420 /***********************************************************************
 421  *           GlobalLock   (KERNEL32.@)
 422  *
 423  * Lock a global memory object and return a pointer to first byte of the memory
 424  *
 425  * PARAMS
 426  *  hmem [I] Handle of the global memory object
 427  *
 428  * RETURNS
 429  *  Success: Pointer to first byte of the memory block
 430  *  Failure: NULL
 431  *
 432  * NOTES
 433  *   When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
 434  *
 435  */
 436 LPVOID WINAPI GlobalLock(HGLOBAL hmem)
 437 {
 438     PGLOBAL32_INTERN pintern;
 439     LPVOID           palloc;
 440
 441     if (ISPOINTER(hmem))
 442         return IsBadReadPtr(hmem, 1) ? NULL : hmem;
 443
 444     RtlLockHeap(GetProcessHeap());
 445     __TRY
 446     {
 447         pintern = HANDLE_TO_INTERN(hmem);
 448         if (pintern->Magic == MAGIC_GLOBAL_USED)
 449         {
 450             palloc = pintern->Pointer;
 451             if (!pintern->Pointer)
 452                 SetLastError(ERROR_DISCARDED);
 453             else if (pintern->LockCount < GMEM_LOCKCOUNT)
 454                 pintern->LockCount++;
 455         }
 456         else
 457         {
 458             WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
 459             palloc = NULL;
 460             SetLastError(ERROR_INVALID_HANDLE);
 461         }
 462     }
 463     __EXCEPT_PAGE_FAULT
 464     {
 465         WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
 466         palloc = NULL;
 467         SetLastError(ERROR_INVALID_HANDLE);
 468     }
 469     __ENDTRY
 470     RtlUnlockHeap(GetProcessHeap());
 471     return palloc;
 472 }
 473
 474
 475 /***********************************************************************
 476  *           GlobalUnlock   (KERNEL32.@)
 477  *
 478  * Unlock a global memory object.
 479  *
 480  * PARAMS
 481  *  hmem [I] Handle of the global memory object
 482  *
 483  * RETURNS
 484  *  Success: Object is still locked
 485  *  Failure: FALSE (The Object is unlocked)
 486  *
 487  * NOTES
 488  *   When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
 489  *
 490  */
 491 BOOL WINAPI GlobalUnlock(HGLOBAL hmem)
 492 {
 493     PGLOBAL32_INTERN pintern;
 494     BOOL locked;
 495
 496     if (ISPOINTER(hmem)) return TRUE;
 497
 498     RtlLockHeap(GetProcessHeap());
 499     __TRY
 500     {
 501         pintern=HANDLE_TO_INTERN(hmem);
 502         if(pintern->Magic==MAGIC_GLOBAL_USED)
 503         {
 504             if(pintern->LockCount)
 505             {
 506                 pintern->LockCount--;
 507                 locked = (pintern->LockCount != 0);
 508                 if (!locked) SetLastError(NO_ERROR);
 509             }
 510             else
 511             {
 512                 WARN("%p not locked\n", hmem);
 513                 SetLastError(ERROR_NOT_LOCKED);
 514                 locked = FALSE;
 515             }
 516         }
 517         else
 518         {
 519             WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
 520             SetLastError(ERROR_INVALID_HANDLE);
 521             locked=FALSE;
 522         }
 523     }
 524     __EXCEPT_PAGE_FAULT
 525     {
 526         WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
 527         SetLastError( ERROR_INVALID_PARAMETER );
 528         locked=FALSE;
 529     }
 530     __ENDTRY
 531     RtlUnlockHeap(GetProcessHeap());
 532     return locked;
 533 }
 534
 535
 536 /***********************************************************************
 537  *           GlobalHandle   (KERNEL32.@)
 538  *
 539  * Get the handle associated with the pointer to a global memory block.
 540  *
 541  * RETURNS
 542  *      Handle: Success
 543  *      NULL: Failure
 544  */
 545 HGLOBAL WINAPI GlobalHandle(
 546                  LPCVOID pmem /* [in] Pointer to global memory block */
 547 ) {
 548     HGLOBAL handle;
 549     PGLOBAL32_INTERN  maybe_intern;
 550     LPCVOID test;
 551
 552     if (!pmem)
 553     {
 554         SetLastError( ERROR_INVALID_PARAMETER );
 555         return 0;
 556     }
 557
 558     RtlLockHeap(GetProcessHeap());
 559     __TRY
 560     {
 561         handle = 0;
 562
 563         /* note that if pmem is a pointer to a block allocated by        */
 564         /* GlobalAlloc with GMEM_MOVEABLE then magic test in HeapValidate  */
 565         /* will fail.                                                      */
 566         if (ISPOINTER(pmem)) {
 567             if (HeapValidate( GetProcessHeap(), 0, pmem )) {
 568                 handle = (HGLOBAL)pmem;  /* valid fixed block */
 569                 break;
 570             }
 571             handle = POINTER_TO_HANDLE(pmem);
 572         } else
 573             handle = (HGLOBAL)pmem;
 574
 575         /* Now test handle either passed in or retrieved from pointer */
 576         maybe_intern = HANDLE_TO_INTERN( handle );
 577         if (maybe_intern->Magic == MAGIC_GLOBAL_USED) {
 578             test = maybe_intern->Pointer;
 579             if (HeapValidate( GetProcessHeap(), 0, (const char *)test - HGLOBAL_STORAGE ) && /* obj(-handle) valid arena? */
 580                 HeapValidate( GetProcessHeap(), 0, maybe_intern ))  /* intern valid arena? */
 581                 break;  /* valid moveable block */
 582         }
 583         handle = 0;
 584         SetLastError( ERROR_INVALID_HANDLE );
 585     }
 586     __EXCEPT_PAGE_FAULT
 587     {
 588         SetLastError( ERROR_INVALID_HANDLE );
 589         handle = 0;
 590     }
 591     __ENDTRY
 592     RtlUnlockHeap(GetProcessHeap());
 593
 594     return handle;
 595 }
 596
 597
 598 /***********************************************************************
 599  *           GlobalReAlloc   (KERNEL32.@)
 600  *
 601  * Change the size or attributes of a global memory object.
 602  *
 603  * RETURNS
 604  *      Handle: Success
 605  *      NULL: Failure
 606  */
 607 HGLOBAL WINAPI GlobalReAlloc(
 608                  HGLOBAL hmem, /* [in] Handle of global memory object */
 609                  SIZE_T size,  /* [in] New size of block */
 610                  UINT flags    /* [in] How to reallocate object */
 611 ) {
 612    LPVOID               palloc;
 613    HGLOBAL            hnew;
 614    PGLOBAL32_INTERN     pintern;
 615    DWORD heap_flags = (flags & GMEM_ZEROINIT) ? HEAP_ZERO_MEMORY : 0;
 616
 617    hnew = 0;
 618    RtlLockHeap(GetProcessHeap());
 619    if(flags & GMEM_MODIFY) /* modify flags */
 620    {
 621       if( ISPOINTER(hmem) && (flags & GMEM_MOVEABLE))
 622       {
 623          /* make a fixed block moveable
 624           * actually only NT is able to do this. But it's soo simple
 625           */
 626          if (hmem == 0)
 627          {
 628              WARN("GlobalReAlloc with null handle!\n");
 629              SetLastError( ERROR_NOACCESS );
 630              hnew = 0;
 631          }
 632          else
 633          {
 634              size = HeapSize(GetProcessHeap(), 0, hmem);
 635              hnew = GlobalAlloc(flags, size);
 636              palloc = GlobalLock(hnew);
 637              memcpy(palloc, hmem, size);
 638              GlobalUnlock(hnew);
 639              GlobalFree(hmem);
 640          }
 641       }
 642       else if( ISPOINTER(hmem) &&(flags & GMEM_DISCARDABLE))
 643       {
 644          /* change the flags to make our block "discardable" */
 645          pintern=HANDLE_TO_INTERN(hmem);
 646          pintern->Flags = pintern->Flags | (GMEM_DISCARDABLE >> 8);
 647          hnew=hmem;
 648       }
 649       else
 650       {
 651          SetLastError(ERROR_INVALID_PARAMETER);
 652          hnew = 0;
 653       }
 654    }
 655    else
 656    {
 657       if(ISPOINTER(hmem))
 658       {
 659          /* reallocate fixed memory */
 660          hnew=HeapReAlloc(GetProcessHeap(), heap_flags, hmem, size);
 661       }
 662       else
 663       {
 664          /* reallocate a moveable block */
 665          pintern=HANDLE_TO_INTERN(hmem);
 666
 667 #if 0
 668 /* Apparently Windows doesn't care whether the handle is locked at this point */
 669 /* See also the same comment in GlobalFree() */
 670          if(pintern->LockCount>1) {
 671             ERR("handle 0x%08lx is still locked, cannot realloc!\n",(DWORD)hmem);
 672             SetLastError(ERROR_INVALID_HANDLE);
 673          } else
 674 #endif
 675          if(size!=0)
 676          {
 677             hnew=hmem;
 678             if(pintern->Pointer)
 679             {
 680                if(size > INT_MAX-HGLOBAL_STORAGE)
 681                {
 682                    SetLastError(ERROR_OUTOFMEMORY);
 683                    hnew = 0;
 684                }
 685                else if((palloc = HeapReAlloc(GetProcessHeap(), heap_flags,
 686                                    (char *) pintern->Pointer-HGLOBAL_STORAGE,
 687                                    size+HGLOBAL_STORAGE)) == NULL)
 688                    hnew = 0; /* Block still valid */
 689                else
 690                    pintern->Pointer = (char *)palloc+HGLOBAL_STORAGE;
 691             }
 692             else
 693             {
 694                 if(size > INT_MAX-HGLOBAL_STORAGE)
 695                 {
 696                     SetLastError(ERROR_OUTOFMEMORY);
 697                     hnew = 0;
 698                 }
 699                 else if((palloc=HeapAlloc(GetProcessHeap(), heap_flags, size+HGLOBAL_STORAGE))
 700                    == NULL)
 701                     hnew = 0;
 702                 else
 703                 {
 704                     *(HGLOBAL *)palloc = hmem;
 705                     pintern->Pointer = (char *)palloc + HGLOBAL_STORAGE;
 706                 }
 707             }
 708          }
 709          else
 710          {
 711             if (pintern->LockCount == 0)
 712             {
 713                 if(pintern->Pointer)
 714                 {
 715                     HeapFree(GetProcessHeap(), 0, (char *) pintern->Pointer-HGLOBAL_STORAGE);
 716                     pintern->Pointer = NULL;
 717                 }
 718                 hnew = hmem;
 719             }
 720             else
 721                 WARN("not freeing memory associated with locked handle\n");
 722          }
 723       }
 724    }
 725    RtlUnlockHeap(GetProcessHeap());
 726    return hnew;
 727 }
 728
 729
 730 /***********************************************************************
 731  *           GlobalFree   (KERNEL32.@)
 732  *
 733  * Free a global memory object.
 734  *
 735  * PARAMS
 736  *  hmem [I] Handle of the global memory object
 737  *
 738  * RETURNS
 739  *  Success: NULL
 740  *  Failure: The provided handle
 741  *
 742  * NOTES
 743  *   When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
 744  *
 745  */
 746 HGLOBAL WINAPI GlobalFree(HGLOBAL hmem)
 747 {
 748     PGLOBAL32_INTERN pintern;
 749     HGLOBAL hreturned;
 750
 751     RtlLockHeap(GetProcessHeap());
 752     __TRY
 753     {
 754         hreturned = 0;
 755         if(ISPOINTER(hmem)) /* POINTER */
 756         {
 757             if(!HeapFree(GetProcessHeap(), 0, hmem))
 758             {
 759                 SetLastError(ERROR_INVALID_HANDLE);
 760                 hreturned = hmem;
 761             }
 762         }
 763         else  /* HANDLE */
 764         {
 765             pintern=HANDLE_TO_INTERN(hmem);
 766
 767             if(pintern->Magic==MAGIC_GLOBAL_USED)
 768             {
 769                 pintern->Magic = 0xdead;
 770
 771                 /* WIN98 does not make this test. That is you can free a */
 772                 /* block you have not unlocked. Go figure!!              */
 773                 /* if(pintern->LockCount!=0)  */
 774                 /*    SetLastError(ERROR_INVALID_HANDLE);  */
 775
 776                 if(pintern->Pointer)
 777                     if(!HeapFree(GetProcessHeap(), 0, (char *)(pintern->Pointer)-HGLOBAL_STORAGE))
 778                         hreturned=hmem;
 779                 if(!HeapFree(GetProcessHeap(), 0, pintern))
 780                     hreturned=hmem;
 781             }
 782             else
 783             {
 784                 WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
 785                 SetLastError(ERROR_INVALID_HANDLE);
 786                 hreturned = hmem;
 787             }
 788         }
 789     }
 790     __EXCEPT_PAGE_FAULT
 791     {
 792         ERR("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
 793         SetLastError( ERROR_INVALID_PARAMETER );
 794         hreturned = hmem;
 795     }
 796     __ENDTRY
 797     RtlUnlockHeap(GetProcessHeap());
 798     return hreturned;
 799 }
 800
 801
 802 /***********************************************************************
 803  *           GlobalSize   (KERNEL32.@)
 804  *
 805  * Get the size of a global memory object.
 806  *
 807  * PARAMS
 808  *  hmem [I] Handle of the global memory object
 809  *
 810  * RETURNS
 811  *  Failure: 0
 812  *  Success: Size in Bytes of the global memory object
 813  *
 814  * NOTES
 815  *   When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
 816  *
 817  */
 818 SIZE_T WINAPI GlobalSize(HGLOBAL hmem)
 819 {
 820    DWORD                retval;
 821    PGLOBAL32_INTERN     pintern;
 822
 823    if (!((ULONG_PTR)hmem >> 16))
 824    {
 825        SetLastError(ERROR_INVALID_HANDLE);
 826        return 0;
 827    }
 828
 829    if(ISPOINTER(hmem))
 830    {
 831       retval=HeapSize(GetProcessHeap(), 0, hmem);
 832    }
 833    else
 834    {
 835       RtlLockHeap(GetProcessHeap());
 836       pintern=HANDLE_TO_INTERN(hmem);
 837
 838       if(pintern->Magic==MAGIC_GLOBAL_USED)
 839       {
 840          if (!pintern->Pointer) /* handle case of GlobalAlloc( ??,0) */
 841              retval = 0;
 842          else
 843          {
 844              retval = HeapSize(GetProcessHeap(), 0,
 845                          (char *)(pintern->Pointer) - HGLOBAL_STORAGE );
 846              if (retval != (DWORD)-1) retval -= HGLOBAL_STORAGE;
 847          }
 848       }
 849       else
 850       {
 851          WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
 852          SetLastError(ERROR_INVALID_HANDLE);
 853          retval=0;
 854       }
 855       RtlUnlockHeap(GetProcessHeap());
 856    }
 857    /* HeapSize returns 0xffffffff on failure */
 858    if (retval == 0xffffffff) retval = 0;
 859    return retval;
 860 }
 861
 862
 863 /***********************************************************************
 864  *           GlobalWire   (KERNEL32.@)
 865  */
 866 LPVOID WINAPI GlobalWire(HGLOBAL hmem)
 867 {
 868    return GlobalLock( hmem );
 869 }
 870
 871
 872 /***********************************************************************
 873  *           GlobalUnWire   (KERNEL32.@)
 874  */
 875 BOOL WINAPI GlobalUnWire(HGLOBAL hmem)
 876 {
 877    return GlobalUnlock( hmem);
 878 }
 879
 880
 881 /***********************************************************************
 882  *           GlobalFix   (KERNEL32.@)
 883  */
 884 VOID WINAPI GlobalFix(HGLOBAL hmem)
 885 {
 886     GlobalLock( hmem );
 887 }
 888
 889
 890 /***********************************************************************
 891  *           GlobalUnfix   (KERNEL32.@)
 892  */
 893 VOID WINAPI GlobalUnfix(HGLOBAL hmem)
 894 {
 895    GlobalUnlock( hmem);
 896 }
 897
 898
 899 /***********************************************************************
 900  *           GlobalFlags   (KERNEL32.@)
 901  *
 902  * Get information about a global memory object.
 903  *
 904  * PARAMS
 905  *  hmem [I] Handle of the global memory object
 906  *
 907  * RETURNS
 908  *  Failure: GMEM_INVALID_HANDLE, when the provided handle is invalid
 909  *  Success: Value specifying allocation flags and lock count
 910  *
 911  */
 912 UINT WINAPI GlobalFlags(HGLOBAL hmem)
 913 {
 914    DWORD                retval;
 915    PGLOBAL32_INTERN     pintern;
 916
 917    if(ISPOINTER(hmem))
 918    {
 919       retval=0;
 920    }
 921    else
 922    {
 923       RtlLockHeap(GetProcessHeap());
 924       pintern=HANDLE_TO_INTERN(hmem);
 925       if(pintern->Magic==MAGIC_GLOBAL_USED)
 926       {
 927          retval=pintern->LockCount + (pintern->Flags<<8);
 928          if(pintern->Pointer==0)
 929             retval|= GMEM_DISCARDED;
 930       }
 931       else
 932       {
 933          WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
 934          SetLastError(ERROR_INVALID_HANDLE);
 935          retval = GMEM_INVALID_HANDLE;
 936       }
 937       RtlUnlockHeap(GetProcessHeap());
 938    }
 939    return retval;
 940 }
 941
 942
 943 /***********************************************************************
 944  *           GlobalCompact   (KERNEL32.@)
 945  */
 946 SIZE_T WINAPI GlobalCompact( DWORD minfree )
 947 {
 948     return 0;  /* GlobalCompact does nothing in Win32 */
 949 }
 950
 951
 952 /***********************************************************************
 953  *           LocalAlloc   (KERNEL32.@)
 954  *
 955  * Allocate a local memory object.
 956  *
 957  * RETURNS
 958  *      Handle: Success
 959  *      NULL: Failure
 960  *
 961  * NOTES
 962  *  Windows memory management does not provide a separate local heap
 963  *  and global heap.
 964  */
 965 HLOCAL WINAPI LocalAlloc(
 966                 UINT flags, /* [in] Allocation attributes */
 967                 SIZE_T size /* [in] Number of bytes to allocate */
 968 ) {
 969     return GlobalAlloc( flags, size );
 970 }
 971
 972
 973 /***********************************************************************
 974  *           LocalCompact   (KERNEL32.@)
 975  */
 976 SIZE_T WINAPI LocalCompact( UINT minfree )
 977 {
 978     return 0;  /* LocalCompact does nothing in Win32 */
 979 }
 980
 981
 982 /***********************************************************************
 983  *           LocalFlags   (KERNEL32.@)
 984  *
 985  * Get information about a local memory object.
 986  *
 987  * RETURNS
 988  *      Value specifying allocation flags and lock count.
 989  *      LMEM_INVALID_HANDLE: Failure
 990  *
 991  * NOTES
 992  *  Windows memory management does not provide a separate local heap
 993  *  and global heap.
 994  */
 995 UINT WINAPI LocalFlags(
 996               HLOCAL handle /* [in] Handle of memory object */
 997 ) {
 998     return GlobalFlags( handle );
 999 }
1000
1001
1002 /***********************************************************************
1003  *           LocalFree   (KERNEL32.@)
1004  *
1005  * Free a local memory object.
1006  *
1007  * RETURNS
1008  *      NULL: Success
1009  *      Handle: Failure
1010  *
1011  * NOTES
1012  *  Windows memory management does not provide a separate local heap
1013  *  and global heap.
1014  */
1015 HLOCAL WINAPI LocalFree(
1016                 HLOCAL handle /* [in] Handle of memory object */
1017 ) {
1018     return GlobalFree( handle );
1019 }
1020
1021
1022 /***********************************************************************
1023  *           LocalHandle   (KERNEL32.@)
1024  *
1025  * Get the handle associated with the pointer to a local memory block.
1026  *
1027  * RETURNS
1028  *      Handle: Success
1029  *      NULL: Failure
1030  *
1031  * NOTES
1032  *  Windows memory management does not provide a separate local heap
1033  *  and global heap.
1034  */
1035 HLOCAL WINAPI LocalHandle(
1036                 LPCVOID ptr /* [in] Address of local memory block */
1037 ) {
1038     return GlobalHandle( ptr );
1039 }
1040
1041
1042 /***********************************************************************
1043  *           LocalLock   (KERNEL32.@)
1044  * Locks a local memory object and returns pointer to the first byte
1045  * of the memory block.
1046  *
1047  * RETURNS
1048  *      Pointer: Success
1049  *      NULL: Failure
1050  *
1051  * NOTES
1052  *  Windows memory management does not provide a separate local heap
1053  *  and global heap.
1054  */
1055 LPVOID WINAPI LocalLock(
1056               HLOCAL handle /* [in] Address of local memory object */
1057 ) {
1058     return GlobalLock( handle );
1059 }
1060
1061
1062 /***********************************************************************
1063  *           LocalReAlloc   (KERNEL32.@)
1064  *
1065  * Change the size or attributes of a local memory object.
1066  *
1067  * RETURNS
1068  *      Handle: Success
1069  *      NULL: Failure
1070  *
1071  * NOTES
1072  *  Windows memory management does not provide a separate local heap
1073  *  and global heap.
1074  */
1075 HLOCAL WINAPI LocalReAlloc(
1076                 HLOCAL handle, /* [in] Handle of memory object */
1077                 SIZE_T size,   /* [in] New size of block */
1078                 UINT flags     /* [in] How to reallocate object */
1079 ) {
1080     return GlobalReAlloc( handle, size, flags );
1081 }
1082
1083
1084 /***********************************************************************
1085  *           LocalShrink   (KERNEL32.@)
1086  */
1087 SIZE_T WINAPI LocalShrink( HGLOBAL handle, UINT newsize )
1088 {
1089     return 0;  /* LocalShrink does nothing in Win32 */
1090 }
1091
1092
1093 /***********************************************************************
1094  *           LocalSize   (KERNEL32.@)
1095  *
1096  * Get the size of a local memory object.
1097  *
1098  * RETURNS
1099  *      Size: Success
1100  *      0: Failure
1101  *
1102  * NOTES
1103  *  Windows memory management does not provide a separate local heap
1104  *  and global heap.
1105  */
1106 SIZE_T WINAPI LocalSize(
1107               HLOCAL handle /* [in] Handle of memory object */
1108 ) {
1109     return GlobalSize( handle );
1110 }
1111
1112
1113 /***********************************************************************
1114  *           LocalUnlock   (KERNEL32.@)
1115  *
1116  * Unlock a local memory object.
1117  *
1118  * RETURNS
1119  *      TRUE: Object is still locked
1120  *      FALSE: Object is unlocked
1121  *
1122  * NOTES
1123  *  Windows memory management does not provide a separate local heap
1124  *  and global heap.
1125  */
1126 BOOL WINAPI LocalUnlock(
1127               HLOCAL handle /* [in] Handle of memory object */
1128 ) {
1129     return GlobalUnlock( handle );
1130 }
1131
1132
1133 /***********************************************************************
1134  *           GlobalMemoryStatusEx   (KERNEL32.@)
1135  * A version of GlobalMemoryStatus that can deal with memory over 4GB
1136  *
1137  * RETURNS
1138  *      TRUE
1139  */
1140 BOOL WINAPI GlobalMemoryStatusEx( LPMEMORYSTATUSEX lpmemex )
1141 {
1142     static MEMORYSTATUSEX       cached_memstatus;
1143     static int cache_lastchecked = 0;
1144     SYSTEM_INFO si;
1145 #ifdef linux
1146     FILE *f;
1147 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__)
1148     unsigned long val;
1149     int mib[2];
1150     size_t size_sys;
1151 #elif defined(__APPLE__)
1152     unsigned int val;
1153     int mib[2];
1154     size_t size_sys;
1155 #elif defined(sun)
1156     unsigned long pagesize,maxpages,freepages,swapspace,swapfree;
1157     struct anoninfo swapinf;
1158     int rval;
1159 #endif
1160
1161     if (lpmemex->dwLength != sizeof(*lpmemex))
1162     {
1163         SetLastError( ERROR_INVALID_PARAMETER );
1164         return FALSE;
1165     }
1166
1167     if (time(NULL)==cache_lastchecked) {
1168         *lpmemex = cached_memstatus;
1169         return TRUE;
1170     }
1171     cache_lastchecked = time(NULL);
1172
1173     lpmemex->dwMemoryLoad     = 0;
1174     lpmemex->ullTotalPhys     = 16*1024*1024;
1175     lpmemex->ullAvailPhys     = 16*1024*1024;
1176     lpmemex->ullTotalPageFile = 16*1024*1024;
1177     lpmemex->ullAvailPageFile = 16*1024*1024;
1178
1179 #ifdef linux
1180     f = fopen( "/proc/meminfo", "r" );
1181     if (f)
1182     {
1183         char buffer[256];
1184         unsigned long total, used, free, shared, buffers, cached;
1185
1186         lpmemex->ullTotalPhys = lpmemex->ullAvailPhys = 0;
1187         lpmemex->ullTotalPageFile = lpmemex->ullAvailPageFile = 0;
1188         while (fgets( buffer, sizeof(buffer), f ))
1189         {
1190             /* old style /proc/meminfo ... */
1191             if (sscanf( buffer, "Mem: %lu %lu %lu %lu %lu %lu",
1192                         &total, &used, &free, &shared, &buffers, &cached ))
1193             {
1194                 lpmemex->ullTotalPhys += total;
1195                 lpmemex->ullAvailPhys += free + buffers + cached;
1196             }
1197             if (sscanf( buffer, "Swap: %lu %lu %lu", &total, &used, &free ))
1198             {
1199                 lpmemex->ullTotalPageFile += total;
1200                 lpmemex->ullAvailPageFile += free;
1201             }
1202
1203             /* new style /proc/meminfo ... */
1204             if (sscanf(buffer, "MemTotal: %lu", &total))
1205                 lpmemex->ullTotalPhys = total*1024;
1206             if (sscanf(buffer, "MemFree: %lu", &free))
1207                 lpmemex->ullAvailPhys = free*1024;
1208             if (sscanf(buffer, "SwapTotal: %lu", &total))
1209                 lpmemex->ullTotalPageFile = total*1024;
1210             if (sscanf(buffer, "SwapFree: %lu", &free))
1211                 lpmemex->ullAvailPageFile = free*1024;
1212             if (sscanf(buffer, "Buffers: %lu", &buffers))
1213                 lpmemex->ullAvailPhys += buffers*1024;
1214             if (sscanf(buffer, "Cached: %lu", &cached))
1215                 lpmemex->ullAvailPhys += cached*1024;
1216         }
1217         fclose( f );
1218     }
1219 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
1220     mib[0] = CTL_HW;
1221     mib[1] = HW_PHYSMEM;
1222     size_sys = sizeof(val);
1223     sysctl(mib, 2, &val, &size_sys, NULL, 0);
1224     if (val) lpmemex->ullTotalPhys = val;
1225     mib[1] = HW_USERMEM;
1226     size_sys = sizeof(val);
1227     sysctl(mib, 2, &val, &size_sys, NULL, 0);
1228     if (!val) val = lpmemex->ullTotalPhys;
1229     lpmemex->ullAvailPhys = val;
1230     lpmemex->ullTotalPageFile = val;
1231     lpmemex->ullAvailPageFile = val;
1232 #elif defined ( sun )
1233     pagesize=sysconf(_SC_PAGESIZE);
1234     maxpages=sysconf(_SC_PHYS_PAGES);
1235     freepages=sysconf(_SC_AVPHYS_PAGES);
1236     rval=swapctl(SC_AINFO, &swapinf);
1237     if(rval >-1)
1238     {
1239         swapspace=swapinf.ani_max*pagesize;
1240         swapfree=swapinf.ani_free*pagesize;
1241     }else
1242     {
1243
1244         WARN("Swap size cannot be determined , assuming equal to physical memory\n");
1245         swapspace=maxpages*pagesize;
1246         swapfree=maxpages*pagesize;
1247     }
1248     lpmemex->ullTotalPhys=pagesize*maxpages;
1249     lpmemex->ullAvailPhys = pagesize*freepages;
1250     lpmemex->ullTotalPageFile = swapspace;
1251     lpmemex->ullAvailPageFile = swapfree;
1252 #endif
1253
1254     if (lpmemex->ullTotalPhys)
1255     {
1256         lpmemex->dwMemoryLoad = (lpmemex->ullTotalPhys-lpmemex->ullAvailPhys)
1257                                   / (lpmemex->ullTotalPhys / 100);
1258     }
1259
1260     /* Win98 returns only the swapsize in ullTotalPageFile/ullAvailPageFile,
1261        WinXP returns the size of physical memory + swapsize;
1262        mimic the behavior of XP.
1263        Note: Project2k refuses to start if it sees less than 1Mb of free swap.
1264     */
1265     lpmemex->ullTotalPageFile += lpmemex->ullTotalPhys;
1266     lpmemex->ullAvailPageFile += lpmemex->ullAvailPhys;
1267
1268     /* Titan Quest refuses to run if TotalPageFile <= ullTotalPhys */
1269     if(lpmemex->ullTotalPageFile == lpmemex->ullTotalPhys)
1270     {
1271         lpmemex->ullTotalPhys -= 1;
1272         lpmemex->ullAvailPhys -= 1;
1273     }
1274
1275     /* FIXME: should do something for other systems */
1276     GetSystemInfo(&si);
1277     lpmemex->ullTotalVirtual  = (ULONG_PTR)si.lpMaximumApplicationAddress-(ULONG_PTR)si.lpMinimumApplicationAddress;
1278     /* FIXME: we should track down all the already allocated VM pages and substract them, for now arbitrarily remove 64KB so that it matches NT */
1279     lpmemex->ullAvailVirtual  = lpmemex->ullTotalVirtual-64*1024;
1280
1281     /* MSDN says about AvailExtendedVirtual: Size of unreserved and uncommitted
1282        memory in the extended portion of the virtual address space of the calling
1283        process, in bytes.
1284        However, I don't know what this means, so set it to zero :(
1285     */
1286     lpmemex->ullAvailExtendedVirtual = 0;
1287
1288     cached_memstatus = *lpmemex;
1289
1290     TRACE("<-- LPMEMORYSTATUSEX: dwLength %d, dwMemoryLoad %d, ullTotalPhys %s, ullAvailPhys %s,"
1291           " ullTotalPageFile %s, ullAvailPageFile %s, ullTotalVirtual %s, ullAvailVirtual %s\n",
1292           lpmemex->dwLength, lpmemex->dwMemoryLoad, wine_dbgstr_longlong(lpmemex->ullTotalPhys),
1293           wine_dbgstr_longlong(lpmemex->ullAvailPhys), wine_dbgstr_longlong(lpmemex->ullTotalPageFile),
1294           wine_dbgstr_longlong(lpmemex->ullAvailPageFile), wine_dbgstr_longlong(lpmemex->ullTotalVirtual),
1295           wine_dbgstr_longlong(lpmemex->ullAvailVirtual) );
1296
1297     return TRUE;
1298 }
1299
1300 /***********************************************************************
1301  *           GlobalMemoryStatus   (KERNEL32.@)
1302  * Provides information about the status of the memory, so apps can tell
1303  * roughly how much they are able to allocate
1304  *
1305  * RETURNS
1306  *      None
1307  */
1308 VOID WINAPI GlobalMemoryStatus( LPMEMORYSTATUS lpBuffer )
1309 {
1310     MEMORYSTATUSEX memstatus;
1311     OSVERSIONINFOW osver;
1312     IMAGE_NT_HEADERS *nt = RtlImageNtHeader( GetModuleHandleW(0) );
1313
1314     /* Because GlobalMemoryStatus is identical to GlobalMemoryStatusEX save
1315        for one extra field in the struct, and the lack of a bug, we simply
1316        call GlobalMemoryStatusEx and copy the values across. */
1317     memstatus.dwLength = sizeof(memstatus);
1318     GlobalMemoryStatusEx(&memstatus);
1319
1320     lpBuffer->dwLength = sizeof(*lpBuffer);
1321     lpBuffer->dwMemoryLoad = memstatus.dwMemoryLoad;
1322
1323     /* Windows 2000 and later report -1 when values are greater than 4 Gb.
1324      * NT reports values modulo 4 Gb.
1325      */
1326
1327     osver.dwOSVersionInfoSize = sizeof(osver);
1328     GetVersionExW(&osver);
1329
1330     if ( osver.dwMajorVersion >= 5 )
1331     {
1332         lpBuffer->dwTotalPhys = min( memstatus.ullTotalPhys, MAXDWORD );
1333         lpBuffer->dwAvailPhys = min( memstatus.ullAvailPhys, MAXDWORD );
1334         lpBuffer->dwTotalPageFile = min( memstatus.ullTotalPageFile, MAXDWORD );
1335         lpBuffer->dwAvailPageFile = min( memstatus.ullAvailPageFile, MAXDWORD );
1336         lpBuffer->dwTotalVirtual = min( memstatus.ullTotalVirtual, MAXDWORD );
1337         lpBuffer->dwAvailVirtual = min( memstatus.ullAvailVirtual, MAXDWORD );
1338
1339     }
1340     else        /* duplicate NT bug */
1341     {
1342         lpBuffer->dwTotalPhys = memstatus.ullTotalPhys;
1343         lpBuffer->dwAvailPhys = memstatus.ullAvailPhys;
1344         lpBuffer->dwTotalPageFile = memstatus.ullTotalPageFile;
1345         lpBuffer->dwAvailPageFile = memstatus.ullAvailPageFile;
1346         lpBuffer->dwTotalVirtual = memstatus.ullTotalVirtual;
1347         lpBuffer->dwAvailVirtual = memstatus.ullAvailVirtual;
1348     }
1349
1350     /* values are limited to 2Gb unless the app has the IMAGE_FILE_LARGE_ADDRESS_AWARE flag */
1351     /* page file sizes are not limited (Adobe Illustrator 8 depends on this) */
1352     if (!(nt->FileHeader.Characteristics & IMAGE_FILE_LARGE_ADDRESS_AWARE))
1353     {
1354         if (lpBuffer->dwTotalPhys > MAXLONG) lpBuffer->dwTotalPhys = MAXLONG;
1355         if (lpBuffer->dwAvailPhys > MAXLONG) lpBuffer->dwAvailPhys = MAXLONG;
1356         if (lpBuffer->dwTotalVirtual > MAXLONG) lpBuffer->dwTotalVirtual = MAXLONG;
1357         if (lpBuffer->dwAvailVirtual > MAXLONG) lpBuffer->dwAvailVirtual = MAXLONG;
1358     }
1359
1360     /* work around for broken photoshop 4 installer */
1361     if ( lpBuffer->dwAvailPhys +  lpBuffer->dwAvailPageFile >= 2U*1024*1024*1024)
1362          lpBuffer->dwAvailPageFile = 2U*1024*1024*1024 -  lpBuffer->dwAvailPhys - 1;
1363
1364     /* limit page file size for really old binaries */
1365     if (nt->OptionalHeader.MajorSubsystemVersion < 4)
1366     {
1367         if (lpBuffer->dwTotalPageFile > MAXLONG) lpBuffer->dwTotalPageFile = MAXLONG;
1368         if (lpBuffer->dwAvailPageFile > MAXLONG) lpBuffer->dwAvailPageFile = MAXLONG;
1369     }
1370
1371     TRACE("Length %u, MemoryLoad %u, TotalPhys %lx, AvailPhys %lx,"
1372           " TotalPageFile %lx, AvailPageFile %lx, TotalVirtual %lx, AvailVirtual %lx\n",
1373           lpBuffer->dwLength, lpBuffer->dwMemoryLoad, lpBuffer->dwTotalPhys,
1374           lpBuffer->dwAvailPhys, lpBuffer->dwTotalPageFile, lpBuffer->dwAvailPageFile,
1375           lpBuffer->dwTotalVirtual, lpBuffer->dwAvailVirtual );
1376 }