heap.c 39.2 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
/*
 * Win32 heap functions
 *
 * Copyright 1995, 1996 Alexandre Julliard
 * Copyright 1996 Huw Davies
 * Copyright 1998 Ulrich Weigand
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * 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"
Alexandre Julliard's avatar
Alexandre Julliard committed
24
#include "wine/port.h"
25 26

#include <assert.h>
27
#include <limits.h>
28 29 30 31
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
32 33 34 35 36 37 38 39 40 41 42
#include <sys/types.h>
#include <time.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_SYSCTL_H
#include <sys/sysctl.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
43

44 45 46 47
#ifdef sun
/* FIXME:  Unfortunately swapctl can't be used with largefile.... */
# undef _FILE_OFFSET_BITS
# define _FILE_OFFSET_BITS 32
48 49 50
# ifdef HAVE_SYS_RESOURCE_H
#  include <sys/resource.h>
# endif
51 52 53
# ifdef HAVE_SYS_STAT_H
#  include <sys/stat.h>
# endif
54 55 56 57
# include <sys/swap.h>
#endif


58 59 60 61 62 63 64 65 66 67 68
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "winnt.h"
#include "winternl.h"
#include "wine/exception.h"
#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(heap);

/* address where we try to map the system heap */
69 70
#define SYSTEM_HEAP_BASE  ((void*)0x80000000)
#define SYSTEM_HEAP_SIZE  0x1000000   /* Default heap size = 16Mb */
71 72 73 74 75 76 77 78 79

static HANDLE systemHeap;   /* globally shared heap */


/***********************************************************************
 *           HEAP_CreateSystemHeap
 *
 * Create the system heap.
 */
80
static inline HANDLE HEAP_CreateSystemHeap(void)
81 82 83 84
{
    int created;
    void *base;
    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 92 93 94 95 96 97 98 99 100 101 102 103
    created = (GetLastError() != ERROR_ALREADY_EXISTS);

    if (!(base = MapViewOfFileEx( map, FILE_MAP_ALL_ACCESS, 0, 0, 0, SYSTEM_HEAP_BASE )))
    {
        /* pre-defined address not available */
        ERR( "system heap base address %p not available\n", SYSTEM_HEAP_BASE );
        return 0;
    }

    if (created)  /* newly created heap */
    {
        systemHeap = RtlCreateHeap( HEAP_SHARED, base, SYSTEM_HEAP_SIZE,
                                    SYSTEM_HEAP_SIZE, NULL, NULL );
104
        SetEvent( event );
105 106 107 108 109
    }
    else
    {
        /* wait for the heap to be initialized */
        WaitForSingleObject( event, INFINITE );
110
        systemHeap = base;
111 112 113 114 115 116 117 118
    }
    CloseHandle( map );
    return systemHeap;
}


/***********************************************************************
 *           HeapCreate   (KERNEL32.@)
119 120 121
 *
 * Create a heap object.
 *
122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149
 * RETURNS
 *	Handle of heap: Success
 *	NULL: Failure
 */
HANDLE WINAPI HeapCreate(
                DWORD flags,       /* [in] Heap allocation flag */
                SIZE_T initialSize, /* [in] Initial heap size */
                SIZE_T maxSize      /* [in] Maximum heap size */
) {
    HANDLE ret;

    if ( flags & HEAP_SHARED )
    {
        if (!systemHeap) HEAP_CreateSystemHeap();
        else WARN( "Shared Heap requested, returning system heap.\n" );
        ret = systemHeap;
    }
    else
    {
        ret = RtlCreateHeap( flags, NULL, maxSize, initialSize, NULL, NULL );
        if (!ret) SetLastError( ERROR_NOT_ENOUGH_MEMORY );
    }
    return ret;
}


/***********************************************************************
 *           HeapDestroy   (KERNEL32.@)
150 151 152
 *
 * Destroy a heap object.
 *
153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220
 * RETURNS
 *	TRUE: Success
 *	FALSE: Failure
 */
BOOL WINAPI HeapDestroy( HANDLE heap /* [in] Handle of heap */ )
{
    if (heap == systemHeap)
    {
        WARN( "attempt to destroy system heap, returning TRUE!\n" );
        return TRUE;
    }
    if (!RtlDestroyHeap( heap )) return TRUE;
    SetLastError( ERROR_INVALID_HANDLE );
    return FALSE;
}


/***********************************************************************
 *           HeapCompact   (KERNEL32.@)
 */
SIZE_T WINAPI HeapCompact( HANDLE heap, DWORD flags )
{
    return RtlCompactHeap( heap, flags );
}


/***********************************************************************
 *           HeapValidate   (KERNEL32.@)
 * Validates a specified heap.
 *
 * NOTES
 *	Flags is ignored.
 *
 * RETURNS
 *	TRUE: Success
 *	FALSE: Failure
 */
BOOL WINAPI HeapValidate(
              HANDLE heap, /* [in] Handle to the heap */
              DWORD flags,   /* [in] Bit flags that control access during operation */
              LPCVOID block  /* [in] Optional pointer to memory block to validate */
) {
    return RtlValidateHeap( heap, flags, block );
}


/***********************************************************************
 *           HeapWalk   (KERNEL32.@)
 * Enumerates the memory blocks in a specified heap.
 *
 * TODO
 *   - handling of PROCESS_HEAP_ENTRY_MOVEABLE and
 *     PROCESS_HEAP_ENTRY_DDESHARE (needs heap.c support)
 *
 * RETURNS
 *	TRUE: Success
 *	FALSE: Failure
 */
BOOL WINAPI HeapWalk(
              HANDLE heap,               /* [in]  Handle to heap to enumerate */
              LPPROCESS_HEAP_ENTRY entry /* [out] Pointer to structure of enumeration info */
) {
    NTSTATUS ret = RtlWalkHeap( heap, entry );
    if (ret) SetLastError( RtlNtStatusToDosError(ret) );
    return !ret;
}


221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250
/***********************************************************************
 *           HeapLock   (KERNEL32.@)
 * Attempts to acquire the critical section object for a specified heap.
 *
 * RETURNS
 *	TRUE: Success
 *	FALSE: Failure
 */
BOOL WINAPI HeapLock(
              HANDLE heap /* [in] Handle of heap to lock for exclusive access */
) {
    return RtlLockHeap( heap );
}


/***********************************************************************
 *           HeapUnlock   (KERNEL32.@)
 * Releases ownership of the critical section object.
 *
 * RETURNS
 *	TRUE: Success
 *	FALSE: Failure
 */
BOOL WINAPI HeapUnlock(
              HANDLE heap /* [in] Handle to the heap to unlock */
) {
    return RtlUnlockHeap( heap );
}


251 252 253 254 255 256 257 258 259
/***********************************************************************
 *           GetProcessHeaps    (KERNEL32.@)
 */
DWORD WINAPI GetProcessHeaps( DWORD count, HANDLE *heaps )
{
    return RtlGetProcessHeaps( count, heaps );
}


260 261
/* These are needed so that we can call the functions from inside kernel itself */

262 263 264
/***********************************************************************
 *           HeapAlloc    (KERNEL32.@)
 */
265 266 267 268 269 270 271 272 273 274 275 276 277 278 279
LPVOID WINAPI HeapAlloc( HANDLE heap, DWORD flags, SIZE_T size )
{
    return RtlAllocateHeap( heap, flags, size );
}

BOOL WINAPI HeapFree( HANDLE heap, DWORD flags, LPVOID ptr )
{
    return RtlFreeHeap( heap, flags, ptr );
}

LPVOID WINAPI HeapReAlloc( HANDLE heap, DWORD flags, LPVOID ptr, SIZE_T size )
{
    return RtlReAllocateHeap( heap, flags, ptr, size );
}

280
SIZE_T WINAPI HeapSize( HANDLE heap, DWORD flags, LPCVOID ptr )
281 282 283 284
{
    return RtlSizeHeap( heap, flags, ptr );
}

285 286 287 288 289 290 291 292
BOOL WINAPI HeapQueryInformation( HANDLE heap, HEAP_INFORMATION_CLASS info_class,
                                  PVOID info, SIZE_T size_in, PSIZE_T size_out)
{
    NTSTATUS ret = RtlQueryHeapInformation( heap, info_class, info, size_in, size_out );
    if (ret) SetLastError( RtlNtStatusToDosError(ret) );
    return !ret;
}

293 294 295 296 297 298
BOOL WINAPI HeapSetInformation( HANDLE heap, HEAP_INFORMATION_CLASS infoclass, PVOID info, SIZE_T size)
{
    FIXME("%p %d %p %ld\n", heap, infoclass, info, size );
    return TRUE;
}

299 300 301 302 303 304 305 306 307 308 309 310 311 312
/*
 * Win32 Global heap functions (GlobalXXX).
 * These functions included in Win32 for compatibility with 16 bit Windows
 * Especially the moveable blocks and handles are oldish.
 * But the ability to directly allocate memory with GPTR and LPTR is widely
 * used.
 *
 * The handle stuff looks horrible, but it's implemented almost like Win95
 * does it.
 *
 */

#define MAGIC_GLOBAL_USED 0x5342
#define HANDLE_TO_INTERN(h)  ((PGLOBAL32_INTERN)(((char *)(h))-2))
313
#define INTERN_TO_HANDLE(i)  (&((i)->Pointer))
314
#define POINTER_TO_HANDLE(p) (*(((const HGLOBAL *)(p))-2))
315 316 317 318 319 320 321
#define ISHANDLE(h)          (((ULONG_PTR)(h)&2)!=0)
#define ISPOINTER(h)         (((ULONG_PTR)(h)&2)==0)
/* align the storage needed for the HGLOBAL on an 8byte boundary thus
 * GlobalAlloc/GlobalReAlloc'ing with GMEM_MOVEABLE of memory with
 * size = 8*k, where k=1,2,3,... alloc's exactly the given size.
 * The Minolta DiMAGE Image Viewer heavily relies on this, corrupting
 * the output jpeg's > 1 MB if not */
322
#define HGLOBAL_STORAGE      (sizeof(HGLOBAL)*2)
323

324 325
#include "pshpack1.h"

326 327 328
typedef struct __GLOBAL32_INTERN
{
   WORD         Magic;
329
   LPVOID       Pointer;
330 331 332 333
   BYTE         Flags;
   BYTE         LockCount;
} GLOBAL32_INTERN, *PGLOBAL32_INTERN;

334
#include "poppack.h"
335 336 337

/***********************************************************************
 *           GlobalAlloc   (KERNEL32.@)
338 339 340
 *
 * Allocate a global memory object.
 *
341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360
 * RETURNS
 *      Handle: Success
 *      NULL: Failure
 */
HGLOBAL WINAPI GlobalAlloc(
                 UINT flags, /* [in] Object allocation attributes */
                 SIZE_T size /* [in] Number of bytes to allocate */
) {
   PGLOBAL32_INTERN     pintern;
   DWORD                hpflags;
   LPVOID               palloc;

   if(flags&GMEM_ZEROINIT)
      hpflags=HEAP_ZERO_MEMORY;
   else
      hpflags=0;

   if((flags & GMEM_MOVEABLE)==0) /* POINTER */
   {
      palloc=HeapAlloc(GetProcessHeap(), hpflags, size);
361
      TRACE( "(flags=%04x) returning %p\n",  flags, palloc );
362
      return palloc;
363 364 365
   }
   else  /* HANDLE */
   {
366 367 368 369 370 371
      if (size > INT_MAX-HGLOBAL_STORAGE)
      {
          SetLastError(ERROR_OUTOFMEMORY);
          return 0;
      }

372 373 374 375 376
      RtlLockHeap(GetProcessHeap());

      pintern = HeapAlloc(GetProcessHeap(), 0, sizeof(GLOBAL32_INTERN));
      if (pintern)
      {
377 378 379
          /* Mask out obsolete flags */
          flags &= ~(GMEM_LOWER | GMEM_NOCOMPACT | GMEM_NOT_BANKED | GMEM_NOTIFY);

380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402
          pintern->Magic = MAGIC_GLOBAL_USED;
          pintern->Flags = flags >> 8;
          pintern->LockCount = 0;

          if (size)
          {
              palloc = HeapAlloc(GetProcessHeap(), hpflags, size+HGLOBAL_STORAGE);
              if (!palloc)
              {
                  HeapFree(GetProcessHeap(), 0, pintern);
                  pintern = NULL;
              }
              else
              {
                  *(HGLOBAL *)palloc = INTERN_TO_HANDLE(pintern);
                  pintern->Pointer = (char *)palloc + HGLOBAL_STORAGE;
              }
          }
          else
              pintern->Pointer = NULL;
      }

      RtlUnlockHeap(GetProcessHeap());
403 404 405 406
      if (!pintern) return 0;
      TRACE( "(flags=%04x) returning handle %p pointer %p\n",
             flags, INTERN_TO_HANDLE(pintern), pintern->Pointer );
      return INTERN_TO_HANDLE(pintern);
407 408 409 410 411 412
   }
}


/***********************************************************************
 *           GlobalLock   (KERNEL32.@)
413
 *
414 415 416 417
 * Lock a global memory object and return a pointer to first byte of the memory
 *
 * PARAMS
 *  hmem [I] Handle of the global memory object
418
 *
419
 * RETURNS
420 421 422 423 424 425
 *  Success: Pointer to first byte of the memory block
 *  Failure: NULL
 *
 * NOTES
 *   When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
 *
426
 */
427
LPVOID WINAPI GlobalLock(HGLOBAL hmem)
428 429 430 431 432 433 434 435 436 437 438 439 440 441
{
    PGLOBAL32_INTERN pintern;
    LPVOID           palloc;

    if (ISPOINTER(hmem))
        return IsBadReadPtr(hmem, 1) ? NULL : hmem;

    RtlLockHeap(GetProcessHeap());
    __TRY
    {
        pintern = HANDLE_TO_INTERN(hmem);
        if (pintern->Magic == MAGIC_GLOBAL_USED)
        {
            palloc = pintern->Pointer;
442 443
            if (!pintern->Pointer)
                SetLastError(ERROR_DISCARDED);
444 445
            else if (pintern->LockCount < GMEM_LOCKCOUNT)
                pintern->LockCount++;
446 447 448
        }
        else
        {
449
            WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
450 451 452 453
            palloc = NULL;
            SetLastError(ERROR_INVALID_HANDLE);
        }
    }
454
    __EXCEPT_PAGE_FAULT
455
    {
456
        WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
457 458 459 460 461 462 463 464 465 466 467
        palloc = NULL;
        SetLastError(ERROR_INVALID_HANDLE);
    }
    __ENDTRY
    RtlUnlockHeap(GetProcessHeap());
    return palloc;
}


/***********************************************************************
 *           GlobalUnlock   (KERNEL32.@)
468 469 470
 *
 * Unlock a global memory object.
 *
471 472 473
 * PARAMS
 *  hmem [I] Handle of the global memory object
 *
474
 * RETURNS
475 476 477 478 479 480
 *  Success: Object is still locked
 *  Failure: FALSE (The Object is unlocked)
 *
 * NOTES
 *   When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
 *
481
 */
482 483
BOOL WINAPI GlobalUnlock(HGLOBAL hmem)
{
484 485 486
    PGLOBAL32_INTERN pintern;
    BOOL locked;

487
    if (ISPOINTER(hmem)) return TRUE;
488 489 490 491 492 493 494

    RtlLockHeap(GetProcessHeap());
    __TRY
    {
        pintern=HANDLE_TO_INTERN(hmem);
        if(pintern->Magic==MAGIC_GLOBAL_USED)
        {
495 496
            if(pintern->LockCount)
            {
497
                pintern->LockCount--;
498 499 500 501 502 503 504 505 506
                locked = (pintern->LockCount != 0);
                if (!locked) SetLastError(NO_ERROR);
            }
            else
            {
                WARN("%p not locked\n", hmem);
                SetLastError(ERROR_NOT_LOCKED);
                locked = FALSE;
            }
507 508 509
        }
        else
        {
510
            WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
511 512 513 514
            SetLastError(ERROR_INVALID_HANDLE);
            locked=FALSE;
        }
    }
515
    __EXCEPT_PAGE_FAULT
516
    {
517
        WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
518 519 520 521 522 523 524 525 526 527 528
        SetLastError( ERROR_INVALID_PARAMETER );
        locked=FALSE;
    }
    __ENDTRY
    RtlUnlockHeap(GetProcessHeap());
    return locked;
}


/***********************************************************************
 *           GlobalHandle   (KERNEL32.@)
529 530
 *
 * Get the handle associated with the pointer to a global memory block.
531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553
 *
 * RETURNS
 *      Handle: Success
 *      NULL: Failure
 */
HGLOBAL WINAPI GlobalHandle(
                 LPCVOID pmem /* [in] Pointer to global memory block */
) {
    HGLOBAL handle;
    PGLOBAL32_INTERN  maybe_intern;
    LPCVOID test;

    if (!pmem)
    {
        SetLastError( ERROR_INVALID_PARAMETER );
        return 0;
    }

    RtlLockHeap(GetProcessHeap());
    __TRY
    {
        handle = 0;

554
        /* note that if pmem is a pointer to a block allocated by        */
555 556 557 558 559 560 561 562 563 564 565 566 567 568 569
        /* GlobalAlloc with GMEM_MOVEABLE then magic test in HeapValidate  */
        /* will fail.                                                      */
        if (ISPOINTER(pmem)) {
            if (HeapValidate( GetProcessHeap(), 0, pmem )) {
                handle = (HGLOBAL)pmem;  /* valid fixed block */
                break;
            }
            handle = POINTER_TO_HANDLE(pmem);
        } else
            handle = (HGLOBAL)pmem;

        /* Now test handle either passed in or retrieved from pointer */
        maybe_intern = HANDLE_TO_INTERN( handle );
        if (maybe_intern->Magic == MAGIC_GLOBAL_USED) {
            test = maybe_intern->Pointer;
570
            if (HeapValidate( GetProcessHeap(), 0, (const char *)test - HGLOBAL_STORAGE ) && /* obj(-handle) valid arena? */
571 572 573 574 575 576
                HeapValidate( GetProcessHeap(), 0, maybe_intern ))  /* intern valid arena? */
                break;  /* valid moveable block */
        }
        handle = 0;
        SetLastError( ERROR_INVALID_HANDLE );
    }
577
    __EXCEPT_PAGE_FAULT
578 579 580 581 582 583 584 585 586 587 588 589 590
    {
        SetLastError( ERROR_INVALID_HANDLE );
        handle = 0;
    }
    __ENDTRY
    RtlUnlockHeap(GetProcessHeap());

    return handle;
}


/***********************************************************************
 *           GlobalReAlloc   (KERNEL32.@)
591 592 593
 *
 * Change the size or attributes of a global memory object.
 *
594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624
 * RETURNS
 *      Handle: Success
 *      NULL: Failure
 */
HGLOBAL WINAPI GlobalReAlloc(
                 HGLOBAL hmem, /* [in] Handle of global memory object */
                 SIZE_T size,  /* [in] New size of block */
                 UINT flags    /* [in] How to reallocate object */
) {
   LPVOID               palloc;
   HGLOBAL            hnew;
   PGLOBAL32_INTERN     pintern;
   DWORD heap_flags = (flags & GMEM_ZEROINIT) ? HEAP_ZERO_MEMORY : 0;

   hnew = 0;
   RtlLockHeap(GetProcessHeap());
   if(flags & GMEM_MODIFY) /* modify flags */
   {
      if( ISPOINTER(hmem) && (flags & GMEM_MOVEABLE))
      {
         /* make a fixed block moveable
          * actually only NT is able to do this. But it's soo simple
          */
         if (hmem == 0)
         {
             WARN("GlobalReAlloc with null handle!\n");
             SetLastError( ERROR_NOACCESS );
             hnew = 0;
         }
         else
         {
625
             size = HeapSize(GetProcessHeap(), 0, hmem);
626 627
             hnew = GlobalAlloc(flags, size);
             palloc = GlobalLock(hnew);
628
             memcpy(palloc, hmem, size);
629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650
             GlobalUnlock(hnew);
             GlobalFree(hmem);
         }
      }
      else if( ISPOINTER(hmem) &&(flags & GMEM_DISCARDABLE))
      {
         /* change the flags to make our block "discardable" */
         pintern=HANDLE_TO_INTERN(hmem);
         pintern->Flags = pintern->Flags | (GMEM_DISCARDABLE >> 8);
         hnew=hmem;
      }
      else
      {
         SetLastError(ERROR_INVALID_PARAMETER);
         hnew = 0;
      }
   }
   else
   {
      if(ISPOINTER(hmem))
      {
         /* reallocate fixed memory */
651
         hnew=HeapReAlloc(GetProcessHeap(), heap_flags, hmem, size);
652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670
      }
      else
      {
         /* reallocate a moveable block */
         pintern=HANDLE_TO_INTERN(hmem);

#if 0
/* Apparently Windows doesn't care whether the handle is locked at this point */
/* See also the same comment in GlobalFree() */
         if(pintern->LockCount>1) {
            ERR("handle 0x%08lx is still locked, cannot realloc!\n",(DWORD)hmem);
            SetLastError(ERROR_INVALID_HANDLE);
         } else
#endif
         if(size!=0)
         {
            hnew=hmem;
            if(pintern->Pointer)
            {
671 672 673 674 675 676
               if(size > INT_MAX-HGLOBAL_STORAGE)
               {
                   SetLastError(ERROR_OUTOFMEMORY);
                   hnew = 0;
               }
               else if((palloc = HeapReAlloc(GetProcessHeap(), heap_flags,
677 678 679 680 681 682 683 684
                                   (char *) pintern->Pointer-HGLOBAL_STORAGE,
                                   size+HGLOBAL_STORAGE)) == NULL)
                   hnew = 0; /* Block still valid */
               else
                   pintern->Pointer = (char *)palloc+HGLOBAL_STORAGE;
            }
            else
            {
685 686 687 688 689 690
                if(size > INT_MAX-HGLOBAL_STORAGE)
                {
                    SetLastError(ERROR_OUTOFMEMORY);
                    hnew = 0;
                }
                else if((palloc=HeapAlloc(GetProcessHeap(), heap_flags, size+HGLOBAL_STORAGE))
691 692 693 694 695 696 697 698 699 700 701
                   == NULL)
                    hnew = 0;
                else
                {
                    *(HGLOBAL *)palloc = hmem;
                    pintern->Pointer = (char *)palloc + HGLOBAL_STORAGE;
                }
            }
         }
         else
         {
702
            if (pintern->LockCount == 0)
703
            {
704 705 706 707 708 709
                if(pintern->Pointer)
                {
                    HeapFree(GetProcessHeap(), 0, (char *) pintern->Pointer-HGLOBAL_STORAGE);
                    pintern->Pointer = NULL;
                }
                hnew = hmem;
710
            }
711 712
            else
                WARN("not freeing memory associated with locked handle\n");
713 714 715 716 717 718 719 720 721 722
         }
      }
   }
   RtlUnlockHeap(GetProcessHeap());
   return hnew;
}


/***********************************************************************
 *           GlobalFree   (KERNEL32.@)
723 724 725
 *
 * Free a global memory object.
 *
726 727 728
 * PARAMS
 *  hmem [I] Handle of the global memory object
 *
729
 * RETURNS
730 731 732 733 734 735
 *  Success: NULL
 *  Failure: The provided handle
 *
 * NOTES
 *   When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
 *
736
 */
737 738
HGLOBAL WINAPI GlobalFree(HGLOBAL hmem)
{
739 740 741 742 743 744 745 746 747
    PGLOBAL32_INTERN pintern;
    HGLOBAL hreturned;

    RtlLockHeap(GetProcessHeap());
    __TRY
    {
        hreturned = 0;
        if(ISPOINTER(hmem)) /* POINTER */
        {
748
            if(!HeapFree(GetProcessHeap(), 0, hmem))
749 750 751 752
            {
                SetLastError(ERROR_INVALID_HANDLE);
                hreturned = hmem;
            }
753 754 755 756 757 758 759
        }
        else  /* HANDLE */
        {
            pintern=HANDLE_TO_INTERN(hmem);

            if(pintern->Magic==MAGIC_GLOBAL_USED)
            {
760
                pintern->Magic = 0xdead;
761 762 763 764 765 766 767 768 769 770 771 772

                /* WIN98 does not make this test. That is you can free a */
                /* block you have not unlocked. Go figure!!              */
                /* if(pintern->LockCount!=0)  */
                /*    SetLastError(ERROR_INVALID_HANDLE);  */

                if(pintern->Pointer)
                    if(!HeapFree(GetProcessHeap(), 0, (char *)(pintern->Pointer)-HGLOBAL_STORAGE))
                        hreturned=hmem;
                if(!HeapFree(GetProcessHeap(), 0, pintern))
                    hreturned=hmem;
            }
773 774 775 776 777 778
            else
            {
                WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
                SetLastError(ERROR_INVALID_HANDLE);
                hreturned = hmem;
            }
779 780
        }
    }
781
    __EXCEPT_PAGE_FAULT
782
    {
783
        ERR("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
784 785 786 787 788 789 790 791 792 793 794
        SetLastError( ERROR_INVALID_PARAMETER );
        hreturned = hmem;
    }
    __ENDTRY
    RtlUnlockHeap(GetProcessHeap());
    return hreturned;
}


/***********************************************************************
 *           GlobalSize   (KERNEL32.@)
795 796 797
 *
 * Get the size of a global memory object.
 *
798 799 800
 * PARAMS
 *  hmem [I] Handle of the global memory object
 *
801
 * RETURNS
802 803 804 805 806 807
 *  Failure: 0
 *  Success: Size in Bytes of the global memory object
 *
 * NOTES
 *   When the handle is invalid, last error is set to ERROR_INVALID_HANDLE
 *
808
 */
809 810
SIZE_T WINAPI GlobalSize(HGLOBAL hmem)
{
811
   SIZE_T               retval;
812 813
   PGLOBAL32_INTERN     pintern;

814 815 816 817 818
   if (!((ULONG_PTR)hmem >> 16))
   {
       SetLastError(ERROR_INVALID_HANDLE);
       return 0;
   }
819 820 821

   if(ISPOINTER(hmem))
   {
822
      retval=HeapSize(GetProcessHeap(), 0, hmem);
823

824
      if (retval == ~0ul) /* It might be a GMEM_MOVEABLE data pointer */
825
      {
826 827
          retval = HeapSize(GetProcessHeap(), 0, (char*)hmem - HGLOBAL_STORAGE);
          if (retval != ~0ul) retval -= HGLOBAL_STORAGE;
828
      }
829 830 831 832 833 834 835 836 837 838 839 840
   }
   else
   {
      RtlLockHeap(GetProcessHeap());
      pintern=HANDLE_TO_INTERN(hmem);

      if(pintern->Magic==MAGIC_GLOBAL_USED)
      {
         if (!pintern->Pointer) /* handle case of GlobalAlloc( ??,0) */
             retval = 0;
         else
         {
841 842
             retval = HeapSize(GetProcessHeap(), 0, (char *)pintern->Pointer - HGLOBAL_STORAGE );
             if (retval != ~0ul) retval -= HGLOBAL_STORAGE;
843 844 845 846
         }
      }
      else
      {
847 848
         WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
         SetLastError(ERROR_INVALID_HANDLE);
849 850 851 852
         retval=0;
      }
      RtlUnlockHeap(GetProcessHeap());
   }
853
   if (retval == ~0ul) retval = 0;
854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895
   return retval;
}


/***********************************************************************
 *           GlobalWire   (KERNEL32.@)
 */
LPVOID WINAPI GlobalWire(HGLOBAL hmem)
{
   return GlobalLock( hmem );
}


/***********************************************************************
 *           GlobalUnWire   (KERNEL32.@)
 */
BOOL WINAPI GlobalUnWire(HGLOBAL hmem)
{
   return GlobalUnlock( hmem);
}


/***********************************************************************
 *           GlobalFix   (KERNEL32.@)
 */
VOID WINAPI GlobalFix(HGLOBAL hmem)
{
    GlobalLock( hmem );
}


/***********************************************************************
 *           GlobalUnfix   (KERNEL32.@)
 */
VOID WINAPI GlobalUnfix(HGLOBAL hmem)
{
   GlobalUnlock( hmem);
}


/***********************************************************************
 *           GlobalFlags   (KERNEL32.@)
896 897
 *
 * Get information about a global memory object.
898
 *
899 900
 * PARAMS
 *  hmem [I] Handle of the global memory object 
901 902
 *
 * RETURNS
903 904 905
 *  Failure: GMEM_INVALID_HANDLE, when the provided handle is invalid 
 *  Success: Value specifying allocation flags and lock count
 *
906
 */
907 908
UINT WINAPI GlobalFlags(HGLOBAL hmem)
{
909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927
   DWORD                retval;
   PGLOBAL32_INTERN     pintern;

   if(ISPOINTER(hmem))
   {
      retval=0;
   }
   else
   {
      RtlLockHeap(GetProcessHeap());
      pintern=HANDLE_TO_INTERN(hmem);
      if(pintern->Magic==MAGIC_GLOBAL_USED)
      {
         retval=pintern->LockCount + (pintern->Flags<<8);
         if(pintern->Pointer==0)
            retval|= GMEM_DISCARDED;
      }
      else
      {
928 929 930
         WARN("invalid handle %p (Magic: 0x%04x)\n", hmem, pintern->Magic);
         SetLastError(ERROR_INVALID_HANDLE);
         retval = GMEM_INVALID_HANDLE;
931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948
      }
      RtlUnlockHeap(GetProcessHeap());
   }
   return retval;
}


/***********************************************************************
 *           GlobalCompact   (KERNEL32.@)
 */
SIZE_T WINAPI GlobalCompact( DWORD minfree )
{
    return 0;  /* GlobalCompact does nothing in Win32 */
}


/***********************************************************************
 *           LocalAlloc   (KERNEL32.@)
949 950 951
 *
 * Allocate a local memory object.
 *
952 953 954
 * RETURNS
 *	Handle: Success
 *	NULL: Failure
955 956 957 958
 *
 * NOTES
 *  Windows memory management does not provide a separate local heap
 *  and global heap.
959 960 961 962 963
 */
HLOCAL WINAPI LocalAlloc(
                UINT flags, /* [in] Allocation attributes */
                SIZE_T size /* [in] Number of bytes to allocate */
) {
964
    return GlobalAlloc( flags, size );
965 966 967 968 969 970 971 972 973 974 975 976 977 978
}


/***********************************************************************
 *           LocalCompact   (KERNEL32.@)
 */
SIZE_T WINAPI LocalCompact( UINT minfree )
{
    return 0;  /* LocalCompact does nothing in Win32 */
}


/***********************************************************************
 *           LocalFlags   (KERNEL32.@)
979 980 981
 *
 * Get information about a local memory object.
 *
982 983 984
 * RETURNS
 *	Value specifying allocation flags and lock count.
 *	LMEM_INVALID_HANDLE: Failure
985 986 987 988
 *
 * NOTES
 *  Windows memory management does not provide a separate local heap
 *  and global heap.
989 990 991 992
 */
UINT WINAPI LocalFlags(
              HLOCAL handle /* [in] Handle of memory object */
) {
993
    return GlobalFlags( handle );
994 995 996 997 998
}


/***********************************************************************
 *           LocalFree   (KERNEL32.@)
999 1000 1001
 *
 * Free a local memory object.
 *
1002 1003 1004
 * RETURNS
 *	NULL: Success
 *	Handle: Failure
1005 1006 1007 1008
 *
 * NOTES
 *  Windows memory management does not provide a separate local heap
 *  and global heap.
1009 1010 1011 1012
 */
HLOCAL WINAPI LocalFree(
                HLOCAL handle /* [in] Handle of memory object */
) {
1013
    return GlobalFree( handle );
1014 1015 1016 1017 1018
}


/***********************************************************************
 *           LocalHandle   (KERNEL32.@)
1019 1020 1021
 *
 * Get the handle associated with the pointer to a local memory block.
 *
1022 1023 1024
 * RETURNS
 *	Handle: Success
 *	NULL: Failure
1025 1026 1027 1028
 *
 * NOTES
 *  Windows memory management does not provide a separate local heap
 *  and global heap.
1029 1030
 */
HLOCAL WINAPI LocalHandle(
1031
                LPCVOID ptr /* [in] Address of local memory block */
1032
) {
1033
    return GlobalHandle( ptr );
1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044
}


/***********************************************************************
 *           LocalLock   (KERNEL32.@)
 * Locks a local memory object and returns pointer to the first byte
 * of the memory block.
 *
 * RETURNS
 *	Pointer: Success
 *	NULL: Failure
1045 1046 1047 1048
 *
 * NOTES
 *  Windows memory management does not provide a separate local heap
 *  and global heap.
1049 1050 1051 1052
 */
LPVOID WINAPI LocalLock(
              HLOCAL handle /* [in] Address of local memory object */
) {
1053
    return GlobalLock( handle );
1054 1055 1056 1057 1058
}


/***********************************************************************
 *           LocalReAlloc   (KERNEL32.@)
1059 1060 1061
 *
 * Change the size or attributes of a local memory object.
 *
1062 1063 1064
 * RETURNS
 *	Handle: Success
 *	NULL: Failure
1065 1066 1067 1068
 *
 * NOTES
 *  Windows memory management does not provide a separate local heap
 *  and global heap.
1069 1070 1071 1072 1073 1074
 */
HLOCAL WINAPI LocalReAlloc(
                HLOCAL handle, /* [in] Handle of memory object */
                SIZE_T size,   /* [in] New size of block */
                UINT flags     /* [in] How to reallocate object */
) {
1075
    return GlobalReAlloc( handle, size, flags );
1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089
}


/***********************************************************************
 *           LocalShrink   (KERNEL32.@)
 */
SIZE_T WINAPI LocalShrink( HGLOBAL handle, UINT newsize )
{
    return 0;  /* LocalShrink does nothing in Win32 */
}


/***********************************************************************
 *           LocalSize   (KERNEL32.@)
1090 1091 1092
 *
 * Get the size of a local memory object.
 *
1093 1094 1095
 * RETURNS
 *	Size: Success
 *	0: Failure
1096 1097 1098 1099
 *
 * NOTES
 *  Windows memory management does not provide a separate local heap
 *  and global heap.
1100 1101 1102 1103
 */
SIZE_T WINAPI LocalSize(
              HLOCAL handle /* [in] Handle of memory object */
) {
1104
    return GlobalSize( handle );
1105 1106 1107 1108 1109
}


/***********************************************************************
 *           LocalUnlock   (KERNEL32.@)
1110 1111 1112
 *
 * Unlock a local memory object.
 *
1113 1114 1115
 * RETURNS
 *	TRUE: Object is still locked
 *	FALSE: Object is unlocked
1116 1117 1118 1119
 *
 * NOTES
 *  Windows memory management does not provide a separate local heap
 *  and global heap.
1120 1121 1122
 */
BOOL WINAPI LocalUnlock(
              HLOCAL handle /* [in] Handle of memory object */
1123 1124 1125 1126 1127 1128 1129 1130
)
{
    if (ISPOINTER( handle ))
    {
        SetLastError( ERROR_NOT_LOCKED );
        return FALSE;
    }

1131
    return GlobalUnlock( handle );
1132 1133 1134
}


1135
/***********************************************************************
1136 1137
 *           GlobalMemoryStatusEx   (KERNEL32.@)
 * A version of GlobalMemoryStatus that can deal with memory over 4GB
1138 1139
 *
 * RETURNS
1140
 *	TRUE
1141
 */
1142 1143 1144
BOOL WINAPI GlobalMemoryStatusEx( LPMEMORYSTATUSEX lpmemex )
{
    static MEMORYSTATUSEX	cached_memstatus;
1145 1146 1147 1148
    static int cache_lastchecked = 0;
    SYSTEM_INFO si;
#ifdef linux
    FILE *f;
1149
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__)
1150
    unsigned long val;
1151 1152
    int mib[2];
    size_t size_sys;
1153
#elif defined(__APPLE__)
1154 1155
    unsigned int val;
    int mib[2];
1156 1157
    size_t size_sys;
#elif defined(sun)
1158
    unsigned long pagesize,maxpages,freepages,swapspace,swapfree;
1159 1160 1161 1162
    struct anoninfo swapinf;
    int rval;
#endif

1163 1164 1165 1166 1167 1168
    if (lpmemex->dwLength != sizeof(*lpmemex))
    {
        SetLastError( ERROR_INVALID_PARAMETER );
        return FALSE;
    }

1169
    if (time(NULL)==cache_lastchecked) {
1170
	*lpmemex = cached_memstatus;
1171
	return TRUE;
1172 1173 1174
    }
    cache_lastchecked = time(NULL);

1175 1176 1177 1178 1179
    lpmemex->dwMemoryLoad     = 0;
    lpmemex->ullTotalPhys     = 16*1024*1024;
    lpmemex->ullAvailPhys     = 16*1024*1024;
    lpmemex->ullTotalPageFile = 16*1024*1024;
    lpmemex->ullAvailPageFile = 16*1024*1024;
1180 1181 1182 1183 1184 1185

#ifdef linux
    f = fopen( "/proc/meminfo", "r" );
    if (f)
    {
        char buffer[256];
1186
        unsigned long total, used, free, shared, buffers, cached;
1187

1188 1189
        lpmemex->ullTotalPhys = lpmemex->ullAvailPhys = 0;
        lpmemex->ullTotalPageFile = lpmemex->ullAvailPageFile = 0;
1190 1191 1192
        while (fgets( buffer, sizeof(buffer), f ))
        {
	    /* old style /proc/meminfo ... */
1193 1194
            if (sscanf( buffer, "Mem: %lu %lu %lu %lu %lu %lu",
                        &total, &used, &free, &shared, &buffers, &cached ))
1195
            {
1196 1197
                lpmemex->ullTotalPhys += total;
                lpmemex->ullAvailPhys += free + buffers + cached;
1198
            }
1199
            if (sscanf( buffer, "Swap: %lu %lu %lu", &total, &used, &free ))
1200
            {
1201 1202
                lpmemex->ullTotalPageFile += total;
                lpmemex->ullAvailPageFile += free;
1203 1204 1205
            }

            /* new style /proc/meminfo ... */
1206
            if (sscanf(buffer, "MemTotal: %lu", &total))
1207
                lpmemex->ullTotalPhys = total*1024;
1208
            if (sscanf(buffer, "MemFree: %lu", &free))
1209
                lpmemex->ullAvailPhys = free*1024;
1210
            if (sscanf(buffer, "SwapTotal: %lu", &total))
1211
                lpmemex->ullTotalPageFile = total*1024;
1212
            if (sscanf(buffer, "SwapFree: %lu", &free))
1213
                lpmemex->ullAvailPageFile = free*1024;
1214
            if (sscanf(buffer, "Buffers: %lu", &buffers))
1215
                lpmemex->ullAvailPhys += buffers*1024;
1216
            if (sscanf(buffer, "Cached: %lu", &cached))
1217
                lpmemex->ullAvailPhys += cached*1024;
1218 1219 1220
        }
        fclose( f );
    }
1221
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
1222
    mib[0] = CTL_HW;
1223
    mib[1] = HW_PHYSMEM;
1224 1225 1226 1227 1228 1229 1230 1231 1232 1233
    size_sys = sizeof(val);
    sysctl(mib, 2, &val, &size_sys, NULL, 0);
    if (val) lpmemex->ullTotalPhys = val;
    mib[1] = HW_USERMEM;
    size_sys = sizeof(val);
    sysctl(mib, 2, &val, &size_sys, NULL, 0);
    if (!val) val = lpmemex->ullTotalPhys;
    lpmemex->ullAvailPhys = val;
    lpmemex->ullTotalPageFile = val;
    lpmemex->ullAvailPageFile = val;
1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253
#elif defined ( sun )
    pagesize=sysconf(_SC_PAGESIZE);
    maxpages=sysconf(_SC_PHYS_PAGES);
    freepages=sysconf(_SC_AVPHYS_PAGES);
    rval=swapctl(SC_AINFO, &swapinf);
    if(rval >-1)
    {
        swapspace=swapinf.ani_max*pagesize;
        swapfree=swapinf.ani_free*pagesize;
    }else
    {

        WARN("Swap size cannot be determined , assuming equal to physical memory\n");
        swapspace=maxpages*pagesize;
        swapfree=maxpages*pagesize;
    }
    lpmemex->ullTotalPhys=pagesize*maxpages;
    lpmemex->ullAvailPhys = pagesize*freepages;
    lpmemex->ullTotalPageFile = swapspace;
    lpmemex->ullAvailPageFile = swapfree;
1254
#endif
1255

1256 1257 1258 1259 1260 1261
    if (lpmemex->ullTotalPhys)
    {
        lpmemex->dwMemoryLoad = (lpmemex->ullTotalPhys-lpmemex->ullAvailPhys)
                                  / (lpmemex->ullTotalPhys / 100);
    }

1262 1263 1264 1265 1266 1267 1268
    /* Win98 returns only the swapsize in ullTotalPageFile/ullAvailPageFile,
       WinXP returns the size of physical memory + swapsize;
       mimic the behavior of XP.
       Note: Project2k refuses to start if it sees less than 1Mb of free swap.
    */
    lpmemex->ullTotalPageFile += lpmemex->ullTotalPhys;
    lpmemex->ullAvailPageFile += lpmemex->ullAvailPhys;
1269

1270 1271 1272 1273 1274 1275 1276
    /* Titan Quest refuses to run if TotalPageFile <= ullTotalPhys */
    if(lpmemex->ullTotalPageFile == lpmemex->ullTotalPhys)
    {
        lpmemex->ullTotalPhys -= 1;
        lpmemex->ullAvailPhys -= 1;
    }

1277 1278
    /* FIXME: should do something for other systems */
    GetSystemInfo(&si);
1279
    lpmemex->ullTotalVirtual  = (ULONG_PTR)si.lpMaximumApplicationAddress-(ULONG_PTR)si.lpMinimumApplicationAddress;
1280
    /* FIXME: we should track down all the already allocated VM pages and subtract them, for now arbitrarily remove 64KB so that it matches NT */
1281 1282 1283 1284 1285 1286 1287 1288 1289
    lpmemex->ullAvailVirtual  = lpmemex->ullTotalVirtual-64*1024;

    /* MSDN says about AvailExtendedVirtual: Size of unreserved and uncommitted
       memory in the extended portion of the virtual address space of the calling
       process, in bytes.
       However, I don't know what this means, so set it to zero :(
    */
    lpmemex->ullAvailExtendedVirtual = 0;

1290
    cached_memstatus = *lpmemex;
1291

1292
    TRACE("<-- LPMEMORYSTATUSEX: dwLength %d, dwMemoryLoad %d, ullTotalPhys %s, ullAvailPhys %s,"
1293 1294 1295 1296 1297 1298 1299
          " ullTotalPageFile %s, ullAvailPageFile %s, ullTotalVirtual %s, ullAvailVirtual %s\n",
          lpmemex->dwLength, lpmemex->dwMemoryLoad, wine_dbgstr_longlong(lpmemex->ullTotalPhys),
          wine_dbgstr_longlong(lpmemex->ullAvailPhys), wine_dbgstr_longlong(lpmemex->ullTotalPageFile),
          wine_dbgstr_longlong(lpmemex->ullAvailPageFile), wine_dbgstr_longlong(lpmemex->ullTotalVirtual),
          wine_dbgstr_longlong(lpmemex->ullAvailVirtual) );

    return TRUE;
1300 1301 1302
}

/***********************************************************************
1303 1304 1305
 *           GlobalMemoryStatus   (KERNEL32.@)
 * Provides information about the status of the memory, so apps can tell
 * roughly how much they are able to allocate
1306 1307 1308 1309
 *
 * RETURNS
 *	None
 */
1310
VOID WINAPI GlobalMemoryStatus( LPMEMORYSTATUS lpBuffer )
1311
{
1312
    MEMORYSTATUSEX memstatus;
1313
    OSVERSIONINFOW osver;
1314
    IMAGE_NT_HEADERS *nt = RtlImageNtHeader( GetModuleHandleW(0) );
1315 1316 1317 1318

    /* Because GlobalMemoryStatus is identical to GlobalMemoryStatusEX save
       for one extra field in the struct, and the lack of a bug, we simply
       call GlobalMemoryStatusEx and copy the values across. */
1319
    memstatus.dwLength = sizeof(memstatus);
1320 1321 1322 1323 1324 1325 1326 1327
    GlobalMemoryStatusEx(&memstatus);

    lpBuffer->dwLength = sizeof(*lpBuffer);
    lpBuffer->dwMemoryLoad = memstatus.dwMemoryLoad;

    /* Windows 2000 and later report -1 when values are greater than 4 Gb.
     * NT reports values modulo 4 Gb.
     */
1328 1329 1330

    osver.dwOSVersionInfoSize = sizeof(osver);
    GetVersionExW(&osver);
1331

1332
    if ( osver.dwMajorVersion >= 5 || osver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS )
1333
    {
1334 1335 1336 1337 1338 1339 1340
        lpBuffer->dwTotalPhys = min( memstatus.ullTotalPhys, MAXDWORD );
        lpBuffer->dwAvailPhys = min( memstatus.ullAvailPhys, MAXDWORD );
        lpBuffer->dwTotalPageFile = min( memstatus.ullTotalPageFile, MAXDWORD );
        lpBuffer->dwAvailPageFile = min( memstatus.ullAvailPageFile, MAXDWORD );
        lpBuffer->dwTotalVirtual = min( memstatus.ullTotalVirtual, MAXDWORD );
        lpBuffer->dwAvailVirtual = min( memstatus.ullAvailVirtual, MAXDWORD );

1341 1342 1343
    }
    else	/* duplicate NT bug */
    {
1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359
        lpBuffer->dwTotalPhys = memstatus.ullTotalPhys;
        lpBuffer->dwAvailPhys = memstatus.ullAvailPhys;
        lpBuffer->dwTotalPageFile = memstatus.ullTotalPageFile;
        lpBuffer->dwAvailPageFile = memstatus.ullAvailPageFile;
        lpBuffer->dwTotalVirtual = memstatus.ullTotalVirtual;
        lpBuffer->dwAvailVirtual = memstatus.ullAvailVirtual;
    }

    /* values are limited to 2Gb unless the app has the IMAGE_FILE_LARGE_ADDRESS_AWARE flag */
    /* page file sizes are not limited (Adobe Illustrator 8 depends on this) */
    if (!(nt->FileHeader.Characteristics & IMAGE_FILE_LARGE_ADDRESS_AWARE))
    {
        if (lpBuffer->dwTotalPhys > MAXLONG) lpBuffer->dwTotalPhys = MAXLONG;
        if (lpBuffer->dwAvailPhys > MAXLONG) lpBuffer->dwAvailPhys = MAXLONG;
        if (lpBuffer->dwTotalVirtual > MAXLONG) lpBuffer->dwTotalVirtual = MAXLONG;
        if (lpBuffer->dwAvailVirtual > MAXLONG) lpBuffer->dwAvailVirtual = MAXLONG;
1360 1361 1362 1363 1364
    }

    /* work around for broken photoshop 4 installer */
    if ( lpBuffer->dwAvailPhys +  lpBuffer->dwAvailPageFile >= 2U*1024*1024*1024)
         lpBuffer->dwAvailPageFile = 2U*1024*1024*1024 -  lpBuffer->dwAvailPhys - 1;
1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377

    /* limit page file size for really old binaries */
    if (nt->OptionalHeader.MajorSubsystemVersion < 4)
    {
        if (lpBuffer->dwTotalPageFile > MAXLONG) lpBuffer->dwTotalPageFile = MAXLONG;
        if (lpBuffer->dwAvailPageFile > MAXLONG) lpBuffer->dwAvailPageFile = MAXLONG;
    }

    TRACE("Length %u, MemoryLoad %u, TotalPhys %lx, AvailPhys %lx,"
          " TotalPageFile %lx, AvailPageFile %lx, TotalVirtual %lx, AvailVirtual %lx\n",
          lpBuffer->dwLength, lpBuffer->dwMemoryLoad, lpBuffer->dwTotalPhys,
          lpBuffer->dwAvailPhys, lpBuffer->dwTotalPageFile, lpBuffer->dwAvailPageFile,
          lpBuffer->dwTotalVirtual, lpBuffer->dwAvailVirtual );
1378
}