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