source: trunk/src/kernel32/mmap.cpp@ 2072

Last change on this file since 2072 was 2072, checked in by sandervl, 26 years ago

memory map fixes
File size: 20.4 KB
Line 
1/* $Id: mmap.cpp,v 1.29 1999-12-14 12:50:45 sandervl Exp $ */
2
3/*
4 * Win32 Memory mapped file & view classes
5 *
6 * Copyright 1999 Sander van Leeuwen (sandervl@xs4all.nl)
7 *
8 * NOTE: Memory mapping DOES NOT work when kernel-mode code causes
9 * a pagefault in the memory mapped object. (exceptions aren't
10 * dispatched to our exception handler until after the kernel mode
11 * call returns (too late))
12 *
13 * NOTE: Are apps allowed to change the protection flags of memory mapped pages?
14 * I'm assuming they aren't for now.
15 *
16 * TODO: Handles returned should be usable by all apis that accept file handles
17 * TODO: Sharing memory mapped files between multiple processes
18 *
19 * Project Odin Software License can be found in LICENSE.TXT
20 *
21 */
22#include <os2win.h>
23#include <stdio.h>
24#include <stdlib.h>
25#include <string.h>
26#include <win\virtual.h>
27#include <vmutex.h>
28#include <handlemanager.h>
29#include "mmap.h"
30#include "oslibdos.h"
31#include <winimagepeldr.h>
32
33//Global DLL Data
34#pragma data_seg(_GLOBALDATA)
35Win32MemMap *Win32MemMap::memmaps = NULL;
36VMutex globalmapMutex(VMUTEX_SHARED);
37#pragma data_seg()
38VMutex globalviewMutex;
39Win32MemMapView *Win32MemMapView::mapviews = NULL;
40
41//******************************************************************************
42//TODO: sharing between processes
43//******************************************************************************
44Win32MemMap::Win32MemMap(HFILE hfile, ULONG size, ULONG fdwProtect, LPSTR lpszName)
45 : nrMappings(0), pMapping(NULL), mMapAccess(0), referenced(0), image(0)
46{
47 globalmapMutex.enter();
48 next = memmaps;
49 memmaps = this;
50 globalmapMutex.leave();
51
52 hMemFile = hfile;
53
54 mSize = size;
55 mProtFlags = fdwProtect;
56 mProcessId = GetCurrentProcess();
57
58 if(lpszName) {
59 lpszMapName = (char *)_smalloc(strlen(lpszName)+1);
60 strcpy(lpszMapName, lpszName);
61 }
62 else lpszMapName = NULL;
63}
64//******************************************************************************
65//Map constructor used for executable image maps (only used internally)
66//******************************************************************************
67Win32MemMap::Win32MemMap(Win32PeLdrImage *pImage, ULONG baseAddress, ULONG size)
68 : nrMappings(0), pMapping(NULL), mMapAccess(0), referenced(0)
69{
70 globalmapMutex.enter();
71 next = memmaps;
72 memmaps = this;
73 globalmapMutex.leave();
74
75 hMemFile = -1;
76
77 mSize = size;
78 mProtFlags = PAGE_READWRITE;
79 mProcessId = GetCurrentProcess();
80
81 pMapping = (LPVOID)baseAddress;
82
83 image = pImage;
84 lpszMapName= NULL;
85}
86//******************************************************************************
87//******************************************************************************
88BOOL Win32MemMap::Init(HANDLE hMemMap)
89{
90 mapMutex.enter();
91 if(hMemFile != -1)
92 {
93 if(DuplicateHandle(mProcessId, hMemFile, GetCurrentProcess(),
94 &hMemFile, 0, FALSE, DUPLICATE_SAME_ACCESS) == FALSE)
95 {
96 dprintf(("Win32MemMap::Init: DuplicateHandle failed!"));
97 goto fail;
98 }
99 mSize = SetFilePointer(hMemFile, 0, NULL, FILE_END);
100 if(mSize == -1) {
101 dprintf(("Win32MemMap::init: SetFilePointer failed to set pos end"));
102 goto fail;
103 }
104 //SvL: Temporary limitation of size (Warp Server Advanced doesn't allow
105 // one to reserve more than 450 MB of continuous memory; (Warp 4
106 // much less))
107 if(mSize > 64*1024*1024) {
108 mSize = 64*1024*1024;
109 }
110 }
111
112 dprintf(("CreateFileMappingA for file %x, prot %x size %d, name %s", hMemFile, mProtFlags, mSize, lpszMapName));
113 this->hMemMap = hMemMap;
114 mapMutex.leave();
115 return TRUE;
116fail:
117 mapMutex.leave();
118 return FALSE;
119}
120//******************************************************************************
121//******************************************************************************
122Win32MemMap::~Win32MemMap()
123{
124 Win32MemMapView::deleteViews(this); //delete all views of our memory mapped file
125
126 dprintf(("Win32MemMap dtor: deleting view %x %x", pMapping, mSize));
127
128 mapMutex.enter();
129 if(lpszMapName) {
130 free(lpszMapName);
131 }
132 if(pMapping && !image) {
133 if(lpszMapName) {
134 OSLibDosFreeMem(pMapping);
135 }
136 else VirtualFree(pMapping, mSize, MEM_RELEASE);
137
138 pMapping = NULL;
139 }
140 if(hMemFile != -1) {
141 CloseHandle(hMemFile);
142 hMemFile = -1;
143 }
144 mapMutex.leave();
145
146 globalmapMutex.enter();
147 Win32MemMap *map = memmaps;
148
149 if(map == this) {
150 memmaps = next;
151 }
152 else {
153 while(map->next) {
154 if(map->next == this)
155 break;
156 map = map->next;
157 }
158 if(map->next) {
159 map->next = next;
160 }
161 else dprintf(("Win32MemMap::~Win32MemMap: map not found!! (%x)", this));
162 }
163 globalmapMutex.leave();
164}
165//******************************************************************************
166//We determine whether a page has been modified by checking it's protection flags
167//If the write flag is set, this means commitPage had to enable this due to a pagefault
168//(all pages are readonly until the app tries to write to it)
169//******************************************************************************
170BOOL Win32MemMap::commitPage(ULONG offset, BOOL fWriteAccess, int nrpages)
171{
172 MEMORY_BASIC_INFORMATION memInfo;
173 LPVOID lpPageFaultAddr = (LPVOID)((ULONG)pMapping + offset);
174 DWORD pageAddr = (DWORD)lpPageFaultAddr & ~0xFFF;
175 DWORD oldProt, newProt, nrBytesRead, size;
176 int i;
177
178// mapMutex.enter();
179
180 if(image) {
181 return image->commitPage(pageAddr, fWriteAccess);
182 }
183 newProt = mProtFlags & (PAGE_READONLY | PAGE_READWRITE | PAGE_WRITECOPY);
184
185 dprintf(("Win32MemMap::commitPage %x (faultaddr %x)", pageAddr, lpPageFaultAddr));
186 if(hMemFile != -1) {
187// for(i=0;i<nrpages;i++) {
188 if(VirtualQuery((LPSTR)pageAddr, &memInfo, nrpages*PAGE_SIZE) == 0) {
189 dprintf(("Win32MemMap::commitPage: VirtualQuery (%x,%x) failed for %x", pageAddr, nrpages*PAGE_SIZE));
190 goto fail;
191 }
192 //Only changes the state of the pages with the same attribute flags
193 //(returned in memInfo.RegionSize)
194 //If it's smaller than the mNrPages, it simply means one or more of the
195 //other pages have already been committed
196 if(memInfo.State & MEM_COMMIT)
197 {//if it's already committed, then the app tried to write to it
198 if(!fWriteAccess) {
199 dprintf(("Win32MemMap::commitPage: Huh? Already committed and not trying to write (%x,%x) failed for %x", pageAddr, memInfo.RegionSize));
200 goto fail;
201 }
202 if(VirtualProtect((LPVOID)pageAddr, memInfo.RegionSize, newProt, &oldProt) == FALSE) {
203 dprintf(("Win32MemMap::commitPage: Failed to set write flag on page (%x,%x) failed for %x", pageAddr, memInfo.RegionSize));
204 goto fail;
205 }
206 }
207 else {
208 if(VirtualAlloc((LPVOID)pageAddr, memInfo.RegionSize, MEM_COMMIT, PAGE_READWRITE) == FALSE) {
209 goto fail;
210 }
211 offset = pageAddr - (ULONG)pMapping;
212 size = memInfo.RegionSize;
213 if(offset + size > mSize) {
214 dprintf(("Adjusting size from %d to %d", size, mSize - offset));
215 size = mSize - offset;
216 }
217 if(SetFilePointer(hMemFile, offset, NULL, FILE_BEGIN) != offset) {
218 dprintf(("Win32MemMap::commitPage: SetFilePointer failed to set pos to %x", offset));
219 goto fail;
220 }
221 if(ReadFile(hMemFile, (LPSTR)pageAddr, size, &nrBytesRead, NULL) == FALSE) {
222 dprintf(("Win32MemMap::commitPage: ReadFile failed for %x", pageAddr));
223 goto fail;
224 }
225 if(nrBytesRead != size) {
226 dprintf(("Win32MemMap::commitPage: ReadFile didn't read all bytes for %x", pageAddr));
227 goto fail;
228 }
229 if(mProtFlags != PAGE_READWRITE) {
230 if(VirtualProtect((LPVOID)pageAddr, memInfo.RegionSize, newProt, &oldProt) == FALSE) {
231 goto fail;
232 }
233 }
234 }
235// pageAddr += PAGE_SIZE;
236// }
237 }
238 else {
239 ULONG sizeleft = nrpages*PAGE_SIZE;
240 while(sizeleft) {
241 if(VirtualQuery((LPSTR)pageAddr, &memInfo, sizeleft) == 0) {
242 dprintf(("Win32MemMap::commitPage: VirtualQuery (%x,%x) failed", pageAddr, sizeleft));
243 goto fail;
244 }
245 if(!(memInfo.State & MEM_COMMIT))
246 {//if it's already committed, then the app tried to write to it
247 if(VirtualAlloc((LPVOID)pageAddr, memInfo.RegionSize, MEM_COMMIT, newProt) == FALSE)
248 goto fail;
249 }
250 memInfo.RegionSize = (memInfo.RegionSize+PAGE_SIZE-1) & ~0xfff;
251 pageAddr += memInfo.RegionSize;
252 sizeleft -= memInfo.RegionSize;
253 }
254 }
255
256// mapMutex.leave();
257 return TRUE;
258fail:
259// mapMutex.leave();
260 return FALSE;
261}
262//******************************************************************************
263//******************************************************************************
264BOOL Win32MemMap::unmapViewOfFile(Win32MemMapView *view)
265{
266 mapMutex.enter();
267
268 if(nrMappings == 0)
269 goto fail;
270
271 delete view;
272
273 if(--nrMappings) {
274 VirtualFree(pMapping, mSize, MEM_RELEASE);
275 pMapping = NULL;
276 }
277 mapMutex.leave();
278 return TRUE;
279fail:
280 mapMutex.leave();
281 return FALSE;
282}
283//******************************************************************************
284//******************************************************************************
285LPVOID Win32MemMap::mapViewOfFile(ULONG size, ULONG offset, ULONG fdwAccess)
286{
287 DWORD processId = GetCurrentProcess();
288
289 mapMutex.enter();
290 ULONG memFlags = (mProtFlags & (PAGE_READONLY | PAGE_READWRITE | PAGE_WRITECOPY));
291 ULONG fAlloc = 0;
292 Win32MemMapView *mapview;
293
294 //@@@PH: if(fdwAccess & ~(FILE_MAP_WRITE|FILE_MAP_READ|FILE_MAP_COPY))
295 // Docs say FILE_MAP_ALL_ACCESS is same as FILE_MAP_WRITE. Doesn't match reality though.
296 if(fdwAccess & ~FILE_MAP_ALL_ACCESS)
297 goto parmfail;
298 if((fdwAccess & FILE_MAP_WRITE) && !(mProtFlags & PAGE_READWRITE))
299 goto parmfail;
300 if((fdwAccess & FILE_MAP_READ) && !(mProtFlags & (PAGE_READWRITE|PAGE_READONLY)))
301 goto parmfail;
302
303 //@@@PH
304 if (fdwAccess != FILE_MAP_ALL_ACCESS)
305 if((fdwAccess & FILE_MAP_COPY) && !(mProtFlags & PAGE_WRITECOPY))
306 goto parmfail;
307
308 if(offset+size > mSize)
309 goto parmfail;
310
311//TODO: If committed, read file into memory
312#if 0
313 if(mProtFlags & SEC_COMMIT)
314 fAlloc |= MEM_COMMIT;
315 else
316 if(mProtFlags & SEC_RESERVE)
317 fAlloc |= MEM_RESERVE;
318#else
319 fAlloc = MEM_RESERVE;
320#endif
321
322 //Memory has already been allocated for executable image maps (only used internally)
323 if(!pMapping && nrMappings == 0) {//if not mapped, reserve/commit entire view
324 //SvL: Always read/write access or else ReadFile will crash once we
325 // start committing pages.
326 // This is most likely an OS/2 bug and doesn't happen in Aurora
327 // when allocating memory with the PAG_ANY bit set. (without this
328 // flag it will also crash)
329 if(lpszMapName) {
330 pMapping = VirtualAllocShared(mSize, fAlloc, PAGE_READWRITE, lpszMapName);
331 }
332 else {
333 pMapping = VirtualAlloc(0, mSize, fAlloc, PAGE_READWRITE);
334 }
335 if(pMapping == NULL) {
336 dprintf(("Win32MemMap::mapFileView: VirtualAlloc %x %x %x failed!", mSize, fAlloc, memFlags));
337 goto fail;
338 }
339 if(hMemFile == -1 && !image && (mProtFlags & SEC_COMMIT)) {//commit memory
340 VirtualAlloc(pMapping, mSize, MEM_COMMIT, PAGE_READWRITE);
341 }
342 }
343 mapview = new Win32MemMapView(this, offset, (size == 0) ? mSize : size, fdwAccess);
344 if(mapview == NULL) {
345 goto fail;
346 }
347 if(mapview->everythingOk() == FALSE) {
348 dprintf(("Win32MemMap::mapFileView: !mapview->everythingOk"));
349 delete mapview;
350 goto fail;
351 }
352 nrMappings++;
353 mapMutex.leave();
354 return mapview->getViewAddr();
355
356parmfail:
357 dprintf(("Win32MemMap::mapFileView: ERROR_INVALID_PARAMETER"));
358 SetLastError(ERROR_INVALID_PARAMETER);
359fail:
360 mapMutex.leave();
361 return 0;
362}
363//******************************************************************************
364//We determine whether a page has been modified by checking it's protection flags
365//If the write flag is set, this means commitPage had to enable this due to a pagefault
366//(all pages are readonly until the app tries to modify the contents of the page)
367//
368//TODO: Are apps allowed to change the protection flags of memory mapped pages?
369// I'm assuming they aren't for now.
370//******************************************************************************
371BOOL Win32MemMap::flushView(ULONG offset, ULONG cbFlush)
372{
373 LPVOID lpvBase = (LPVOID)((ULONG)pMapping+offset);
374 MEMORY_BASIC_INFORMATION memInfo;
375 ULONG nrBytesWritten, size;
376 int i;
377
378 if(image) //no flushing for image maps
379 return TRUE;
380
381 dprintf(("Win32MemMap::flushView: %x %x", lpvBase, cbFlush));
382 if(nrMappings == 0)
383 goto parmfail;
384
385 if(cbFlush == 0)
386 cbFlush = mSize;
387
388 if(lpvBase < pMapping || (ULONG)lpvBase+cbFlush > (ULONG)pMapping+mSize)
389 goto parmfail;
390
391 if(mProtFlags & PAGE_READONLY)
392 goto parmfail;
393
394 if(hMemFile == -1)
395 goto success; //TODO: Return an error here?
396
397 while(cbFlush) {
398 if(VirtualQuery((LPSTR)lpvBase, &memInfo, cbFlush) == 0) {
399 dprintf(("Win32MemMap::flushView: VirtualQuery (%x,%x) failed for %x", lpvBase, cbFlush, (ULONG)lpvBase+i*PAGE_SIZE));
400 goto fail;
401 }
402 //If a page (or range of pages) is reserved or write protected, we
403 //won't bother flushing it to disk
404 if(memInfo.State & MEM_COMMIT &&
405 memInfo.AllocationProtect & (PAGE_READWRITE|PAGE_WRITECOPY|PAGE_EXECUTE_READWRITE|PAGE_EXECUTE_WRITECOPY))
406 {//committed and allowed for writing?
407 offset = (ULONG)lpvBase - (ULONG)pMapping;
408 size = memInfo.RegionSize;
409 if(size > cbFlush) {
410 size = cbFlush;
411 }
412 dprintf(("Win32MemMap::flushView for offset %x, size %d", offset, size));
413
414 if(SetFilePointer(hMemFile, offset, NULL, FILE_BEGIN) != offset) {
415 dprintf(("Win32MemMap::flushView: SetFilePointer failed to set pos to %x", offset));
416 goto fail;
417 }
418 if(WriteFile(hMemFile, (LPSTR)lpvBase, size, &nrBytesWritten, NULL) == FALSE) {
419 dprintf(("Win32MemMap::flushView: WriteFile failed for %x", (ULONG)lpvBase));
420 goto fail;
421 }
422 if(nrBytesWritten != size) {
423 dprintf(("Win32MemMap::flushView: WriteFile didn't write all bytes for %x", (ULONG)lpvBase));
424 goto fail;
425 }
426 }
427 lpvBase = (LPVOID)((ULONG)lpvBase + memInfo.RegionSize);
428
429 if(cbFlush < memInfo.RegionSize)
430 break;
431
432 cbFlush -= memInfo.RegionSize;
433 }
434success:
435 return TRUE;
436parmfail:
437 SetLastError(ERROR_INVALID_PARAMETER);
438 return FALSE;
439fail:
440 return FALSE;
441}
442//******************************************************************************
443//******************************************************************************
444Win32MemMap *Win32MemMap::findMap(LPSTR lpszName)
445{
446 if(lpszName == NULL)
447 return NULL;
448
449 globalmapMutex.enter();
450 Win32MemMap *map = memmaps;
451
452 if(map != NULL) {
453 while(map) {
454 if(map->lpszMapName && !strcmp(map->lpszMapName, lpszName))
455 break;
456 map = map->next;
457 }
458 }
459 globalmapMutex.leave();
460 if(!map) dprintf(("Win32MemMap::findMap: couldn't find map %s", lpszName));
461 return map;
462}
463//******************************************************************************
464//******************************************************************************
465Win32MemMap *Win32MemMap::findMap(ULONG address)
466{
467 globalmapMutex.enter();
468 Win32MemMap *map = memmaps;
469
470 if(map != NULL) {
471 while(map) {
472 if(map->pMapping && (ULONG)map->pMapping <= address &&
473 (ULONG)map->pMapping + map->mSize > address)
474 {
475 break;
476 }
477 map = map->next;
478 }
479 }
480 globalmapMutex.leave();
481 return map;
482}
483//******************************************************************************
484//Assumes mutex has been acquired
485//******************************************************************************
486void Win32MemMap::deleteAll()
487{
488 Win32MemMap *map = memmaps, *nextmap;
489 DWORD processId = GetCurrentProcess();
490
491 //delete all maps created by this process
492 while(map) {
493 nextmap = map->next;
494 if(map->getProcessId() == processId) {
495 //Delete map directly for executable images (only used internally)
496 if(map->getImage()) {
497 delete map;
498 }
499 else CloseHandle(memmaps->hMemMap);
500 }
501 else {
502 //delete all views created by this process for this map
503 Win32MemMapView::deleteViews(map);
504 }
505 map = nextmap;
506 }
507}
508//******************************************************************************
509//******************************************************************************
510Win32MemMapView::Win32MemMapView(Win32MemMap *map, ULONG offset, ULONG size,
511 ULONG fdwAccess)
512{
513 LPVOID viewaddr = (LPVOID)((ULONG)map->getMappingAddr()+offset);
514 ULONG accessAttr = 0;
515 Win32MemMapView *tmpview = mapviews;
516
517 errorState = 0;
518 mParentMap = map;
519 mSize = size;
520 mOffset = offset;
521 mProcessId = GetCurrentProcess();
522
523 switch(fdwAccess) {
524 case FILE_MAP_READ:
525 accessAttr = PAG_READ;
526 mfAccess = MEMMAP_ACCESS_READ;
527 break;
528 case FILE_MAP_ALL_ACCESS:
529 case FILE_MAP_WRITE:
530 case FILE_MAP_COPY:
531 accessAttr = (PAG_READ|PAG_WRITE);
532 mfAccess = MEMMAP_ACCESS_READ | MEMMAP_ACCESS_WRITE;
533 break;
534 }
535 if(map->getMemName() != NULL) {
536 //shared memory map, so map it into our address space
537 if(OSLibDosGetNamedSharedMem((LPVOID *)&viewaddr, map->getMemName()) != OSLIB_NOERROR) {
538 dprintf(("new OSLibDosGetNamedSharedMem FAILED"));
539 SetLastError(ERROR_NOT_ENOUGH_MEMORY);
540 errorState = 1;
541 return;
542 }
543 }
544
545 //view == memory mapping for executable images (only used internally)
546 if(map->getImage()) {
547 pMapView = map->getMappingAddr();
548 }
549 else {
550 if(OSLibDosAliasMem(viewaddr, size, &pMapView, accessAttr) != OSLIB_NOERROR) {
551 dprintf(("new OSLibDosAliasMem FAILED"));
552 SetLastError(ERROR_NOT_ENOUGH_MEMORY);
553 errorState = 1;
554 return;
555 }
556 }
557
558 dprintf(("Win32MemMapView::Win32MemMapView: created %x (alias for %x), size %d", pMapView, viewaddr, size));
559
560 globalviewMutex.enter();
561 if(tmpview == NULL || tmpview->getViewAddr() > pMapView) {
562 next = mapviews;
563 mapviews = this;
564 }
565 else {
566 while(tmpview->next) {
567 if(tmpview->next->getViewAddr() > pMapView) {
568 break;
569 }
570 tmpview = tmpview->next;
571 }
572 next = tmpview->next;
573 tmpview->next = this;
574 }
575 globalviewMutex.leave();
576}
577//******************************************************************************
578//******************************************************************************
579Win32MemMapView::~Win32MemMapView()
580{
581 if(errorState != 0)
582 return;
583
584 dprintf(("Win32MemMapView dtor: deleting view %x %x", mOffset, mSize));
585
586 if(mfAccess & MEMMAP_ACCESS_WRITE)
587 mParentMap->flushView(mOffset, mSize);
588
589 //Don't free memory for executable image map views (only used internally)
590 if(!mParentMap->getImage())
591 OSLibDosFreeMem(pMapView);
592
593 globalviewMutex.enter();
594 Win32MemMapView *view = mapviews;
595
596 if(view == this) {
597 mapviews = next;
598 }
599 else {
600 while(view->next) {
601 if(view->next == this)
602 break;
603 view = view->next;
604 }
605 if(view->next) {
606 view->next = next;
607 }
608 else dprintf(("Win32MemMapView::~Win32MemMapView: map not found!! (%x)", this));
609 }
610 globalviewMutex.leave();
611}
612//******************************************************************************
613//******************************************************************************
614void Win32MemMapView::deleteViews(Win32MemMap *map)
615{
616 globalviewMutex.enter();
617 Win32MemMapView *view = mapviews, *nextview;
618
619 if(view != NULL) {
620 while(view) {
621 nextview = view->next;
622 if(view->getParentMap() == map)
623 {
624 globalviewMutex.leave();
625 delete view;
626 globalviewMutex.enter();
627 }
628 view = nextview;
629 }
630 }
631 globalviewMutex.leave();
632}
633//******************************************************************************
634//******************************************************************************
635Win32MemMap *Win32MemMapView::findMapByView(ULONG address, ULONG *offset,
636 ULONG accessType,
637 Win32MemMapView **pView)
638{
639 globalviewMutex.enter();
640 Win32MemMapView *view = mapviews;
641
642 *offset = 0;
643
644 if(view != NULL) {
645 while(view && (ULONG)view->getViewAddr() <= address) {
646 if((ULONG)view->getViewAddr() <= address &&
647 (ULONG)view->getViewAddr() + view->getSize() > address &&
648 view->getAccessFlags() >= accessType)
649 {
650 *offset = view->getOffset() + (address - (ULONG)view->getViewAddr());
651 goto success;
652 }
653 view = view->next;
654 }
655 //failure if we get here
656 view = NULL;
657 }
658success:
659 if(view && !view->getParentMap()->isImageMap())
660 dprintf(("findMapByView %x %x -> %x off %x", address, accessType, view->getViewAddr(), *offset));
661
662 globalviewMutex.leave();
663 if(pView) *pView = view;
664 return (view) ? view->getParentMap() : NULL;
665}
666//******************************************************************************
667//******************************************************************************
668Win32MemMapView *Win32MemMapView::findView(LPVOID address)
669{
670 Win32MemMapView *view = mapviews;
671
672 if(view != NULL) {
673 while(view) {
674 if(view->getViewAddr() == address)
675 {
676 break;
677 }
678 view = view->next;
679 }
680 }
681 return view;
682}
683//******************************************************************************
684//******************************************************************************
685
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