2 * reactos Cache Manager (Cc*) SharedCacheMap structure of libcaptive
3 * Copyright (C) 2003 Jan Kratochvil <project-captive@jankratochvil.net>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; exactly version 2 of June 1991 is required
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #include "sharedcachemap.h" /* self */
23 #include "sharedcachemap-priv.h" /* self */
25 #include "marshallers.h"
26 #include <glib-object.h>
27 #include "privatebcbpin.h"
28 #include "captive/macros.h"
30 #include "reactos/ddk/obfuncs.h"
34 static GHashTable *CaptiveSharedCacheMapObject_hash;
36 static void CaptiveSharedCacheMapObject_hash_init(void)
38 if (CaptiveSharedCacheMapObject_hash)
40 CaptiveSharedCacheMapObject_hash=g_hash_table_new(
41 g_direct_hash, /* hash_func */
42 g_direct_equal); /* key_equal_func */
46 static gpointer captive_shared_cache_map_object_parent_class=NULL;
49 static void captive_shared_cache_map_object_finalize(CaptiveSharedCacheMapObject *captive_shared_cache_map_object)
51 static const CC_FILE_SIZES FileSizes_zero;
54 CaptiveSharedCacheMapObject_page *page;
56 g_return_if_fail(captive_shared_cache_map_object!=NULL);
58 for (offset=0;offset<CAPTIVE_ROUND_UP64(captive_shared_cache_map_object->AllocationSize,PAGE_SIZE);offset+=PAGE_SIZE) {
59 page=captive_shared_cache_map_object->pages+offset/PAGE_SIZE;
60 if (!page->data_valid)
62 g_assert(!page->dirty); /* FIXME: Is it allowed by W32? */
65 CaptiveSharedCacheMapObject_hash_init();
66 errbool=g_hash_table_remove(CaptiveSharedCacheMapObject_hash,captive_shared_cache_map_object);
67 g_assert(errbool==TRUE);
69 captive_shared_cache_map_FileSizes_set(captive_shared_cache_map_object,&FileSizes_zero);
70 g_assert(captive_shared_cache_map_object->buffer==NULL);
71 g_assert(captive_shared_cache_map_object->pages==NULL);
73 if (captive_shared_cache_map_object->pin_hash) {
74 captive_private_bcb_pin_object_hash_destroy(captive_shared_cache_map_object->pin_hash);
75 captive_shared_cache_map_object->pin_hash=NULL;
77 g_assert(captive_shared_cache_map_object->map==NULL);
78 if (captive_shared_cache_map_object->SectionObjectPointer) {
79 g_assert(captive_shared_cache_map_object==captive_shared_cache_map_object->SectionObjectPointer->SharedCacheMap);
80 captive_shared_cache_map_object->SectionObjectPointer->SharedCacheMap=NULL;
83 if (captive_shared_cache_map_object->FileObject) {
84 /* W32 dereferences twice. */
85 ObDereferenceObject(captive_shared_cache_map_object->FileObject);
86 captive_shared_cache_map_object->FileObject=NULL;
89 G_OBJECT_CLASS(captive_shared_cache_map_object_parent_class)->finalize((GObject *)captive_shared_cache_map_object);
92 static guint FileSizes_changed_signal;
93 static guint purge_signal;
95 static void captive_shared_cache_map_object_FileSizes_changed(CaptiveSharedCacheMapObject *captive_shared_cache_map_object,
96 guint64 AllocationSize,guint64 FileSize,guint64 ValidDataLength);
97 static void captive_shared_cache_map_object_purge(CaptiveSharedCacheMapObject *captive_shared_cache_map_object);
99 static void captive_shared_cache_map_object_class_init(CaptiveSharedCacheMapObjectClass *class)
101 GObjectClass *gobject_class=G_OBJECT_CLASS(class);
103 captive_shared_cache_map_object_parent_class=g_type_class_ref(g_type_parent(G_TYPE_FROM_CLASS(class)));
104 gobject_class->finalize=(void (*)(GObject *object))captive_shared_cache_map_object_finalize;
106 class->FileSizes_changed=captive_shared_cache_map_object_FileSizes_changed;
107 class->purge=captive_shared_cache_map_object_purge;
109 FileSizes_changed_signal=g_signal_new("FileSizes_changed",
110 G_TYPE_FROM_CLASS(gobject_class),
112 G_STRUCT_OFFSET(CaptiveSharedCacheMapObjectClass,FileSizes_changed),
114 captive_cc_VOID__UINT64_UINT64_UINT64,
115 G_TYPE_NONE,3,G_TYPE_UINT64,G_TYPE_UINT64,G_TYPE_UINT64);
116 purge_signal=g_signal_new("purge",
117 G_TYPE_FROM_CLASS(gobject_class),
119 G_STRUCT_OFFSET(CaptiveSharedCacheMapObjectClass,purge),
121 captive_cc_VOID__VOID,
126 static void captive_shared_cache_map_object_init(CaptiveSharedCacheMapObject *captive_shared_cache_map_object)
128 captive_shared_cache_map_object->pin_hash=captive_private_bcb_pin_object_hash_new();
130 captive_shared_cache_map_w32_ref(captive_shared_cache_map_object);
131 g_object_unref(captive_shared_cache_map_object); /* ==sink */
133 CaptiveSharedCacheMapObject_hash_init();
134 g_hash_table_insert(CaptiveSharedCacheMapObject_hash,
135 captive_shared_cache_map_object,captive_shared_cache_map_object);
139 GType captive_shared_cache_map_object_get_type(void)
141 static GType captive_shared_cache_map_object_type=0;
143 if (!captive_shared_cache_map_object_type) {
144 static const GTypeInfo captive_shared_cache_map_object_info={
145 sizeof(CaptiveSharedCacheMapObjectClass),
146 NULL, /* base_init */
147 NULL, /* base_finalize */
148 (GClassInitFunc)captive_shared_cache_map_object_class_init,
149 NULL, /* class_finalize */
150 NULL, /* class_data */
151 sizeof(CaptiveSharedCacheMapObject),
153 (GInstanceInitFunc)captive_shared_cache_map_object_init,
156 captive_shared_cache_map_object_type=g_type_register_static(G_TYPE_OBJECT,
157 "CaptiveSharedCacheMapObject",&captive_shared_cache_map_object_info,0);
160 return captive_shared_cache_map_object_type;
163 static void captive_shared_cache_map_object_FileSizes_changed(CaptiveSharedCacheMapObject *captive_shared_cache_map_object,
164 guint64 AllocationSize,guint64 FileSize,guint64 ValidDataLength)
166 size_t size_old,size_new;
167 guint64 size64_old,size64_new;
169 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
171 g_assert((!captive_shared_cache_map_object->buffer)==(!captive_shared_cache_map_object->AllocationSize));
172 g_assert((!captive_shared_cache_map_object->pages)==(!captive_shared_cache_map_object->AllocationSize));
174 size64_old=CAPTIVE_ROUND_UP64(captive_shared_cache_map_object->AllocationSize,PAGE_SIZE);
176 g_assert(size_old==size64_old);
177 size64_new=CAPTIVE_ROUND_UP64(AllocationSize,PAGE_SIZE);
179 if (size_new!=size64_new) {
181 g_error("Mapped size %" G_GUINT64_FORMAT " is too big; FIXME: non-mmap(2)-able areas not yet supported",size64_new);
182 g_assert_not_reached();
185 if (size_old!=size_new) {
186 /* ntfs.sys of NT-5.1sp1 may extend StreamFileObject while dirty pins exist.
187 * How to extend SharedCacheMap size without changing the memory location?
188 * I hope ntfs.sys does not expect long-term absolute position of its
191 if (!(captive_shared_cache_map_object->FileObject->Flags&FO_STREAM_FILE)) {
192 /* These two assertions should be already catched by pin/map signal handlers. */
193 g_assert(!captive_shared_cache_map_object->map);
194 g_assert(!g_hash_table_size(captive_shared_cache_map_object->pin_hash));
198 if (!size_new || size_new > captive_shared_cache_map_object->alloc_length) {
203 alloc64_new=CAPTIVE_ROUND_UP64((!size64_new ? 0 : MAX(size64_new*2,0x10000)),PAGE_SIZE);
204 alloc_new=alloc64_new;
205 if (alloc_new!=alloc64_new)
216 PAGE_SIZE+alloc_new+PAGE_SIZE, /* length; leading and trailing boundary check pages */
217 PROT_READ|PROT_WRITE, /* prot; read/write must be possible although write is not guaranteed to be flushed yet */
218 MAP_PRIVATE|MAP_ANONYMOUS /* flags */
219 |MAP_NORESERVE, /* At least ext2fsd maps the whole disk. */
220 -1, /* fd; ignored due to MAP_ANONYMOUS */
221 0); /* offset; ignored due to MAP_ANONYMOUS */
222 if (base==MAP_FAILED)
224 g_assert(base!=NULL);
227 errint=munmap(base-PAGE_SIZE,PAGE_SIZE); /* unmap leading boundary check page */
229 errint=munmap(base+alloc_new,PAGE_SIZE); /* unmap trailing boundary check page */
235 memcpy(buffer_new,captive_shared_cache_map_object->buffer,
236 MIN(AllocationSize,captive_shared_cache_map_object->AllocationSize));
238 if (captive_shared_cache_map_object->alloc_length) {
241 errint=munmap(captive_shared_cache_map_object->buffer,captive_shared_cache_map_object->alloc_length);
245 captive_shared_cache_map_object->buffer=buffer_new;
247 #if 0 /* It appears it is valid to squeeze out 'dirty' blocks. FIXME: Flush them? */
248 /* FIXME: The code may be no longer valid with the 'alloc_new' introduction! */
249 if (size_old>size_new) {
252 for (now=size_new;now<size_old;now+=PAGE_SIZE) {
253 if (!captive_shared_cache_map_object->pages[now/PAGE_SIZE].data_valid)
255 g_assert(!captive_shared_cache_map_object->pages[now/PAGE_SIZE].dirty);
260 captive_shared_cache_map_object->pages=g_realloc(captive_shared_cache_map_object->pages,
261 alloc_new/PAGE_SIZE*sizeof(*captive_shared_cache_map_object->pages));
263 captive_shared_cache_map_object->alloc_length=alloc_new;
266 if (size_new>size_old) /* prevent 'size_new-size_old' as it is unsigned! */
267 memset(captive_shared_cache_map_object->pages+(size_old/PAGE_SIZE),0,
268 (size_new-size_old)/PAGE_SIZE*sizeof(*captive_shared_cache_map_object->pages));
270 captive_shared_cache_map_object->AllocationSize=AllocationSize;
271 captive_shared_cache_map_object->FileSize=FileSize;
272 captive_shared_cache_map_object->ValidDataLength=ValidDataLength;
274 g_assert((!captive_shared_cache_map_object->buffer)==(!captive_shared_cache_map_object->AllocationSize));
275 g_assert((!captive_shared_cache_map_object->pages)==(!captive_shared_cache_map_object->AllocationSize));
278 static void captive_shared_cache_map_object_purge(CaptiveSharedCacheMapObject *captive_shared_cache_map_object)
280 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
282 /* NOP; just to provide slot for checking by Bcbs */
285 CaptiveSharedCacheMapObject *captive_shared_cache_map_get_ref(FILE_OBJECT *FileObject,
286 const CC_FILE_SIZES *FileSizes,BOOLEAN PinAccess,const CACHE_MANAGER_CALLBACKS *CallBacks,VOID *LazyWriterContext)
288 CaptiveSharedCacheMapObject *captive_shared_cache_map_object;
290 g_return_val_if_fail(FileObject!=NULL,NULL);
291 g_return_val_if_fail(FileObject->SectionObjectPointer!=NULL,NULL);
292 g_return_val_if_fail(FileSizes!=NULL,NULL);
293 g_return_val_if_fail(CallBacks!=NULL,NULL);
295 if ((captive_shared_cache_map_object=FileObject->SectionObjectPointer->SharedCacheMap)) {
296 captive_shared_cache_map_w32_ref(captive_shared_cache_map_object);
299 captive_shared_cache_map_object=g_object_new(
300 CAPTIVE_SHARED_CACHE_MAP_TYPE_OBJECT, /* object_type */
301 NULL); /* first_property_name; FIXME: support properties */
303 /* FIXME: When to drop SharedCacheMap?
304 * Currently we never close it.
305 * Fix also CcZeroData() workaround.
307 g_object_ref(captive_shared_cache_map_object);
309 /* W32 references twice. */
310 ObReferenceObject(FileObject);
311 captive_shared_cache_map_object->FileObject=FileObject;
312 captive_shared_cache_map_object->SectionObjectPointer=FileObject->SectionObjectPointer;
313 captive_shared_cache_map_object->AllocationSize=0;
314 captive_shared_cache_map_object->FileSize=0;
315 captive_shared_cache_map_object->ValidDataLength=0;
316 captive_shared_cache_map_object->PinAccess=PinAccess;
317 captive_shared_cache_map_object->CallBacks=*CallBacks;
318 captive_shared_cache_map_object->LazyWriterContext=LazyWriterContext;
320 FileObject->SectionObjectPointer->SharedCacheMap=captive_shared_cache_map_object;
323 g_assert(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
324 /* FileObject may differ - we can have a different reference to the same FCB. */
325 g_assert(FileObject->SectionObjectPointer==captive_shared_cache_map_object->SectionObjectPointer);
326 g_assert(PinAccess==captive_shared_cache_map_object->PinAccess);
327 g_assert(CallBacks->AcquireForLazyWrite==captive_shared_cache_map_object->CallBacks.AcquireForLazyWrite);
328 g_assert(CallBacks->ReleaseFromLazyWrite==captive_shared_cache_map_object->CallBacks.ReleaseFromLazyWrite);
329 g_assert(CallBacks->AcquireForReadAhead==captive_shared_cache_map_object->CallBacks.AcquireForReadAhead);
330 g_assert(CallBacks->ReleaseFromReadAhead==captive_shared_cache_map_object->CallBacks.ReleaseFromReadAhead);
331 g_assert(LazyWriterContext==captive_shared_cache_map_object->LazyWriterContext);
333 captive_shared_cache_map_FileSizes_set(captive_shared_cache_map_object,FileSizes);
335 return captive_shared_cache_map_object;
338 void captive_shared_cache_map_FileSizes_set(CaptiveSharedCacheMapObject *captive_shared_cache_map_object,
339 const CC_FILE_SIZES *FileSizes)
341 guint64 AllocationSize,FileSize,ValidDataLength;
343 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
344 g_return_if_fail(FileSizes!=NULL);
346 AllocationSize=FileSizes->AllocationSize.QuadPart;
347 FileSize=FileSizes->FileSize.QuadPart;
348 ValidDataLength=FileSizes->ValidDataLength.QuadPart;
350 /* Do not: if (ValidDataLength==G_MAXINT64)
351 * ValidDataLength=FileSize;
352 * In some cases (during NTFS mount) there may be also invalid 'ValidDataLength' at all:
353 * CcSetFileSizes(AllocationSize=0x1000000,FileSize=0xf80208,ValidDataLength=0x23b801a0)
355 ValidDataLength=FileSize;
357 g_assert(AllocationSize>=0);
358 g_assert(FileSize>=0);
359 g_assert(ValidDataLength>=0);
361 g_assert(ValidDataLength<=FileSize);
362 /* Do not: g_assert(0==(AllocationSize%0x200));
363 * as it is true for ntfs.sys of NT-5.1sp1 but it fails for fastfat.sys of NT-5.1sp1.
365 /* AllocationSize can be much higher: */
366 g_assert(FileSize<=AllocationSize);
368 /* Prevent signalling if not needed. */
370 || captive_shared_cache_map_object->AllocationSize!=AllocationSize
371 || captive_shared_cache_map_object->FileSize!=FileSize
372 || captive_shared_cache_map_object->ValidDataLength!=ValidDataLength) {
373 /* Signalling is forbidden in captive_shared_cache_map_object_finalize(). */
374 if (G_OBJECT(captive_shared_cache_map_object)->ref_count==0) {
375 (*CAPTIVE_SHARED_CACHE_MAP_OBJECT_GET_CLASS(captive_shared_cache_map_object)->FileSizes_changed)
376 (captive_shared_cache_map_object,AllocationSize,FileSize,ValidDataLength);
379 g_signal_emit(captive_shared_cache_map_object,FileSizes_changed_signal,0,
380 AllocationSize,FileSize,ValidDataLength);
384 g_assert(captive_shared_cache_map_object->AllocationSize==AllocationSize);
385 g_assert(captive_shared_cache_map_object->FileSize==FileSize);
386 g_assert(captive_shared_cache_map_object->ValidDataLength==ValidDataLength);
389 CaptiveSharedCacheMapObject *captive_SectionObjectPointers_to_SharedCacheMap(SECTION_OBJECT_POINTERS *SectionObjectPointers)
391 g_return_val_if_fail(SectionObjectPointers!=NULL,NULL);
392 g_return_val_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(SectionObjectPointers->SharedCacheMap),NULL);
394 return SectionObjectPointers->SharedCacheMap;
397 CaptiveSharedCacheMapObject *captive_FileObject_to_SharedCacheMap(FILE_OBJECT *FileObject)
399 g_return_val_if_fail(FileObject!=NULL,NULL);
401 return captive_SectionObjectPointers_to_SharedCacheMap(FileObject->SectionObjectPointer);
404 void captive_shared_cache_map_w32_ref(CaptiveSharedCacheMapObject *captive_shared_cache_map_object)
406 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
408 g_object_ref(captive_shared_cache_map_object);
409 captive_shared_cache_map_object->w32_ref_count++;
412 void captive_shared_cache_map_w32_unref(CaptiveSharedCacheMapObject *captive_shared_cache_map_object)
414 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
415 g_return_if_fail(G_OBJECT(captive_shared_cache_map_object)->ref_count>0);
417 captive_shared_cache_map_object->w32_ref_count--;
418 g_object_unref(captive_shared_cache_map_object);
421 gint captive_shared_cache_map_query_w32_ref(CaptiveSharedCacheMapObject *captive_shared_cache_map_object)
423 g_return_val_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object),0);
425 return captive_shared_cache_map_object->w32_ref_count;
428 void captive_shared_cache_map_data_validate_read(CaptiveSharedCacheMapObject *captive_shared_cache_map_object,
429 FILE_OBJECT *FileObject,guint64 start,guint64 end)
432 gboolean after_eof=FALSE; /* Did we reached the end of file already? */
434 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
435 g_return_if_fail(captive_shared_cache_map_object==captive_FileObject_to_SharedCacheMap(FileObject));
436 g_return_if_fail(start<=end);
437 g_return_if_fail(end<=CAPTIVE_ROUND_UP64(captive_shared_cache_map_object->AllocationSize,PAGE_SIZE));
439 start=CAPTIVE_ROUND_DOWN64(start,PAGE_SIZE);
440 end=CAPTIVE_ROUND_UP64(end,PAGE_SIZE);
442 for (now=start;now<end;now+=PAGE_SIZE) {
443 LARGE_INTEGER now_LargeInteger;
446 if (captive_shared_cache_map_object->pages[now/PAGE_SIZE].data_valid)
448 now_LargeInteger.QuadPart=now;
449 got=captive_Cc_IoPageRead(FileObject,captive_shared_cache_map_object->buffer+now,PAGE_SIZE,&now_LargeInteger);
453 g_assert(got<=PAGE_SIZE);
454 after_eof=(got<PAGE_SIZE);
455 captive_shared_cache_map_object->pages[now/PAGE_SIZE].data_valid=TRUE;
456 captive_shared_cache_map_object->pages[now/PAGE_SIZE].dirty=FALSE;
460 void captive_shared_cache_map_data_validate_noread(CaptiveSharedCacheMapObject *captive_shared_cache_map_object,
461 guint64 start,guint64 end)
465 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
466 g_return_if_fail(start<=end);
467 g_return_if_fail(end<=CAPTIVE_ROUND_UP64(captive_shared_cache_map_object->AllocationSize,PAGE_SIZE));
469 start=CAPTIVE_ROUND_DOWN64(start,PAGE_SIZE);
470 end=CAPTIVE_ROUND_UP64(end,PAGE_SIZE);
472 for (now=start;now<end;now+=PAGE_SIZE) {
473 g_assert(captive_shared_cache_map_object->pages[now/PAGE_SIZE].data_valid);
477 void captive_shared_cache_map_set_data_valid(CaptiveSharedCacheMapObject *captive_shared_cache_map_object,
478 guint64 start,guint64 end)
482 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
483 g_return_if_fail(start<=end);
484 g_return_if_fail(end<=CAPTIVE_ROUND_UP64(captive_shared_cache_map_object->AllocationSize,PAGE_SIZE));
486 start=CAPTIVE_ROUND_UP64(start,PAGE_SIZE);
487 if (end<captive_shared_cache_map_object->FileSize)
488 end=CAPTIVE_ROUND_DOWN64(end,PAGE_SIZE);
490 /* We can validate the last page of the file
491 * even if it does not end on PAGE_SIZE boundary.
493 end=CAPTIVE_ROUND_UP64(end,PAGE_SIZE);
495 /* We may get end<start here - it is valid to not to validate anything. */
497 for (now=start;now<end;now+=PAGE_SIZE) {
498 captive_shared_cache_map_object->pages[now/PAGE_SIZE].data_valid=TRUE;
499 /* .dirty is undefined */
503 void captive_shared_cache_map_set_data_invalid(CaptiveSharedCacheMapObject *captive_shared_cache_map_object,
504 guint64 start,guint64 end)
508 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
509 g_return_if_fail(start<=end);
510 g_return_if_fail(end<=CAPTIVE_ROUND_UP64(captive_shared_cache_map_object->AllocationSize,PAGE_SIZE));
512 start=CAPTIVE_ROUND_DOWN64(start,PAGE_SIZE);
513 end=CAPTIVE_ROUND_UP64(end,PAGE_SIZE);
515 for (now=start;now<end;now+=PAGE_SIZE) {
516 captive_shared_cache_map_object->pages[now/PAGE_SIZE].data_valid=FALSE;
520 void captive_shared_cache_map_set_dirty(CaptiveSharedCacheMapObject *captive_shared_cache_map_object,
521 guint64 start,guint64 end)
524 CaptiveSharedCacheMapObject_page *page;
526 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
527 g_return_if_fail(end<=CAPTIVE_ROUND_UP64(captive_shared_cache_map_object->AllocationSize,PAGE_SIZE));
529 start=CAPTIVE_ROUND_DOWN64(start,PAGE_SIZE);
530 end=CAPTIVE_ROUND_UP64(end,PAGE_SIZE);
532 for (now=start;now<end;now+=PAGE_SIZE) {
533 page=captive_shared_cache_map_object->pages+now/PAGE_SIZE;
534 g_assert(page->data_valid);
543 gboolean captive_shared_cache_map_is_page_dirty(CaptiveSharedCacheMapObject *captive_shared_cache_map_object,
546 CaptiveSharedCacheMapObject_page *page;
548 g_return_val_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object),FALSE);
549 g_return_val_if_fail(offset<CAPTIVE_ROUND_UP64(captive_shared_cache_map_object->AllocationSize,PAGE_SIZE),FALSE);
550 g_return_val_if_fail(0==CAPTIVE_ROUND_DOWN_EXCEEDING64(offset,PAGE_SIZE),FALSE);
551 page=captive_shared_cache_map_object->pages+offset/PAGE_SIZE;
552 g_return_val_if_fail(page->data_valid,FALSE);
557 void captive_shared_cache_map_page_set_lsn(CaptiveSharedCacheMapObject *captive_shared_cache_map_object,
558 guint64 offset,gint64 lsn)
560 CaptiveSharedCacheMapObject_page *page;
562 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
563 g_return_if_fail(offset<=CAPTIVE_ROUND_UP64(captive_shared_cache_map_object->AllocationSize,PAGE_SIZE));
564 g_return_if_fail(0==CAPTIVE_ROUND_DOWN_EXCEEDING64(offset,PAGE_SIZE));
565 page=captive_shared_cache_map_object->pages+offset/PAGE_SIZE;
566 g_return_if_fail(page->data_valid);
567 g_return_if_fail(page->dirty);
568 g_return_if_fail(page->lsn_oldest<=page->lsn_newest);
569 g_return_if_fail(!page->lsn_newest || lsn>=page->lsn_newest);
570 g_return_if_fail(captive_shared_cache_map_object->LogHandle_set);
571 g_return_if_fail(captive_shared_cache_map_object->FlushToLsnRoutine_set);
573 if (!page->lsn_oldest)
574 page->lsn_oldest=lsn;
575 page->lsn_newest=lsn;
578 void captive_shared_cache_map_purge(CaptiveSharedCacheMapObject *captive_shared_cache_map_object)
581 CaptiveSharedCacheMapObject_page *page;
583 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
585 g_signal_emit(captive_shared_cache_map_object,purge_signal,0);
587 /* Needed by fastfat.sys of NT-5.1sp1 during FAT32 unmount
588 * otherwise it fails on: g_assert(!page->dirty);
589 * It corrupts the disk if the buffer is dropped instead.
591 captive_shared_cache_map_flush(captive_shared_cache_map_object,
592 0,CAPTIVE_ROUND_UP64(captive_shared_cache_map_object->AllocationSize,PAGE_SIZE));
594 for (offset=0;offset<CAPTIVE_ROUND_UP64(captive_shared_cache_map_object->AllocationSize,PAGE_SIZE);offset+=PAGE_SIZE) {
595 page=captive_shared_cache_map_object->pages+offset/PAGE_SIZE;
596 if (!page->data_valid)
598 g_assert(!page->dirty);
599 page->data_valid=FALSE;
603 static VOID *captive_LogHandle;
604 static PFLUSH_TO_LSN captive_FlushToLsnRoutine;
606 void captive_shared_cache_map_set_LogHandle(CaptiveSharedCacheMapObject *captive_shared_cache_map_object,VOID *LogHandle)
608 g_return_if_fail(!captive_shared_cache_map_object || CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
609 /* FIXME: 'captive_shared_cache_map_object->LogHandle_set' may be set.
610 * Does it mean 'LogHandle_set' is 'FileObject'-based instead of 'SharedCacheMap'-based?
615 g_assert(!captive_LogHandle || captive_LogHandle==LogHandle);
616 captive_LogHandle=LogHandle;
617 if (LogHandle && captive_shared_cache_map_object)
618 captive_shared_cache_map_object->LogHandle_set=TRUE;
621 void captive_shared_cache_map_set_FlushToLsnRoutine
622 (CaptiveSharedCacheMapObject *captive_shared_cache_map_object,PFLUSH_TO_LSN FlushToLsnRoutine)
624 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
625 /* FIXME: 'captive_shared_cache_map_object->FlushToLsnRoutine_set' may be set.
626 * Does it mean 'FlushToLsnRoutine_set' is 'FileObject'-based instead of 'SharedCacheMap'-based?
629 if (!FlushToLsnRoutine)
631 g_assert(!captive_FlushToLsnRoutine || captive_FlushToLsnRoutine==FlushToLsnRoutine);
632 captive_FlushToLsnRoutine=FlushToLsnRoutine;
633 if (FlushToLsnRoutine)
634 captive_shared_cache_map_object->FlushToLsnRoutine_set=TRUE;
637 static void captive_shared_cache_map_page_write(CaptiveSharedCacheMapObject *captive_shared_cache_map_object,
640 LARGE_INTEGER offset_LargeInteger;
641 static gint64 lsn_last;
642 CaptiveSharedCacheMapObject_page *page;
644 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
645 g_return_if_fail(captive_shared_cache_map_object->FileObject!=NULL);
646 g_return_if_fail(offset<=CAPTIVE_ROUND_UP64(captive_shared_cache_map_object->AllocationSize,PAGE_SIZE));
647 g_return_if_fail(0==CAPTIVE_ROUND_DOWN_EXCEEDING64(offset,PAGE_SIZE));
648 page=captive_shared_cache_map_object->pages+offset/PAGE_SIZE;
649 g_return_if_fail(page->data_valid);
650 g_return_if_fail(page->dirty);
652 if (page->lsn_newest) {
654 g_assert(!lsn_last || lsn_last<=page->lsn_newest);
655 lsn_last=page->lsn_newest;
657 captive_stdcall_call_12((CaptiveStdCallFunc12)captive_FlushToLsnRoutine,
659 (gpointer)(guint32)(page->lsn_newest>> 0U), /* 'LARGE_INTEGER' argument */
660 (gpointer)(guint32)(page->lsn_newest>>32U));
663 offset_LargeInteger.QuadPart=offset;
664 captive_Cc_IoPageWrite(captive_shared_cache_map_object->FileObject,
665 captive_shared_cache_map_object->buffer+offset,PAGE_SIZE,&offset_LargeInteger);
672 typedef struct _captive_shared_cache_map_flush_lsn_sort captive_shared_cache_map_flush_lsn_sort;
673 struct _captive_shared_cache_map_flush_lsn_sort {
675 CaptiveSharedCacheMapObject *captive_shared_cache_map_object;
679 typedef struct _captive_shared_cache_map_flush_lsn_pages_foreach_param
680 captive_shared_cache_map_flush_lsn_pages_foreach_param;
681 struct _captive_shared_cache_map_flush_lsn_pages_foreach_param {
683 guint lsn_pages_count;
684 captive_shared_cache_map_flush_lsn_sort *lsn_pages_pointer; /* Not filled in if NULL */
687 static void captive_shared_cache_map_flush_lsn_pages_foreach(
688 CaptiveSharedCacheMapObject *captive_shared_cache_map_object, /* key */
689 CaptiveSharedCacheMapObject *captive_shared_cache_map_object_value, /* value */
690 captive_shared_cache_map_flush_lsn_pages_foreach_param *param) /* user_data */
693 CaptiveSharedCacheMapObject_page *page;
695 #if 0 /* acceleration */
696 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
697 g_return_if_fail(captive_shared_cache_map_object==captive_shared_cache_map_object_value);
698 g_return_if_fail(param!=NULL);
701 for (now=0;now<captive_shared_cache_map_object->AllocationSize;now+=PAGE_SIZE) {
702 page=captive_shared_cache_map_object->pages+now/PAGE_SIZE;
703 if (!page->data_valid)
707 if (!page->lsn_newest)
709 if (page->lsn_newest>param->lsn_target)
711 param->lsn_pages_count++;
712 if (!param->lsn_pages_pointer)
714 param->lsn_pages_pointer->lsn=page->lsn_newest;
715 param->lsn_pages_pointer->captive_shared_cache_map_object=captive_shared_cache_map_object;
716 param->lsn_pages_pointer->offset=now;
717 param->lsn_pages_pointer++;
721 static int captive_shared_cache_map_flush_lsn_pages_compar
722 (const captive_shared_cache_map_flush_lsn_sort *a,const captive_shared_cache_map_flush_lsn_sort *b)
724 #if 0 /* acceleration */
725 g_return_val_if_fail(a!=NULL,0);
726 g_return_val_if_fail(b!=NULL,0);
729 return (a->lsn>b->lsn)-(b->lsn>a->lsn);
732 guint64 captive_shared_cache_map_flush(CaptiveSharedCacheMapObject *captive_shared_cache_map_object,
733 guint64 start,guint64 end)
738 captive_shared_cache_map_flush_lsn_pages_foreach_param lsn_pages_foreach_param;
739 captive_shared_cache_map_flush_lsn_sort *lsn_pages_pointer;
740 const captive_shared_cache_map_flush_lsn_sort *lsn_page;
741 guint lsn_pages_count;
743 g_return_val_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object),0);
744 g_return_val_if_fail(start<=end,0);
746 end=MIN(end,CAPTIVE_ROUND_UP64(captive_shared_cache_map_object->AllocationSize,PAGE_SIZE));
748 start=CAPTIVE_ROUND_DOWN64(start,PAGE_SIZE);
749 end=CAPTIVE_ROUND_UP64(end,PAGE_SIZE);
752 for (now=start;now<end;now+=PAGE_SIZE) {
753 CaptiveSharedCacheMapObject_page *page;
755 page=captive_shared_cache_map_object->pages+now/PAGE_SIZE;
756 if (!page->data_valid)
760 if (!page->lsn_newest)
762 if (!lsn_target || lsn_target<page->lsn_newest)
763 lsn_target=page->lsn_newest;
766 lsn_pages_foreach_param.lsn_target=lsn_target;
767 lsn_pages_foreach_param.lsn_pages_count=0;
768 lsn_pages_foreach_param.lsn_pages_pointer=NULL; /* Not yet filling */
769 g_hash_table_foreach(
770 CaptiveSharedCacheMapObject_hash, /* hash_table */
771 (GHFunc)captive_shared_cache_map_flush_lsn_pages_foreach, /* func */
772 &lsn_pages_foreach_param); /* user_data */
774 lsn_pages_count=lsn_pages_foreach_param.lsn_pages_count;
775 captive_newn(lsn_pages_pointer,lsn_pages_count);
776 g_assert(lsn_pages_foreach_param.lsn_target==lsn_target);
777 lsn_pages_foreach_param.lsn_pages_count=0;
778 lsn_pages_foreach_param.lsn_pages_pointer=lsn_pages_pointer;
779 g_hash_table_foreach(
780 CaptiveSharedCacheMapObject_hash, /* hash_table */
781 (GHFunc)captive_shared_cache_map_flush_lsn_pages_foreach, /* func */
782 &lsn_pages_foreach_param); /* user_data */
784 g_assert(lsn_pages_foreach_param.lsn_target==lsn_target);
785 g_assert(lsn_pages_foreach_param.lsn_pages_count==lsn_pages_count);
786 g_assert(lsn_pages_foreach_param.lsn_pages_pointer==lsn_pages_pointer+lsn_pages_count);
788 qsort(lsn_pages_pointer,lsn_pages_count,sizeof(*lsn_pages_pointer),
789 (int (*)(const void *,const void *))captive_shared_cache_map_flush_lsn_pages_compar);
793 for (lsn_page=lsn_pages_pointer;lsn_page<lsn_pages_pointer+lsn_pages_count;lsn_page++) {
794 captive_shared_cache_map_page_write(lsn_page->captive_shared_cache_map_object,lsn_page->offset);
795 if (lsn_page->captive_shared_cache_map_object==captive_shared_cache_map_object
796 && lsn_page->offset>=start && lsn_page->offset<end)
800 g_free(lsn_pages_pointer);
802 for (now=start;now<end;now+=PAGE_SIZE) {
803 CaptiveSharedCacheMapObject_page *page;
805 page=captive_shared_cache_map_object->pages+now/PAGE_SIZE;
806 if (!page->data_valid)
810 captive_shared_cache_map_page_write(captive_shared_cache_map_object,now);
814 /* We were calling W32 code - recheck our task completion. */
815 for (now=start;now<end;now+=PAGE_SIZE) {
816 CaptiveSharedCacheMapObject_page *page;
818 page=captive_shared_cache_map_object->pages+now/PAGE_SIZE;
819 if (!page->data_valid)
821 g_assert(!page->dirty);
827 static void captive_shared_cache_map_is_any_dirty_foreach(
828 CaptiveSharedCacheMapObject *captive_shared_cache_map_object, /* key */
829 CaptiveSharedCacheMapObject *captive_shared_cache_map_object_value, /* value */
830 gboolean *dirty_foundp) /* user_data */
834 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
835 g_return_if_fail(captive_shared_cache_map_object==captive_shared_cache_map_object_value);
836 g_return_if_fail(dirty_foundp!=NULL);
838 for (now=0;now<captive_shared_cache_map_object->AllocationSize;now+=PAGE_SIZE) {
839 CaptiveSharedCacheMapObject_page *page;
841 page=captive_shared_cache_map_object->pages+now/PAGE_SIZE;
842 if (!page->data_valid)
846 *dirty_foundp=TRUE; /* FIXME: stop the traversal. */
852 gboolean captive_shared_cache_map_is_any_dirty(void)
854 gboolean dirty_found;
856 CaptiveSharedCacheMapObject_hash_init();
858 g_hash_table_foreach(
859 CaptiveSharedCacheMapObject_hash, /* hash_table */
860 (GHFunc)captive_shared_cache_map_is_any_dirty_foreach, /* func */
861 &dirty_found); /* user_data */
867 typedef struct _captive_shared_cache_map_CcGetDirtyPages_foreach_param captive_shared_cache_map_CcGetDirtyPages_foreach_param;
868 struct _captive_shared_cache_map_CcGetDirtyPages_foreach_param {
869 PDIRTY_PAGE_ROUTINE DirtyPageRoutine;
875 static void captive_shared_cache_map_CcGetDirtyPages_foreach(
876 CaptiveSharedCacheMapObject *captive_shared_cache_map_object, /* key */
877 CaptiveSharedCacheMapObject *captive_shared_cache_map_object_value, /* value */
878 captive_shared_cache_map_CcGetDirtyPages_foreach_param *param) /* user_data */
881 CaptiveSharedCacheMapObject_page *page;
883 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
884 g_return_if_fail(captive_shared_cache_map_object->FileObject!=NULL);
885 g_return_if_fail(captive_shared_cache_map_object==captive_shared_cache_map_object_value);
886 g_return_if_fail(param!=NULL);
888 for (now=CAPTIVE_ROUND_DOWN64(captive_shared_cache_map_object->AllocationSize-1,PAGE_SIZE);now>=0;now-=PAGE_SIZE) {
889 LARGE_INTEGER now_LargeInteger,lsn_oldest_LargeInteger,lsn_newest_LargeInteger;
891 page=captive_shared_cache_map_object->pages+now/PAGE_SIZE;
892 if (!page->data_valid)
896 if (page->lsn_oldest && (!param->result || param->result>page->lsn_oldest))
897 param->result=page->lsn_oldest;
899 now_LargeInteger.QuadPart=now;
900 lsn_oldest_LargeInteger.QuadPart=page->lsn_oldest;
901 lsn_newest_LargeInteger.QuadPart=page->lsn_newest;
902 (*param->DirtyPageRoutine)(
903 captive_shared_cache_map_object->FileObject, /* FileObject */
904 &now_LargeInteger, /* FileOffset */
905 PAGE_SIZE, /* Length */
906 &lsn_oldest_LargeInteger, /* OldestLsn */
907 &lsn_newest_LargeInteger, /* NewestLsn */
908 param->Context1, /* Context1 */
909 param->Context2); /* Context2 */
913 gint64 captive_shared_cache_map_CcGetDirtyPages(PDIRTY_PAGE_ROUTINE DirtyPageRoutine,VOID *Context1,VOID *Context2)
915 captive_shared_cache_map_CcGetDirtyPages_foreach_param param;
917 g_return_val_if_fail(DirtyPageRoutine!=NULL,0);
919 param.DirtyPageRoutine=DirtyPageRoutine;
920 param.Context1=Context1;
921 param.Context2=Context2;
924 CaptiveSharedCacheMapObject_hash_init();
925 g_hash_table_foreach(
926 CaptiveSharedCacheMapObject_hash, /* hash_table */
927 (GHFunc)captive_shared_cache_map_CcGetDirtyPages_foreach, /* func */
928 ¶m); /* user_data */
933 gpointer captive_shared_cache_map_get_buffer(CaptiveSharedCacheMapObject *captive_shared_cache_map_object)
935 g_return_val_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object),NULL);
936 g_return_val_if_fail(captive_shared_cache_map_object->buffer!=NULL,NULL);
938 return captive_shared_cache_map_object->buffer;
941 static void captive_cc_FileObject_delete_foreach(
942 CaptiveSharedCacheMapObject *captive_shared_cache_map_object, /* key */
943 CaptiveSharedCacheMapObject *captive_shared_cache_map_object_value, /* value */
944 FILE_OBJECT *FileObject) /* user_data */
946 g_return_if_fail(CAPTIVE_SHARED_CACHE_MAP_IS_OBJECT(captive_shared_cache_map_object));
947 g_return_if_fail(captive_shared_cache_map_object==captive_shared_cache_map_object_value);
948 g_return_if_fail(FileObject!=NULL);
950 g_assert(FileObject!=captive_shared_cache_map_object->FileObject);
953 BOOLEAN captive_cc_FileObject_delete(FILE_OBJECT *FileObject)
955 g_return_val_if_fail(FileObject!=NULL,FALSE);
957 CaptiveSharedCacheMapObject_hash_init();
958 g_hash_table_foreach(
959 CaptiveSharedCacheMapObject_hash, /* hash_table */
960 (GHFunc)captive_cc_FileObject_delete_foreach, /* func */
961 FileObject); /* user_data */
963 return FALSE; /* FIXME: remove useless return code. */