blob: e6755d915cd6471fda98ba75dc59f14eae31112a (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/*++
Copyright (c) 1990 Microsoft Corporation
Module Name:
cachedat.c
Abstract:
This module implements the Memory Management based cache management
routines for the common Cache subsystem.
Author:
Tom Miller [TomM] 4-May-1990
Revision History:
--*/
#include "cc.h"
//
// Global SharedCacheMap lists and resource to synchronize access to it.
//
//
extern KSPIN_LOCK CcMasterSpinLock;
LIST_ENTRY CcCleanSharedCacheMapList;
SHARED_CACHE_MAP_LIST_CURSOR CcDirtySharedCacheMapList;
SHARED_CACHE_MAP_LIST_CURSOR CcLazyWriterCursor;
//
// Worker thread structures:
//
// A spinlock to synchronize all three lists.
// A count of the number of worker threads Cc will use
// A listhead for preinitialized executive work items for Cc use.
// A listhead for an express queue of WORK_QUEUE_ENTRYs
// A listhead for a regular queue of WORK_QUEUE_ENTRYs
//
extern KSPIN_LOCK CcWorkQueueSpinlock;
ULONG CcNumberWorkerThreads = 0;
LIST_ENTRY CcIdleWorkerThreadList;
LIST_ENTRY CcExpressWorkQueue;
LIST_ENTRY CcRegularWorkQueue;
//
// Store the current idle delay and target time to clean all.
//
LARGE_INTEGER CcNoDelay;
LARGE_INTEGER CcFirstDelay = {(ULONG)-(3*LAZY_WRITER_IDLE_DELAY), -1};
LARGE_INTEGER CcIdleDelay = {(ULONG)-LAZY_WRITER_IDLE_DELAY, -1};
LARGE_INTEGER CcCollisionDelay = {(ULONG)-LAZY_WRITER_COLLISION_DELAY, -1};
LARGE_INTEGER CcTargetCleanDelay = {(ULONG)-(LONG)(LAZY_WRITER_IDLE_DELAY * (LAZY_WRITER_MAX_AGE_TARGET + 1)), -1};
//
// Spinlock for controlling access to Vacb and related global structures,
// and a counter indicating how many Vcbs are active.
//
extern KSPIN_LOCK CcVacbSpinLock;
ULONG CcNumberVacbs;
//
// Pointer to the global Vacb vector.
//
PVACB CcVacbs;
PVACB CcBeyondVacbs;
PVACB CcNextVictimVacb;
//
// Deferred write list and respective Thresholds
//
extern KSPIN_LOCK CcDeferredWriteSpinLock;
LIST_ENTRY CcDeferredWrites;
ULONG CcDirtyPageThreshold;
ULONG CcDirtyPageTarget;
ULONG CcPagesYetToWrite;
ULONG CcPagesWrittenLastTime = 0;
ULONG CcDirtyPagesLastScan = 0;
ULONG CcAvailablePagesThreshold = 100;
ULONG CcTotalDirtyPages = 0;
//
// Captured system size
//
MM_SYSTEMSIZE CcCapturedSystemSize;
//
// Tuning options du Jour
//
ULONG CcTune = 0;
//
// Global structure controlling lazy writer algorithms
//
LAZY_WRITER LazyWriter;
NPAGED_LOOKASIDE_LIST CcTwilightLookasideList;
#ifdef CCDBG
LONG CcDebugTraceLevel = 0;
LONG CcDebugTraceIndent = 0;
#ifdef CCDBG_LOCK
extern KSPIN_LOCK CcDebugTraceLock;
#endif // def CCDBG_LOCK
#endif
//
// Global list of pinned Bcbs which may be examined for debug purposes
//
#if DBG
ULONG CcBcbCount;
LIST_ENTRY CcBcbList;
extern KSPIN_LOCK CcBcbSpinLock;
#endif
//
// Throw away miss counter.
//
ULONG CcThrowAway;
//
// Performance Counters
//
ULONG CcFastReadNoWait;
ULONG CcFastReadWait;
ULONG CcFastReadResourceMiss;
ULONG CcFastReadNotPossible;
ULONG CcFastMdlReadNoWait;
ULONG CcFastMdlReadWait;
ULONG CcFastMdlReadResourceMiss;
ULONG CcFastMdlReadNotPossible;
ULONG CcMapDataNoWait;
ULONG CcMapDataWait;
ULONG CcMapDataNoWaitMiss;
ULONG CcMapDataWaitMiss;
ULONG CcPinMappedDataCount;
ULONG CcPinReadNoWait;
ULONG CcPinReadWait;
ULONG CcPinReadNoWaitMiss;
ULONG CcPinReadWaitMiss;
ULONG CcCopyReadNoWait;
ULONG CcCopyReadWait;
ULONG CcCopyReadNoWaitMiss;
ULONG CcCopyReadWaitMiss;
ULONG CcMdlReadNoWait;
ULONG CcMdlReadWait;
ULONG CcMdlReadNoWaitMiss;
ULONG CcMdlReadWaitMiss;
ULONG CcReadAheadIos;
ULONG CcLazyWriteHotSpots;
ULONG CcLazyWriteIos;
ULONG CcLazyWritePages;
ULONG CcDataFlushes;
ULONG CcDataPages;
PULONG CcMissCounter = &CcThrowAway;
|
