1 a0d146ed 2005-07-12 devnull typedef struct Config		Config;
  2 a0d146ed 2005-07-12 devnull typedef struct AMap		AMap;
  3 a0d146ed 2005-07-12 devnull typedef struct AMapN		AMapN;
  4 a0d146ed 2005-07-12 devnull typedef struct Arena		Arena;
  5 a0d146ed 2005-07-12 devnull typedef struct AState	AState;
  6 7a400ee9 2007-09-25 rsc typedef struct ArenaCIG	ArenaCIG;
  7 a0d146ed 2005-07-12 devnull typedef struct ArenaHead	ArenaHead;
  8 a0d146ed 2005-07-12 devnull typedef struct ArenaPart	ArenaPart;
  9 a0d146ed 2005-07-12 devnull typedef struct ArenaTail	ArenaTail;
 10 a0d146ed 2005-07-12 devnull typedef struct ATailStats	ATailStats;
 11 a0d146ed 2005-07-12 devnull typedef struct CIBlock		CIBlock;
 12 a0d146ed 2005-07-12 devnull typedef struct Clump		Clump;
 13 a0d146ed 2005-07-12 devnull typedef struct ClumpInfo	ClumpInfo;
 14 a0d146ed 2005-07-12 devnull typedef struct Graph Graph;
 15 a0d146ed 2005-07-12 devnull typedef struct IAddr		IAddr;
 16 a0d146ed 2005-07-12 devnull typedef struct IBucket		IBucket;
 17 a0d146ed 2005-07-12 devnull typedef struct IEStream		IEStream;
 18 a0d146ed 2005-07-12 devnull typedef struct IEntry		IEntry;
 19 a0d146ed 2005-07-12 devnull typedef struct IFile		IFile;
 20 a0d146ed 2005-07-12 devnull typedef struct ISect		ISect;
 21 a0d146ed 2005-07-12 devnull typedef struct Index		Index;
 22 a0d146ed 2005-07-12 devnull typedef struct Lump		Lump;
 23 a0d146ed 2005-07-12 devnull typedef struct DBlock		DBlock;
 24 a0d146ed 2005-07-12 devnull typedef struct Part		Part;
 25 a0d146ed 2005-07-12 devnull typedef struct Statbin Statbin;
 26 a0d146ed 2005-07-12 devnull typedef struct Statdesc	Statdesc;
 27 a0d146ed 2005-07-12 devnull typedef struct Stats		Stats;
 28 a0d146ed 2005-07-12 devnull typedef struct ZBlock		ZBlock;
 29 a0d146ed 2005-07-12 devnull typedef struct Round	Round;
 30 a0d146ed 2005-07-12 devnull typedef struct Bloom	Bloom;
 31 a0d146ed 2005-07-12 devnull 
 32 7a400ee9 2007-09-25 rsc #pragma incomplete IEStream
 33 7a400ee9 2007-09-25 rsc 
 34 7a400ee9 2007-09-25 rsc #define	TWID32	((u32int)~(u32int)0)
 35 7a400ee9 2007-09-25 rsc #define	TWID64	((u64int)~(u64int)0)
 36 a0d146ed 2005-07-12 devnull #define	TWID8	((u8int)~(u8int)0)
 37 a0d146ed 2005-07-12 devnull 
 38 a0d146ed 2005-07-12 devnull enum
 39 a0d146ed 2005-07-12 devnull {
 40 75d04888 2009-05-25 rsc 	/*
 41 75d04888 2009-05-25 rsc 	 * formerly fundamental constant,
 42 75d04888 2009-05-25 rsc 	 * now a server-imposed limitation.
 43 75d04888 2009-05-25 rsc 	 */
 44 75d04888 2009-05-25 rsc 	VtMaxLumpSize	= 56*1024,
 45 75d04888 2009-05-25 rsc 
 46 a0d146ed 2005-07-12 devnull 	ABlockLog		= 9,		/* log2(512), the quantum for reading arenas */
 47 a0d146ed 2005-07-12 devnull 	ANameSize		= 64,
 48 a0d146ed 2005-07-12 devnull 	MaxDiskBlock		= 64*1024,	/* max. allowed size for a disk block */
 49 a0d146ed 2005-07-12 devnull 	MaxIoSize		= 64*1024,	/* max. allowed size for a disk io operation */
 50 a0d146ed 2005-07-12 devnull 	PartBlank		= 256*1024,	/* untouched section at beginning of partition */
 51 a0d146ed 2005-07-12 devnull 	HeadSize		= 512,		/* size of a header after PartBlank */
 52 a0d146ed 2005-07-12 devnull 	MinArenaSize		= 1*1024*1024,	/* smallest reasonable arena size */
 53 a0d146ed 2005-07-12 devnull 	IndexBase		= 1024*1024,	/* initial address to use in an index */
 54 a0d146ed 2005-07-12 devnull 	MaxIo			= 64*1024,	/* max size of a single read or write operation */
 55 a0d146ed 2005-07-12 devnull 	ICacheBits		= 16,		/* default bits for indexing icache */
 56 ce31e3d4 2008-07-04 rsc 	MaxAMap			= 31*1024,	/* max. allowed arenas in an address mapping; must be < 32*1024 */
 57 a0d146ed 2005-07-12 devnull 
 58 a0d146ed 2005-07-12 devnull 	/*
 59 a0d146ed 2005-07-12 devnull 	 * return codes from syncarena
 60 a0d146ed 2005-07-12 devnull 	 */
 61 a0d146ed 2005-07-12 devnull 	SyncDataErr	= 1 << 0,		/* problem reading the clump data */
 62 a0d146ed 2005-07-12 devnull 	SyncCIErr	= 1 << 1,		/* found erroneous clump directory entries */
 63 a0d146ed 2005-07-12 devnull 	SyncCIZero	= 1 << 2,		/* found unwritten clump directory entries */
 64 a0d146ed 2005-07-12 devnull 	SyncFixErr	= 1 << 3,		/* error writing fixed data */
 65 a0d146ed 2005-07-12 devnull 	SyncHeader	= 1 << 4,		/* altered header fields */
 66 a0d146ed 2005-07-12 devnull 
 67 a0d146ed 2005-07-12 devnull 	/*
 68 a0d146ed 2005-07-12 devnull 	 * error severity
 69 a0d146ed 2005-07-12 devnull 	 */
 70 a0d146ed 2005-07-12 devnull 	EOk			= 0,		/* error expected in normal operation */
 71 a0d146ed 2005-07-12 devnull 	EStrange,				/* strange error that should be logged */
 72 a0d146ed 2005-07-12 devnull 	ECorrupt,				/* corrupted data found in arenas */
 73 a0d146ed 2005-07-12 devnull 	EICorrupt,				/* corrupted data found in index */
 74 a0d146ed 2005-07-12 devnull 	EAdmin,					/* should be brought to administrators' attention */
 75 a0d146ed 2005-07-12 devnull 	ECrash,					/* really bad internal error */
 76 a0d146ed 2005-07-12 devnull 	EBug,					/* a limitation which should be fixed */
 77 a0d146ed 2005-07-12 devnull 	EInconsist,				/* inconsistencies between index and arena */
 78 a0d146ed 2005-07-12 devnull 	EMax,
 79 a0d146ed 2005-07-12 devnull 
 80 a0d146ed 2005-07-12 devnull 	/*
 81 a0d146ed 2005-07-12 devnull 	 * internal disk formats for the venti archival storage system
 82 a0d146ed 2005-07-12 devnull 	 */
 83 a0d146ed 2005-07-12 devnull 	/*
 84 a0d146ed 2005-07-12 devnull 	 * magic numbers on disk
 85 a0d146ed 2005-07-12 devnull 	 */
 86 28b49df3 2006-07-18 devnull 	_ClumpMagic		= 0xd15cb10cU,	/* clump header, deprecated */
 87 a0d146ed 2005-07-12 devnull 	ClumpFreeMagic		= 0,		/* free clump; terminates active clump log */
 88 a0d146ed 2005-07-12 devnull 
 89 28b49df3 2006-07-18 devnull 	ArenaPartMagic		= 0xa9e4a5e7U,	/* arena partition header */
 90 28b49df3 2006-07-18 devnull 	ArenaMagic		= 0xf2a14eadU,	/* arena trailer */
 91 28b49df3 2006-07-18 devnull 	ArenaHeadMagic		= 0xd15c4eadU,	/* arena header */
 92 28b49df3 2006-07-18 devnull 	
 93 28b49df3 2006-07-18 devnull 	BloomMagic		= 0xb1004eadU,	/* bloom filter header */
 94 a0d146ed 2005-07-12 devnull 	BloomMaxHash	= 32,
 95 a0d146ed 2005-07-12 devnull 
 96 28b49df3 2006-07-18 devnull 	ISectMagic		= 0xd15c5ec7U,	/* index header */
 97 a0d146ed 2005-07-12 devnull 
 98 a0d146ed 2005-07-12 devnull 	ArenaPartVersion	= 3,
 99 a0d146ed 2005-07-12 devnull 	ArenaVersion4		= 4,
100 a0d146ed 2005-07-12 devnull 	ArenaVersion5		= 5,
101 a0d146ed 2005-07-12 devnull 	BloomVersion		= 1,
102 a0d146ed 2005-07-12 devnull 	IndexVersion		= 1,
103 a0d146ed 2005-07-12 devnull 	ISectVersion1		= 1,
104 a0d146ed 2005-07-12 devnull 	ISectVersion2		= 2,
105 a0d146ed 2005-07-12 devnull 
106 a0d146ed 2005-07-12 devnull 	/*
107 a0d146ed 2005-07-12 devnull 	 * encodings of clumps on disk
108 a0d146ed 2005-07-12 devnull 	 */
109 a0d146ed 2005-07-12 devnull 	ClumpEErr		= 0,		/* can't happen */
110 a0d146ed 2005-07-12 devnull 	ClumpENone,				/* plain */
111 a0d146ed 2005-07-12 devnull 	ClumpECompress,				/* compressed */
112 a0d146ed 2005-07-12 devnull 	ClumpEMax,
113 a0d146ed 2005-07-12 devnull 
114 a0d146ed 2005-07-12 devnull 	/*
115 a0d146ed 2005-07-12 devnull 	 * sizes in bytes on disk
116 a0d146ed 2005-07-12 devnull 	 */
117 a0d146ed 2005-07-12 devnull 	U8Size			= 1,
118 a0d146ed 2005-07-12 devnull 	U16Size			= 2,
119 a0d146ed 2005-07-12 devnull 	U32Size			= 4,
120 a0d146ed 2005-07-12 devnull 	U64Size			= 8,
121 a0d146ed 2005-07-12 devnull 
122 a0d146ed 2005-07-12 devnull 	ArenaPartSize		= 4 * U32Size,
123 a0d146ed 2005-07-12 devnull 	ArenaSize4		= 2 * U64Size + 6 * U32Size + ANameSize + U8Size,
124 a0d146ed 2005-07-12 devnull 	ArenaSize5			= ArenaSize4 + U32Size,
125 28b49df3 2006-07-18 devnull 	ArenaSize5a		= ArenaSize5 + 2 * U8Size + 2 * U32Size + 2 * U64Size,
126 a0d146ed 2005-07-12 devnull 	ArenaHeadSize4		= U64Size + 3 * U32Size + ANameSize,
127 a0d146ed 2005-07-12 devnull 	ArenaHeadSize5		= ArenaHeadSize4 + U32Size,
128 a0d146ed 2005-07-12 devnull 	BloomHeadSize	= 4 * U32Size,
129 a0d146ed 2005-07-12 devnull 	ISectSize1		= 7 * U32Size + 2 * ANameSize,
130 a0d146ed 2005-07-12 devnull 	ISectSize2		= ISectSize1 + U32Size,
131 a0d146ed 2005-07-12 devnull 	ClumpInfoSize		= U8Size + 2 * U16Size + VtScoreSize,
132 a0d146ed 2005-07-12 devnull 	ClumpSize		= ClumpInfoSize + U8Size + 3 * U32Size,
133 a0d146ed 2005-07-12 devnull 	MaxBloomSize		= 1<<(32-3),	/* 2^32 bits */
134 a0d146ed 2005-07-12 devnull 	MaxBloomHash	= 32,		/* bits per score */
135 a0d146ed 2005-07-12 devnull 	/*
136 a0d146ed 2005-07-12 devnull 	 * BUG - The various block copies that manipulate entry buckets
137 a0d146ed 2005-07-12 devnull 	 * would be faster if we bumped IBucketSize up to 8 and IEntrySize up to 40,
138 a0d146ed 2005-07-12 devnull 	 * so that everything is word-aligned.  Buildindex is actually cpu-bound
139 a0d146ed 2005-07-12 devnull 	 * by the (byte at a time) copying in qsort.
140 a0d146ed 2005-07-12 devnull 	 */
141 a0d146ed 2005-07-12 devnull 	IBucketSize		= U32Size + U16Size,
142 a0d146ed 2005-07-12 devnull 	IEntrySize		= U64Size + U32Size + 2*U16Size + 2*U8Size + VtScoreSize,
143 28b49df3 2006-07-18 devnull 	IEntryTypeOff		= VtScoreSize + U32Size + U16Size + U64Size + U16Size,
144 28b49df3 2006-07-18 devnull 	IEntryAddrOff		= VtScoreSize + U32Size + U16Size,
145 a0d146ed 2005-07-12 devnull 
146 a0d146ed 2005-07-12 devnull 	MaxClumpBlocks		=  (VtMaxLumpSize + ClumpSize + (1 << ABlockLog) - 1) >> ABlockLog,
147 28b49df3 2006-07-18 devnull 	
148 28b49df3 2006-07-18 devnull 	IcacheFrac		= 1000000,	/* denominator */
149 a0d146ed 2005-07-12 devnull 
150 28b49df3 2006-07-18 devnull 	SleepForever		= 1000000000,	/* magic value for sleep time */
151 a0d146ed 2005-07-12 devnull 	/*
152 a0d146ed 2005-07-12 devnull 	 * dirty flags - order controls disk write order
153 a0d146ed 2005-07-12 devnull 	 */
154 a0d146ed 2005-07-12 devnull 	DirtyArena		= 1,
155 a0d146ed 2005-07-12 devnull 	DirtyArenaCib,
156 a0d146ed 2005-07-12 devnull 	DirtyArenaTrailer,
157 a0d146ed 2005-07-12 devnull 	DirtyMax,
158 7a400ee9 2007-09-25 rsc 	
159 7a400ee9 2007-09-25 rsc 	ArenaCIGSize = 10*1024,	// about 0.5 MB worth of IEntry.
160 a0d146ed 2005-07-12 devnull 
161 a0d146ed 2005-07-12 devnull 	VentiZZZZZZZZ
162 a0d146ed 2005-07-12 devnull };
163 a0d146ed 2005-07-12 devnull 
164 a0d146ed 2005-07-12 devnull extern char TraceDisk[];
165 a0d146ed 2005-07-12 devnull extern char TraceLump[];
166 a0d146ed 2005-07-12 devnull extern char TraceBlock[];
167 a0d146ed 2005-07-12 devnull extern char TraceProc[];
168 a0d146ed 2005-07-12 devnull extern char TraceWork[];
169 a0d146ed 2005-07-12 devnull extern char TraceQuiet[];
170 a0d146ed 2005-07-12 devnull extern char TraceRpc[];
171 a0d146ed 2005-07-12 devnull 
172 a0d146ed 2005-07-12 devnull /*
173 a0d146ed 2005-07-12 devnull  * results of parsing and initializing a config file
174 a0d146ed 2005-07-12 devnull  */
175 a0d146ed 2005-07-12 devnull struct Config
176 a0d146ed 2005-07-12 devnull {
177 a0d146ed 2005-07-12 devnull 	char		*index;			/* name of the index to initialize */
178 a0d146ed 2005-07-12 devnull 	int		naparts;		/* arena partitions initialized */
179 a0d146ed 2005-07-12 devnull 	ArenaPart	**aparts;
180 a0d146ed 2005-07-12 devnull 	int		nsects;			/* index sections initialized */
181 a0d146ed 2005-07-12 devnull 	ISect		**sects;
182 a0d146ed 2005-07-12 devnull 	Bloom	*bloom;		/* bloom filter */
183 a0d146ed 2005-07-12 devnull 	u32int	bcmem;
184 a0d146ed 2005-07-12 devnull 	u32int	mem;
185 a0d146ed 2005-07-12 devnull 	u32int	icmem;
186 a0d146ed 2005-07-12 devnull 	int		queuewrites;
187 a0d146ed 2005-07-12 devnull 	char*	haddr;
188 a0d146ed 2005-07-12 devnull 	char*	vaddr;
189 a0d146ed 2005-07-12 devnull 	char*	webroot;
190 a0d146ed 2005-07-12 devnull };
191 a0d146ed 2005-07-12 devnull 
192 a0d146ed 2005-07-12 devnull /*
193 a0d146ed 2005-07-12 devnull  * a Part is the low level interface to files or disks.
194 a0d146ed 2005-07-12 devnull  * there are two main types of partitions
195 a0d146ed 2005-07-12 devnull  *	arena paritions, which some number of arenas, each in a sub-partition.
196 a0d146ed 2005-07-12 devnull  *	index partition, which only have one subpartition.
197 a0d146ed 2005-07-12 devnull  */
198 a0d146ed 2005-07-12 devnull struct Part
199 a0d146ed 2005-07-12 devnull {
200 a0d146ed 2005-07-12 devnull 	int		fd;			/* rock for accessing the disk */
201 a0d146ed 2005-07-12 devnull 	int		mode;
202 a0d146ed 2005-07-12 devnull 	u64int		offset;
203 a0d146ed 2005-07-12 devnull 	u64int		size;			/* size of the partiton */
204 a0d146ed 2005-07-12 devnull 	u32int		blocksize;		/* block size for reads and writes */
205 a0d146ed 2005-07-12 devnull 	u32int		fsblocksize;	/* minimum file system block size */
206 a0d146ed 2005-07-12 devnull 	char		*name;
207 a0d146ed 2005-07-12 devnull 	char		*filename;
208 a0d146ed 2005-07-12 devnull 	Channel		*writechan;		/* chan[dcache.nblock](DBlock*) */
209 a0d146ed 2005-07-12 devnull };
210 a0d146ed 2005-07-12 devnull 
211 a0d146ed 2005-07-12 devnull /*
212 a0d146ed 2005-07-12 devnull  * a cached block from the partition
213 a0d146ed 2005-07-12 devnull  * yuck -- most of this is internal structure for the cache
214 a0d146ed 2005-07-12 devnull  * all other routines should only use data
215 a0d146ed 2005-07-12 devnull  */
216 a0d146ed 2005-07-12 devnull struct DBlock
217 a0d146ed 2005-07-12 devnull {
218 a0d146ed 2005-07-12 devnull 	u8int	*data;
219 a0d146ed 2005-07-12 devnull 
220 a0d146ed 2005-07-12 devnull 	Part	*part;			/* partition in which cached */
221 a0d146ed 2005-07-12 devnull 	u64int	addr;			/* base address on the partition */
222 a0d146ed 2005-07-12 devnull 	u32int	size;			/* amount of data available, not amount allocated; should go away */
223 a0d146ed 2005-07-12 devnull 	u32int	mode;
224 a0d146ed 2005-07-12 devnull 	u32int	dirty;
225 a0d146ed 2005-07-12 devnull 	u32int	dirtying;
226 a0d146ed 2005-07-12 devnull 	DBlock	*next;			/* doubly linked hash chains */
227 a0d146ed 2005-07-12 devnull 	DBlock	*prev;
228 a0d146ed 2005-07-12 devnull 	u32int	heap;			/* index in heap table */
229 a0d146ed 2005-07-12 devnull 	u32int	used;			/* last reference times */
230 a0d146ed 2005-07-12 devnull 	u32int	used2;
231 a0d146ed 2005-07-12 devnull 	u32int	ref;			/* reference count */
232 a0d146ed 2005-07-12 devnull 	RWLock	lock;			/* for access to data only */
233 a0d146ed 2005-07-12 devnull 	Channel	*writedonechan;	
234 a0d146ed 2005-07-12 devnull 	void*	chanbuf[1];		/* buffer for the chan! */
235 a0d146ed 2005-07-12 devnull };
236 a0d146ed 2005-07-12 devnull 
237 a0d146ed 2005-07-12 devnull /*
238 a0d146ed 2005-07-12 devnull  * a cached block from the partition
239 a0d146ed 2005-07-12 devnull  * yuck -- most of this is internal structure for the cache
240 a0d146ed 2005-07-12 devnull  * all other routines should only use data
241 a0d146ed 2005-07-12 devnull  * double yuck -- this is mostly the same as a DBlock
242 a0d146ed 2005-07-12 devnull  */
243 a0d146ed 2005-07-12 devnull struct Lump
244 a0d146ed 2005-07-12 devnull {
245 a0d146ed 2005-07-12 devnull 	Packet	*data;
246 a0d146ed 2005-07-12 devnull 
247 a0d146ed 2005-07-12 devnull 	Part	*part;			/* partition in which cached */
248 a0d146ed 2005-07-12 devnull 	u8int	score[VtScoreSize];	/* score of packet */
249 a0d146ed 2005-07-12 devnull 	u8int	type;			/* type of packet */
250 a0d146ed 2005-07-12 devnull 	u32int	size;			/* amount of data allocated to hold packet */
251 a0d146ed 2005-07-12 devnull 	Lump	*next;			/* doubly linked hash chains */
252 a0d146ed 2005-07-12 devnull 	Lump	*prev;
253 a0d146ed 2005-07-12 devnull 	u32int	heap;			/* index in heap table */
254 a0d146ed 2005-07-12 devnull 	u32int	used;			/* last reference times */
255 a0d146ed 2005-07-12 devnull 	u32int	used2;
256 a0d146ed 2005-07-12 devnull 	u32int	ref;			/* reference count */
257 a0d146ed 2005-07-12 devnull 	QLock	lock;			/* for access to data only */
258 a0d146ed 2005-07-12 devnull };
259 a0d146ed 2005-07-12 devnull 
260 a0d146ed 2005-07-12 devnull /*
261 a0d146ed 2005-07-12 devnull  * mapping between names and address ranges
262 a0d146ed 2005-07-12 devnull  */
263 a0d146ed 2005-07-12 devnull struct AMap
264 a0d146ed 2005-07-12 devnull {
265 a0d146ed 2005-07-12 devnull 	u64int		start;
266 a0d146ed 2005-07-12 devnull 	u64int		stop;
267 a0d146ed 2005-07-12 devnull 	char		name[ANameSize];
268 a0d146ed 2005-07-12 devnull };
269 a0d146ed 2005-07-12 devnull 
270 a0d146ed 2005-07-12 devnull /*
271 a0d146ed 2005-07-12 devnull  * an AMap along with a length
272 a0d146ed 2005-07-12 devnull  */
273 a0d146ed 2005-07-12 devnull struct AMapN
274 a0d146ed 2005-07-12 devnull {
275 a0d146ed 2005-07-12 devnull 	int		n;
276 a0d146ed 2005-07-12 devnull 	AMap		*map;
277 a0d146ed 2005-07-12 devnull };
278 a0d146ed 2005-07-12 devnull 
279 a0d146ed 2005-07-12 devnull /*
280 a0d146ed 2005-07-12 devnull  * an ArenaPart is a partition made up of Arenas
281 a0d146ed 2005-07-12 devnull  * it exists because most os's don't support many partitions,
282 a0d146ed 2005-07-12 devnull  * and we want to have many different Arenas
283 a0d146ed 2005-07-12 devnull  */
284 a0d146ed 2005-07-12 devnull struct ArenaPart
285 a0d146ed 2005-07-12 devnull {
286 a0d146ed 2005-07-12 devnull 	Part		*part;
287 a0d146ed 2005-07-12 devnull 	u64int		size;			/* size of underlying partition, rounded down to blocks */
288 a0d146ed 2005-07-12 devnull 	Arena		**arenas;
289 a0d146ed 2005-07-12 devnull 	u32int		tabbase;		/* base address of arena table on disk */
290 a0d146ed 2005-07-12 devnull 	u32int		tabsize;		/* max. bytes in arena table */
291 a0d146ed 2005-07-12 devnull 
292 a0d146ed 2005-07-12 devnull 	/*
293 a0d146ed 2005-07-12 devnull 	 * fields stored on disk
294 a0d146ed 2005-07-12 devnull 	 */
295 a0d146ed 2005-07-12 devnull 	u32int		version;
296 a0d146ed 2005-07-12 devnull 	u32int		blocksize;		/* "optimal" block size for reads and writes */
297 a0d146ed 2005-07-12 devnull 	u32int		arenabase;		/* base address of first arena */
298 a0d146ed 2005-07-12 devnull 
299 a0d146ed 2005-07-12 devnull 	/*
300 a0d146ed 2005-07-12 devnull 	 * stored in the arena mapping table on disk
301 a0d146ed 2005-07-12 devnull 	 */
302 a0d146ed 2005-07-12 devnull 	AMap		*map;
303 a0d146ed 2005-07-12 devnull 	int		narenas;
304 a0d146ed 2005-07-12 devnull };
305 a0d146ed 2005-07-12 devnull 
306 a0d146ed 2005-07-12 devnull /*
307 a0d146ed 2005-07-12 devnull  * info about one block in the clump info cache
308 a0d146ed 2005-07-12 devnull  */
309 a0d146ed 2005-07-12 devnull struct CIBlock
310 a0d146ed 2005-07-12 devnull {
311 a0d146ed 2005-07-12 devnull 	u32int		block;			/* blocks in the directory */
312 a0d146ed 2005-07-12 devnull 	int		offset;			/* offsets of one clump in the data */
313 a0d146ed 2005-07-12 devnull 	DBlock		*data;
314 a0d146ed 2005-07-12 devnull };
315 a0d146ed 2005-07-12 devnull 
316 a0d146ed 2005-07-12 devnull /*
317 a0d146ed 2005-07-12 devnull  * Statistics kept in the tail. 
318 a0d146ed 2005-07-12 devnull  */
319 a0d146ed 2005-07-12 devnull struct ATailStats
320 a0d146ed 2005-07-12 devnull {
321 a0d146ed 2005-07-12 devnull 	u32int		clumps;		/* number of clumps */
322 a0d146ed 2005-07-12 devnull 	u32int		cclumps;		/* number of compressed clumps */
323 a0d146ed 2005-07-12 devnull 	u64int		used;
324 a0d146ed 2005-07-12 devnull 	u64int		uncsize;
325 a0d146ed 2005-07-12 devnull 	u8int		sealed;
326 a0d146ed 2005-07-12 devnull };
327 a0d146ed 2005-07-12 devnull 
328 a0d146ed 2005-07-12 devnull /*
329 a0d146ed 2005-07-12 devnull  * Arena state - represents a point in the data log
330 a0d146ed 2005-07-12 devnull  */
331 a0d146ed 2005-07-12 devnull struct AState
332 a0d146ed 2005-07-12 devnull {
333 a0d146ed 2005-07-12 devnull 	Arena		*arena;
334 a0d146ed 2005-07-12 devnull 	u64int		aa;			/* index address */
335 a0d146ed 2005-07-12 devnull 	ATailStats		stats;
336 a0d146ed 2005-07-12 devnull };
337 a0d146ed 2005-07-12 devnull 
338 a0d146ed 2005-07-12 devnull /*
339 a0d146ed 2005-07-12 devnull  * an Arena is a log of Clumps, preceeded by an ArenaHeader,
340 a0d146ed 2005-07-12 devnull  * and followed by a Arena, each in one disk block.
341 a0d146ed 2005-07-12 devnull  * struct on disk is not always up to date, but should be self-consistent.
342 a0d146ed 2005-07-12 devnull  * to sync after reboot, follow clumps starting at used until ClumpFreeMagic if found.
343 a0d146ed 2005-07-12 devnull  * <struct name="Arena" type="Arena *">
344 a0d146ed 2005-07-12 devnull  *	<field name="name" val="s->name" type="AName"/>
345 a0d146ed 2005-07-12 devnull  *	<field name="version" val="s->version" type="U32int"/>
346 a0d146ed 2005-07-12 devnull  *	<field name="partition" val="s->part->name" type="AName"/>
347 a0d146ed 2005-07-12 devnull  *	<field name="blocksize" val="s->blocksize" type="U32int"/>
348 a0d146ed 2005-07-12 devnull  *	<field name="start" val="s->base" type="U64int"/>
349 a0d146ed 2005-07-12 devnull  *	<field name="stop" val="s->base+2*s->blocksize" type="U64int"/>
350 a0d146ed 2005-07-12 devnull  *	<field name="created" val="s->ctime" type="U32int"/>
351 a0d146ed 2005-07-12 devnull  *	<field name="modified" val="s->wtime" type="U32int"/>
352 a0d146ed 2005-07-12 devnull  *	<field name="sealed" val="s->sealed" type="Sealed"/>
353 a0d146ed 2005-07-12 devnull  *	<field name="score" val="s->score" type="Score"/>
354 a0d146ed 2005-07-12 devnull  *	<field name="clumps" val="s->clumps" type="U32int"/>
355 a0d146ed 2005-07-12 devnull  *	<field name="compressedclumps" val="s->cclumps" type="U32int"/>
356 a0d146ed 2005-07-12 devnull  *	<field name="data" val="s->uncsize" type="U64int"/>
357 a0d146ed 2005-07-12 devnull  *	<field name="compresseddata" val="s->used - s->clumps * ClumpSize" type="U64int"/>
358 a0d146ed 2005-07-12 devnull  *	<field name="storage" val="s->used + s->clumps * ClumpInfoSize" type="U64int"/>
359 a0d146ed 2005-07-12 devnull  * </struct>
360 a0d146ed 2005-07-12 devnull  */
361 a0d146ed 2005-07-12 devnull struct Arena
362 a0d146ed 2005-07-12 devnull {
363 a0d146ed 2005-07-12 devnull 	QLock		lock;			/* lock for arena fields, writing to disk */
364 a0d146ed 2005-07-12 devnull 	Part		*part;			/* partition in which arena lives */
365 a0d146ed 2005-07-12 devnull 	int		blocksize;		/* size of block to read or write */
366 a0d146ed 2005-07-12 devnull 	u64int		base;			/* base address on disk */
367 a0d146ed 2005-07-12 devnull 	u64int		size;			/* total space in the arena */
368 a0d146ed 2005-07-12 devnull 	u8int		score[VtScoreSize];	/* score of the entire sealed & summed arena */
369 a0d146ed 2005-07-12 devnull 
370 a0d146ed 2005-07-12 devnull 	int		clumpmax;		/* ClumpInfos per block */
371 a0d146ed 2005-07-12 devnull 	AState		mem;
372 a0d146ed 2005-07-12 devnull 	int		inqueue;
373 a0d146ed 2005-07-12 devnull 
374 a0d146ed 2005-07-12 devnull 	/*
375 a0d146ed 2005-07-12 devnull 	 * fields stored on disk
376 a0d146ed 2005-07-12 devnull 	 */
377 a0d146ed 2005-07-12 devnull 	u32int		version;
378 a0d146ed 2005-07-12 devnull 	char		name[ANameSize];	/* text label */
379 a0d146ed 2005-07-12 devnull 	ATailStats		memstats;
380 a0d146ed 2005-07-12 devnull 	ATailStats		diskstats;
381 a0d146ed 2005-07-12 devnull 	u32int		ctime;			/* first time a block was written */
382 a0d146ed 2005-07-12 devnull 	u32int		wtime;			/* last time a block was written */
383 a0d146ed 2005-07-12 devnull 	u32int		clumpmagic;
384 7a400ee9 2007-09-25 rsc 	
385 7a400ee9 2007-09-25 rsc 	ArenaCIG	*cig;
386 7a400ee9 2007-09-25 rsc 	int	ncig;
387 a0d146ed 2005-07-12 devnull };
388 a0d146ed 2005-07-12 devnull 
389 7a400ee9 2007-09-25 rsc struct ArenaCIG
390 7a400ee9 2007-09-25 rsc {
391 7a400ee9 2007-09-25 rsc 	u64int	offset;  // from arena base
392 7a400ee9 2007-09-25 rsc };
393 7a400ee9 2007-09-25 rsc 
394 a0d146ed 2005-07-12 devnull /*
395 a0d146ed 2005-07-12 devnull  * redundant storage of some fields at the beginning of each arena
396 a0d146ed 2005-07-12 devnull  */
397 a0d146ed 2005-07-12 devnull struct ArenaHead
398 a0d146ed 2005-07-12 devnull {
399 a0d146ed 2005-07-12 devnull 	u32int		version;
400 a0d146ed 2005-07-12 devnull 	char		name[ANameSize];
401 a0d146ed 2005-07-12 devnull 	u32int		blocksize;
402 a0d146ed 2005-07-12 devnull 	u64int		size;
403 a0d146ed 2005-07-12 devnull 	u32int		clumpmagic;
404 a0d146ed 2005-07-12 devnull };
405 a0d146ed 2005-07-12 devnull 
406 a0d146ed 2005-07-12 devnull /*
407 a0d146ed 2005-07-12 devnull  * most interesting meta information for a clump.
408 a0d146ed 2005-07-12 devnull  * stored in each clump's header and in the Arena's directory,
409 a0d146ed 2005-07-12 devnull  * stored in reverse order just prior to the arena trailer
410 a0d146ed 2005-07-12 devnull  */
411 a0d146ed 2005-07-12 devnull struct ClumpInfo
412 a0d146ed 2005-07-12 devnull {
413 a0d146ed 2005-07-12 devnull 	u8int		type;
414 a0d146ed 2005-07-12 devnull 	u16int		size;			/* size of disk data, not including header */
415 a0d146ed 2005-07-12 devnull 	u16int		uncsize;		/* size of uncompressed data */
416 a0d146ed 2005-07-12 devnull 	u8int		score[VtScoreSize];	/* score of the uncompressed data only */
417 a0d146ed 2005-07-12 devnull };
418 a0d146ed 2005-07-12 devnull 
419 a0d146ed 2005-07-12 devnull /*
420 a0d146ed 2005-07-12 devnull  * header for an immutable clump of data
421 a0d146ed 2005-07-12 devnull  */
422 a0d146ed 2005-07-12 devnull struct Clump
423 a0d146ed 2005-07-12 devnull {
424 a0d146ed 2005-07-12 devnull 	ClumpInfo	info;
425 a0d146ed 2005-07-12 devnull 	u8int		encoding;
426 a0d146ed 2005-07-12 devnull 	u32int		creator;		/* initial client which wrote the block */
427 a0d146ed 2005-07-12 devnull 	u32int		time;			/* creation at gmt seconds since 1/1/1970 */
428 a0d146ed 2005-07-12 devnull };
429 a0d146ed 2005-07-12 devnull 
430 a0d146ed 2005-07-12 devnull /*
431 a0d146ed 2005-07-12 devnull  * index of all clumps according to their score
432 a0d146ed 2005-07-12 devnull  * this is just a wrapper to tie together the index sections
433 a0d146ed 2005-07-12 devnull  * <struct name="Index" type="Index *">
434 a0d146ed 2005-07-12 devnull  *	<field name="name" val="s->name" type="AName"/>
435 a0d146ed 2005-07-12 devnull  *	<field name="version" val="s->version" type="U32int"/>
436 a0d146ed 2005-07-12 devnull  *	<field name="blocksize" val="s->blocksize" type="U32int"/>
437 a0d146ed 2005-07-12 devnull  *	<field name="tabsize" val="s->tabsize" type="U32int"/>
438 a0d146ed 2005-07-12 devnull  *	<field name="buckets" val="s->buckets" type="U32int"/>
439 a0d146ed 2005-07-12 devnull  *	<field name="buckdiv" val="s->div" type="U32int"/>
440 a0d146ed 2005-07-12 devnull  *	<field name="bitblocks" val="s->div" type="U32int"/>
441 a0d146ed 2005-07-12 devnull  *	<field name="maxdepth" val="s->div" type="U32int"/>
442 a0d146ed 2005-07-12 devnull  *	<field name="bitkeylog" val="s->div" type="U32int"/>
443 a0d146ed 2005-07-12 devnull  *	<field name="bitkeymask" val="s->div" type="U32int"/>
444 a0d146ed 2005-07-12 devnull  *	<array name="sect" val="&s->smap[i]" elems="s->nsects" type="Amap"/>
445 a0d146ed 2005-07-12 devnull  *	<array name="amap" val="&s->amap[i]" elems="s->narenas" type="Amap"/>
446 a0d146ed 2005-07-12 devnull  *	<array name="arena" val="s->arenas[i]" elems="s->narenas" type="Arena"/>
447 a0d146ed 2005-07-12 devnull  * </struct>
448 a0d146ed 2005-07-12 devnull  * <struct name="Amap" type="AMap *">
449 a0d146ed 2005-07-12 devnull  *	<field name="name" val="s->name" type="AName"/>
450 a0d146ed 2005-07-12 devnull  *	<field name="start" val="s->start" type="U64int"/>
451 a0d146ed 2005-07-12 devnull  *	<field name="stop" val="s->stop" type="U64int"/>
452 a0d146ed 2005-07-12 devnull  * </struct>
453 a0d146ed 2005-07-12 devnull  */
454 a0d146ed 2005-07-12 devnull struct Index
455 a0d146ed 2005-07-12 devnull {
456 a0d146ed 2005-07-12 devnull 	u32int		div;			/* divisor for mapping score to bucket */
457 a0d146ed 2005-07-12 devnull 	u32int		buckets;		/* last bucket used in disk hash table */
458 a0d146ed 2005-07-12 devnull 	u32int		blocksize;
459 a0d146ed 2005-07-12 devnull 	u32int		tabsize;		/* max. bytes in index config */
460 a0d146ed 2005-07-12 devnull 
461 a0d146ed 2005-07-12 devnull 	int		mapalloc;		/* first arena to check when adding a lump */
462 a0d146ed 2005-07-12 devnull 	Arena		**arenas;		/* arenas in the mapping */
463 a0d146ed 2005-07-12 devnull 	ISect		**sects;		/* sections which hold the buckets */
464 a0d146ed 2005-07-12 devnull 	Bloom		*bloom;	/* bloom filter */
465 a0d146ed 2005-07-12 devnull 
466 a0d146ed 2005-07-12 devnull 	/*
467 a0d146ed 2005-07-12 devnull 	 * fields stored in config file 
468 a0d146ed 2005-07-12 devnull 	 */
469 a0d146ed 2005-07-12 devnull 	u32int		version;
470 a0d146ed 2005-07-12 devnull 	char		name[ANameSize];	/* text label */
471 a0d146ed 2005-07-12 devnull 	int		nsects;
472 a0d146ed 2005-07-12 devnull 	AMap		*smap;			/* mapping of buckets to index sections */
473 a0d146ed 2005-07-12 devnull 	int		narenas;
474 a0d146ed 2005-07-12 devnull 	AMap		*amap;			/* mapping from index addesses to arenas */
475 45ac814c 2007-10-29 rsc 	
476 45ac814c 2007-10-29 rsc 	QLock	writing;
477 a0d146ed 2005-07-12 devnull };
478 a0d146ed 2005-07-12 devnull 
479 a0d146ed 2005-07-12 devnull /*
480 a0d146ed 2005-07-12 devnull  * one part of the bucket storage for an index.
481 a0d146ed 2005-07-12 devnull  * the index blocks are sequentially allocated
482 a0d146ed 2005-07-12 devnull  * across all of the sections.
483 a0d146ed 2005-07-12 devnull  */
484 a0d146ed 2005-07-12 devnull struct ISect
485 a0d146ed 2005-07-12 devnull {
486 a0d146ed 2005-07-12 devnull 	Part		*part;
487 a0d146ed 2005-07-12 devnull 	int		blocklog;		/* log2(blocksize) */
488 a0d146ed 2005-07-12 devnull 	int		buckmax;		/* max. entries in a index bucket */
489 a0d146ed 2005-07-12 devnull 	u32int		tabbase;		/* base address of index config table on disk */
490 a0d146ed 2005-07-12 devnull 	u32int		tabsize;		/* max. bytes in index config */
491 a0d146ed 2005-07-12 devnull 	Channel	*writechan;
492 a0d146ed 2005-07-12 devnull 	Channel	*writedonechan;
493 28b49df3 2006-07-18 devnull 	void		*ig;		/* used by buildindex only */
494 28b49df3 2006-07-18 devnull 	int		ng;
495 a0d146ed 2005-07-12 devnull 
496 a0d146ed 2005-07-12 devnull 	/*
497 a0d146ed 2005-07-12 devnull 	 * fields stored on disk
498 a0d146ed 2005-07-12 devnull 	 */
499 a0d146ed 2005-07-12 devnull 	u32int		version;
500 a0d146ed 2005-07-12 devnull 	u32int		bucketmagic;
501 a0d146ed 2005-07-12 devnull 	char		name[ANameSize];	/* text label */
502 a0d146ed 2005-07-12 devnull 	char		index[ANameSize];	/* index owning the section */
503 a0d146ed 2005-07-12 devnull 	u32int		blocksize;		/* size of hash buckets in index */
504 a0d146ed 2005-07-12 devnull 	u32int		blockbase;		/* address of start of on disk index table */
505 a0d146ed 2005-07-12 devnull 	u32int		blocks;			/* total blocks on disk; some may be unused */
506 a0d146ed 2005-07-12 devnull 	u32int		start;			/* first bucket in this section */
507 a0d146ed 2005-07-12 devnull 	u32int		stop;			/* limit of buckets in this section */
508 a0d146ed 2005-07-12 devnull };
509 a0d146ed 2005-07-12 devnull 
510 a0d146ed 2005-07-12 devnull /*
511 a0d146ed 2005-07-12 devnull  * externally interesting part of an IEntry
512 a0d146ed 2005-07-12 devnull  */
513 a0d146ed 2005-07-12 devnull struct IAddr
514 a0d146ed 2005-07-12 devnull {
515 a0d146ed 2005-07-12 devnull 	u64int		addr;
516 a0d146ed 2005-07-12 devnull 	u16int		size;			/* uncompressed size */
517 a0d146ed 2005-07-12 devnull 	u8int		type;			/* type of block */
518 a0d146ed 2005-07-12 devnull 	u8int		blocks;			/* arena io quanta for Clump + data */
519 a0d146ed 2005-07-12 devnull };
520 a0d146ed 2005-07-12 devnull 
521 a0d146ed 2005-07-12 devnull /*
522 a0d146ed 2005-07-12 devnull  * entries in the index
523 a0d146ed 2005-07-12 devnull  * kept in IBuckets in the disk index table,
524 a0d146ed 2005-07-12 devnull  * cached in the memory ICache.
525 a0d146ed 2005-07-12 devnull  */
526 a0d146ed 2005-07-12 devnull struct IEntry
527 a0d146ed 2005-07-12 devnull {
528 7a400ee9 2007-09-25 rsc 	/* on disk data - 32 bytes*/
529 7a400ee9 2007-09-25 rsc 	u8int	score[VtScoreSize];
530 7a400ee9 2007-09-25 rsc 	IAddr	ia;
531 7a400ee9 2007-09-25 rsc 	
532 7a400ee9 2007-09-25 rsc 	IEntry	*nexthash;
533 7a400ee9 2007-09-25 rsc 	IEntry	*nextdirty;
534 7a400ee9 2007-09-25 rsc 	IEntry	*next;
535 7a400ee9 2007-09-25 rsc 	IEntry	*prev;
536 7a400ee9 2007-09-25 rsc 	u8int	state;
537 a0d146ed 2005-07-12 devnull };
538 7a400ee9 2007-09-25 rsc enum {
539 7a400ee9 2007-09-25 rsc 	IEClean = 0,
540 7a400ee9 2007-09-25 rsc 	IEDirty = 1,
541 7a400ee9 2007-09-25 rsc 	IESummary = 2,
542 7a400ee9 2007-09-25 rsc };
543 a0d146ed 2005-07-12 devnull 
544 a0d146ed 2005-07-12 devnull /*
545 a0d146ed 2005-07-12 devnull  * buckets in the on disk index table
546 a0d146ed 2005-07-12 devnull  */
547 a0d146ed 2005-07-12 devnull struct IBucket
548 a0d146ed 2005-07-12 devnull {
549 a0d146ed 2005-07-12 devnull 	u16int		n;			/* number of active indices */
550 a0d146ed 2005-07-12 devnull 	u32int		buck;		/* used by buildindex/checkindex only */
551 a0d146ed 2005-07-12 devnull 	u8int		*data;
552 a0d146ed 2005-07-12 devnull };
553 a0d146ed 2005-07-12 devnull 
554 a0d146ed 2005-07-12 devnull /*
555 a0d146ed 2005-07-12 devnull  * temporary buffers used by individual threads
556 a0d146ed 2005-07-12 devnull  */
557 a0d146ed 2005-07-12 devnull struct ZBlock
558 a0d146ed 2005-07-12 devnull {
559 a0d146ed 2005-07-12 devnull 	u32int		len;
560 a0d146ed 2005-07-12 devnull 	u32int		_size;
561 a0d146ed 2005-07-12 devnull 	u8int		*data;
562 a0d146ed 2005-07-12 devnull 	u8int		*free;
563 a0d146ed 2005-07-12 devnull };
564 a0d146ed 2005-07-12 devnull 
565 a0d146ed 2005-07-12 devnull /*
566 a0d146ed 2005-07-12 devnull  * simple input buffer for a '\0' terminated text file
567 a0d146ed 2005-07-12 devnull  */
568 a0d146ed 2005-07-12 devnull struct IFile
569 a0d146ed 2005-07-12 devnull {
570 a0d146ed 2005-07-12 devnull 	char		*name;				/* name of the file */
571 a0d146ed 2005-07-12 devnull 	ZBlock		*b;				/* entire contents of file */
572 a0d146ed 2005-07-12 devnull 	u32int		pos;				/* current position in the file */
573 a0d146ed 2005-07-12 devnull };
574 a0d146ed 2005-07-12 devnull 
575 a0d146ed 2005-07-12 devnull struct Statdesc
576 a0d146ed 2005-07-12 devnull {
577 a0d146ed 2005-07-12 devnull 	char *name;
578 a0d146ed 2005-07-12 devnull 	ulong max;
579 a0d146ed 2005-07-12 devnull };
580 a0d146ed 2005-07-12 devnull 
581 a0d146ed 2005-07-12 devnull /* keep in sync with stats.c:/statdesc and httpd.c:/graphname*/
582 a0d146ed 2005-07-12 devnull enum
583 a0d146ed 2005-07-12 devnull {
584 a0d146ed 2005-07-12 devnull 	StatRpcTotal,
585 a0d146ed 2005-07-12 devnull 	StatRpcRead,
586 a0d146ed 2005-07-12 devnull 	StatRpcReadOk,
587 a0d146ed 2005-07-12 devnull 	StatRpcReadFail,
588 a0d146ed 2005-07-12 devnull 	StatRpcReadBytes,
589 a0d146ed 2005-07-12 devnull 	StatRpcReadTime,
590 a0d146ed 2005-07-12 devnull 	StatRpcReadCached,
591 a0d146ed 2005-07-12 devnull 	StatRpcReadCachedTime,
592 a0d146ed 2005-07-12 devnull 	StatRpcReadUncached,
593 a0d146ed 2005-07-12 devnull 	StatRpcReadUncachedTime,
594 a0d146ed 2005-07-12 devnull 	StatRpcWrite,
595 a0d146ed 2005-07-12 devnull 	StatRpcWriteNew,
596 a0d146ed 2005-07-12 devnull 	StatRpcWriteOld,
597 a0d146ed 2005-07-12 devnull 	StatRpcWriteFail,
598 a0d146ed 2005-07-12 devnull 	StatRpcWriteBytes,
599 a0d146ed 2005-07-12 devnull 	StatRpcWriteTime,
600 a0d146ed 2005-07-12 devnull 	StatRpcWriteNewTime,
601 a0d146ed 2005-07-12 devnull 	StatRpcWriteOldTime,
602 a0d146ed 2005-07-12 devnull 
603 a0d146ed 2005-07-12 devnull 	StatLcacheHit,
604 a0d146ed 2005-07-12 devnull 	StatLcacheMiss,
605 a0d146ed 2005-07-12 devnull 	StatLcacheRead,
606 a0d146ed 2005-07-12 devnull 	StatLcacheWrite,
607 a0d146ed 2005-07-12 devnull 	StatLcacheSize,
608 a0d146ed 2005-07-12 devnull 	StatLcacheStall,
609 a0d146ed 2005-07-12 devnull 	StatLcacheReadTime,
610 a0d146ed 2005-07-12 devnull 
611 a0d146ed 2005-07-12 devnull 	StatDcacheHit,
612 a0d146ed 2005-07-12 devnull 	StatDcacheMiss,
613 a0d146ed 2005-07-12 devnull 	StatDcacheLookup,
614 a0d146ed 2005-07-12 devnull 	StatDcacheRead,
615 a0d146ed 2005-07-12 devnull 	StatDcacheWrite,
616 a0d146ed 2005-07-12 devnull 	StatDcacheDirty,
617 a0d146ed 2005-07-12 devnull 	StatDcacheSize,
618 a0d146ed 2005-07-12 devnull 	StatDcacheFlush,
619 a0d146ed 2005-07-12 devnull 	StatDcacheStall,
620 a0d146ed 2005-07-12 devnull 	StatDcacheLookupTime,
621 a0d146ed 2005-07-12 devnull 
622 a0d146ed 2005-07-12 devnull 	StatDblockStall,
623 a0d146ed 2005-07-12 devnull 	StatLumpStall,
624 a0d146ed 2005-07-12 devnull 
625 a0d146ed 2005-07-12 devnull 	StatIcacheHit,
626 a0d146ed 2005-07-12 devnull 	StatIcacheMiss,
627 a0d146ed 2005-07-12 devnull 	StatIcacheRead,
628 a0d146ed 2005-07-12 devnull 	StatIcacheWrite,
629 a0d146ed 2005-07-12 devnull 	StatIcacheFill,
630 a0d146ed 2005-07-12 devnull 	StatIcachePrefetch,
631 a0d146ed 2005-07-12 devnull 	StatIcacheDirty,
632 a0d146ed 2005-07-12 devnull 	StatIcacheSize,
633 a0d146ed 2005-07-12 devnull 	StatIcacheFlush,
634 a0d146ed 2005-07-12 devnull 	StatIcacheStall,
635 a0d146ed 2005-07-12 devnull 	StatIcacheReadTime,
636 7a400ee9 2007-09-25 rsc 	StatIcacheLookup,
637 7a400ee9 2007-09-25 rsc 	StatScacheHit,
638 7a400ee9 2007-09-25 rsc 	StatScachePrefetch,
639 a0d146ed 2005-07-12 devnull 
640 a0d146ed 2005-07-12 devnull 	StatBloomHit,
641 a0d146ed 2005-07-12 devnull 	StatBloomMiss,
642 a0d146ed 2005-07-12 devnull 	StatBloomFalseMiss,
643 a0d146ed 2005-07-12 devnull 	StatBloomLookup,
644 a0d146ed 2005-07-12 devnull 	StatBloomOnes,
645 a0d146ed 2005-07-12 devnull 	StatBloomBits,
646 a0d146ed 2005-07-12 devnull 
647 a0d146ed 2005-07-12 devnull 	StatApartRead,
648 a0d146ed 2005-07-12 devnull 	StatApartReadBytes,
649 a0d146ed 2005-07-12 devnull 	StatApartWrite,
650 a0d146ed 2005-07-12 devnull 	StatApartWriteBytes,
651 a0d146ed 2005-07-12 devnull 
652 a0d146ed 2005-07-12 devnull 	StatIsectRead,
653 a0d146ed 2005-07-12 devnull 	StatIsectReadBytes,
654 a0d146ed 2005-07-12 devnull 	StatIsectWrite,
655 a0d146ed 2005-07-12 devnull 	StatIsectWriteBytes,
656 a0d146ed 2005-07-12 devnull 
657 a0d146ed 2005-07-12 devnull 	StatSumRead,
658 a0d146ed 2005-07-12 devnull 	StatSumReadBytes,
659 7a400ee9 2007-09-25 rsc 	
660 7a400ee9 2007-09-25 rsc 	StatCigLoad,
661 7a400ee9 2007-09-25 rsc 	StatCigLoadTime,
662 a0d146ed 2005-07-12 devnull 
663 a0d146ed 2005-07-12 devnull 	NStat
664 a0d146ed 2005-07-12 devnull };
665 a0d146ed 2005-07-12 devnull 
666 a0d146ed 2005-07-12 devnull extern Statdesc statdesc[NStat];
667 a0d146ed 2005-07-12 devnull 
668 a0d146ed 2005-07-12 devnull /*
669 a0d146ed 2005-07-12 devnull  * statistics about the operation of the server
670 a0d146ed 2005-07-12 devnull  * mainly for performance monitoring and profiling.
671 a0d146ed 2005-07-12 devnull  */
672 a0d146ed 2005-07-12 devnull struct Stats
673 a0d146ed 2005-07-12 devnull {
674 a0d146ed 2005-07-12 devnull 	ulong		now;
675 a0d146ed 2005-07-12 devnull 	ulong		n[NStat];
676 a0d146ed 2005-07-12 devnull };
677 a0d146ed 2005-07-12 devnull 
678 a0d146ed 2005-07-12 devnull struct Statbin
679 a0d146ed 2005-07-12 devnull {
680 a0d146ed 2005-07-12 devnull 	uint nsamp;
681 a0d146ed 2005-07-12 devnull 	uint min;
682 a0d146ed 2005-07-12 devnull 	uint max;
683 a0d146ed 2005-07-12 devnull 	uint avg;
684 a0d146ed 2005-07-12 devnull };
685 a0d146ed 2005-07-12 devnull 
686 a0d146ed 2005-07-12 devnull struct Graph
687 a0d146ed 2005-07-12 devnull {
688 a0d146ed 2005-07-12 devnull 	long (*fn)(Stats*, Stats*, void*);
689 a0d146ed 2005-07-12 devnull 	void *arg;
690 a0d146ed 2005-07-12 devnull 	long t0;
691 a0d146ed 2005-07-12 devnull 	long t1;
692 a0d146ed 2005-07-12 devnull 	long min;
693 a0d146ed 2005-07-12 devnull 	long max;
694 a0d146ed 2005-07-12 devnull 	long wid;
695 a0d146ed 2005-07-12 devnull 	long ht;
696 a0d146ed 2005-07-12 devnull 	int fill;
697 a0d146ed 2005-07-12 devnull };
698 a0d146ed 2005-07-12 devnull 
699 a0d146ed 2005-07-12 devnull /*
700 a0d146ed 2005-07-12 devnull  * for kicking background processes that run one round after another after another
701 a0d146ed 2005-07-12 devnull  */
702 a0d146ed 2005-07-12 devnull struct Round
703 a0d146ed 2005-07-12 devnull {
704 a0d146ed 2005-07-12 devnull 	QLock	lock;
705 a0d146ed 2005-07-12 devnull 	Rendez	start;
706 a0d146ed 2005-07-12 devnull 	Rendez	finish;
707 a0d146ed 2005-07-12 devnull 	Rendez	delaywait;
708 a0d146ed 2005-07-12 devnull 	int		delaytime;
709 a0d146ed 2005-07-12 devnull 	int		delaykick;
710 a0d146ed 2005-07-12 devnull 	char*	name;
711 a0d146ed 2005-07-12 devnull 	int		last;
712 a0d146ed 2005-07-12 devnull 	int		current;
713 a0d146ed 2005-07-12 devnull 	int		next;
714 a0d146ed 2005-07-12 devnull 	int		doanother;
715 a0d146ed 2005-07-12 devnull };
716 a0d146ed 2005-07-12 devnull 
717 a0d146ed 2005-07-12 devnull /*
718 a0d146ed 2005-07-12 devnull  * Bloom filter of stored block hashes
719 a0d146ed 2005-07-12 devnull  */
720 a0d146ed 2005-07-12 devnull struct Bloom
721 a0d146ed 2005-07-12 devnull {
722 a0d146ed 2005-07-12 devnull 	RWLock lk;		/* protects nhash, nbits, tab, mb */
723 a0d146ed 2005-07-12 devnull 	QLock mod;		/* one marker at a time, protects nb */
724 a0d146ed 2005-07-12 devnull 	int nhash;
725 a0d146ed 2005-07-12 devnull 	ulong size;		/* bytes in tab */
726 27d28098 2007-04-21 devnull 	ulong bitmask;		/* to produce bit index */
727 a0d146ed 2005-07-12 devnull 	u8int *data;
728 a0d146ed 2005-07-12 devnull 	Part *part;
729 a0d146ed 2005-07-12 devnull 	Channel *writechan;
730 a0d146ed 2005-07-12 devnull 	Channel *writedonechan;
731 a0d146ed 2005-07-12 devnull };
732 a0d146ed 2005-07-12 devnull 
733 a0d146ed 2005-07-12 devnull extern	Index		*mainindex;
734 a0d146ed 2005-07-12 devnull extern	u32int		maxblocksize;		/* max. block size used by any partition */
735 a0d146ed 2005-07-12 devnull extern	int		paranoid;		/* should verify hashes on disk read */
736 a0d146ed 2005-07-12 devnull extern	int		queuewrites;		/* put all lump writes on a queue and finish later */
737 a0d146ed 2005-07-12 devnull extern	int		readonly;		/* only allowed to read the disk data */
738 a0d146ed 2005-07-12 devnull extern	Stats		stats;
739 a0d146ed 2005-07-12 devnull extern	u8int		zeroscore[VtScoreSize];
740 a0d146ed 2005-07-12 devnull extern	int		compressblocks;
741 a0d146ed 2005-07-12 devnull extern	int		writestodevnull;	/* dangerous - for performance debugging */
742 a0d146ed 2005-07-12 devnull extern	int		collectstats;
743 a0d146ed 2005-07-12 devnull extern	QLock	memdrawlock;
744 a0d146ed 2005-07-12 devnull extern	int		icachesleeptime;
745 28b49df3 2006-07-18 devnull extern	int		minicachesleeptime;
746 a0d146ed 2005-07-12 devnull extern	int		arenasumsleeptime;
747 28b49df3 2006-07-18 devnull extern	int		manualscheduling;
748 28b49df3 2006-07-18 devnull extern	int		l0quantum;
749 28b49df3 2006-07-18 devnull extern	int		l1quantum;
750 28b49df3 2006-07-18 devnull extern	int		ignorebloom;
751 28b49df3 2006-07-18 devnull extern	int		icacheprefetch;
752 28b49df3 2006-07-18 devnull extern	int		syncwrites;
753 a0d146ed 2005-07-12 devnull 
754 28b49df3 2006-07-18 devnull extern	Stats	*stathist;
755 28b49df3 2006-07-18 devnull extern	int	nstathist;
756 28b49df3 2006-07-18 devnull extern	ulong	stattime;
757 28b49df3 2006-07-18 devnull 
758 a0d146ed 2005-07-12 devnull #ifndef PLAN9PORT
759 a0d146ed 2005-07-12 devnull #pragma varargck type "V" uchar*
760 a0d146ed 2005-07-12 devnull #define ODIRECT 0
761 a0d146ed 2005-07-12 devnull #endif
762 ef609927 2007-05-03 devnull