plan 9 kernel history: overview | file list | diff list

1999/1001/port/thwack.h (diff list | history)

1999/1001/sys/src/9/port/thwack.h:12,22 – 1999/1007/sys/src/9/port/thwack.h:12,27 (short | long)
Remove MaxLen. Add MaxFastLen, BigLen*, Max*Decode. Change Thwack.slot to int. Remove Unthwack bit buffer.
rsc Fri Mar 4 12:44:25 2005
1999/1001    
	HashSize	= 1<<HashLog, 
	HashMask	= HashSize - 1, 
 
	MaxLen		= 8,
1999/1007    
	MaxFastLen	= 9, 
	BigLenCode	= 0xf4,		/* minimum code for large lenth encoding */ 
	BigLenBase	= 4,		/* starting items to encode for big lens */ 
	BigLenBits	= 8,
1999/1001    
	MaxOff		= 8, 
	OffBase		= 6, 
 
	MinDecode	= 9,		/* minimum bits to decode a match or lit */
1999/1007    
	MaxOffDecode	= 4 + MaxOff + OffBase - 1, 
	MaxLenDecode	= 16,
1999/1001    
 
	EWinBlocks	= 32,		/* blocks held in encoder window */ 
	DWinBlocks	= 32,		/* blocks held in decoder window */
1999/1001/sys/src/9/port/thwack.h:44,50 – 1999/1007/sys/src/9/port/thwack.h:49,55
1999/1001    
	uchar		*dst;		/* output buffer */ 
	uchar		*dmax; 
 
	ulong		slot;		/* next block to use */
1999/1007    
	int		slot;		/* next block to use */
1999/1001    
	ThwBlock	blocks[EWinBlocks]; 
	ushort		hash[EWinBlocks][HashSize]; 
	uchar		data[EWinBlocks][ThwMaxBlock];
1999/1001/sys/src/9/port/thwack.h:59,69 – 1999/1007/sys/src/9/port/thwack.h:64,69
1999/1001    
 
struct Unthwack 
{ 
	ulong		nbits;		/* input bit buffer */ 
	ulong		bits; 
	uchar		*src;		/* input buffer */ 
	uchar		*smax; 
                 
	int		slot;		/* next block to use */ 
	UnthwBlock	blocks[DWinBlocks]; 
	uchar		data[DWinBlocks][ThwMaxBlock];
1999/1007/sys/src/9/port/thwack.h:5,14 – 1999/1022/sys/src/9/port/thwack.h:5,15 (short | long)
Increase HashLog to 12. Add Thwstats. Reduce MinDecode to 8. Format edit. Remove Thwack bit buffer.
rsc Fri Mar 4 12:44:25 2005
1999/1001    
 
enum 
{
1999/1022    
	ThwStats	= 8,
1999/1001    
	ThwMaxBlock	= 1600,		/* max size of compressible block */ 
 
	MinMatch	= 3,		/* shortest match possible */ 
	HashLog		= 10,
1999/1022    
	HashLog		= 12,
1999/1001    
	HashSize	= 1<<HashLog, 
	HashMask	= HashSize - 1,
1999/1007/sys/src/9/port/thwack.h:19,25 – 1999/1022/sys/src/9/port/thwack.h:20,26
1999/1001    
	MaxOff		= 8, 
	OffBase		= 6, 
 
	MinDecode	= 9,		/* minimum bits to decode a match or lit */
1999/1022    
	MinDecode	= 8,		/* minimum bits to decode a match or lit; >= 8 */
1999/1007    
	MaxOffDecode	= 4 + MaxOff + OffBase - 1, 
	MaxLenDecode	= 16,
1999/1001    
1999/1007/sys/src/9/port/thwack.h:28,34 – 1999/1022/sys/src/9/port/thwack.h:29,35
1999/1001    
	CompBlocks	= 5,		/* max blocks used to encode data */ 
 
	MaxSeqMask	= 8,		/* number of bits in coding block mask */ 
	MaxSeqStart	= 256,		/* max offset of initial coding block */
1999/1022    
	MaxSeqStart	= 256		/* max offset of initial coding block */
1999/1001    
}; 
 
struct ThwBlock
1999/1007/sys/src/9/port/thwack.h:44,54 – 1999/1022/sys/src/9/port/thwack.h:45,50
1999/1001    
 
struct Thwack 
{ 
	ulong		nbits;		/* output bit buffer */ 
	ulong		bits; 
	uchar		*dst;		/* output buffer */ 
	uchar		*dmax; 
                 
1999/1007    
	int		slot;		/* next block to use */
1999/1001    
	ThwBlock	blocks[EWinBlocks]; 
	ushort		hash[EWinBlocks][HashSize];
1999/1007/sys/src/9/port/thwack.h:71,76 – 1999/1022/sys/src/9/port/thwack.h:67,72
1999/1001    
 
void	thwackinit(Thwack*); 
void	unthwackinit(Unthwack*); 
int	thwack(Thwack*, uchar *dst, uchar *src, int nsrc, ulong seq);
1999/1022    
int	thwack(Thwack*, uchar *dst, uchar *src, int nsrc, ulong seq, ulong stats[ThwStats]);
1999/1001    
void	thwackack(Thwack*, ulong seq, ulong mask); 
int	unthwack(Unthwack*, uchar *dst, int ndst, uchar *src, int nsrc, ulong seq);
1999/1022/sys/src/9/port/thwack.h:8,32 – 1999/1111/sys/src/9/port/thwack.h:8,27 (short | long)
Remove unused or hidden parameters. Add unthwackadd.
rsc Fri Mar 4 12:44:25 2005
1999/1022    
	ThwStats	= 8,
1999/1001    
	ThwMaxBlock	= 1600,		/* max size of compressible block */ 
 
	MinMatch	= 3,		/* shortest match possible */
1999/1022    
	HashLog		= 12,
1999/1001    
	HashSize	= 1<<HashLog, 
	HashMask	= HashSize - 1,
1999/1007    
	MaxFastLen	= 9, 
	BigLenCode	= 0xf4,		/* minimum code for large lenth encoding */ 
	BigLenBase	= 4,		/* starting items to encode for big lens */ 
	BigLenBits	= 8,
1999/1111    
	MinMatch	= 3,		/* shortest match possible */
1999/1001    
	MaxOff		= 8, 
	OffBase		= 6,
1999/1022    
	MinDecode	= 8,		/* minimum bits to decode a match or lit; >= 8 */
1999/1007    
	MaxOffDecode	= 4 + MaxOff + OffBase - 1, 
	MaxLenDecode	= 16,
1999/1001    
 
	EWinBlocks	= 32,		/* blocks held in encoder window */ 
	DWinBlocks	= 32,		/* blocks held in decoder window */ 
	CompBlocks	= 5,		/* max blocks used to encode data */
1999/1111    
	CompBlocks	= 10,		/* max blocks used to encode data */
1999/1001    
 
	MaxSeqMask	= 8,		/* number of bits in coding block mask */
1999/1022    
	MaxSeqStart	= 256		/* max offset of initial coding block */
1999/1022/sys/src/9/port/thwack.h:70,72 – 1999/1111/sys/src/9/port/thwack.h:65,68
1999/1022    
int	thwack(Thwack*, uchar *dst, uchar *src, int nsrc, ulong seq, ulong stats[ThwStats]);
1999/1001    
void	thwackack(Thwack*, ulong seq, ulong mask); 
int	unthwack(Unthwack*, uchar *dst, int ndst, uchar *src, int nsrc, ulong seq);
1999/1111    
int	unthwackadd(Unthwack*, uchar *src, int nsrc, ulong seq);
1999/1111/sys/src/9/port/thwack.h:65,68 – 1999/1116/sys/src/9/port/thwack.h:65,67 (short | long)
Remove unthwackadd.
rsc Fri Mar 4 12:44:25 2005
1999/1022    
int	thwack(Thwack*, uchar *dst, uchar *src, int nsrc, ulong seq, ulong stats[ThwStats]);
1999/1001    
void	thwackack(Thwack*, ulong seq, ulong mask); 
int	unthwack(Unthwack*, uchar *dst, int ndst, uchar *src, int nsrc, ulong seq);
1999/1111    
int	unthwackadd(Unthwack*, uchar *src, int nsrc, ulong seq);
1999/1116/sys/src/9/port/thwack.h:19,25 – 2001/0213/sys/src/9/port/thwack.h:19,25 (short | long)
Decrease EWinBlocks.
rsc Fri Mar 4 12:44:25 2005
1999/1001    
1999/1022    
	MinDecode	= 8,		/* minimum bits to decode a match or lit; >= 8 */
1999/1001    
 
	EWinBlocks	= 32,		/* blocks held in encoder window */
2001/0213    
	EWinBlocks	= 22,		/* blocks held in encoder window */
1999/1001    
	DWinBlocks	= 32,		/* blocks held in decoder window */
1999/1111    
	CompBlocks	= 10,		/* max blocks used to encode data */
1999/1001    
2001/0213/sys/src/9/port/thwack.h:65,67 – 2001/0214/sys/src/9/port/thwack.h:65,68 (short | long)
Add unthwackstate.
rsc Fri Mar 4 12:44:25 2005
1999/1022    
int	thwack(Thwack*, uchar *dst, uchar *src, int nsrc, ulong seq, ulong stats[ThwStats]);
1999/1001    
void	thwackack(Thwack*, ulong seq, ulong mask); 
int	unthwack(Unthwack*, uchar *dst, int ndst, uchar *src, int nsrc, ulong seq);
2001/0214    
ulong	unthwackstate(Unthwack *ut, uchar *mask);
2001/0214/sys/src/9/port/thwack.h:19,25 – 2001/0527/sys/src/9/port/thwack.h:19,25 (short | long)
9P2000 conversion XXX. Lost changes. Increase EWinBlocks; remove unthwackstate.
rsc Fri Mar 4 12:44:25 2005
1999/1001    
1999/1022    
	MinDecode	= 8,		/* minimum bits to decode a match or lit; >= 8 */
1999/1001    
2001/0213    
	EWinBlocks	= 22,		/* blocks held in encoder window */
2001/0527    
	EWinBlocks	= 32,		/* blocks held in encoder window */
1999/1001    
	DWinBlocks	= 32,		/* blocks held in decoder window */
1999/1111    
	CompBlocks	= 10,		/* max blocks used to encode data */
1999/1001    
2001/0214/sys/src/9/port/thwack.h:65,68 – 2001/0527/sys/src/9/port/thwack.h:65,67
1999/1022    
int	thwack(Thwack*, uchar *dst, uchar *src, int nsrc, ulong seq, ulong stats[ThwStats]);
1999/1001    
void	thwackack(Thwack*, ulong seq, ulong mask); 
int	unthwack(Unthwack*, uchar *dst, int ndst, uchar *src, int nsrc, ulong seq);
2001/0214    
ulong	unthwackstate(Unthwack *ut, uchar *mask);
2001/0527/sys/src/9/port/thwack.h:19,25 – 2001/1011/sys/src/9/port/thwack.h:19,25 (short | long)
Add changes lost by 9P2000.
rsc Fri Mar 4 12:44:25 2005
1999/1001    
1999/1022    
	MinDecode	= 8,		/* minimum bits to decode a match or lit; >= 8 */
1999/1001    
2001/0527    
	EWinBlocks	= 32,		/* blocks held in encoder window */
2001/1011    
	EWinBlocks	= 22,		/* blocks held in encoder window */
1999/1001    
	DWinBlocks	= 32,		/* blocks held in decoder window */
1999/1111    
	CompBlocks	= 10,		/* max blocks used to encode data */
1999/1001    
2001/0527/sys/src/9/port/thwack.h:65,67 – 2001/1011/sys/src/9/port/thwack.h:65,68
1999/1022    
int	thwack(Thwack*, uchar *dst, uchar *src, int nsrc, ulong seq, ulong stats[ThwStats]);
1999/1001    
void	thwackack(Thwack*, ulong seq, ulong mask); 
int	unthwack(Unthwack*, uchar *dst, int ndst, uchar *src, int nsrc, ulong seq);
2001/1011    
ulong	unthwackstate(Unthwack *ut, uchar *mask);


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Plan 9 distribution
comments to russ cox (rsc@swtch.com)