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Lay the groundwork for on-demand dictionary expansion.

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This commit is contained in:
Daniel C. Sobral 2000-05-05 02:06:38 +00:00
parent c793874313
commit ff7e939c43
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=60014
3 changed files with 48 additions and 5 deletions
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28
sys/boot/ficl/dict.c
View File

@ -29,6 +29,11 @@
#include <string.h>
#include "ficl.h"
/* Dictionary on-demand resizing control variables */
unsigned int dictThreshold;
unsigned int dictIncrease;
static char *dictCopyName(FICL_DICT *pDict, STRINGINFO si);
/**************************************************************************
@ -347,12 +352,14 @@ FICL_DICT *dictCreateHashed(unsigned nCells, unsigned nHash)
FICL_DICT *pDict;
size_t nAlloc;
nAlloc = sizeof (FICL_DICT) + nCells * sizeof (CELL)
+ sizeof (FICL_HASH) + (nHash - 1) * sizeof (FICL_WORD *);
nAlloc = sizeof (FICL_HASH) + nCells * sizeof (CELL)
+ (nHash - 1) * sizeof (FICL_WORD *);
pDict = ficlMalloc(nAlloc);
pDict = ficlMalloc(sizeof (FICL_DICT));
assert(pDict);
memset(pDict, 0, sizeof (FICL_DICT));
pDict->dict = ficlMalloc(nAlloc);
assert(pDict->dict);
pDict->size = nCells;
dictEmpty(pDict, nHash);
return pDict;
@ -701,4 +708,19 @@ void hashReset(FICL_HASH *pHash)
return;
}
/**************************************************************************
d i c t C h e c k T h r e s h o l d
** Verify if an increase in the dictionary size is warranted, and do it if
** so.
**************************************************************************/
void dictCheckThreshold(FICL_DICT* dp)
{
if( dictCellsAvail(dp) < dictThreshold ) {
dp->dict = ficlMalloc( dictIncrease * sizeof (CELL) );
assert(dp->dict);
dp->here = dp->dict;
dp->size = dictIncrease;
}
}

8
sys/boot/ficl/ficl.h
View File

@ -666,7 +666,7 @@ typedef struct ficl_dict
FICL_HASH *pSearch[FICL_DEFAULT_VOCS];
int nLists;
unsigned size; /* Number of cells in dict (total)*/
CELL dict[1]; /* Base of dictionary memory */
CELL *dict; /* Base of dictionary memory */
} FICL_DICT;
void *alignPtr(void *ptr);
@ -828,6 +828,12 @@ void ficlCompileSoftCore(FICL_VM *pVM);
void constantParen(FICL_VM *pVM);
void twoConstParen(FICL_VM *pVM);
/*
** Dictionary on-demand resizing
*/
extern unsigned int dictThreshold;
extern unsigned int dictIncrease;
/*
** So we can more easily debug...
*/

17
sys/boot/ficl/words.c
View File

@ -72,7 +72,6 @@ static FICL_WORD *pUnLinkParen = NULL;
static int nLocals = 0;
#endif
/*
** C O N T R O L S T R U C T U R E B U I L D E R S
**
@ -431,6 +430,8 @@ static void colon(FICL_VM *pVM)
FICL_DICT *dp = ficlGetDict();
STRINGINFO si = vmGetWord(pVM);
dictCheckThreshold(dp);
pVM->state = COMPILE;
markControlTag(pVM, colonTag);
dictAppendWord2(dp, si, colonParen, FW_DEFAULT | FW_SMUDGE);
@ -4472,6 +4473,18 @@ static void dnegate(FICL_VM *pVM)
return;
}
/******************* Increase dictionary size on-demand ******************/
static void ficlDictThreshold(FICL_VM *pVM)
{
stackPushPtr(pVM->pStack, &dictThreshold);
}
static void ficlDictIncrease(FICL_VM *pVM)
{
stackPushPtr(pVM->pStack, &dictIncrease);
}
/************************* freebsd added trace ***************************/
#ifdef FICL_TRACE
@ -4658,6 +4671,8 @@ void ficlCompileCore(FICL_DICT *dp)
dictAppendWord(dp, "ms", ms, FW_DEFAULT);
dictAppendWord(dp, "seconds", pseconds, FW_DEFAULT);
dictAppendWord(dp, "heap?", freeHeap, FW_DEFAULT);
dictAppendWord(dp, "dictthreshold", ficlDictThreshold, FW_DEFAULT);
dictAppendWord(dp, "dictincrease", ficlDictIncrease, FW_DEFAULT);
#ifdef FICL_TRACE
dictAppendWord(dp, "trace!", ficlTrace, FW_DEFAULT);
#endif