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Refactor names. Use "small" instead of "mini" to describe the smaller

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of the two lookaside memory allocation sizes.

FossilOrigin-Name: 88d244983854cdc1a369c5df09ae00f1098784db768ba4e17b963d187dcb1009
This commit is contained in:
drh
2019-12-31 15:12:34 +00:00
parent 5f6a2ed7f2
commit cf014f6cbd
7 changed files with 76 additions and 76 deletions
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28
src/sqliteInt.h
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@@ -1305,17 +1305,17 @@ struct Schema {
** outstanding at any point in the past - by subtracting the number of
** allocations on the pInit list from the total number of allocations.
**
** Enhancement on 2019-12-12: Mini-lookaside
** Enhancement on 2019-12-12: Two-size-lookaside
** The default lookaside configuration is 100 slots of 1200 bytes each.
** The larger slot sizes are important for performance, but they waste
** a lot of space, as most lookaside allocations are less than 128 bytes.
** The mini-lookaside enhancement breaks up the lookaside allocation into
** two pools: One of 128-byte slots and the other of the default size
** (1200-byte) slots. Allocations are filled from the mini-pool first,
** The two-size-lookaside enhancement breaks up the lookaside allocation
** into two pools: One of 128-byte slots and the other of the default size
** (1200-byte) slots. Allocations are filled from the small-pool first,
** failing over to the full-size pool if that does not work. Thus more
** lookaside slots are available while also using less memory.
** This enhancement can be omitted by compiling with
** SQLITE_OMIT_MINI_LOOKASIDE.
** SQLITE_OMIT_TWOSIZE_LOOKASIDE.
*/
struct Lookaside {
u32 bDisable; /* Only operate the lookaside when zero */
@@ -1326,12 +1326,12 @@ struct Lookaside {
u32 anStat[3]; /* 0: hits. 1: size misses. 2: full misses */
LookasideSlot *pInit; /* List of buffers not previously used */
LookasideSlot *pFree; /* List of available buffers */
#ifndef SQLITE_OMIT_MINI_LOOKASIDE
LookasideSlot *pMiniInit; /* List of mini buffers not prediously used */
LookasideSlot *pMiniFree; /* List of available mini buffers */
#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
LookasideSlot *pSmallInit; /* List of small buffers not prediously used */
LookasideSlot *pSmallFree; /* List of available small buffers */
void *pMiddle; /* First byte past end of full-size buffers and
** the first byte of mini-buffers */
#endif /* SQLITE_OMIT_MINI_LOOKASIDE */
** the first byte of LOOKASIDE_SMALL buffers */
#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */
void *pStart; /* First byte of available memory space */
void *pEnd; /* First byte past end of available space */
};
@@ -1343,11 +1343,11 @@ struct LookasideSlot {
#define EnableLookaside db->lookaside.bDisable--;\
db->lookaside.sz=db->lookaside.bDisable?0:db->lookaside.szTrue
/* Size of the MINI lookside allocation */
#ifdef SQLITE_OMIT_MINI_LOOKASIDE
# define MINI_SZ 0
/* Size of the smaller allocations in two-size lookside */
#ifdef SQLITE_OMIT_TWOSIZE_LOOKASIDE
# define LOOKASIDE_SMALL 0
#else
# define MINI_SZ 128
# define LOOKASIDE_SMALL 128
#endif
/*