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When recycling a page, try to find one that does not require a call to xSync() on the journal file. Also simplify some of the mutex related things in pcache. (CVS 5597)

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FossilOrigin-Name: 93dbc5427bebaa0b3d726731027caad3f70611c7
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danielk1977
2008-08-22 16:22:17 +00:00
parent 709b8cb434
commit a858aa2e8c
6 changed files with 151 additions and 136 deletions
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19
src/pcache.h
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@@ -12,7 +12,7 @@
** This header file defines the interface that the sqlite page cache
** subsystem.
**
** @(#) $Id: pcache.h,v 1.3 2008/08/21 20:21:35 drh Exp $
** @(#) $Id: pcache.h,v 1.4 2008/08/22 16:22:17 danielk1977 Exp $
*/
#ifndef _PCACHE_H_
@@ -70,13 +70,13 @@ void sqlite3PCacheFree(void*);
** Only clean and unpinned pages can be reclaimed.
*/
void sqlite3PcacheOpen(
int szPage, /* Size of every page */
int szExtra, /* Extra space associated with each page */
int bPurgeable, /* True if pages are on backing store */
void (*xDestroy)(PgHdr *), /* Called to destroy a page */
int (*xStress)(void*), /* Call to try to make pages clean */
void *pStress, /* Argument to xStress */
PCache *pToInit /* Preallocated space for the PCache */
int szPage, /* Size of every page */
int szExtra, /* Extra space associated with each page */
int bPurgeable, /* True if pages are on backing store */
void (*xDestroy)(PgHdr *), /* Called to destroy a page */
int (*xStress)(void*, PgHdr*), /* Call to try to make pages clean */
void *pStress, /* Argument to xStress */
PCache *pToInit /* Preallocated space for the PCache */
);
/* Modify the page-size after the cache has been created. */
@@ -118,9 +118,6 @@ void sqlite3PcacheRollback(PCache*, int); /* Rollback to preserved copy */
/* Get a list of all dirty pages in the cache, sorted by page number */
PgHdr *sqlite3PcacheDirtyList(PCache*);
/* Query the cache for a dirty page with a zero ref-count */
PgHdr *sqlite3PcacheDirtyPage(PCache *);
/* Reset and close the cache object */
void sqlite3PcacheClose(PCache*);