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Add the SQLITE_BUSY_RESERVED_LOCK compile-time option. (CVS 1894)

FossilOrigin-Name: 25fe7a42ec2e06e659d7a0a6664789114c007e17
This commit is contained in:
drh
2004-08-19 13:29:15 +00:00
parent cb4c40ba0e
commit 2889ae7248
3 changed files with 11 additions and 10 deletions

View File

@@ -18,7 +18,7 @@
** file simultaneously, or one process from reading the database while
** another is writing.
**
** @(#) $Id: pager.c,v 1.158 2004/08/18 19:09:44 drh Exp $
** @(#) $Id: pager.c,v 1.159 2004/08/19 13:29:15 drh Exp $
*/
#include "os.h" /* Must be first to enable large file support */
#include "sqliteInt.h"
@@ -2417,7 +2417,7 @@ int sqlite3pager_begin(void *pData){
pPager->state = PAGER_EXCLUSIVE;
pPager->origDbSize = pPager->dbSize;
}else{
#if 0
#ifdef SQLITE_BUSY_RESERVED_LOCK
int busy = 1;
do {
rc = sqlite3OsLock(&pPager->fd, RESERVED_LOCK);
@@ -2426,8 +2426,9 @@ int sqlite3pager_begin(void *pData){
pPager->pBusyHandler->xFunc &&
pPager->pBusyHandler->xFunc(pPager->pBusyHandler->pArg, busy++)
);
#endif
#else
rc = sqlite3OsLock(&pPager->fd, RESERVED_LOCK);
#endif
if( rc!=SQLITE_OK ){
/* We do not call the busy handler when we fail to get a reserved lock.
** The only reason we might fail is because another process is holding