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Avoid unnecessary calls to FCNTL_SIZE_HINT. Return an error to the user if the file-control invoked by "PRAGMA mmap_size" returns a value other than SQLITE_OK or SQLITE_NOTFOUND.

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FossilOrigin-Name: 40cfde8b4a59a09e52e62f9f029f8d3b32eb15fa
This commit is contained in:
dan
2013-05-23 10:13:18 +00:00
parent 34e258c942
commit 3719f5f600
4 changed files with 17 additions and 12 deletions
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3
src/pager.c
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@@ -4214,7 +4214,8 @@ static int pager_write_pagelist(Pager *pPager, PgHdr *pList){
*/
assert( rc!=SQLITE_OK || isOpen(pPager->fd) );
if( rc==SQLITE_OK
&& (pList->pDirty ? pPager->dbSize : pList->pgno+1)>pPager->dbHintSize
&& pPager->dbHintSize<pPager->dbSize
&& (pList->pDirty || pList->pgno>pPager->dbHintSize)
){
sqlite3_int64 szFile = pPager->pageSize * (sqlite3_int64)pPager->dbSize;
sqlite3OsFileControlHint(pPager->fd, SQLITE_FCNTL_SIZE_HINT, &szFile);