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Add the sqlite3_io_methods.xMremap() method to the VFS interface. Also "PRAGMA mmap_size".

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FossilOrigin-Name: 6183f1bd86ceed76d22d9762f3d7eb33262c62d1
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dan
2013-03-19 19:28:06 +00:00
parent a72014faf5
commit 5d8a137218
18 changed files with 263 additions and 110 deletions
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13
src/btree.c
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@@ -2130,6 +2130,19 @@ int sqlite3BtreeSetCacheSize(Btree *p, int mxPage){
return SQLITE_OK;
}
/*
** Change the limit on the amount of the database file that may be
** memory mapped.
*/
int sqlite3BtreeSetMmapSize(Btree *p, int nMap){
BtShared *pBt = p->pBt;
assert( sqlite3_mutex_held(p->db->mutex) );
sqlite3BtreeEnter(p);
sqlite3PagerSetMmapsize(pBt->pPager, nMap);
sqlite3BtreeLeave(p);
return SQLITE_OK;
}
/*
** Change the way data is synced to disk in order to increase or decrease
** how well the database resists damage due to OS crashes and power