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Memory-mapped I/O is now on by default. The "PRAGMA mmap_limit(N)" can be

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used to issue a hint to the VFS to limit mmap space to N bytes.  The VFS
is free to ignore that hint if desired.  However, if "PRAGMA mmap_limit(0)"
is used, xFetch is never called.

FossilOrigin-Name: 1b37c4effdd03aa2ea938a71b4f22ed27391689b
This commit is contained in:
drh
2013-03-25 23:09:28 +00:00
parent d1ab8065c1
commit 0d0614bdc6
18 changed files with 84 additions and 92 deletions
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7
src/sqliteLimit.h
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@@ -206,3 +206,10 @@
#ifndef SQLITE_MAX_TRIGGER_DEPTH
# define SQLITE_MAX_TRIGGER_DEPTH 1000
#endif
/*
** Default maximum size of memory used by xFetch in the VFS.
*/
#ifndef SQLITE_DEFAULT_MMAP_LIMIT
# define SQLITE_DEFAULT_MMAP_LIMIT (256*1024*1024)
#endif