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Add the SQLITE_CONFIG_MMAP_LIMIT configuration option for overriding the

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SQLITE_DEFAULT_MMAP_LIMIT compile-time setting.  Enhance "PRAGMA mmap_limit"
so that without a specific database name, it sets the limit on all database
files and changes the default for any future databases that might be added
using ATTACH.

FossilOrigin-Name: 78141d0a16dd1d56b575fccd149de7fa789cb06c
This commit is contained in:
drh
2013-04-01 22:38:06 +00:00
parent a539c8a464
commit a1f42c7c32
10 changed files with 53 additions and 17 deletions
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2
src/sqliteInt.h
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@@ -834,6 +834,7 @@ struct sqlite3 {
int nDb; /* Number of backends currently in use */
int flags; /* Miscellaneous flags. See below */
i64 lastRowid; /* ROWID of most recent insert (see above) */
i64 mxMmap; /* Default mmap_limit setting */
unsigned int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */
int errCode; /* Most recent error code (SQLITE_*) */
int errMask; /* & result codes with this before returning */
@@ -2505,6 +2506,7 @@ struct Sqlite3Config {
void *pHeap; /* Heap storage space */
int nHeap; /* Size of pHeap[] */
int mnReq, mxReq; /* Min and max heap requests sizes */
sqlite3_int64 mxMmap; /* Maximum mmap() space per open file */
void *pScratch; /* Scratch memory */
int szScratch; /* Size of each scratch buffer */
int nScratch; /* Number of scratch buffers */