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Overview
| Comment: | Omit the sqlite3GetReservedNoMutex() routine in build configurations where it is not used. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
f193dbb6b96b2f49dd0d6345802c9c00 |
| User & Date: | drh 2012-10-01 12:44:26.787 |
Context
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2012-10-01
| ||
| 17:44 | Minor changes to the query planner for improved test coverage. (check-in: c12044df32 user: drh tags: trunk) | |
| 12:44 | Omit the sqlite3GetReservedNoMutex() routine in build configurations where it is not used. (check-in: f193dbb6b9 user: drh tags: trunk) | |
| 12:16 | Make sure the size parameter to read and write VFS methods in the unix VFS do not become too big or go negative. This was not actually possible in the current code. The checks are added to make sure some future bug does not make it possible. (check-in: daebe3bd2d user: drh tags: trunk) | |
Changes
Changes to src/btree.c.
| ︙ | ︙ | |||
2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 |
/*
** Return the currently defined page size
*/
int sqlite3BtreeGetPageSize(Btree *p){
return p->pBt->pageSize;
}
/*
** This function is similar to sqlite3BtreeGetReserve(), except that it
** may only be called if it is guaranteed that the b-tree mutex is already
** held.
**
** This is useful in one special case in the backup API code where it is
** known that the shared b-tree mutex is held, but the mutex on the
** database handle that owns *p is not. In this case if sqlite3BtreeEnter()
** were to be called, it might collide with some other operation on the
** database handle that owns *p, causing undefined behaviour.
*/
int sqlite3BtreeGetReserveNoMutex(Btree *p){
assert( sqlite3_mutex_held(p->pBt->mutex) );
return p->pBt->pageSize - p->pBt->usableSize;
}
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) || !defined(SQLITE_OMIT_VACUUM)
/*
** Return the number of bytes of space at the end of every page that
** are intentually left unused. This is the "reserved" space that is
** sometimes used by extensions.
*/
| > > | 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 |
/*
** Return the currently defined page size
*/
int sqlite3BtreeGetPageSize(Btree *p){
return p->pBt->pageSize;
}
#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_DEBUG)
/*
** This function is similar to sqlite3BtreeGetReserve(), except that it
** may only be called if it is guaranteed that the b-tree mutex is already
** held.
**
** This is useful in one special case in the backup API code where it is
** known that the shared b-tree mutex is held, but the mutex on the
** database handle that owns *p is not. In this case if sqlite3BtreeEnter()
** were to be called, it might collide with some other operation on the
** database handle that owns *p, causing undefined behaviour.
*/
int sqlite3BtreeGetReserveNoMutex(Btree *p){
assert( sqlite3_mutex_held(p->pBt->mutex) );
return p->pBt->pageSize - p->pBt->usableSize;
}
#endif /* SQLITE_HAS_CODEC || SQLITE_DEBUG */
#if !defined(SQLITE_OMIT_PAGER_PRAGMAS) || !defined(SQLITE_OMIT_VACUUM)
/*
** Return the number of bytes of space at the end of every page that
** are intentually left unused. This is the "reserved" space that is
** sometimes used by extensions.
*/
|
| ︙ | ︙ |
Changes to src/btree.h.
| ︙ | ︙ | |||
67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 | int sqlite3BtreeSyncDisabled(Btree*); int sqlite3BtreeSetPageSize(Btree *p, int nPagesize, int nReserve, int eFix); int sqlite3BtreeGetPageSize(Btree*); int sqlite3BtreeMaxPageCount(Btree*,int); u32 sqlite3BtreeLastPage(Btree*); int sqlite3BtreeSecureDelete(Btree*,int); int sqlite3BtreeGetReserve(Btree*); int sqlite3BtreeGetReserveNoMutex(Btree *p); int sqlite3BtreeSetAutoVacuum(Btree *, int); int sqlite3BtreeGetAutoVacuum(Btree *); int sqlite3BtreeBeginTrans(Btree*,int); int sqlite3BtreeCommitPhaseOne(Btree*, const char *zMaster); int sqlite3BtreeCommitPhaseTwo(Btree*, int); int sqlite3BtreeCommit(Btree*); int sqlite3BtreeRollback(Btree*,int); | > > | 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | int sqlite3BtreeSyncDisabled(Btree*); int sqlite3BtreeSetPageSize(Btree *p, int nPagesize, int nReserve, int eFix); int sqlite3BtreeGetPageSize(Btree*); int sqlite3BtreeMaxPageCount(Btree*,int); u32 sqlite3BtreeLastPage(Btree*); int sqlite3BtreeSecureDelete(Btree*,int); int sqlite3BtreeGetReserve(Btree*); #if defined(SQLITE_HAS_CODEC) || defined(SQLITE_DEBUG) int sqlite3BtreeGetReserveNoMutex(Btree *p); #endif int sqlite3BtreeSetAutoVacuum(Btree *, int); int sqlite3BtreeGetAutoVacuum(Btree *); int sqlite3BtreeBeginTrans(Btree*,int); int sqlite3BtreeCommitPhaseOne(Btree*, const char *zMaster); int sqlite3BtreeCommitPhaseTwo(Btree*, int); int sqlite3BtreeCommit(Btree*); int sqlite3BtreeRollback(Btree*,int); |
| ︙ | ︙ |