Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Reinstate assert() statements in os_unix.c that were removed to allow wal-mode SHARED locks to be taken over more than one locking slot (this branch no longer does that, so the assert() statements can go back in). |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | wal2 |
| Files: | files | file ages | folders |
| SHA3-256: |
8445fb6d5dae98a0129514a10a15f084 |
| User & Date: | dan 2019-01-02 17:00:00 |
| Wiki: | wal2 |
Context
|
2019-01-11
| ||
| 14:58 | Add new file doc/wal2.md to this branch. (check-in: b495dce1 user: dan tags: wal2) | |
|
2019-01-02
| ||
| 17:08 | Reinstate assert() statements in os_unix.c that were removed to allow wal-mode SHARED locks to be taken over more than one locking slot (this branch no longer does that, so the assert() statements can go back in). (check-in: fcb7348b user: dan tags: begin-concurrent-wal2) | |
| 17:00 | Reinstate assert() statements in os_unix.c that were removed to allow wal-mode SHARED locks to be taken over more than one locking slot (this branch no longer does that, so the assert() statements can go back in). (check-in: 8445fb6d user: dan tags: wal2) | |
| 16:15 | Merge latest trunk changes into this branch. (check-in: 87ef68f9 user: dan tags: wal2) | |
Changes
Changes to src/os_unix.c.
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
....
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
|
/* Access to the unixShmNode object is serialized by the caller */ pShmNode = pFile->pInode->pShmNode; assert( pShmNode->nRef==0 || sqlite3_mutex_held(pShmNode->pShmMutex) ); assert( pShmNode->nRef>0 || unixMutexHeld() ); /* Shared locks never span more than one byte */ /* assert( n==1 || lockType!=F_RDLCK ); */ /* Locks are within range */ assert( n>=1 && n<=SQLITE_SHM_NLOCK ); if( pShmNode->hShm>=0 ){ /* Initialize the locking parameters */ f.l_type = lockType; ................................................................................ assert( pShmNode->pInode==pDbFd->pInode ); assert( ofst>=0 && ofst+n<=SQLITE_SHM_NLOCK ); assert( n>=1 ); assert( flags==(SQLITE_SHM_LOCK | SQLITE_SHM_SHARED) || flags==(SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE) || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED) || flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE) ); /* assert( n==1 || (flags & SQLITE_SHM_EXCLUSIVE)!=0 ); */ assert( pShmNode->hShm>=0 || pDbFd->pInode->bProcessLock==1 ); assert( pShmNode->hShm<0 || pDbFd->pInode->bProcessLock==0 ); mask = (1<<(ofst+n)) - (1<<ofst); assert( n>1 || mask==(1<<ofst) ); sqlite3_mutex_enter(pShmNode->pShmMutex); if( flags & SQLITE_SHM_UNLOCK ){ |
|
|
|
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
....
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
|
/* Access to the unixShmNode object is serialized by the caller */
pShmNode = pFile->pInode->pShmNode;
assert( pShmNode->nRef==0 || sqlite3_mutex_held(pShmNode->pShmMutex) );
assert( pShmNode->nRef>0 || unixMutexHeld() );
/* Shared locks never span more than one byte */
assert( n==1 || lockType!=F_RDLCK );
/* Locks are within range */
assert( n>=1 && n<=SQLITE_SHM_NLOCK );
if( pShmNode->hShm>=0 ){
/* Initialize the locking parameters */
f.l_type = lockType;
................................................................................
assert( pShmNode->pInode==pDbFd->pInode );
assert( ofst>=0 && ofst+n<=SQLITE_SHM_NLOCK );
assert( n>=1 );
assert( flags==(SQLITE_SHM_LOCK | SQLITE_SHM_SHARED)
|| flags==(SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE)
|| flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED)
|| flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE) );
assert( n==1 || (flags & SQLITE_SHM_EXCLUSIVE)!=0 );
assert( pShmNode->hShm>=0 || pDbFd->pInode->bProcessLock==1 );
assert( pShmNode->hShm<0 || pDbFd->pInode->bProcessLock==0 );
mask = (1<<(ofst+n)) - (1<<ofst);
assert( n>1 || mask==(1<<ofst) );
sqlite3_mutex_enter(pShmNode->pShmMutex);
if( flags & SQLITE_SHM_UNLOCK ){
|