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Overview
Comment: | Fix a bug whereby upgrading from a READ_FULL to a WRITE lock, and then back to a read lock was dropping all WAL locks. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | wal |
Files: | files | file ages | folders |
SHA1: |
55f5af5e174df7a28deeb36faa511389 |
User & Date: | dan 2010-04-30 16:38:59.000 |
Context
2010-04-30
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16:41 | Fix a problem in the previous commit. Both unixShm.lockState and unixShm.readLock should be set to READ when downgrading from a WRITE to a READ lock (check-in: 90119fecbc user: dan tags: wal) | |
16:38 | Fix a bug whereby upgrading from a READ_FULL to a WRITE lock, and then back to a read lock was dropping all WAL locks. (check-in: 55f5af5e17 user: dan tags: wal) | |
16:24 | Reapply commits [837d82a929] and [c05e7dca17] that were accidentally overwritten. (check-in: 598de52700 user: dan tags: wal) | |
Changes
Changes to src/os_unix.c.
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5236 5237 5238 5239 5240 5241 5242 5243 | } }else{ unixShmUnlock(pFile, p, UNIX_SHM_B); p->lockState = p->readLock = SQLITE_SHM_READ; } } }else if( p->lockState==SQLITE_SHM_WRITE ){ unixShmUnlock(pFile, p, UNIX_SHM_C|UNIX_SHM_D); | > | < | 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 | } }else{ unixShmUnlock(pFile, p, UNIX_SHM_B); p->lockState = p->readLock = SQLITE_SHM_READ; } } }else if( p->lockState==SQLITE_SHM_WRITE ){ rc = unixShmSharedLock(pFile, p, UNIX_SHM_A); unixShmUnlock(pFile, p, UNIX_SHM_C|UNIX_SHM_D); p->lockState = SQLITE_SHM_READ; }else{ assert( p->lockState==SQLITE_SHM_RECOVER ); unixShmUnlock(pFile, p, UNIX_SHM_MUTEX); sqlite3_mutex_leave(pFile->mutexRecov); p->lockState = p->readLock; rc = SQLITE_OK; } |
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