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Overview
| Comment: | Test the result of pthread_create() and do not call pthread_join() if the thread creation failed. Ticket #3933. (CVS 6839) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
304c5110ad958b2cc1ddff30e68c8791 |
| User & Date: | drh 2009-07-03 12:57:58 |
Context
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2009-07-03
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| 15:37 | Make explicit the restrictions on UPDATE, DELETE, and INSERT statement syntax within triggers. Ticket #3947. (CVS 6840) check-in: c8bf40df user: drh tags: trunk | |
| 12:57 | Test the result of pthread_create() and do not call pthread_join() if the thread creation failed. Ticket #3933. (CVS 6839) check-in: 304c5110 user: drh tags: trunk | |
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2009-07-02
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| 18:40 |
Fix to sqlite3AuthRead to accommodate "new" or "old" references that are used in a context where a column reference may also be used (i.e. "SELECT new. | |
Changes
Changes to src/os_unix.c.
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** * Definitions of sqlite3_io_methods objects for all locking ** methods plus "finder" functions for each locking method. ** * sqlite3_vfs method implementations. ** * Locking primitives for the proxy uber-locking-method. (MacOSX only) ** * Definitions of sqlite3_vfs objects for all locking methods ** plus implementations of sqlite3_os_init() and sqlite3_os_end(). ** ** $Id: os_unix.c,v 1.253 2009/06/17 13:09:39 drh Exp $ */ #include "sqliteInt.h" #if SQLITE_OS_UNIX /* This file is used on unix only */ /* ** There are various methods for file locking used for concurrency ** control: ................................................................................ l.l_whence = SEEK_SET; rc = fcntl(fd_orig, F_SETLK, &l); if( rc!=0 ) return; memset(&d, 0, sizeof(d)); d.fd = fd; d.lock = l; d.lock.l_type = F_WRLCK; pthread_create(&t, 0, threadLockingTest, &d); pthread_join(t, 0); close(fd); if( d.result!=0 ) return; threadsOverrideEachOthersLocks = (d.lock.l_type==F_UNLCK); } #endif /* SQLITE_THERADSAFE && defined(__linux__) */ /* ** Release a unixLockInfo structure previously allocated by findLockInfo(). */ static void releaseLockInfo(struct unixLockInfo *pLock){ if( pLock ){ pLock->nRef--; |
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** * Definitions of sqlite3_io_methods objects for all locking ** methods plus "finder" functions for each locking method. ** * sqlite3_vfs method implementations. ** * Locking primitives for the proxy uber-locking-method. (MacOSX only) ** * Definitions of sqlite3_vfs objects for all locking methods ** plus implementations of sqlite3_os_init() and sqlite3_os_end(). ** ** $Id: os_unix.c,v 1.254 2009/07/03 12:57:58 drh Exp $ */ #include "sqliteInt.h" #if SQLITE_OS_UNIX /* This file is used on unix only */ /* ** There are various methods for file locking used for concurrency ** control: ................................................................................ l.l_whence = SEEK_SET; rc = fcntl(fd_orig, F_SETLK, &l); if( rc!=0 ) return; memset(&d, 0, sizeof(d)); d.fd = fd; d.lock = l; d.lock.l_type = F_WRLCK; if( pthread_create(&t, 0, threadLockingTest, &d)==0 ){ pthread_join(t, 0); } close(fd); if( d.result!=0 ) return; threadsOverrideEachOthersLocks = (d.lock.l_type==F_UNLCK); } #endif /* SQLITE_THREADSAFE && defined(__linux__) */ /* ** Release a unixLockInfo structure previously allocated by findLockInfo(). */ static void releaseLockInfo(struct unixLockInfo *pLock){ if( pLock ){ pLock->nRef--; |