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Overview
| Comment: | Create a fresh pthread_mutexattr_t every time a recursive mutex is allocated. Ticket #2588. (CVS 4300) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
3d746343add3feb9d208302a00b419d7 |
| User & Date: | drh 2007-08-25 16:31:30 |
Context
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2007-08-27
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| 17:27 | Modify sqlite3_release_memory() to use a global LRU list of pages. Untested. (CVS 4301) (check-in: 5626ce0b user: danielk1977 tags: trunk) | |
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2007-08-25
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| 16:31 | Create a fresh pthread_mutexattr_t every time a recursive mutex is allocated. Ticket #2588. (CVS 4300) (check-in: 3d746343 user: drh tags: trunk) | |
| 16:21 | Documentation and comment updates in sqlite.h.in and mutex.c. (CVS 4299) (check-in: 7289079d user: drh tags: trunk) | |
Changes
Changes to src/mutex.c.
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** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains the C functions that implement mutexes for ** use by the SQLite core. ** ** $Id: mutex.c,v 1.12 2007/08/25 16:21:30 drh Exp $ */ /* ** If SQLITE_MUTEX_APPDEF is defined, then this whole module is ** omitted and equivalent functionality must be provided by the ** application that links against the SQLite library. */ #ifndef SQLITE_MUTEX_APPDEF ................................................................................ { PTHREAD_MUTEX_INITIALIZER, }, { PTHREAD_MUTEX_INITIALIZER, }, { PTHREAD_MUTEX_INITIALIZER, }, }; sqlite3_mutex *p; switch( iType ){ case SQLITE_MUTEX_RECURSIVE: { static pthread_mutex_t initMutex = PTHREAD_MUTEX_INITIALIZER; static int isInit = 0; static pthread_mutexattr_t recursiveAttr; if( !isInit ){ pthread_mutex_lock(&initMutex); if( !isInit ){ pthread_mutexattr_init(&recursiveAttr); pthread_mutexattr_settype(&recursiveAttr, PTHREAD_MUTEX_RECURSIVE); } isInit = 1; pthread_mutex_unlock(&initMutex); } p = sqlite3MallocZero( sizeof(*p) ); if( p ){ p->id = iType; pthread_mutex_init(&p->mutex, &recursiveAttr); } break; } case SQLITE_MUTEX_FAST: { p = sqlite3MallocZero( sizeof(*p) ); if( p ){ p->id = iType; |
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** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains the C functions that implement mutexes for ** use by the SQLite core. ** ** $Id: mutex.c,v 1.13 2007/08/25 16:31:30 drh Exp $ */ /* ** If SQLITE_MUTEX_APPDEF is defined, then this whole module is ** omitted and equivalent functionality must be provided by the ** application that links against the SQLite library. */ #ifndef SQLITE_MUTEX_APPDEF ................................................................................ { PTHREAD_MUTEX_INITIALIZER, }, { PTHREAD_MUTEX_INITIALIZER, }, { PTHREAD_MUTEX_INITIALIZER, }, }; sqlite3_mutex *p; switch( iType ){ case SQLITE_MUTEX_RECURSIVE: { p = sqlite3MallocZero( sizeof(*p) ); if( p ){ pthread_mutexattr_t recursiveAttr; pthread_mutexattr_init(&recursiveAttr); pthread_mutexattr_settype(&recursiveAttr, PTHREAD_MUTEX_RECURSIVE); pthread_mutex_init(&p->mutex, &recursiveAttr); pthread_mutexattr_destroy(&recursiveAttr); p->id = iType; } break; } case SQLITE_MUTEX_FAST: { p = sqlite3MallocZero( sizeof(*p) ); if( p ){ p->id = iType; |