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Overview
| Comment: | Fixed "Interlocked" logic error that prevented the "static" mutexes from being released when sqlite3_shutdown() is called. Ticket #4011. (CVS 6964) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 04cafb7ee3b67a68c0604d7f1143feae |
| User & Date: | shane 2009-08-10 03:23:21 |
Context
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2009-08-10
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| 03:57 | Removed some warnings from the MSVC compile. (CVS 6965) check-in: ee034cfc user: shane tags: trunk | |
| 03:23 | Fixed "Interlocked" logic error that prevented the "static" mutexes from being released when sqlite3_shutdown() is called. Ticket #4011. (CVS 6964) check-in: 04cafb7e user: shane tags: trunk | |
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2009-08-08
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| 18:01 | Suppress various compiler warnings. (CVS 6963) check-in: 257e9b57 user: drh tags: trunk | |
Changes
Changes to src/mutex_w32.c.
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** May you do good and not evil. ** 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 win32 ** ** $Id: mutex_w32.c,v 1.17 2009/06/01 17:10:22 shane Exp $ */ #include "sqliteInt.h" /* ** The code in this file is only used if we are compiling multithreaded ** on a win32 system. */ ................................................................................ ** processing, the "interlocked" magic is probably not ** strictly necessary. */ static long winMutex_lock = 0; static int winMutexInit(void){ /* The first to increment to 1 does actual initialization */ if( InterlockedIncrement(&winMutex_lock)==1 ){ int i; for(i=0; i<sizeof(winMutex_staticMutexes)/sizeof(winMutex_staticMutexes[0]); i++){ InitializeCriticalSection(&winMutex_staticMutexes[i].mutex); } winMutex_isInit = 1; }else{ while( !winMutex_isInit ){ Sleep(1); } } return SQLITE_OK; } static int winMutexEnd(void){ /* The first to decrement to 0 does actual shutdown ** (which should be the last to shutdown.) */ if( InterlockedDecrement(&winMutex_lock)==0 ){ if( winMutex_isInit==1 ){ int i; for(i=0; i<sizeof(winMutex_staticMutexes)/sizeof(winMutex_staticMutexes[0]); i++){ DeleteCriticalSection(&winMutex_staticMutexes[i].mutex); } winMutex_isInit = 0; } |
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** May you do good and not evil. ** 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 win32 ** ** $Id: mutex_w32.c,v 1.18 2009/08/10 03:23:21 shane Exp $ */ #include "sqliteInt.h" /* ** The code in this file is only used if we are compiling multithreaded ** on a win32 system. */ ................................................................................ ** processing, the "interlocked" magic is probably not ** strictly necessary. */ static long winMutex_lock = 0; static int winMutexInit(void){ /* The first to increment to 1 does actual initialization */ if( InterlockedCompareExchange(&winMutex_lock, 1, 0)==0 ){ int i; for(i=0; i<sizeof(winMutex_staticMutexes)/sizeof(winMutex_staticMutexes[0]); i++){ InitializeCriticalSection(&winMutex_staticMutexes[i].mutex); } winMutex_isInit = 1; }else{ /* Someone else is in the process of initing the static mutexes */ while( !winMutex_isInit ){ Sleep(1); } } return SQLITE_OK; } static int winMutexEnd(void){ /* The first to decrement to 0 does actual shutdown ** (which should be the last to shutdown.) */ if( InterlockedCompareExchange(&winMutex_lock, 0, 1)==1 ){ if( winMutex_isInit==1 ){ int i; for(i=0; i<sizeof(winMutex_staticMutexes)/sizeof(winMutex_staticMutexes[0]); i++){ DeleteCriticalSection(&winMutex_staticMutexes[i].mutex); } winMutex_isInit = 0; } |