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Overview
| Comment: | Port mutex enhancments from check-in [f53b8a573b] to the Win32 implementation. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
74bb7225d132c80fd5758bb8c120448e |
| User & Date: | mistachkin 2018-02-18 00:54:06 |
Context
|
2018-02-18
| ||
| 17:50 | Fix a memory leak in the processing of nested row values. This problem has existed every since row values support was added (version 3.15.0, 2016-10-14) but was only just now detected by OSSFuzz. check-in: 2df6bbf1 user: drh tags: trunk | |
| 00:54 | Port mutex enhancments from check-in [f53b8a573b] to the Win32 implementation. check-in: 74bb7225 user: mistachkin tags: trunk | |
|
2018-02-17
| ||
| 07:38 | Fix a data race causing a tsan complaint with SQLITE_ENABLE_API_ARMOR builds on unix. The race condition is not dangerous in practice, it just upsets tsan. check-in: f53b8a57 user: dan tags: trunk | |
Changes
Changes to src/mutex_w32.c.
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 .. 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 ... 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 |
*/
struct sqlite3_mutex {
CRITICAL_SECTION mutex; /* Mutex controlling the lock */
int id; /* Mutex type */
#ifdef SQLITE_DEBUG
volatile int nRef; /* Number of enterances */
volatile DWORD owner; /* Thread holding this mutex */
volatile int trace; /* True to trace changes */
#endif
};
/*
** These are the initializer values used when declaring a "static" mutex
** on Win32. It should be noted that all mutexes require initialization
** on the Win32 platform.
*/
#define SQLITE_W32_MUTEX_INITIALIZER { 0 }
#ifdef SQLITE_DEBUG
#define SQLITE3_MUTEX_INITIALIZER { SQLITE_W32_MUTEX_INITIALIZER, 0, \
0L, (DWORD)0, 0 }
#else
#define SQLITE3_MUTEX_INITIALIZER { SQLITE_W32_MUTEX_INITIALIZER, 0 }
#endif
#ifdef SQLITE_DEBUG
/*
** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routine are
** intended for use only inside assert() statements.
*/
................................................................................
#endif
}
/*
** Initialize and deinitialize the mutex subsystem.
*/
static sqlite3_mutex winMutex_staticMutexes[] = {
SQLITE3_MUTEX_INITIALIZER,
SQLITE3_MUTEX_INITIALIZER,
SQLITE3_MUTEX_INITIALIZER,
SQLITE3_MUTEX_INITIALIZER,
SQLITE3_MUTEX_INITIALIZER,
SQLITE3_MUTEX_INITIALIZER,
SQLITE3_MUTEX_INITIALIZER,
SQLITE3_MUTEX_INITIALIZER,
SQLITE3_MUTEX_INITIALIZER,
SQLITE3_MUTEX_INITIALIZER,
SQLITE3_MUTEX_INITIALIZER,
SQLITE3_MUTEX_INITIALIZER
};
static int winMutex_isInit = 0;
static int winMutex_isNt = -1; /* <0 means "need to query" */
/* As the winMutexInit() and winMutexEnd() functions are called as part
** of the sqlite3_initialize() and sqlite3_shutdown() processing, the
................................................................................
#ifdef SQLITE_ENABLE_API_ARMOR
if( iType-2<0 || iType-2>=ArraySize(winMutex_staticMutexes) ){
(void)SQLITE_MISUSE_BKPT;
return 0;
}
#endif
p = &winMutex_staticMutexes[iType-2];
p->id = iType;
#ifdef SQLITE_DEBUG
#ifdef SQLITE_WIN32_MUTEX_TRACE_STATIC
p->trace = 1;
#endif
#endif
break;
}
}
return p;
}
/*
** This routine deallocates a previously
** allocated mutex. SQLite is careful to deallocate every
|
| | | | | | | | | | | | | | | < < > > |
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 .. 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 ... 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 |
*/
struct sqlite3_mutex {
CRITICAL_SECTION mutex; /* Mutex controlling the lock */
int id; /* Mutex type */
#ifdef SQLITE_DEBUG
volatile int nRef; /* Number of enterances */
volatile DWORD owner; /* Thread holding this mutex */
volatile LONG trace; /* True to trace changes */
#endif
};
/*
** These are the initializer values used when declaring a "static" mutex
** on Win32. It should be noted that all mutexes require initialization
** on the Win32 platform.
*/
#define SQLITE_W32_MUTEX_INITIALIZER { 0 }
#ifdef SQLITE_DEBUG
#define SQLITE3_MUTEX_INITIALIZER(id) { SQLITE_W32_MUTEX_INITIALIZER, id, \
0L, (DWORD)0, 0 }
#else
#define SQLITE3_MUTEX_INITIALIZER(id) { SQLITE_W32_MUTEX_INITIALIZER, id }
#endif
#ifdef SQLITE_DEBUG
/*
** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routine are
** intended for use only inside assert() statements.
*/
................................................................................
#endif
}
/*
** Initialize and deinitialize the mutex subsystem.
*/
static sqlite3_mutex winMutex_staticMutexes[] = {
SQLITE3_MUTEX_INITIALIZER(2),
SQLITE3_MUTEX_INITIALIZER(3),
SQLITE3_MUTEX_INITIALIZER(4),
SQLITE3_MUTEX_INITIALIZER(5),
SQLITE3_MUTEX_INITIALIZER(6),
SQLITE3_MUTEX_INITIALIZER(7),
SQLITE3_MUTEX_INITIALIZER(8),
SQLITE3_MUTEX_INITIALIZER(9),
SQLITE3_MUTEX_INITIALIZER(10),
SQLITE3_MUTEX_INITIALIZER(11),
SQLITE3_MUTEX_INITIALIZER(12),
SQLITE3_MUTEX_INITIALIZER(13)
};
static int winMutex_isInit = 0;
static int winMutex_isNt = -1; /* <0 means "need to query" */
/* As the winMutexInit() and winMutexEnd() functions are called as part
** of the sqlite3_initialize() and sqlite3_shutdown() processing, the
................................................................................
#ifdef SQLITE_ENABLE_API_ARMOR
if( iType-2<0 || iType-2>=ArraySize(winMutex_staticMutexes) ){
(void)SQLITE_MISUSE_BKPT;
return 0;
}
#endif
p = &winMutex_staticMutexes[iType-2];
#ifdef SQLITE_DEBUG
#ifdef SQLITE_WIN32_MUTEX_TRACE_STATIC
InterlockedCompareExchange(&p->trace, 1, 0);
#endif
#endif
break;
}
}
assert( p==0 || p->id==iType );
return p;
}
/*
** This routine deallocates a previously
** allocated mutex. SQLite is careful to deallocate every
|