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Overview
Comment: | Add two new static mutexes, SQLITE_MUTEX_STATIC_APP1 and _APP2, for use by the application program. First intended use is in test programs for the memory allocation logic where one does not want to allocating a _FAST or _RECURSIVE mutex since that would involve using the memory allocation system under test. |
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Timelines: | family | ancestors | descendants | both | threads |
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SHA1: |
13686035dd1cf67ad9c6d282ab13c325 |
User & Date: | drh 2014-05-03 12:00:01.738 |
Context
2014-05-03
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13:53 | Get SQLITE_MUTEX_STATIC_APP1 and _APP2 working for the debugMutex implementation. (check-in: f49ba1c926 user: drh tags: threads) | |
12:00 | Add two new static mutexes, SQLITE_MUTEX_STATIC_APP1 and _APP2, for use by the application program. First intended use is in test programs for the memory allocation logic where one does not want to allocating a _FAST or _RECURSIVE mutex since that would involve using the memory allocation system under test. (check-in: 13686035dd user: drh tags: threads) | |
11:22 | Add the SQLITE_DEFAULT_WORKER_THREADS compile-time option. Fix a NULL-pointer dereference that can occur following OOM. (check-in: e0dea89b3e user: drh tags: threads) | |
Changes
Changes to src/mutex_unix.c.
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92 93 94 95 96 97 98 | ** to sqlite3_mutex_alloc() is one of these integer constants: ** ** <ul> ** <li> SQLITE_MUTEX_FAST ** <li> SQLITE_MUTEX_RECURSIVE ** <li> SQLITE_MUTEX_STATIC_MASTER ** <li> SQLITE_MUTEX_STATIC_MEM | | > > | 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | ** to sqlite3_mutex_alloc() is one of these integer constants: ** ** <ul> ** <li> SQLITE_MUTEX_FAST ** <li> SQLITE_MUTEX_RECURSIVE ** <li> SQLITE_MUTEX_STATIC_MASTER ** <li> SQLITE_MUTEX_STATIC_MEM ** <li> SQLITE_MUTEX_STATIC_OPEN ** <li> SQLITE_MUTEX_STATIC_PRNG ** <li> SQLITE_MUTEX_STATIC_LRU ** <li> SQLITE_MUTEX_STATIC_PMEM ** <li> SQLITE_MUTEX_STATIC_APP1 ** <li> SQLITE_MUTEX_STATIC_APP2 ** </ul> ** ** The first two constants cause sqlite3_mutex_alloc() to create ** a new mutex. The new mutex is recursive when SQLITE_MUTEX_RECURSIVE ** is used but not necessarily so when SQLITE_MUTEX_FAST is used. ** The mutex implementation does not need to make a distinction ** between SQLITE_MUTEX_RECURSIVE and SQLITE_MUTEX_FAST if it does |
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124 125 126 127 128 129 130 131 132 133 134 135 136 137 | ** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc() ** returns a different mutex on every call. But for the static ** mutex types, the same mutex is returned on every call that has ** the same type number. */ static sqlite3_mutex *pthreadMutexAlloc(int iType){ static sqlite3_mutex staticMutexes[] = { SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER }; | > > | 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | ** or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc() ** returns a different mutex on every call. But for the static ** mutex types, the same mutex is returned on every call that has ** the same type number. */ static sqlite3_mutex *pthreadMutexAlloc(int iType){ static sqlite3_mutex 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 }; |
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Changes to src/mutex_w32.c.
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95 96 97 98 99 100 101 102 103 104 105 106 107 108 | */ static sqlite3_mutex winMutex_staticMutexes[6] = { SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER, SQLITE3_MUTEX_INITIALIZER }; static int winMutex_isInit = 0; /* As winMutexInit() and winMutexEnd() are called as part ** of the sqlite3_initialize and sqlite3_shutdown() ** processing, the "interlocked" magic is probably not ** strictly necessary. | > > | 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | */ static sqlite3_mutex winMutex_staticMutexes[6] = { 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; /* As winMutexInit() and winMutexEnd() are called as part ** of the sqlite3_initialize and sqlite3_shutdown() ** processing, the "interlocked" magic is probably not ** strictly necessary. |
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155 156 157 158 159 160 161 | ** to sqlite3_mutex_alloc() is one of these integer constants: ** ** <ul> ** <li> SQLITE_MUTEX_FAST ** <li> SQLITE_MUTEX_RECURSIVE ** <li> SQLITE_MUTEX_STATIC_MASTER ** <li> SQLITE_MUTEX_STATIC_MEM | | > > | 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 | ** to sqlite3_mutex_alloc() is one of these integer constants: ** ** <ul> ** <li> SQLITE_MUTEX_FAST ** <li> SQLITE_MUTEX_RECURSIVE ** <li> SQLITE_MUTEX_STATIC_MASTER ** <li> SQLITE_MUTEX_STATIC_MEM ** <li> SQLITE_MUTEX_STATIC_OPEN ** <li> SQLITE_MUTEX_STATIC_PRNG ** <li> SQLITE_MUTEX_STATIC_LRU ** <li> SQLITE_MUTEX_STATIC_PMEM ** <li> SQLITE_MUTEX_STATIC_APP1 ** <li> SQLITE_MUTEX_STATIC_APP2 ** </ul> ** ** The first two constants cause sqlite3_mutex_alloc() to create ** a new mutex. The new mutex is recursive when SQLITE_MUTEX_RECURSIVE ** is used but not necessarily so when SQLITE_MUTEX_FAST is used. ** The mutex implementation does not need to make a distinction ** between SQLITE_MUTEX_RECURSIVE and SQLITE_MUTEX_FAST if it does |
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Changes to src/sqlite.h.in.
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5824 5825 5826 5827 5828 5829 5830 | ** to sqlite3_mutex_alloc() is one of these integer constants: ** ** <ul> ** <li> SQLITE_MUTEX_FAST ** <li> SQLITE_MUTEX_RECURSIVE ** <li> SQLITE_MUTEX_STATIC_MASTER ** <li> SQLITE_MUTEX_STATIC_MEM | | | > > | 5824 5825 5826 5827 5828 5829 5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840 5841 5842 5843 | ** to sqlite3_mutex_alloc() is one of these integer constants: ** ** <ul> ** <li> SQLITE_MUTEX_FAST ** <li> SQLITE_MUTEX_RECURSIVE ** <li> SQLITE_MUTEX_STATIC_MASTER ** <li> SQLITE_MUTEX_STATIC_MEM ** <li> SQLITE_MUTEX_STATIC_OPEN ** <li> SQLITE_MUTEX_STATIC_PRNG ** <li> SQLITE_MUTEX_STATIC_LRU ** <li> SQLITE_MUTEX_STATIC_PMEM ** <li> SQLITE_MUTEX_STATIC_APP1 ** <li> SQLITE_MUTEX_STATIC_APP2 ** </ul>)^ ** ** ^The first two constants (SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE) ** cause sqlite3_mutex_alloc() to create ** a new mutex. ^The new mutex is recursive when SQLITE_MUTEX_RECURSIVE ** is used but not necessarily so when SQLITE_MUTEX_FAST is used. ** The mutex implementation does not need to make a distinction |
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6031 6032 6033 6034 6035 6036 6037 6038 6039 6040 6041 6042 6043 6044 | #define SQLITE_MUTEX_STATIC_MEM 3 /* sqlite3_malloc() */ #define SQLITE_MUTEX_STATIC_MEM2 4 /* NOT USED */ #define SQLITE_MUTEX_STATIC_OPEN 4 /* sqlite3BtreeOpen() */ #define SQLITE_MUTEX_STATIC_PRNG 5 /* sqlite3_random() */ #define SQLITE_MUTEX_STATIC_LRU 6 /* lru page list */ #define SQLITE_MUTEX_STATIC_LRU2 7 /* NOT USED */ #define SQLITE_MUTEX_STATIC_PMEM 7 /* sqlite3PageMalloc() */ /* ** CAPI3REF: Retrieve the mutex for a database connection ** ** ^This interface returns a pointer the [sqlite3_mutex] object that ** serializes access to the [database connection] given in the argument ** when the [threading mode] is Serialized. | > > | 6033 6034 6035 6036 6037 6038 6039 6040 6041 6042 6043 6044 6045 6046 6047 6048 | #define SQLITE_MUTEX_STATIC_MEM 3 /* sqlite3_malloc() */ #define SQLITE_MUTEX_STATIC_MEM2 4 /* NOT USED */ #define SQLITE_MUTEX_STATIC_OPEN 4 /* sqlite3BtreeOpen() */ #define SQLITE_MUTEX_STATIC_PRNG 5 /* sqlite3_random() */ #define SQLITE_MUTEX_STATIC_LRU 6 /* lru page list */ #define SQLITE_MUTEX_STATIC_LRU2 7 /* NOT USED */ #define SQLITE_MUTEX_STATIC_PMEM 7 /* sqlite3PageMalloc() */ #define SQLITE_MUTEX_STATIC_APP1 8 /* For use by application */ #define SQLITE_MUTEX_STATIC_APP2 9 /* For use by application */ /* ** CAPI3REF: Retrieve the mutex for a database connection ** ** ^This interface returns a pointer the [sqlite3_mutex] object that ** serializes access to the [database connection] given in the argument ** when the [threading mode] is Serialized. |
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