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Add experimental feature to detect threading bugs in apps that use

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SQLITE_CONFIG_MULTITHREADED. Enabled at compile time using
SQLITE_ENABLE_MULTITHREADED_CHECKS.

FossilOrigin-Name: a66886ac13aa6d8ccbb6d673ddd00267c93e3ee1fbc158236fce3157d150868d
This commit is contained in:
dan
2017-11-25 17:51:01 +00:00
parent d37ce8396a
commit 8385becfe1
5 changed files with 208 additions and 10 deletions
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10
src/main.c
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@@ -2822,6 +2822,7 @@ static int openDatabase(
}else{
isThreadsafe = sqlite3GlobalConfig.bFullMutex;
}
if( flags & SQLITE_OPEN_PRIVATECACHE ){
flags &= ~SQLITE_OPEN_SHAREDCACHE;
}else if( sqlite3GlobalConfig.sharedCacheEnabled ){
@@ -2854,13 +2855,20 @@ static int openDatabase(
/* Allocate the sqlite data structure */
db = sqlite3MallocZero( sizeof(sqlite3) );
if( db==0 ) goto opendb_out;
if( isThreadsafe ){
if( isThreadsafe
#ifdef SQLITE_ENABLE_MULTITHREADED_CHECKS
|| sqlite3GlobalConfig.bCoreMutex
#endif
){
db->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_RECURSIVE);
if( db->mutex==0 ){
sqlite3_free(db);
db = 0;
goto opendb_out;
}
if( isThreadsafe==0 ){
sqlite3MutexWarnOnContention(db->mutex);
}
}
sqlite3_mutex_enter(db->mutex);
db->errMask = 0xff;