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Experimental change to allow clients to block when taking a SHARED lock to connect to a wal mode database.

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FossilOrigin-Name: d2d6a000fb9bf8097e0ce9979685408d183be3ab785ceeb11ec1f97a81a83e41
This commit is contained in:
dan
2025-02-10 20:46:14 +00:00
parent df54ecb1bf
commit 2d87894700
11 changed files with 231 additions and 29 deletions
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14
src/main.c
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@@ -1830,13 +1830,25 @@ int sqlite3_busy_timeout(sqlite3 *db, int ms){
/*
** Set the setlk timeout value.
*/
int sqlite3_setlk_timeout(sqlite3 *db, int ms){
int sqlite3_setlk_timeout(sqlite3 *db, int ms, int flags){
int iDb;
int bBOC = ((flags & SQLITE_SETLK_BLOCK_ON_CONNECT) ? 1 : 0);
#ifdef SQLITE_ENABLE_API_ARMOR
if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
#endif
if( ms<-1 ) return SQLITE_RANGE;
#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
db->setlkTimeout = ms;
db->setlkFlags = flags;
sqlite3BtreeEnterAll(db);
for(iDb=0; iDb<db->nDb; iDb++){
Btree *pBt = db->aDb[iDb].pBt;
if( pBt ){
sqlite3_file *fd = sqlite3PagerFile(sqlite3BtreePager(pBt));
sqlite3OsFileControlHint(fd, SQLITE_FCNTL_BLOCK_ON_CONNECT, (void*)&bBOC);
}
}
sqlite3BtreeLeaveAll(db);
#endif
return SQLITE_OK;
}