Add the ability to unregister a virtual table module by invoking

sqlite3_create_module() with a NULL sqlite3_module pointer.

FossilOrigin-Name: 31e34fa3390196cdc3178bf120224b08df5ec58fa2c77079ede6e9461a430dad

1 files changed, 3 insertions, 0 deletions

diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 52c982159..07e241a1c 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -1797,6 +1797,7 @@ struct Savepoint {
 struct Module {
   const sqlite3_module *pModule;       /* Callback pointers */
   const char *zName;                   /* Name passed to create_module() */
+  int nRefModule;                      /* Number of pointers to this object */
   void *pAux;                          /* pAux passed to create_module() */
   void (*xDestroy)(void *);            /* Module destructor function */
   Table *pEpoTab;                      /* Eponymous table for this module */
@@ -4438,6 +4439,7 @@ void sqlite3AutoLoadExtensions(sqlite3*);
 #  define sqlite3VtabInSync(db) 0
 #  define sqlite3VtabLock(X)
 #  define sqlite3VtabUnlock(X)
+#  define sqlite3VtabModuleUnref(D,X)
 #  define sqlite3VtabUnlockList(X)
 #  define sqlite3VtabSavepoint(X, Y, Z) SQLITE_OK
 #  define sqlite3GetVTable(X,Y)  ((VTable*)0)
@@ -4449,6 +4451,7 @@ void sqlite3AutoLoadExtensions(sqlite3*);
    int sqlite3VtabCommit(sqlite3 *db);
    void sqlite3VtabLock(VTable *);
    void sqlite3VtabUnlock(VTable *);
+   void sqlite3VtabModuleUnref(sqlite3*,Module*);
    void sqlite3VtabUnlockList(sqlite3*);
    int sqlite3VtabSavepoint(sqlite3 *, int, int);
    void sqlite3VtabImportErrmsg(Vdbe*, sqlite3_vtab*);