#include <db.h> int DB_ENV->mutex_lock(DB_ENV *dbenv, db_mutex_t mutex);
The DB_ENV->mutex_lock() method locks the mutex allocated by
DB_ENV->mutex_alloc()
. The
thread of control calling DB_ENV->mutex_lock() will block until the
lock is available.
The DB_ENV->mutex_lock()
method returns a non-zero error value on failure and 0 on success.
The mutex parameter is a mutex previously allocated by DB_ENV->mutex_alloc() .
The DB_ENV->mutex_lock()
method may fail and return one of the following non-zero errors: