DB_ENV->mutex_lock()

#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.

Parameters

mutex

The mutex parameter is a mutex previously allocated by DB_ENV->mutex_alloc().

Errors

The DB_ENV->mutex_lock() method may fail and return one of the following non-zero errors:

EINVAL

An invalid flag value or parameter was specified.

Class

DB_ENV

See Also

Mutex Methods