# DbEnv::set_mutexlocks |

`

###

    #include <db_cxx.h>

    static int
    DbEnv::set_mutexlocks(int do_lock);

# Description

Toggle mutex locks. Setting do_lock to a zero value causes Berkeley DB to grant all requested mutual exclusion mutexes without testing for their availability.

The DbEnv::set_mutexlocks interface affects the entire application, not a single database or database environment.

While the DbEnv::set_mutexlocks interface may be used to configure Berkeley DB at any time during the life of the application, it should normally be called before making any calls to the db_env_create or db_create methods.

This functionality should never be used for any other purpose than debugging.

The DbEnv::set_mutexlocks interface may be used to configure Berkeley DB at any time during the life of the application.

The DbEnv::set_mutexlocks method either returns a non-zero error value or throws an exception that encapsulates a non-zero error value on failure, and returns 0 on success.

# Errors

EINVAL
  An invalid flag value or parameter was specified.

### Class

DbEnv

# See Also

DbEnv::close, DbEnv::open, DbEnv::remove, DbEnv::err, DbEnv::strerror, DbEnv::version, DbEnv::set_cachesize, DbEnv::set_errcall, DbEnv::set_errfile, DbEnv::set_error_stream, DbEnv::set_errpfx, DbEnv::set_paniccall, and DbEnv::set_verbose.`

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