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Berkeley DB: DbEnv::set_msgcall
DbEnv::set_msgcall
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#include <db_cxx.h>
void DbEnv::set_msgcall(
void (*db_msgcall_fcn)(const DbEnv *dbenv, const char *msg));
Description: DbEnv::set_msgcall
There are interfaces in the Berkeley DB library which either directly output
informational messages or statistical information, or configure the
library to output such messages when performing other operations, for
example, DbEnv::set_verbose and DbEnv::stat_print.
The DbEnv::set_msgcall and Db::set_msgcall methods are used to
pass these messages to the application, and Berkeley DB will call
db_msgcall_fcn with each message. It is up to the
db_msgcall_fcn function to display the message in an appropriate
manner.
Setting db_msgcall_fcn to NULL unconfigures the callback interface.
Alternatively, you can use the DbEnv::set_message_stream and
Db::set_message_stream methods to display the messages via an output
stream, or the Db::set_msgfile or DbEnv::set_msgfile methods
to display the messages via a C library FILE *.
The DbEnv::set_msgcall method may be called at any time during the life of the
application.
Parameters
- db_msgcall_fcn
- The db_msgcall_fcn parameter is the application-specified message
reporting function. The function takes two parameters:
- dbenv
- The dbenv parameter is the enclosing database environment.
- msg
- The msg parameter is the message string.
Class
DbEnv
See Also
Database Environments and Related Methods
Copyright (c) 1996-2004 Sleepycat Software, Inc. - All rights reserved.
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