DB->set_feedback API Ref

#include <db.h>

int DB->set_feedback(DB *, void (*db_feedback_fcn)(DB *dbp, int opcode, int percent));


Description: DB->set_feedback

Some operations performed by the Berkeley DB library can take non-trivial amounts of time. The DB->set_feedback method can be used by applications to monitor progress within these operations. When an operation is likely to take a long time, Berkeley DB will call the specified callback function with progress information.

It is up to the callback function to display this information in an appropriate manner.

The DB->set_feedback method may be called at any time during the life of the application.

The DB->set_feedback method returns a non-zero error value on failure and 0 on success.

Parameters
db_feedback_fcn

Berkeley DB is not re-entrant. Callback functions should not attempt to make library calls (for example, to release locks or close open handles). Re-entering Berkeley DB is not guaranteed to work correctly, and the results are undefined.




Class DB
See Also Databases and Related Methods

APIRef

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