Berkeley DB

DbEnv::set_feedback

						#include <db_cxx.h>
						int
						DbEnv::set_feedback(
						void (*db_feedback_fcn)(DbEnv *, int opcode, int pct));
					

Description

Some operations performed by the Berkeley DB library can take non-trivial amounts of time. The DbEnv::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 method. This method must be declared with three arguments: the first will be a reference to the enclosing environment; the second will be a flag value; and the third will be the percent of the operation that has been completed, specified as an integer value between 0 and 100. It is up to the callback method to display this information ...