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Berkeley DB: DbEnv::set_feedback
DbEnv::set_feedback
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#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 a flag value, and the third 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 in an appropriate manner.
The opcode argument may take on any of the following values:
- DB_RECOVER
- The environment is being recovered.
The DbEnv::set_feedback interface may be used to configure Berkeley DB at any time
during the life of the application.
The DbEnv::set_feedback 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.
Class
DbEnv
See Also
DbEnv::close,
DbEnv::err, DbEnv::errx
DbEnv::open,
DbEnv::remove,
DbEnv::set_alloc,
DbEnv::set_cachesize,
DbEnv::set_data_dir,
DbEnv::set_errcall,
DbEnv::set_errfile,
DbEnv::set_error_stream,
DbEnv::set_errpfx,
DbEnv::set_feedback,
DbEnv::set_flags,
DbEnv::set_mutexlocks,
DbEnv::set_pageyield,
DbEnv::set_paniccall,
DbEnv::set_panicstate,
DbEnv::set_recovery_init,
DbEnv::set_rpc_server,
DbEnv::set_region_init,
DbEnv::set_shm_key,
DbEnv::set_tas_spins,
DbEnv::set_tmp_dir,
DbEnv::set_verbose,
DbEnv::strerror
and
DbEnv::version.
Copyright Sleepycat Software
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