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Berkeley DB: DbEnv::set_max_openfd
DbEnv::set_max_openfd
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#include <db_cxx.h>
int
DbEnv::memp_set_max_openfd(int maxopenfd);
int
DbEnv::memp_get_max_openfd(int *maxopenfdp);
Description: DbEnv::set_max_openfd
The DbEnv::set_max_openfd method limits the number of file descriptors
the library will open concurrently when flushing dirty pages from the
cache.
The DbEnv::set_max_openfd 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.
Parameters
- maxopenfd
- The maximum number of file descriptors that may be concurrently opened
by the library when flushing dirty pages from the cache.
Errors
The DbEnv::set_max_openfd method
may fail and throw
DbException,
encapsulating one of the following non-zero errors, or return one of
the following non-zero errors:
- EINVAL
- An
invalid flag value or parameter was specified.
Description: DbEnv::get_max_openfd
The DbEnv::get_max_openfd method returns the maximum number of file descriptors open.
The DbEnv::get_max_openfd method may be called at any time during the life of the
application.
The DbEnv::get_max_openfd 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.
Parameters
- maxopenfdp
- The DbEnv::get_max_openfd method returns the
maximum number of file descriptors open in maxopenfdp.
Class
DbEnv, DbMpoolFile
See Also
Memory Pools and Related Methods
Copyright (c) 1996-2004 Sleepycat Software, Inc. - All rights reserved.
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