DbMpoolFile::put(void *pgaddr, u_int32_t flags);
The DbMpoolFile::put method indicates that the page to which pgaddr
refers can be evicted from the pool. The pgaddr argument must
be an address previously returned by DbMpoolFile::get.
The flags value must be set to 0 or by bitwise inclusively OR'ing together one or
more of the following values:
- Clear any previously set modification information (that is, don't bother
writing the page back to the source file).
- The page has been modified and must be written to the source file before
being evicted from the pool.
- The page is unlikely to be useful in the near future, and should be
discarded before other pages in the pool.
The DB_MPOOL_CLEAN and DB_MPOOL_DIRTY flags are
The DbMpoolFile::put 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.
The DbMpoolFile::put method may fail and throw an exception or return a non-zero error for the following conditions:
- The DB_MPOOL_DIRTY flag was set and the source file was not
opened for writing.
- An invalid flag value or parameter was specified.
The pgaddr argument does not refer to a page returned by
More than one of the DB_MPOOL_CLEAN and DB_MPOOL_DIRTY
flags was set.
The DbMpoolFile::put method may fail and throw an exception or return a non-zero error for errors specified for other Berkeley DB and C library or system methods.
If a catastrophic error has occurred, the DbMpoolFile::put method may fail and
either return DB_RUNRECOVERY or throw a
in which case all subsequent Berkeley DB calls will fail in the same way.
Memory Pools and Related Methods
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