DB_MPOOLFILE->put(DB_MPOOLFILE *mpf, void *pgaddr, u_int32_t flags);
The DB_MPOOLFILE->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 DB_MPOOLFILE->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 DB_MPOOLFILE->put method returns a non-zero error value on failure and 0 on success.
The DB_MPOOLFILE->put method may fail and 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 DB_MPOOLFILE->put method may fail and return a non-zero error for errors specified for other Berkeley DB and C library or system functions.
If a catastrophic error has occurred, the DB_MPOOLFILE->put method may fail and
in which case all subsequent Berkeley DB calls will fail in the same way.
Memory Pools and Related Methods
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