Initialize a cursor for a given transaction and database. */

Return the page number of \b mp which may be sub-page, for debug output */

Check both meta pages to see which one is newer. * @param[in] env the environment handle * @return newest #MDB_meta. */

Return the data associated with a given node. * @param[in] mc The cursor for this operation. * @param[in] leaf The node being read. * @param[out] d

Search for the page a given key should be in. * Push it and its parent pages on the cursor stack. * @param[in,out] mc the cursor for this operation.

Copy the contents of a cursor. * @param[in] csrc The cursor to copy from. * @param[out] cdst The cursor to copy to. */

Find a sibling for a page. * Replaces the page at the top of the cursor's stack with the * specified sibling, if one exists. * @param[in] mc The cu

Add a node to the page pointed to by the cursor. * Set #MDB_TXN_ERROR on failure. * @param[in] mc The cursor for this operation. * @param[in] indx

Copy the used portions of a non-overflow page. * @param[in] dst page to copy into * @param[in] src page to copy from * @param[in] psize size of a p

Final setup of a sorted-dups cursor. * Sets up the fields that depend on the data from the main cursor. * @param[in] mc The main cursor whose sorted

Move the cursor to the first item in the database. */

zero out decrypted pages before freeing them */

Replace the key for a branch node with a new key. * Set #MDB_TXN_ERROR on failure. * @param[in] mc Cursor pointing to the node to operate on. * @pa

Delete the specified node from a page. * @param[in] mc Cursor pointing to the node to delete. * @param[in] ksize The size of a node. Only used if th

Allocate memory for a page. * Re-use old malloc'd pages first for singletons, otherwise just malloc. * Set #MDB_TXN_ERROR on failure. */

Touch a page: make it dirty and re-insert into tree with updated pgno. * Set #MDB_TXN_ERROR on failure. * @param[in] mc cursor pointing to the page

End a transaction, except successful commit of a nested transaction. * May be called twice for readonly txns: First reset it, then abort. * @param[i

Move the cursor to the last item in the database. */

Pop a page off the top of the cursor's stack. */

Set the cursor on a specific data item. */

Give buffer and/or #MDB_EOF to writer thread, await unused buffer. * * @param[in] my control structure. * @param[in] adjust (1 to hand off 1 buf

Open an LMDB file. * @param[in] env The LMDB environment. * @param[in,out] fname Path from from #mdb_fname_init(). A suffix is * appended if neces

Push a page onto the top of the cursor's stack. * Set #MDB_TXN_ERROR on failure. */

Free an encrypted dirty page * We can't check if it's an overflow page, * caller must tell us how many are being freed. */

Init #MDB_env.me_mutexname[] except the char which #MUTEXNAME() will set. * Changes to this code must be reflected in #MDB_LOCK_FORMAT. */

Allocate and initialize new pages for a database. * Set #MDB_TXN_ERROR on failure. * @param[in] mc a cursor on the database being added to. * @para

Common code for #mdb_txn_begin() and #mdb_txn_renew(). * @param[in] txn the transaction handle to initialize * @return 0 on success, non-zero on fai

Move the cursor to the next data item. */

Close this write txn's cursors, give parent txn's cursors back to parent. * @param[in] txn the transaction handle. * @param[in] merge true to keep c

Set the default comparison functions for a database. * Called immediately after a database is opened to set the defaults. * The user can then overri

Display a key in hexadecimal and return the address of the result. * @param[in] key the key to display * @param[in] buf the buffer to write into. Sh

Free a dirty page */

Try to get exclusive lock, otherwise shared. * Maintain *excl = -1: no/unknown lock, 0: shared, 1: exclusive. */

Search for key within a page, using binary search. * Returns the smallest entry larger or equal to the key. * If exactp is non-null, stores whether

Allocate page numbers and memory for writing. Maintain me_pglast, * me_pghead and mt_next_pgno. Set #MDB_TXN_ERROR on failure. * * If there are f

Add a page to the txn's dirty list, if there is one */

Free a single page. * Saves single pages to a list, for future reuse. * (This is not used for multi-page overflow pages.) */

Loosen or free a single page. * Saves single pages to a list for future reuse * in this same txn. It has been pulled from the freeDB * and already

Search for the lowest key under the current branch page. * This just bypasses a NUMKEYS check in the current page * before calling mdb_page_search_r

Finish #mdb_page_search() / #mdb_page_search_lowest(). * The cursor is at the root page, set up the rest of it. */

Set or check a pid lock. Set returns 0 on success. * Check returns 0 if the process is certainly dead, nonzero if it may * be alive (the lock exists