mirror of
https://github.com/MariaDB/server.git
synced 2025-01-31 02:51:44 +01:00
58 lines
2.7 KiB
C++
58 lines
2.7 KiB
C++
/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
|
|
// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
|
|
#ident "$Id$"
|
|
/*======
|
|
This file is part of PerconaFT.
|
|
|
|
|
|
Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.
|
|
|
|
PerconaFT is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License, version 2,
|
|
as published by the Free Software Foundation.
|
|
|
|
PerconaFT is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
----------------------------------------
|
|
|
|
PerconaFT is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Affero General Public License, version 3,
|
|
as published by the Free Software Foundation.
|
|
|
|
PerconaFT is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Affero General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Affero General Public License
|
|
along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
|
|
======= */
|
|
|
|
#ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."
|
|
|
|
#pragma once
|
|
|
|
#include <toku_portability.h>
|
|
#include <toku_pthread.h>
|
|
|
|
/* Maintain a set of files for reading, with double buffering for the reads. */
|
|
|
|
/* A DBUFIO_FILESET is a set of files. The files are indexed from 0 to N-1, where N is specified when the set is created (and the files are also provided when the set is creaed). */
|
|
/* An implementation would typically use a separate thread or asynchronous I/O to fetch ahead data for each file. The system will typically fill two buffers of size M for each file. One buffer is being read out of using dbuf_read(), and the other buffer is either empty (waiting on the asynchronous I/O to start), being filled in by the asynchronous I/O mechanism, or is waiting for the caller to read data from it. */
|
|
typedef struct dbufio_fileset *DBUFIO_FILESET;
|
|
|
|
int create_dbufio_fileset (DBUFIO_FILESET *bfsp, int N, int fds[/*N*/], size_t bufsize, bool compressed);
|
|
|
|
int destroy_dbufio_fileset(DBUFIO_FILESET);
|
|
|
|
int dbufio_fileset_read (DBUFIO_FILESET bfs, int filenum, void *buf_v, size_t count, size_t *n_read);
|
|
|
|
int panic_dbufio_fileset(DBUFIO_FILESET, int error);
|
|
|
|
void dbufio_print(DBUFIO_FILESET);
|