1 /* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ 2 // vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4: 3 #ident "$Id$" 4 /*====== 5 This file is part of PerconaFT. 6 7 8 Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved. 9 10 PerconaFT is free software: you can redistribute it and/or modify 11 it under the terms of the GNU General Public License, version 2, 12 as published by the Free Software Foundation. 13 14 PerconaFT is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with PerconaFT. If not, see <http://www.gnu.org/licenses/>. 21 22 ---------------------------------------- 23 24 PerconaFT is free software: you can redistribute it and/or modify 25 it under the terms of the GNU Affero General Public License, version 3, 26 as published by the Free Software Foundation. 27 28 PerconaFT is distributed in the hope that it will be useful, 29 but WITHOUT ANY WARRANTY; without even the implied warranty of 30 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 31 GNU Affero General Public License for more details. 32 33 You should have received a copy of the GNU Affero General Public License 34 along with PerconaFT. If not, see <http://www.gnu.org/licenses/>. 35 ======= */ 36 37 #ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved." 38 39 #pragma once 40 41 #include <ft/log_header.h> 42 43 struct toku_logcursor; 44 typedef struct toku_logcursor *TOKULOGCURSOR; 45 46 // All routines return 0 on success 47 48 // toku_logcursor_create() 49 // - creates a logcursor (lc) 50 // - following toku_logcursor_create() 51 // if toku_logcursor_next() is called, it returns the first entry in the log 52 // if toku_logcursor_prev() is called, it returns the last entry in the log 53 int toku_logcursor_create(TOKULOGCURSOR *lc, const char *log_dir); 54 // toku_logcursor_create_for_file() 55 // - creates a logcusor (lc) that only knows about the file log_file 56 int toku_logcursor_create_for_file(TOKULOGCURSOR *lc, const char *log_dir, const char *log_file); 57 // toku_logcursor_destroy() 58 // - frees all resources associated with the logcursor, including the log_entry 59 // associated with the latest cursor action 60 int toku_logcursor_destroy(TOKULOGCURSOR *lc); 61 62 // toku_logcursor_[next,prev,first,last] take care of malloc'ing and free'ing log_entrys. 63 // - routines NULL out the **le pointers on entry, then set the **le pointers to 64 // the malloc'ed entries when successful, 65 int toku_logcursor_next(TOKULOGCURSOR lc, struct log_entry **le); 66 int toku_logcursor_prev(TOKULOGCURSOR lc, struct log_entry **le); 67 68 int toku_logcursor_first(const TOKULOGCURSOR lc, struct log_entry **le); 69 int toku_logcursor_last(const TOKULOGCURSOR lc, struct log_entry **le); 70 71 // return 0 if log exists, ENOENT if no log 72 int toku_logcursor_log_exists(const TOKULOGCURSOR lc); 73 74 void toku_logcursor_print(TOKULOGCURSOR lc); 75