1 /***************************************************************************** 2 3 Copyright (c) 2011, 2011, Oracle and/or its affiliates. All Rights Reserved. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License, version 2.0, 7 as published by the Free Software Foundation. 8 9 This program is also distributed with certain software (including 10 but not limited to OpenSSL) that is licensed under separate terms, 11 as designated in a particular file or component or in included license 12 documentation. The authors of MySQL hereby grant you an additional 13 permission to link the program and your derivative works with the 14 separately licensed software that they have included with MySQL. 15 16 This program is distributed in the hope that it will be useful, 17 but WITHOUT ANY WARRANTY; without even the implied warranty of 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 GNU General Public License, version 2.0, for more details. 20 21 You should have received a copy of the GNU General Public License along with 22 this program; if not, write to the Free Software Foundation, Inc., 23 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA 24 25 *****************************************************************************/ 26 27 /**************************************************//** 28 @file buf/buf0dump.h 29 Implements a buffer pool dump/load. 30 31 Created April 08, 2011 Vasil Dimov 32 *******************************************************/ 33 34 #ifndef buf0dump_h 35 #define buf0dump_h 36 37 #include "univ.i" 38 39 /*****************************************************************//** 40 Wakes up the buffer pool dump/load thread and instructs it to start 41 a dump. This function is called by MySQL code via buffer_pool_dump_now() 42 and it should return immediately because the whole MySQL is frozen during 43 its execution. */ 44 UNIV_INTERN 45 void 46 buf_dump_start(); 47 /*============*/ 48 49 /*****************************************************************//** 50 Wakes up the buffer pool dump/load thread and instructs it to start 51 a load. This function is called by MySQL code via buffer_pool_load_now() 52 and it should return immediately because the whole MySQL is frozen during 53 its execution. */ 54 UNIV_INTERN 55 void 56 buf_load_start(); 57 /*============*/ 58 59 /*****************************************************************//** 60 Aborts a currently running buffer pool load. This function is called by 61 MySQL code via buffer_pool_load_abort() and it should return immediately 62 because the whole MySQL is frozen during its execution. */ 63 UNIV_INTERN 64 void 65 buf_load_abort(); 66 /*============*/ 67 68 /*****************************************************************//** 69 This is the main thread for buffer pool dump/load. It waits for an 70 event and when waked up either performs a dump or load and sleeps 71 again. 72 @return this function does not return, it calls os_thread_exit() */ 73 extern "C" UNIV_INTERN 74 os_thread_ret_t 75 DECLARE_THREAD(buf_dump_thread)( 76 /*============================*/ 77 void* arg); /*!< in: a dummy parameter 78 required by os_thread_create */ 79 80 #endif /* buf0dump_h */ 81