1 /***************************************************************************** 2 3 Copyright (c) 1995, 2009, 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 include/os0proc.h 29 The interface to the operating system 30 process control primitives 31 32 Created 9/30/1995 Heikki Tuuri 33 *******************************************************/ 34 35 #ifndef os0proc_h 36 #define os0proc_h 37 38 #include "univ.i" 39 40 #ifdef UNIV_LINUX 41 #include <sys/ipc.h> 42 #include <sys/shm.h> 43 #endif 44 45 typedef void* os_process_t; 46 typedef unsigned long int os_process_id_t; 47 48 extern ibool os_use_large_pages; 49 /* Large page size. This may be a boot-time option on some platforms */ 50 extern ulint os_large_page_size; 51 52 /****************************************************************//** 53 Converts the current process id to a number. It is not guaranteed that the 54 number is unique. In Linux returns the 'process number' of the current 55 thread. That number is the same as one sees in 'top', for example. In Linux 56 the thread id is not the same as one sees in 'top'. 57 @return process id as a number */ 58 UNIV_INTERN 59 ulint 60 os_proc_get_number(void); 61 /*====================*/ 62 /****************************************************************//** 63 Allocates large pages memory. 64 @return allocated memory */ 65 UNIV_INTERN 66 void* 67 os_mem_alloc_large( 68 /*===============*/ 69 ulint* n); /*!< in/out: number of bytes */ 70 /****************************************************************//** 71 Frees large pages memory. */ 72 UNIV_INTERN 73 void 74 os_mem_free_large( 75 /*==============*/ 76 void *ptr, /*!< in: pointer returned by 77 os_mem_alloc_large() */ 78 ulint size); /*!< in: size returned by 79 os_mem_alloc_large() */ 80 81 #ifndef UNIV_NONINL 82 #include "os0proc.ic" 83 #endif 84 85 #endif 86