From a5435ea78ab3d62223fd94ebd7c730f8ded30f1b Mon Sep 17 00:00:00 2001 From: unknown Date: Sat, 23 Oct 2004 11:32:52 +0400 Subject: Intermediate commit - just to make new files visible to bk in the new tree server-tools/instance-manager/Makefile.am: Fixed IM linking to avoid using both mysys and libmysql as the define the same symbols and therefore conflict server-tools/instance-manager/listener.cc: Added ability to listen network ports server-tools/instance-manager/listener.h: Various additions to the Listener_thread_args server-tools/instance-manager/log.cc: merge server-tools/instance-manager/log.h: merge server-tools/instance-manager/manager.cc: Fixes and additions to enable guardian functionality server-tools/instance-manager/manager.h: Changed manager() signature server-tools/instance-manager/mysqlmanager.cc: Various fixes server-tools/instance-manager/options.cc: Added handling of default values for new options in the Options struct. (such as default_user, default_password, monitoring_interval e.t.c) server-tools/instance-manager/options.h: Added new options to the Options struct sql/net_serv.cc: Added MYSQL_INSTANCE_MANAGER defines to enable alarm handling in the IM server-tools/instance-manager/buffer.cc: Simple implementation of variable-length buffer server-tools/instance-manager/command.cc: Abstract command. All commands are derived from Command class server-tools/instance-manager/commands.h: Interfaces for all commands we have server-tools/instance-manager/factory.cc: Commands factory. This class hides command instantiation. The idea is to handle various protocols this way. (different commands for different protocols server-tools/instance-manager/guardian.cc: Guardian thread implementation (monitor and restart instances in case of a failure server-tools/instance-manager/guardian.h: Guardian_thread and Guardian_thread_args class interface. The Guardian_thread is responsible for monitoring and restarting instances server-tools/instance-manager/instance.cc: Instance class contains methods and data to manage a single instance server-tools/instance-manager/instance.h: This file contains class an instance class interface. The class is responsible for starting/stopping an instance server-tools/instance-manager/instance_map.cc: The instance repository. This class is also responsible for initialization of Instance class objects. server-tools/instance-manager/instance_options.cc: The Instance_options class contains all methods to get and handle options of an instance server-tools/instance-manager/mysql_connection.cc: The class responsible for handling MySQL client/server protocol connections server-tools/instance-manager/mysql_manager_error.h: The list of Instance Manger-specific errors server-tools/instance-manager/parse.cc: Simple query parser server-tools/instance-manager/parse.h: Parser interface server-tools/instance-manager/protocol.cc: Here implemented functions used to handle mysql client/server protocol server-tools/instance-manager/protocol.h: Interface for MySQL client/server protocol server-tools/instance-manager/thread_registry.cc: Thread registry stores information about every thread. It's main function is to provide graceful shutdown for all threads. server-tools/instance-manager/user_map.h: User map contains hash with user names and passwords --- server-tools/instance-manager/buffer.cc | 91 +++++++++++++++++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 server-tools/instance-manager/buffer.cc (limited to 'server-tools/instance-manager/buffer.cc') diff --git a/server-tools/instance-manager/buffer.cc b/server-tools/instance-manager/buffer.cc new file mode 100644 index 00000000000..39e255300cf --- /dev/null +++ b/server-tools/instance-manager/buffer.cc @@ -0,0 +1,91 @@ +/* Copyright (C) 2004 MySQL AB + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program 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 this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +#ifdef __GNUC__ +#pragma implementation +#endif + +#include "buffer.h" +#include + + +/* + Puts the given string to the buffer. + + SYNOPSYS + put_to_buffer() + start_pos start position in the buffer + string string to be put in the buffer + len_arg the length of the string. This way we can avoid some + strlens. + + DESCRIPTION + + The method puts a string into the buffer, starting from start_pos . + In the case when the buffer is too small it reallocs the buffer. The + total size of the buffer is restricted with 16. + + RETURN + 0 - ok + 1 - The buffer came to 16Mb barrier +*/ + +int Buffer::put_to_buffer(char *start_pos, const char *string, uint len_arg) +{ + if (check_and_add(start_pos - buffer, len_arg)) + return 1; + + strnmov(start_pos, string, len_arg); + return 0; +} + + +/* + Checks whether the current buffer size is ok to put a string of the length + "len_arg" starting from "position" and reallocs it if no. + + SYNOPSYS + check_and_add() + position the number starting byte on the buffer to store a buffer + len_arg the length of the string. + + DESCRIPTION + + The method checks whether it is possible to pus a string of teh "len_arg" + length into the buffer, starting from "position" byte. In the case when the + buffer is too small it reallocs the buffer. The total size of the buffer is + restricted with 16 Mb. + + RETURN + 0 - ok + 1 - The buffer came to 16Mb barrier +*/ + +int Buffer::check_and_add(uint position, uint len_arg) +{ + if (position + len_arg >= MAX_BUFFER_SIZE) + return 1; + + if (position + len_arg>= buffer_size) + { + buffer= (char *) realloc(buffer, + min(MAX_BUFFER_SIZE, + max((uint) buffer_size*1.5, + position + len_arg))); + buffer_size= (uint) buffer_size*1.5; + } + return 0; +} -- cgit v1.2.1