Drizzled Public API Documentation

write_buffer.cc
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00001 /* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
00002  *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
00003  *
00004  *  Copyright (C) 2010 Jay Pipes <jaypipes@gmail.com>
00005  *
00006  *  Authors:
00007  *
00008  *  Jay Pipes <jaypipes@gmail.com>
00009  *
00010  *  This program is free software; you can redistribute it and/or modify
00011  *  it under the terms of the GNU General Public License as published by
00012  *  the Free Software Foundation; either version 2 of the License, or
00013  *  (at your option) any later version.
00014  *
00015  *  This program is distributed in the hope that it will be useful,
00016  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00017  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00018  *  GNU General Public License for more details.
00019  *
00020  *  You should have received a copy of the GNU General Public License
00021  *  along with this program; if not, write to the Free Software
00022  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00023  */
00024 
00036 #include <config.h>
00037 #include "write_buffer.h"
00038 
00039 #include <drizzled/errmsg_print.h>
00040 #include <drizzled/gettext.h>
00041 
00042 #include <vector>
00043 
00044 using namespace std;
00045 using namespace drizzled;
00046 
00047 WriteBuffer::WriteBuffer() :
00048   buffer()
00049 {
00050   buffer.reserve(DEFAULT_WRITE_BUFFER_SIZE);
00051   pthread_mutex_init(&latch, NULL);
00052 }
00053 
00054 WriteBuffer::~WriteBuffer()
00055 {
00056   buffer.clear();
00057   pthread_mutex_destroy(&latch);
00058 }
00059 
00060 void WriteBuffer::resize(size_t new_size)
00061 {
00062   /* 
00063    * Attempt allocation of raw memory buffer for the 
00064    * requested size.  Does nothing if already allocated size
00065    * if greater...
00066    */
00067   if (buffer.capacity() >= new_size)
00068     return;
00069 
00070   buffer.reserve(new_size);
00071 }