sourcemod/extensions/sqlite/sm_memtable.h
David Anderson 9f6a67ba17 initial import of sqlite extension
--HG--
extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%401209
2007-07-29 01:15:31 +00:00

98 lines
2.6 KiB
C++

/**
* vim: set ts=4 :
* ===============================================================
* SourceMod SQLite Driver Extension
* Copyright (C) 2004-2007 AlliedModders LLC. All rights reserved.
* ===============================================================
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Version: $Id$
*/
#ifndef _INCLUDE_SOURCEMOD_CORE_STRINGTABLE_H_
#define _INCLUDE_SOURCEMOD_CORE_STRINGTABLE_H_
class BaseMemTable
{
public:
BaseMemTable(unsigned int init_size);
~BaseMemTable();
public:
/**
* Allocates 'size' bytes of memory.
* Optionally outputs the address through 'addr'.
* Returns an index >= 0 on success, < 0 on failure.
*/
int CreateMem(unsigned int size, void **addr);
/**
* Given an index into the memory table, returns its address.
* Returns NULL if invalid.
*/
void *GetAddress(int index);
/**
* Scraps the memory table. For caching purposes, the memory
* is not freed, however subsequent calls to CreateMem() will
* begin at the first index again.
*/
void Reset();
private:
unsigned char *membase;
unsigned int size;
unsigned int tail;
};
class BaseStringTable
{
public:
BaseStringTable(unsigned int init_size);
~BaseStringTable();
public:
/**
* Adds a string to the string table and returns its index.
*/
int AddString(const char *string);
/**
* Given an index into the string table, returns the associated string.
*/
inline const char *GetString(int str)
{
return (const char *)m_table.GetAddress(str);
}
/**
* Scraps the string table. For caching purposes, the memory
* is not freed, however subsequent calls to AddString() will
* begin at the first index again.
*/
void Reset();
/**
* Returns the parent BaseMemTable that this string table uses.
*/
inline BaseMemTable *GetMemTable()
{
return &m_table;
}
private:
BaseMemTable m_table;
};
#endif //_INCLUDE_SOURCEMOD_CORE_STRINGTABLE_H_