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/* Copyright (c) 2003, 2007 MySQL AB
Use is subject to license terms
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; version 2 of the License.
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 */
#include "ObjectMap.hpp"
NdbObjectIdMap::NdbObjectIdMap(NdbMutex* mutex, Uint32 sz, Uint32 eSz)
{
m_size = 0;
m_firstFree = InvalidId;
m_map = 0;
m_mutex = mutex;
m_expandSize = eSz;
expand(sz);
#ifdef DEBUG_OBJECTMAP
ndbout_c("NdbObjectIdMap:::NdbObjectIdMap(%u)", sz);
#endif
}
NdbObjectIdMap::~NdbObjectIdMap()
{
free(m_map);
}
int NdbObjectIdMap::expand(Uint32 incSize)
{
NdbMutex_Lock(m_mutex);
Uint32 newSize = m_size + incSize;
MapEntry * tmp = (MapEntry*)realloc(m_map, newSize * sizeof(MapEntry));
if (likely(tmp != 0))
{
m_map = tmp;
for(Uint32 i = m_size; i < newSize; i++){
m_map[i].m_next = i + 1;
}
m_firstFree = m_size;
m_map[newSize-1].m_next = InvalidId;
m_size = newSize;
}
else
{
NdbMutex_Unlock(m_mutex);
g_eventLogger.error("NdbObjectIdMap::expand: realloc(%u*%u) failed",
newSize, sizeof(MapEntry));
return -1;
}
NdbMutex_Unlock(m_mutex);
return 0;
}
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