private int FindValidIndex()
{
Dictionary <int, InstanceIndex> procIndex = GetRegisteredDomains();
FilterValidProcesses(procIndex);
//所有已使用的索引位。
List <int> usedIndices = procIndex.Values.Select(ii => ii.Index).ToList();
int rtnIndex = -1;
for (int i = 1; i <= _maxInstaces; i++)
{
if (!usedIndices.Contains(i))
{
rtnIndex = i;
break;
}
}
if (rtnIndex > 0)
{
procIndex[CurrentBulkId] = new InstanceIndex(rtnIndex, Process.GetCurrentProcess().Id);
//更新共享内存区。
UpdateSharedMemory(procIndex);
}
return(rtnIndex);
}
private Dictionary <int, InstanceIndex> GetRegisteredDomains()
{
Dictionary <int, InstanceIndex> procIndex = new Dictionary <int, InstanceIndex>();
byte[] data = _bulk.ReadSharedData();
int pos = 0;
for (int i = 0; i < _maxInstaces; i++)
{
int bulkId = getIntFromBytes(data, ref pos);
if (bulkId <= 0)
{
break;
}
int index = getIntFromBytes(data, ref pos);
int processId = getIntFromBytes(data, ref pos);
procIndex[bulkId] = new InstanceIndex(index, processId);
}
return(procIndex);
}
