for( int i = directBufferStacks.length - 1; i >= 0; i -- )
{
ExpiringStack stack = directBufferStacks[i];
synchronized( stack )
{
stack.clear();
}
}
for( int i = heapBufferStacks.length - 1; i >= 0; i -- )
{
ExpiringStack stack = heapBufferStacks[i];