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<copyright> TOO DescriptorSet.
Written by <a href="mailto:tiggr@ics.ele.tue.nl">Pieter J. Schoenmakers</a>
Copyright (C) 1996 Pieter J. Schoenmakers.
This file is part of TOM. TOM is distributed under the terms of the
TOM License, a copy of which can be found in the TOM distribution; see
the file LICENSE.
<id>$Id: DescriptorSet.t,v 1.6 1998/01/05 01:16:40 tiggr Exp $</id>
</copyright>
implementation class
DescriptorSet: State, C
end;
implementation instance
DescriptorSet
{
<doc> The bitset of descriptors usable to select(2). </doc>
pointer set;
<doc> One beyond the highest descriptor that can be put in the set. </doc>
int cap;
<doc> One beyond the highest descriptor present in the set. </doc>
int beyond_last;
<doc> The number of descriptors present in the set. </doc>
int num;
<doc> The array of {Descriptor} objects. </doc>
MutableObjectArray descriptors;
<doc> The array of {DescriptorDelegate} objects. </doc>
MutableObjectArray delegates;
}
<doc> Deallocate the memory occupied by the {set}. </doc>
void
dealloc
{
free (set);
}
<doc> Designated initializer. </doc>
id (self)
init
{
descriptors = [MutableObjectArray new];
delegates = [MutableObjectArray new];
}
extern void
remove Descriptor descriptor;
extern void
set DescriptorDelegate delegate
at Descriptor descriptor;
<doc> Return a pointer to the low-level descriptor {set}, and the one
beyond the highest value in that set. </doc>
(pointer, int)
vitals
{
= (set, beyond_last);
}
/********** event dispatching **********/
<doc><h4>Event dispatching</h4></doc>
<doc> Dispatch a read event on the file descriptor {d}, to the delegate at
index {d} in the delegates. </doc>
void
readEvent int d
{
DescriptorReadDelegate delegate = delegates[d];
[delegate readEventOnDescriptor descriptors[d]];
}
<doc> Dispatch a write event on the file descriptor {d}, to the delegate at
index {d} in the delegates. </doc>
void
writeEvent int d
{
DescriptorWriteDelegate delegate = delegates[d];
[delegate writeEventOnDescriptor descriptors[d]];
}
end;
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