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# Copyright (C) 2001-2005, Parrot Foundation.
=head1 NAME
examples/pasm/coroutine.pasm - Sample co-routines in Parrot
=head1 SYNOPSIS
% ./parrot examples/pasm/coroutine.pasm
=head1 DESCRIPTION
This shows you how to create two coroutines and C<invoke> them.
=head1 SEE ALSO
F<docs/ops/core.pod>
F<docs/pdds/pdd03_calling_conventions.pod>
=cut
.pcc_sub :main main:
# create a coro and save it on the user stack
.const 'Sub' P0 = "MYCOROUTINE"
# a coroutine carries state - clone it
clone P0, P0
# create a second coro
clone P1, P0
# Calling convention says P0 will contain the sub so..
print "Calling 1st co-routine\n"
invokecc P0
invokecc P0
invokecc P0
print "Calling 2nd co-routine\n"
invokecc P1
invokecc P1
invokecc P1
end
# A coroutine
.pcc_sub MYCOROUTINE:
print "Entry\n"
yield
print "Resumed\n"
yield
print "Done\n"
yield
# Local Variables:
# mode: pir
# fill-column: 100
# End:
# vim: expandtab shiftwidth=4 ft=pir:
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