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parrotrunningthread.pmc
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parrotrunningthread.pmc
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/*
Copyright (C) 2006-2008, Parrot Foundation.
$Id$
=head1 NAME
src/pmc/parrotrunningthread.pmc -- Represents a running Parrot Thread.
=head1 DESCRIPTION
This type represents a running parrot thread.
It provides the following methods:
- join
- detach
- kill
Note that a running thread object becomes invalid when a thread
finishes while detached or joined. Further operations on the
object may have unexpected behavior, such as manipulating an
unrelated thread.
=head2 Methods
=over 4
=cut
*/
#include "parrot/embed.h"
#define PMC_tid(x) (PARROT_PARROTRUNNINGTHREAD(x))->tid
pmclass ParrotRunningThread no_ro auto_attrs {
ATTR INTVAL tid; /* thread id */
/*
=item C<void init()>
Create a new, invalid handle to a running thread.
=cut
*/
VTABLE void init() {
PMC_tid(SELF) = -1;
}
/*
=item C<void init_pmc(PMC *tid)>
Create a new running thread referring to the thread with
the Thread ID specified in C<tid>.
=cut
*/
VTABLE void init_pmc(PMC *tid) {
PMC_tid(SELF) = VTABLE_get_integer(INTERP, tid);
}
/*
=item C<INTVAL get_integer()>
Return the thread ID of this thread.
=cut
*/
VTABLE INTVAL get_integer() {
return PMC_tid(SELF);
}
/*
=item C<void set_integer_native(INTVAL new_tid)>
Change the thread ID we refer to to C<new_tid>.
=cut
*/
VTABLE void set_integer_native(INTVAL new_tid) {
if (new_tid < 0)
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_INTERP_ERROR,
"Attempt to set invalid thread id %d", (int)new_tid);
PMC_tid(SELF) = new_tid;
}
/*
=item C<METHOD join()>
Join the thread, returning whatever its main method returns.
=cut
*/
METHOD join() {
PMC *ret = pt_thread_join(INTERP,
(UINTVAL)VTABLE_get_integer(INTERP, SELF));
/* invalidate self */
PMC_tid(SELF) = -1;
RETURN(PMC *ret);
}
/*
=item C<METHOD detach()>
Detach the thread so it cannot be joined and will free its resources
immediately when it exits.
=cut
*/
METHOD detach() {
pt_thread_detach((UINTVAL)VTABLE_get_integer(INTERP, SELF));
}
/*
=item C<METHOD kill()>
Terminate a running thread.
=cut
*/
METHOD kill() {
pt_thread_kill((UINTVAL)VTABLE_get_integer(INTERP, SELF));
}
}
/*
=back
=cut
*/
/*
* Local variables:
* c-file-style: "parrot"
* End:
* vim: expandtab shiftwidth=4:
*/