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Comparing cvsroot/Coro/Coro.pm (file contents):
Revision 1.13 by root, Tue Jul 17 00:24:14 2001 UTC vs.
Revision 1.21 by root, Sun Jul 22 03:24:10 2001 UTC

… …
18 18
19 yield; 19 yield;
20 20
21=head1 DESCRIPTION 21=head1 DESCRIPTION
22 22
23This module collection manages coroutines. Coroutines are similar to
24Threads but don't run in parallel.
25
26This module is still experimental, see the BUGS section below.
27
28In this module, coroutines are defined as "callchain + lexical variables
29+ @_ + $_ + $@ + $^W), that is, a coroutine has it's own callchain, it's
30own set of lexicals and it's own set of perl's most important global
31variables.
32
33WARNING: When using this module, make sure that, at program end, no
34coroutines are still running OR just call exit before falling off the
35end. The reason for this is that some coroutine of yours might have called
36into a C function, and falling off the end of main:: results in returning
37to that C function instead if to the main C interpreter.
38
23=cut 39=cut
24 40
25package Coro; 41package Coro;
26 42
27use Coro::State; 43use Coro::State;
28 44
29use base Exporter; 45use base Exporter;
30 46
31$VERSION = 0.05; 47$VERSION = 0.10;
32 48
33@EXPORT = qw(async yield schedule terminate); 49@EXPORT = qw(async yield schedule terminate current);
34@EXPORT_OK = qw($current); 50@EXPORT_OK = qw($current);
35 51
36{ 52{
37 use subs 'async';
38
39 my @async; 53 my @async;
40 54
41 # this way of handling attributes simply is NOT scalable ;() 55 # this way of handling attributes simply is NOT scalable ;()
42 sub import { 56 sub import {
43 Coro->export_to_level(1, @_); 57 Coro->export_to_level(1, @_);
… …
47 my @attrs; 61 my @attrs;
48 for (@_) { 62 for (@_) {
49 if ($_ eq "Coro") { 63 if ($_ eq "Coro") {
50 push @async, $ref; 64 push @async, $ref;
51 } else { 65 } else {
52 push @attrs, @_; 66 push @attrs, $_;
53 } 67 }
54 } 68 }
55 return $old ? $old->($package, $name, @attrs) : @attrs; 69 return $old ? $old->($package, $ref, @attrs) : @attrs;
56 }; 70 };
57 } 71 }
58 72
59 sub INIT { 73 sub INIT {
60 async pop @async while @async; 74 &async(pop @async) while @async;
61 } 75 }
62} 76}
63 77
64=item $main 78=item $main
65 79
… …
67 81
68=cut 82=cut
69 83
70our $main = new Coro; 84our $main = new Coro;
71 85
72=item $current 86=item $current (or as function: current)
73 87
74The current coroutine (the last coroutine switched to). The initial value is C<$main> (of course). 88The current coroutine (the last coroutine switched to). The initial value is C<$main> (of course).
75 89
76=cut 90=cut
77 91
… …
79if ($current) { 93if ($current) {
80 $main->{specific} = $current->{specific}; 94 $main->{specific} = $current->{specific};
81} 95}
82 96
83our $current = $main; 97our $current = $main;
98
99sub current() { $current }
84 100
85=item $idle 101=item $idle
86 102
87The coroutine to switch to when no other coroutine is running. The default 103The coroutine to switch to when no other coroutine is running. The default
88implementation prints "FATAL: deadlock detected" and exits. 104implementation prints "FATAL: deadlock detected" and exits.
… …
94 print STDERR "FATAL: deadlock detected\n"; 110 print STDERR "FATAL: deadlock detected\n";
95 exit(51); 111 exit(51);
96}; 112};
97 113
98# we really need priorities... 114# we really need priorities...
99## my @ready; #d#
100our @ready = (); # the ready queue. hehe, rather broken ;) 115my @ready; # the ready queue. hehe, rather broken ;)
101 116
102# static methods. not really. 117# static methods. not really.
103 118
104=head2 STATIC METHODS 119=head2 STATIC METHODS
105 120
… …
165 180
166=cut 181=cut
167 182
168sub terminate { 183sub terminate {
169 $current->{_results} = [@_]; 184 $current->{_results} = [@_];
185 delete $current->{_coro_state};
170 &schedule; 186 &schedule;
171} 187}
172 188
173=back 189=back
174 190
… …
216 232
217=cut 233=cut
218 234
2191; 2351;
220 236
237=head1 BUGS/LIMITATIONS
238
239 - could be faster, especially when the core would introduce special
240 support for coroutines (like it does for threads).
241 - there is still a memleak on coroutine termination that I could not
242 identify. Could be as small as a single SV.
243 - this module is not well-tested.
244 - if variables or arguments "disappear" (become undef) or become
245 corrupted please contact the author so he cen iron out the
246 remaining bugs.
247 - this module is not thread-safe. You must only ever use this module from
248 the same thread (this requirement might be loosened in the future to
249 allow per-thread schedulers, but Coro::State does not yet allow this).
250
221=head1 SEE ALSO 251=head1 SEE ALSO
222 252
223L<Coro::Channel>, L<Coro::Cont>, L<Coro::Specific>, L<Coro::Semaphore>, 253L<Coro::Channel>, L<Coro::Cont>, L<Coro::Specific>, L<Coro::Semaphore>,
224L<Coro::Signal>, L<Coro::State>, L<Coro::Event>. 254L<Coro::Signal>, L<Coro::State>, L<Coro::Event>.
225 255

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