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Comparing Coro/Coro.pm (file contents):
Revision 1.14 by root, Tue Jul 17 02:21:56 2001 UTC vs.
Revision 1.21 by root, Sun Jul 22 03:24:10 2001 UTC

… …
23This module collection manages coroutines. Coroutines are similar to 23This module collection manages coroutines. Coroutines are similar to
24Threads but don't run in parallel. 24Threads but don't run in parallel.
25 25
26This module is still experimental, see the BUGS section below. 26This module is still experimental, see the BUGS section below.
27 27
28In this module, coroutines are defined as "callchain + lexical variables
29+ @_ + $_ + $@ + $^W), that is, a coroutine has it's own callchain, it's
30own set of lexicals and it's own set of perl's most important global
31variables.
32
33WARNING: When using this module, make sure that, at program end, no
34coroutines are still running OR just call exit before falling off the
35end. The reason for this is that some coroutine of yours might have called
36into a C function, and falling off the end of main:: results in returning
37to that C function instead if to the main C interpreter.
38
28=cut 39=cut
29 40
30package Coro; 41package Coro;
31 42
32use Coro::State; 43use Coro::State;
33 44
34use base Exporter; 45use base Exporter;
35 46
36$VERSION = 0.05; 47$VERSION = 0.10;
37 48
38@EXPORT = qw(async yield schedule terminate); 49@EXPORT = qw(async yield schedule terminate current);
39@EXPORT_OK = qw($current); 50@EXPORT_OK = qw($current);
40 51
41{ 52{
42 use subs 'async';
43
44 my @async; 53 my @async;
45 54
46 # this way of handling attributes simply is NOT scalable ;() 55 # this way of handling attributes simply is NOT scalable ;()
47 sub import { 56 sub import {
48 Coro->export_to_level(1, @_); 57 Coro->export_to_level(1, @_);
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52 my @attrs; 61 my @attrs;
53 for (@_) { 62 for (@_) {
54 if ($_ eq "Coro") { 63 if ($_ eq "Coro") {
55 push @async, $ref; 64 push @async, $ref;
56 } else { 65 } else {
57 push @attrs, @_; 66 push @attrs, $_;
58 } 67 }
59 } 68 }
60 return $old ? $old->($package, $name, @attrs) : @attrs; 69 return $old ? $old->($package, $ref, @attrs) : @attrs;
61 }; 70 };
62 } 71 }
63 72
64 sub INIT { 73 sub INIT {
65 async pop @async while @async; 74 &async(pop @async) while @async;
66 } 75 }
67} 76}
68 77
69=item $main 78=item $main
70 79
… …
72 81
73=cut 82=cut
74 83
75our $main = new Coro; 84our $main = new Coro;
76 85
77=item $current 86=item $current (or as function: current)
78 87
79The current coroutine (the last coroutine switched to). The initial value is C<$main> (of course). 88The current coroutine (the last coroutine switched to). The initial value is C<$main> (of course).
80 89
81=cut 90=cut
82 91
… …
84if ($current) { 93if ($current) {
85 $main->{specific} = $current->{specific}; 94 $main->{specific} = $current->{specific};
86} 95}
87 96
88our $current = $main; 97our $current = $main;
98
99sub current() { $current }
89 100
90=item $idle 101=item $idle
91 102
92The 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
93implementation prints "FATAL: deadlock detected" and exits. 104implementation prints "FATAL: deadlock detected" and exits.
… …
99 print STDERR "FATAL: deadlock detected\n"; 110 print STDERR "FATAL: deadlock detected\n";
100 exit(51); 111 exit(51);
101}; 112};
102 113
103# we really need priorities... 114# we really need priorities...
104## my @ready; #d#
105our @ready = (); # the ready queue. hehe, rather broken ;) 115my @ready; # the ready queue. hehe, rather broken ;)
106 116
107# static methods. not really. 117# static methods. not really.
108 118
109=head2 STATIC METHODS 119=head2 STATIC METHODS
110 120
… …
170 180
171=cut 181=cut
172 182
173sub terminate { 183sub terminate {
174 $current->{_results} = [@_]; 184 $current->{_results} = [@_];
185 delete $current->{_coro_state};
175 &schedule; 186 &schedule;
176} 187}
177 188
178=back 189=back
179 190
… …
221 232
222=cut 233=cut
223 234
2241; 2351;
225 236
226=head1 BUGS 237=head1 BUGS/LIMITATIONS
227 238
228 - could be faster, especially when the core would introduce special 239 - could be faster, especially when the core would introduce special
229 support for coroutines (like it does for threads). 240 support for coroutines (like it does for threads).
230 - there is still a memleak on coroutine termination that I could not 241 - there is still a memleak on coroutine termination that I could not
231 identify. Could be as small as a single SV. 242 identify. Could be as small as a single SV.
232 - this module is not well-tested. 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).
233 250
234=head1 SEE ALSO 251=head1 SEE ALSO
235 252
236L<Coro::Channel>, L<Coro::Cont>, L<Coro::Specific>, L<Coro::Semaphore>, 253L<Coro::Channel>, L<Coro::Cont>, L<Coro::Specific>, L<Coro::Semaphore>,
237L<Coro::Signal>, L<Coro::State>, L<Coro::Event>. 254L<Coro::Signal>, L<Coro::State>, L<Coro::Event>.

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