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Comparing Coro/Coro.pm (file contents):
Revision 1.16 by root, Tue Jul 17 15:42:28 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 = 0.07; 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($current);
40 51
41{ 52{
42 use subs 'async';
43
44 my @async; 53 my @async;
45 54
46 # this way of handling attributes simply is NOT scalable ;() 55 # this way of handling attributes simply is NOT scalable ;()
47 sub import { 56 sub import {
48 Coro->export_to_level(1, @_); 57 Coro->export_to_level(1, @_);
… …
52 my @attrs; 61 my @attrs;
53 for (@_) { 62 for (@_) {
54 if ($_ 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.
… …
169 180
170=cut 181=cut
171 182
172sub terminate { 183sub terminate {
173 $current->{_results} = [@_]; 184 $current->{_results} = [@_];
185 delete $current->{_coro_state};
174 &schedule; 186 &schedule;
175} 187}
176 188
177=back 189=back
178 190
… …
220 232
221=cut 233=cut
222 234
2231; 2351;
224 236
225=head1 BUGS 237=head1 BUGS/LIMITATIONS
226 238
227 - could be faster, especially when the core would introduce special 239 - could be faster, especially when the core would introduce special
228 support for coroutines (like it does for threads). 240 support for coroutines (like it does for threads).
229 - 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
230 identify. Could be as small as a single SV. 242 identify. Could be as small as a single SV.
231 - 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).
232 250
233=head1 SEE ALSO 251=head1 SEE ALSO
234 252
235L<Coro::Channel>, L<Coro::Cont>, L<Coro::Specific>, L<Coro::Semaphore>, 253L<Coro::Channel>, L<Coro::Cont>, L<Coro::Specific>, L<Coro::Semaphore>,
236L<Coro::Signal>, L<Coro::State>, L<Coro::Event>. 254L<Coro::Signal>, L<Coro::State>, L<Coro::Event>.

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