ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Event/Event.pm
(Generate patch)

Comparing Coro/Event/Event.pm (file contents):
Revision 1.16 by root, Thu May 8 00:55:30 2003 UTC vs.
Revision 1.43 by root, Fri Dec 1 19:41:06 2006 UTC

… …
6 6
7 use Coro; 7 use Coro;
8 use Coro::Event; 8 use Coro::Event;
9 9
10 sub keyboard : Coro { 10 sub keyboard : Coro {
11 my $w = Coro::Event->io(fd => *STDIN, poll => 'r'); 11 my $w = Coro::Event->io(fd => \*STDIN, poll => 'r');
12 while() { 12 while() {
13 print "cmd> "; 13 print "cmd> ";
14 my $ev = $w->next; my $cmd = <STDIN>; 14 my $ev = $w->next; my $cmd = <STDIN>;
15 unloop unless $cmd ne ""; 15 unloop unless $cmd ne "";
16 print "data> "; 16 print "data> ";
… …
32function - it will be managed by this module. 32function - it will be managed by this module.
33 33
34Your application should just create all necessary coroutines and then call 34Your application should just create all necessary coroutines and then call
35Coro::Event::loop. 35Coro::Event::loop.
36 36
37Please note that even programs or modules (such as
38L<Coro::Handle|Coro::Handle>) that use "traditional"
39event-based/continuation style will run more efficient with this module
40then when using only Event.
41
42=head1 WARNING
43
44Please note that Event does not support coroutines or threads. That
45means that you B<MUST NOT> block in an event callback. Again: In Event
46callbacks, you I<must never ever> call a Coroutine fucntion that blocks
47the current coroutine.
48
49While this seems to work superficially, it will eventually cause memory
50corruption.
51
52=head1 FUNCTIONS
53
37=over 4 54=over 4
38 55
39=cut 56=cut
40 57
41package Coro::Event; 58package Coro::Event;
42 59
43no warnings qw(uninitialized); 60no warnings;
44 61
45use Carp; 62use Carp;
63no warnings;
46 64
47use Coro; 65use Coro;
66use Coro::Timer;
48use Event qw(loop unloop); # we are re-exporting this, cooool! 67use Event qw(loop unloop); # we are re-exporting this, cooool!
49 68
50use base 'Exporter'; 69use XSLoader;
51 70
71use base Exporter::;
72
52@EXPORT = qw(loop unloop sweep reschedule); 73our @EXPORT = qw(loop unloop sweep);
53 74
54BEGIN { 75BEGIN {
55 $VERSION = 0.652; 76 our $VERSION = 1.9;
56 77
57 local $^W = 0; # avoid redefine warning for Coro::ready; 78 local $^W = 0; # avoid redefine warning for Coro::ready;
58 require XSLoader;
59 XSLoader::load Coro::Event, $VERSION; 79 XSLoader::load __PACKAGE__, $VERSION;
60} 80}
61 81
62=item $w = Coro::Event->flavour(args...) 82=item $w = Coro::Event->flavour (args...)
63 83
64Create and return a watcher of the given type. 84Create and return a watcher of the given type.
65 85
66Examples: 86Examples:
67 87
… …
74 94
75Return the next event of the event queue of the watcher. 95Return the next event of the event queue of the watcher.
76 96
77=cut 97=cut
78 98
79=item do_flavour(args...) 99=item do_flavour args...
80 100
81Create a watcher of the given type and immediately call it's next 101Create a watcher of the given type and immediately call it's next
82method. This is less efficient then calling the constructor once and the 102method. This is less efficient then calling the constructor once and the
83next method often, but it does save typing sometimes. 103next method often, but it does save typing sometimes.
84 104
… …
96 116
97 shift eq Coro::Event:: 117 shift eq Coro::Event::
98 or croak "event constructor \"Coro::Event->$flavour\" must be called as a static method"; 118 or croak "event constructor \"Coro::Event->$flavour\" must be called as a static method";
99 119
100 my $w = $new->($class, 120 my $w = $new->($class,
101 desc => $flavour, 121 desc => $flavour,
102 @_, 122 @_,
103 parked => 1, 123 parked => 1,
104 ); 124 );
125
105 _install_std_cb($w, $type); 126 _install_std_cb $w, $type;
106 bless $w, $class; # reblessing due to broken Event 127
128 # reblessing due to Event being broken
129 bless $w, $class
107 }; 130 };
108 *{ $flavour } = $coronew; 131 *{ $flavour } = $coronew;
109 *{"do_$flavour"} = sub { 132 *{"do_$flavour"} = sub {
110 unshift @_, Coro::Event::; 133 unshift @_, Coro::Event::;
111 my $e = (&$coronew)->next; 134 my $e = &$coronew->next;
112 $e->cancel; # $e = $e->w->cancel ($e == $e->w!) 135 $e->cancel; # $e === $e->w
113 $e; 136 $e
114 }; 137 };
115} 138}
116 139
117# double calls to avoid stack-cloning ;() 140# do schedule in perl to avoid forcign a stack allocation.
118# is about 10% slower, though. 141# this is about 10% slower, though.
119sub next($) { 142sub next($) {
120 &Coro::schedule if &_next; $_[0]; 143 &Coro::schedule while &_next;
144
145 $_[0]
121} 146}
122 147
123sub Coro::Event::w { $_[0] } 148sub Coro::Event::w { $_[0] }
124sub Coro::Event::prio { $_[0]{Coro::Event}[3] } 149sub Coro::Event::prio { $_[0]{Coro::Event}[3] }
125sub Coro::Event::hits { $_[0]{Coro::Event}[4] } 150sub Coro::Event::hits { $_[0]{Coro::Event}[4] }
… …
137into the Event dispatcher. 162into the Event dispatcher.
138 163
139=cut 164=cut
140 165
141sub sweep { 166sub sweep {
142 Event::one_event(0); # for now 167 Event::one_event 0; # for now
143} 168}
144 169
145=item $result = loop([$timeout]) 170=item $result = loop([$timeout])
146 171
147This is the version of C<loop> you should use instead of C<Event::loop> 172This is the version of C<loop> you should use instead of C<Event::loop>
148when using this module - it will ensure correct scheduling in the presence 173when using this module - it will ensure correct scheduling in the presence
149of events. 174of events.
150 175
151=begin comment
152
153Unlike loop's counterpart it is not an error when no watchers are active -
154loop silently returns in this case, as if unloop(undef) were called.
155
156=end comment
157
158=cut
159
160# no longer do something special - it's done internally now
161
162#sub loop(;$) {
163# #local $Coro::idle = $Coro::current;
164# #Coro::schedule; # become idle task, which is implicitly ready
165# &Event::loop;
166#}
167
168=item unloop([$result]) 176=item unloop([$result])
169 177
170Same as Event::unloop (provided here for your convinience only). 178Same as Event::unloop (provided here for your convinience only).
171 179
172=cut 180=cut
173 181
174$Coro::idle = new Coro sub { 182$Coro::idle = \&Event::one_event; # inefficient
175 while () {
176 Event::one_event; # inefficient
177 Coro::schedule;
178 }
179};
180
181# provide hooks for Coro::Timer
182
183package Coro::Timer;
184
185unless ($override) {
186 $override = 1;
187 *_new_timer = sub {
188 Event->timer(at => $_[0], cb => $_[1]);
189 };
190}
191 183
1921; 1841;
193 185
186=back
187
194=head1 AUTHOR 188=head1 AUTHOR
195 189
196 Marc Lehmann <pcg@goof.com> 190 Marc Lehmann <schmorp@schmorp.de>
197 http://www.goof.com/pcg/marc/ 191 http://home.schmorp.de/
198 192
199=cut 193=cut
200 194

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines