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Comparing Coro/Coro.pm (file contents):
Revision 1.45 by root, Mon Dec 10 21:18:28 2001 UTC vs.
Revision 1.58 by pcg, Fri Feb 13 23:17:41 2004 UTC

… …
30 30
31=cut 31=cut
32 32
33package Coro; 33package Coro;
34 34
35no warnings qw(uninitialized); 35BEGIN { eval { require warnings } && warnings->unimport ("uninitialized") }
36 36
37use Coro::State; 37use Coro::State;
38 38
39use vars qw($idle $main $current);
40
39use base Exporter; 41use base Exporter;
40 42
41$VERSION = 0.531; 43$VERSION = 0.95;
42 44
43@EXPORT = qw(async cede schedule terminate current); 45@EXPORT = qw(async cede schedule terminate current);
44%EXPORT_TAGS = ( 46%EXPORT_TAGS = (
45 prio => [qw(PRIO_MAX PRIO_HIGH PRIO_NORMAL PRIO_LOW PRIO_IDLE PRIO_MIN)], 47 prio => [qw(PRIO_MAX PRIO_HIGH PRIO_NORMAL PRIO_LOW PRIO_IDLE PRIO_MIN)],
46); 48);
… …
83 85
84This coroutine represents the main program. 86This coroutine represents the main program.
85 87
86=cut 88=cut
87 89
88our $main = new Coro; 90$main = new Coro;
89 91
90=item $current (or as function: current) 92=item $current (or as function: current)
91 93
92The current coroutine (the last coroutine switched to). The initial value is C<$main> (of course). 94The current coroutine (the last coroutine switched to). The initial value is C<$main> (of course).
93 95
… …
96# maybe some other module used Coro::Specific before... 98# maybe some other module used Coro::Specific before...
97if ($current) { 99if ($current) {
98 $main->{specific} = $current->{specific}; 100 $main->{specific} = $current->{specific};
99} 101}
100 102
101our $current = $main; 103$current = $main;
102 104
103sub current() { $current } 105sub current() { $current }
104 106
105=item $idle 107=item $idle
106 108
… …
108implementation prints "FATAL: deadlock detected" and exits. 110implementation prints "FATAL: deadlock detected" and exits.
109 111
110=cut 112=cut
111 113
112# should be done using priorities :( 114# should be done using priorities :(
113our $idle = new Coro sub { 115$idle = new Coro sub {
114 print STDERR "FATAL: deadlock detected\n"; 116 print STDERR "FATAL: deadlock detected\n";
115 exit(51); 117 exit(51);
116}; 118};
117 119
118# this coroutine is necessary because a coroutine 120# this coroutine is necessary because a coroutine
119# cannot destroy itself. 121# cannot destroy itself.
120my @destroy; 122my @destroy;
121my $manager; 123my $manager;
122$manager = new Coro sub { 124$manager = new Coro sub {
123 while() { 125 while () {
124 # by overwriting the state object with the manager we destroy it 126 # by overwriting the state object with the manager we destroy it
125 # while still being able to schedule this coroutine (in case it has 127 # while still being able to schedule this coroutine (in case it has
126 # been readied multiple times. this is harmless since the manager 128 # been readied multiple times. this is harmless since the manager
127 # can be called as many times as neccessary and will always 129 # can be called as many times as neccessary and will always
128 # remove itself from the runqueue 130 # remove itself from the runqueue
… …
155 # create a new coroutine that just prints its arguments 157 # create a new coroutine that just prints its arguments
156 async { 158 async {
157 print "@_\n"; 159 print "@_\n";
158 } 1,2,3,4; 160 } 1,2,3,4;
159 161
160The coderef you submit MUST NOT be a closure that refers to variables
161in an outer scope. This does NOT work. Pass arguments into it instead.
162
163=cut 162=cut
164 163
165sub async(&@) { 164sub async(&@) {
166 my $pid = new Coro @_; 165 my $pid = new Coro @_;
167 $manager->ready; # this ensures that the stack is cloned from the manager 166 $manager->ready; # this ensures that the stack is cloned from the manager
… …
267 266
268=item $oldprio = $process->prio($newprio) 267=item $oldprio = $process->prio($newprio)
269 268
270Sets (or gets, if the argument is missing) the priority of the 269Sets (or gets, if the argument is missing) the priority of the
271process. Higher priority processes get run before lower priority 270process. Higher priority processes get run before lower priority
272processes. Priorities are smalled signed integer (currently -4 .. +3), 271processes. Priorities are small signed integers (currently -4 .. +3),
273that you can refer to using PRIO_xxx constants (use the import tag :prio 272that you can refer to using PRIO_xxx constants (use the import tag :prio
274to get then): 273to get then):
275 274
276 PRIO_MAX > PRIO_HIGH > PRIO_NORMAL > PRIO_LOW > PRIO_IDLE > PRIO_MIN 275 PRIO_MAX > PRIO_HIGH > PRIO_NORMAL > PRIO_LOW > PRIO_IDLE > PRIO_MIN
277 3 > 1 > 0 > -1 > -3 > -4 276 3 > 1 > 0 > -1 > -3 > -4
… …
325 324
3261; 3251;
327 326
328=head1 BUGS/LIMITATIONS 327=head1 BUGS/LIMITATIONS
329 328
330 - you must make very sure that no coro is still active on global destruction. 329 - you must make very sure that no coro is still active on global
331 very bad things might happen otherwise (usually segfaults). 330 destruction. very bad things might happen otherwise (usually segfaults).
331
332 - this module is not thread-safe. You should only ever use this module from 332 - this module is not thread-safe. You should only ever use this module
333 the same thread (this requirement might be loosened in the future to 333 from the same thread (this requirement might be losened in the future
334 allow per-thread schedulers, but Coro::State does not yet allow this). 334 to allow per-thread schedulers, but Coro::State does not yet allow
335 this).
335 336
336=head1 SEE ALSO 337=head1 SEE ALSO
337 338
338L<Coro::Channel>, L<Coro::Cont>, L<Coro::Specific>, L<Coro::Semaphore>, 339L<Coro::Channel>, L<Coro::Cont>, L<Coro::Specific>, L<Coro::Semaphore>,
339L<Coro::Signal>, L<Coro::State>, L<Coro::Event>, L<Coro::RWLock>, 340L<Coro::Signal>, L<Coro::State>, L<Coro::Timer>, L<Coro::Event>,
340L<Coro::Handle>, L<Coro::Socket>. 341L<Coro::L<Coro::RWLock>, Handle>, L<Coro::Socket>.
341 342
342=head1 AUTHOR 343=head1 AUTHOR
343 344
344 Marc Lehmann <pcg@goof.com> 345 Marc Lehmann <pcg@goof.com>
345 http://www.goof.com/pcg/marc/ 346 http://www.goof.com/pcg/marc/

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