… | |
… | |
30 | |
30 | |
31 | =cut |
31 | =cut |
32 | |
32 | |
33 | package Coro; |
33 | package Coro; |
34 | |
34 | |
35 | no warnings qw(uninitialized); |
35 | BEGIN { eval { require warnings } && warnings->unimport ("uninitialized") } |
36 | |
36 | |
37 | use Coro::State; |
37 | use Coro::State; |
38 | |
38 | |
|
|
39 | use vars qw($idle $main $current); |
|
|
40 | |
39 | use base Exporter; |
41 | use base Exporter; |
40 | |
42 | |
41 | $VERSION = 0.52; |
43 | $VERSION = "0.9"; |
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 | ); |
… | |
… | |
75 | }; |
77 | }; |
76 | } |
78 | } |
77 | |
79 | |
78 | } |
80 | } |
79 | |
81 | |
|
|
82 | =over 4 |
|
|
83 | |
80 | =item $main |
84 | =item $main |
81 | |
85 | |
82 | This coroutine represents the main program. |
86 | This coroutine represents the main program. |
83 | |
87 | |
84 | =cut |
88 | =cut |
85 | |
89 | |
86 | our $main = new Coro; |
90 | $main = new Coro; |
87 | |
91 | |
88 | =item $current (or as function: current) |
92 | =item $current (or as function: current) |
89 | |
93 | |
90 | The current coroutine (the last coroutine switched to). The initial value is C<$main> (of course). |
94 | The current coroutine (the last coroutine switched to). The initial value is C<$main> (of course). |
91 | |
95 | |
… | |
… | |
94 | # maybe some other module used Coro::Specific before... |
98 | # maybe some other module used Coro::Specific before... |
95 | if ($current) { |
99 | if ($current) { |
96 | $main->{specific} = $current->{specific}; |
100 | $main->{specific} = $current->{specific}; |
97 | } |
101 | } |
98 | |
102 | |
99 | our $current = $main; |
103 | $current = $main; |
100 | |
104 | |
101 | sub current() { $current } |
105 | sub current() { $current } |
102 | |
106 | |
103 | =item $idle |
107 | =item $idle |
104 | |
108 | |
… | |
… | |
106 | implementation prints "FATAL: deadlock detected" and exits. |
110 | implementation prints "FATAL: deadlock detected" and exits. |
107 | |
111 | |
108 | =cut |
112 | =cut |
109 | |
113 | |
110 | # should be done using priorities :( |
114 | # should be done using priorities :( |
111 | our $idle = new Coro sub { |
115 | $idle = new Coro sub { |
112 | print STDERR "FATAL: deadlock detected\n"; |
116 | print STDERR "FATAL: deadlock detected\n"; |
113 | exit(51); |
117 | exit(51); |
114 | }; |
118 | }; |
115 | |
119 | |
116 | # this coroutine is necessary because a coroutine |
120 | # this coroutine is necessary because a coroutine |
… | |
… | |
134 | } |
138 | } |
135 | }; |
139 | }; |
136 | |
140 | |
137 | # static methods. not really. |
141 | # static methods. not really. |
138 | |
142 | |
|
|
143 | =back |
|
|
144 | |
139 | =head2 STATIC METHODS |
145 | =head2 STATIC METHODS |
140 | |
146 | |
141 | Static methods are actually functions that operate on the current process only. |
147 | Static methods are actually functions that operate on the current process only. |
142 | |
148 | |
143 | =over 4 |
149 | =over 4 |
… | |
… | |
263 | |
269 | |
264 | =item $oldprio = $process->prio($newprio) |
270 | =item $oldprio = $process->prio($newprio) |
265 | |
271 | |
266 | Sets (or gets, if the argument is missing) the priority of the |
272 | Sets (or gets, if the argument is missing) the priority of the |
267 | process. Higher priority processes get run before lower priority |
273 | process. Higher priority processes get run before lower priority |
268 | processes. Priorities are smalled signed integer (currently -4 .. +3), |
274 | processes. Priorities are small signed integers (currently -4 .. +3), |
269 | that you can refer to using PRIO_xxx constants (use the import tag :prio |
275 | that you can refer to using PRIO_xxx constants (use the import tag :prio |
270 | to get then): |
276 | to get then): |
271 | |
277 | |
272 | PRIO_MAX > PRIO_HIGH > PRIO_NORMAL > PRIO_LOW > PRIO_IDLE > PRIO_MIN |
278 | PRIO_MAX > PRIO_HIGH > PRIO_NORMAL > PRIO_LOW > PRIO_IDLE > PRIO_MIN |
273 | 3 > 1 > 0 > -1 > -3 > -4 |
279 | 3 > 1 > 0 > -1 > -3 > -4 |
… | |
… | |
321 | |
327 | |
322 | 1; |
328 | 1; |
323 | |
329 | |
324 | =head1 BUGS/LIMITATIONS |
330 | =head1 BUGS/LIMITATIONS |
325 | |
331 | |
326 | - you must make very sure that no coro is still active on global destruction. |
332 | - you must make very sure that no coro is still active on global |
327 | very bad things might happen otherwise (usually segfaults). |
333 | destruction. very bad things might happen otherwise (usually segfaults). |
|
|
334 | |
328 | - this module is not thread-safe. You should only ever use this module from |
335 | - this module is not thread-safe. You should only ever use this module |
329 | the same thread (this requirement might be loosened in the future to |
336 | from the same thread (this requirement might be losened in the future |
330 | allow per-thread schedulers, but Coro::State does not yet allow this). |
337 | to allow per-thread schedulers, but Coro::State does not yet allow |
|
|
338 | this). |
331 | |
339 | |
332 | =head1 SEE ALSO |
340 | =head1 SEE ALSO |
333 | |
341 | |
334 | L<Coro::Channel>, L<Coro::Cont>, L<Coro::Specific>, L<Coro::Semaphore>, |
342 | L<Coro::Channel>, L<Coro::Cont>, L<Coro::Specific>, L<Coro::Semaphore>, |
335 | L<Coro::Signal>, L<Coro::State>, L<Coro::Event>, L<Coro::RWLock>, |
343 | L<Coro::Signal>, L<Coro::State>, L<Coro::Timer>, L<Coro::Event>, |
336 | L<Coro::Handle>, L<Coro::Socket>. |
344 | L<Coro::L<Coro::RWLock>, Handle>, L<Coro::Socket>. |
337 | |
345 | |
338 | =head1 AUTHOR |
346 | =head1 AUTHOR |
339 | |
347 | |
340 | Marc Lehmann <pcg@goof.com> |
348 | Marc Lehmann <pcg@goof.com> |
341 | http://www.goof.com/pcg/marc/ |
349 | http://www.goof.com/pcg/marc/ |