[ViewVC] Diff of: cvs/Coro/Coro.pm

Comparing Coro/Coro.pm (file contents):
Revision 1.42 by root, Tue Nov 6 20:37:20 2001 UTC vs.
Revision 1.120 by root, Fri Apr 13 03:57:15 2007 UTC

…		…
8		8
9	async {	9	async {
10	# some asynchronous thread of execution	10	# some asynchronous thread of execution
11	};	11	};
12		12
13	# alternatively create an async process like this:	13	# alternatively create an async coroutine like this:
14		14
15	sub some_func : Coro {	15	sub some_func : Coro {
16	# some more async code	16	# some more async code
17	}	17	}
18		18
19	cede;	19	cede;
20		20
21	=head1 DESCRIPTION	21	=head1 DESCRIPTION
22		22
23	This module collection manages coroutines. Coroutines are similar to	23	This module collection manages coroutines. Coroutines are similar
24	threads but don't run in parallel.	24	to threads but don't run in parallel at the same time even on SMP
		25	machines. The specific flavor of coroutine use din this module also
		26	guarentees you that it will not switch between coroutines unless
		27	necessary, at easily-identified points in your program, so locking and
		28	parallel access are rarely an issue, making coroutine programming much
		29	safer than threads programming.
25		30
		31	(Perl, however, does not natively support real threads but instead does a
		32	very slow and memory-intensive emulation of processes using threads. This
		33	is a performance win on Windows machines, and a loss everywhere else).
		34
26	In this module, coroutines are defined as "callchain + lexical variables	35	In this module, coroutines are defined as "callchain + lexical variables +
27	+ @_ + $_ + $@ + $^W + C stack), that is, a coroutine has it's own	36	@_ + $_ + $@ + $/ + C stack), that is, a coroutine has its own callchain,
28	callchain, it's own set of lexicals and it's own set of perl's most	37	its own set of lexicals and its own set of perls most important global
29	important global variables.	38	variables.
30		39
31	=cut	40	=cut
32		41
33	package Coro;	42	package Coro;
34		43
		44	use strict;
35	no warnings qw(uninitialized);	45	no warnings "uninitialized";
36		46
37	use Coro::State;	47	use Coro::State;
38		48
39	use base Exporter;	49	use base qw(Coro::State Exporter);
40		50
41	$VERSION = 0.52;	51	our $idle; # idle handler
		52	our $main; # main coroutine
		53	our $current; # current coroutine
42		54
		55	our $VERSION = '3.56';
		56
43	@EXPORT = qw(async cede schedule terminate current);	57	our @EXPORT = qw(async async_pool cede schedule terminate current unblock_sub);
44	%EXPORT_TAGS = (	58	our %EXPORT_TAGS = (
45	prio => [qw(PRIO_MAX PRIO_HIGH PRIO_NORMAL PRIO_LOW PRIO_IDLE PRIO_MIN)],	59	prio => [qw(PRIO_MAX PRIO_HIGH PRIO_NORMAL PRIO_LOW PRIO_IDLE PRIO_MIN)],
46	);	60	);
47	@EXPORT_OK = @{$EXPORT_TAGS{prio}};	61	our @EXPORT_OK = (@{$EXPORT_TAGS{prio}}, qw(nready));
48		62
49	{	63	{
50	my @async;	64	my @async;
51	my $init;	65	my $init;
52		66
53	# this way of handling attributes simply is NOT scalable ;()	67	# this way of handling attributes simply is NOT scalable ;()
54	sub import {	68	sub import {
		69	no strict 'refs';
		70
55	Coro->export_to_level(1, @_);	71	Coro->export_to_level (1, @_);
		72
56	my $old = *{(caller)[0]."::MODIFY_CODE_ATTRIBUTES"}{CODE};	73	my $old = *{(caller)[0]."::MODIFY_CODE_ATTRIBUTES"}{CODE};
57	*{(caller)[0]."::MODIFY_CODE_ATTRIBUTES"} = sub {	74	*{(caller)[0]."::MODIFY_CODE_ATTRIBUTES"} = sub {
58	my ($package, $ref) = (shift, shift);	75	my ($package, $ref) = (shift, shift);
59	my @attrs;	76	my @attrs;
60	for (@_) {	77	for (@_) {
…		…
75	};	92	};
76	}	93	}
77		94
78	}	95	}
79		96
		97	=over 4
		98
80	=item $main	99	=item $main
81		100
82	This coroutine represents the main program.	101	This coroutine represents the main program.
83		102
84	=cut	103	=cut
85		104
86	our $main = new Coro;	105	$main = new Coro;
87		106
88	=item $current (or as function: current)	107	=item $current (or as function: current)
89		108
90	The current coroutine (the last coroutine switched to). The initial value is C<$main> (of course).	109	The current coroutine (the last coroutine switched to). The initial value
		110	is C<$main> (of course).
		111
		112	This variable is B<strictly> I<read-only>. It is provided for performance
		113	reasons. If performance is not essentiel you are encouraged to use the
		114	C<Coro::current> function instead.
91		115
92	=cut	116	=cut
93		117
94	# maybe some other module used Coro::Specific before...	118	# maybe some other module used Coro::Specific before...
95	if ($current) {
96	$main->{specific} = $current->{specific};	119	$main->{specific} = $current->{specific}
97	}	120	if $current;
98		121
99	our $current = $main;	122	_set_current $main;
100		123
101	sub current() { $current }	124	sub current() { $current }
102		125
103	=item $idle	126	=item $idle
104		127
105	The coroutine to switch to when no other coroutine is running. The default	128	A callback that is called whenever the scheduler finds no ready coroutines
106	implementation prints "FATAL: deadlock detected" and exits.	129	to run. The default implementation prints "FATAL: deadlock detected" and
		130	exits, because the program has no other way to continue.
107		131
108	=cut	132	This hook is overwritten by modules such as C<Coro::Timer> and
		133	C<Coro::Event> to wait on an external event that hopefully wake up a
		134	coroutine so the scheduler can run it.
109		135
110	# should be done using priorities :(	136	Please note that if your callback recursively invokes perl (e.g. for event
111	our $idle = new Coro sub {	137	handlers), then it must be prepared to be called recursively.
112	print STDERR "FATAL: deadlock detected\n";	138
113	exit(51);	139	=cut
		140
		141	$idle = sub {
		142	require Carp;
		143	Carp::croak ("FATAL: deadlock detected");
114	};	144	};
		145
		146	sub _cancel {
		147	my ($self) = @_;
		148
		149	# free coroutine data and mark as destructed
		150	$self->_destroy
		151	or return;
		152
		153	# call all destruction callbacks
		154	$_->(@{$self->{status}})
		155	for @{(delete $self->{destroy_cb}) \|\| []};
		156	}
115		157
116	# this coroutine is necessary because a coroutine	158	# this coroutine is necessary because a coroutine
117	# cannot destroy itself.	159	# cannot destroy itself.
118	my @destroy;	160	my @destroy;
119	my $manager;	161	my $manager;
		162
120	$manager = new Coro sub {	163	$manager = new Coro sub {
121	while() {	164	while () {
122	# by overwriting the state object with the manager we destroy it	165	(shift @destroy)->_cancel
123	# while still being able to schedule this coroutine (in case it has
124	# been readied multiple times. this is harmless since the manager
125	# can be called as many times as neccessary and will always
126	# remove itself from the runqueue
127	while (@destroy) {	166	while @destroy;
128	my $coro = pop @destroy;	167
129	$coro->{status} \|\|= [];
130	$_->ready for @{delete $coro->{join} \|\| []};
131	$coro->{_coro_state} = $manager->{_coro_state};
132	}
133	&schedule;	168	&schedule;
134	}	169	}
135	};	170	};
136		171
		172	$manager->prio (PRIO_MAX);
		173
137	# static methods. not really.	174	# static methods. not really.
138		175
		176	=back
		177
139	=head2 STATIC METHODS	178	=head2 STATIC METHODS
140		179
141	Static methods are actually functions that operate on the current process only.	180	Static methods are actually functions that operate on the current coroutine only.
142		181
143	=over 4	182	=over 4
144		183
145	=item async { ... } [@args...]	184	=item async { ... } [@args...]
146		185
147	Create a new asynchronous process and return it's process object	186	Create a new asynchronous coroutine and return it's coroutine object
148	(usually unused). When the sub returns the new process is automatically	187	(usually unused). When the sub returns the new coroutine is automatically
149	terminated.	188	terminated.
		189
		190	Calling C<exit> in a coroutine will not work correctly, so do not do that.
		191
		192	When the coroutine dies, the program will exit, just as in the main
		193	program.
150		194
151	# create a new coroutine that just prints its arguments	195	# create a new coroutine that just prints its arguments
152	async {	196	async {
153	print "@_\n";	197	print "@_\n";
154	} 1,2,3,4;	198	} 1,2,3,4;
155		199
156	The coderef you submit MUST NOT be a closure that refers to variables
157	in an outer scope. This does NOT work. Pass arguments into it instead.
158
159	=cut	200	=cut
160		201
161	sub async(&@) {	202	sub async(&@) {
162	my $pid = new Coro @_;	203	my $coro = new Coro @_;
163	$manager->ready; # this ensures that the stack is cloned from the manager
164	$pid->ready;	204	$coro->ready;
165	$pid;	205	$coro
		206	}
		207
		208	=item async_pool { ... } [@args...]
		209
		210	Similar to C<async>, but uses a coroutine pool, so you should not call
		211	terminate or join (although you are allowed to), and you get a coroutine
		212	that might have executed other code already (which can be good or bad :).
		213
		214	Also, the block is executed in an C<eval> context and a warning will be
		215	issued in case of an exception instead of terminating the program, as
		216	C<async> does. As the coroutine is being reused, stuff like C<on_destroy>
		217	will not work in the expected way, unless you call terminate or cancel,
		218	which somehow defeats the purpose of pooling.
		219
		220	The priority will be reset to C<0> after each job, otherwise the coroutine
		221	will be re-used "as-is".
		222
		223	The pool size is limited to 8 idle coroutines (this can be adjusted by
		224	changing $Coro::POOL_SIZE), and there can be as many non-idle coros as
		225	required.
		226
		227	If you are concerned about pooled coroutines growing a lot because a
		228	single C<async_pool> used a lot of stackspace you can e.g. C<async_pool {
		229	terminate }> once per second or so to slowly replenish the pool.
		230
		231	=cut
		232
		233	our $POOL_SIZE = 8;
		234	our @pool;
		235
		236	sub pool_handler {
		237	while () {
		238	eval {
		239	my ($cb, @arg) = @{ delete $current->{_invoke} or return };
		240	$cb->(@arg);
		241	};
		242	warn $@ if $@;
		243
		244	last if @pool >= $POOL_SIZE;
		245	push @pool, $current;
		246
		247	$current->save (Coro::State::SAVE_DEF);
		248	$current->prio (0);
		249	schedule;
		250	}
		251	}
		252
		253	sub async_pool(&@) {
		254	# this is also inlined into the unlock_scheduler
		255	my $coro = (pop @pool or new Coro \&pool_handler);
		256
		257	$coro->{_invoke} = [@_];
		258	$coro->ready;
		259
		260	$coro
166	}	261	}
167		262
168	=item schedule	263	=item schedule
169		264
170	Calls the scheduler. Please note that the current process will not be put	265	Calls the scheduler. Please note that the current coroutine will not be put
171	into the ready queue, so calling this function usually means you will	266	into the ready queue, so calling this function usually means you will
172	never be called again.	267	never be called again unless something else (e.g. an event handler) calls
		268	ready.
173		269
174	=cut	270	The canonical way to wait on external events is this:
		271
		272	{
		273	# remember current coroutine
		274	my $current = $Coro::current;
		275
		276	# register a hypothetical event handler
		277	on_event_invoke sub {
		278	# wake up sleeping coroutine
		279	$current->ready;
		280	undef $current;
		281	};
		282
		283	# call schedule until event occured.
		284	# in case we are woken up for other reasons
		285	# (current still defined), loop.
		286	Coro::schedule while $current;
		287	}
175		288
176	=item cede	289	=item cede
177		290
178	"Cede" to other processes. This function puts the current process into the	291	"Cede" to other coroutines. This function puts the current coroutine into the
179	ready queue and calls C<schedule>, which has the effect of giving up the	292	ready queue and calls C<schedule>, which has the effect of giving up the
180	current "timeslice" to other coroutines of the same or higher priority.	293	current "timeslice" to other coroutines of the same or higher priority.
181		294
182	=cut	295	Returns true if at least one coroutine switch has happened.
		296
		297	=item Coro::cede_notself
		298
		299	Works like cede, but is not exported by default and will cede to any
		300	coroutine, regardless of priority, once.
		301
		302	Returns true if at least one coroutine switch has happened.
183		303
184	=item terminate [arg...]	304	=item terminate [arg...]
185		305
186	Terminates the current process.	306	Terminates the current coroutine with the given status values (see L<cancel>).
187
188	Future versions of this function will allow result arguments.
189		307
190	=cut	308	=cut
191		309
192	sub terminate {	310	sub terminate {
193	$current->{status} = [@_];
194	$current->cancel;	311	$current->cancel (@_);
195	&schedule;
196	die; # NORETURN
197	}	312	}
198		313
199	=back	314	=back
200		315
201	# dynamic methods	316	# dynamic methods
202		317
203	=head2 PROCESS METHODS	318	=head2 COROUTINE METHODS
204		319
205	These are the methods you can call on process objects.	320	These are the methods you can call on coroutine objects.
206		321
207	=over 4	322	=over 4
208		323
209	=item new Coro \&sub [, @args...]	324	=item new Coro \&sub [, @args...]
210		325
211	Create a new process and return it. When the sub returns the process	326	Create a new coroutine and return it. When the sub returns the coroutine
212	automatically terminates as if C<terminate> with the returned values were	327	automatically terminates as if C<terminate> with the returned values were
213	called. To make the process run you must first put it into the ready queue	328	called. To make the coroutine run you must first put it into the ready queue
214	by calling the ready method.	329	by calling the ready method.
215		330
216	=cut	331	Calling C<exit> in a coroutine will not work correctly, so do not do that.
217		332
		333	=cut
		334
218	sub _newcoro {	335	sub _run_coro {
219	terminate &{+shift};	336	terminate &{+shift};
220	}	337	}
221		338
222	sub new {	339	sub new {
223	my $class = shift;	340	my $class = shift;
224	bless {
225	_coro_state => (new Coro::State $_[0] && \&_newcoro, @_),
226	}, $class;
227	}
228		341
229	=item $process->ready	342	$class->SUPER::new (\&_run_coro, @_)
		343	}
230		344
231	Put the given process into the ready queue.	345	=item $success = $coroutine->ready
232		346
233	=cut	347	Put the given coroutine into the ready queue (according to it's priority)
		348	and return true. If the coroutine is already in the ready queue, do nothing
		349	and return false.
234		350
235	=item $process->cancel	351	=item $is_ready = $coroutine->is_ready
236		352
237	Like C<terminate>, but terminates the specified process instead.	353	Return wether the coroutine is currently the ready queue or not,
		354
		355	=item $coroutine->cancel (arg...)
		356
		357	Terminates the given coroutine and makes it return the given arguments as
		358	status (default: the empty list). Never returns if the coroutine is the
		359	current coroutine.
238		360
239	=cut	361	=cut
240		362
241	sub cancel {	363	sub cancel {
		364	my $self = shift;
		365	$self->{status} = [@_];
		366
		367	if ($current == $self) {
242	push @destroy, $_[0];	368	push @destroy, $self;
243	$manager->ready;	369	$manager->ready;
244	&schedule if $current == $_[0];	370	&schedule while 1;
		371	} else {
		372	$self->_cancel;
		373	}
245	}	374	}
246		375
247	=item $process->join	376	=item $coroutine->join
248		377
249	Wait until the coroutine terminates and return any values given to the	378	Wait until the coroutine terminates and return any values given to the
250	C<terminate> function. C<join> can be called multiple times from multiple	379	C<terminate> or C<cancel> functions. C<join> can be called multiple times
251	processes.	380	from multiple coroutine.
252		381
253	=cut	382	=cut
254		383
255	sub join {	384	sub join {
256	my $self = shift;	385	my $self = shift;
		386
257	unless ($self->{status}) {	387	unless ($self->{status}) {
258	push @{$self->{join}}, $current;	388	my $current = $current;
259	&schedule;	389
		390	push @{$self->{destroy_cb}}, sub {
		391	$current->ready;
		392	undef $current;
		393	};
		394
		395	&schedule while $current;
260	}	396	}
		397
261	wantarray ? @{$self->{status}} : $self->{status}[0];	398	wantarray ? @{$self->{status}} : $self->{status}[0];
262	}	399	}
263		400
		401	=item $coroutine->on_destroy (\&cb)
		402
		403	Registers a callback that is called when this coroutine gets destroyed,
		404	but before it is joined. The callback gets passed the terminate arguments,
		405	if any.
		406
		407	=cut
		408
		409	sub on_destroy {
		410	my ($self, $cb) = @_;
		411
		412	push @{ $self->{destroy_cb} }, $cb;
		413	}
		414
264	=item $oldprio = $process->prio($newprio)	415	=item $oldprio = $coroutine->prio ($newprio)
265		416
266	Sets (or gets, if the argument is missing) the priority of the	417	Sets (or gets, if the argument is missing) the priority of the
267	process. Higher priority processes get run before lower priority	418	coroutine. Higher priority coroutines get run before lower priority
268	processes. Priorities are smalled signed integer (currently -4 .. +3),	419	coroutines. Priorities are small signed integers (currently -4 .. +3),
269	that you can refer to using PRIO_xxx constants (use the import tag :prio	420	that you can refer to using PRIO_xxx constants (use the import tag :prio
270	to get then):	421	to get then):
271		422
272	PRIO_MAX > PRIO_HIGH > PRIO_NORMAL > PRIO_LOW > PRIO_IDLE > PRIO_MIN	423	PRIO_MAX > PRIO_HIGH > PRIO_NORMAL > PRIO_LOW > PRIO_IDLE > PRIO_MIN
273	3 > 1 > 0 > -1 > -3 > -4	424	3 > 1 > 0 > -1 > -3 > -4
…		…
276	current->prio(PRIO_HIGH);	427	current->prio(PRIO_HIGH);
277		428
278	The idle coroutine ($Coro::idle) always has a lower priority than any	429	The idle coroutine ($Coro::idle) always has a lower priority than any
279	existing coroutine.	430	existing coroutine.
280		431
281	Changing the priority of the current process will take effect immediately,	432	Changing the priority of the current coroutine will take effect immediately,
282	but changing the priority of processes in the ready queue (but not	433	but changing the priority of coroutines in the ready queue (but not
283	running) will only take effect after the next schedule (of that	434	running) will only take effect after the next schedule (of that
284	process). This is a bug that will be fixed in some future version.	435	coroutine). This is a bug that will be fixed in some future version.
285		436
286	=cut
287
288	sub prio {
289	my $old = $_[0]{prio};
290	$_[0]{prio} = $_[1] if @_ > 1;
291	$old;
292	}
293
294	=item $newprio = $process->nice($change)	437	=item $newprio = $coroutine->nice ($change)
295		438
296	Similar to C<prio>, but subtract the given value from the priority (i.e.	439	Similar to C<prio>, but subtract the given value from the priority (i.e.
297	higher values mean lower priority, just as in unix).	440	higher values mean lower priority, just as in unix).
298		441
299	=cut
300
301	sub nice {
302	$_[0]{prio} -= $_[1];
303	}
304
305	=item $olddesc = $process->desc($newdesc)	442	=item $olddesc = $coroutine->desc ($newdesc)
306		443
307	Sets (or gets in case the argument is missing) the description for this	444	Sets (or gets in case the argument is missing) the description for this
308	process. This is just a free-form string you can associate with a process.	445	coroutine. This is just a free-form string you can associate with a coroutine.
309		446
310	=cut	447	=cut
311		448
312	sub desc {	449	sub desc {
313	my $old = $_[0]{desc};	450	my $old = $_[0]{desc};
…		…
315	$old;	452	$old;
316	}	453	}
317		454
318	=back	455	=back
319		456
		457	=head2 GLOBAL FUNCTIONS
		458
		459	=over 4
		460
		461	=item Coro::nready
		462
		463	Returns the number of coroutines that are currently in the ready state,
		464	i.e. that can be swicthed to. The value C<0> means that the only runnable
		465	coroutine is the currently running one, so C<cede> would have no effect,
		466	and C<schedule> would cause a deadlock unless there is an idle handler
		467	that wakes up some coroutines.
		468
		469	=item my $guard = Coro::guard { ... }
		470
		471	This creates and returns a guard object. Nothing happens until the object
		472	gets destroyed, in which case the codeblock given as argument will be
		473	executed. This is useful to free locks or other resources in case of a
		474	runtime error or when the coroutine gets canceled, as in both cases the
		475	guard block will be executed. The guard object supports only one method,
		476	C<< ->cancel >>, which will keep the codeblock from being executed.
		477
		478	Example: set some flag and clear it again when the coroutine gets canceled
		479	or the function returns:
		480
		481	sub do_something {
		482	my $guard = Coro::guard { $busy = 0 };
		483	$busy = 1;
		484
		485	# do something that requires $busy to be true
		486	}
		487
		488	=cut
		489
		490	sub guard(&) {
		491	bless \(my $cb = $_[0]), "Coro::guard"
		492	}
		493
		494	sub Coro::guard::cancel {
		495	${$_[0]} = sub { };
		496	}
		497
		498	sub Coro::guard::DESTROY {
		499	${$_[0]}->();
		500	}
		501
		502
		503	=item unblock_sub { ... }
		504
		505	This utility function takes a BLOCK or code reference and "unblocks" it,
		506	returning the new coderef. This means that the new coderef will return
		507	immediately without blocking, returning nothing, while the original code
		508	ref will be called (with parameters) from within its own coroutine.
		509
		510	The reason this fucntion exists is that many event libraries (such as the
		511	venerable L<Event\|Event> module) are not coroutine-safe (a weaker form
		512	of thread-safety). This means you must not block within event callbacks,
		513	otherwise you might suffer from crashes or worse.
		514
		515	This function allows your callbacks to block by executing them in another
		516	coroutine where it is safe to block. One example where blocking is handy
		517	is when you use the L<Coro::AIO\|Coro::AIO> functions to save results to
		518	disk.
		519
		520	In short: simply use C<unblock_sub { ... }> instead of C<sub { ... }> when
		521	creating event callbacks that want to block.
		522
		523	=cut
		524
		525	our @unblock_queue;
		526
		527	# we create a special coro because we want to cede,
		528	# to reduce pressure on the coro pool (because most callbacks
		529	# return immediately and can be reused) and because we cannot cede
		530	# inside an event callback.
		531	our $unblock_scheduler = async {
		532	while () {
		533	while (my $cb = pop @unblock_queue) {
		534	# this is an inlined copy of async_pool
		535	my $coro = (pop @pool or new Coro \&pool_handler);
		536
		537	$coro->{_invoke} = $cb;
		538	$coro->ready;
		539	cede; # for short-lived callbacks, this reduces pressure on the coro pool
		540	}
		541	schedule; # sleep well
		542	}
		543	};
		544
		545	sub unblock_sub(&) {
		546	my $cb = shift;
		547
		548	sub {
		549	unshift @unblock_queue, [$cb, @_];
		550	$unblock_scheduler->ready;
		551	}
		552	}
		553
		554	=back
		555
320	=cut	556	=cut
321		557
322	1;	558	1;
323		559
324	=head1 BUGS/LIMITATIONS	560	=head1 BUGS/LIMITATIONS
325		561
326	- you must make very sure that no coro is still active on global destruction.	562	- you must make very sure that no coro is still active on global
327	very bad things might happen otherwise (usually segfaults).	563	destruction. very bad things might happen otherwise (usually segfaults).
		564
328	- this module is not thread-safe. You should only ever use this module from	565	- 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	566	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).	567	to allow per-thread schedulers, but Coro::State does not yet allow
		568	this).
331		569
332	=head1 SEE ALSO	570	=head1 SEE ALSO
333		571
334	L<Coro::Channel>, L<Coro::Cont>, L<Coro::Specific>, L<Coro::Semaphore>,	572	Support/Utility: L<Coro::Cont>, L<Coro::Specific>, L<Coro::State>, L<Coro::Util>.
335	L<Coro::Signal>, L<Coro::State>, L<Coro::Event>, L<Coro::RWLock>,	573
336	L<Coro::Handle>, L<Coro::Socket>.	574	Locking/IPC: L<Coro::Signal>, L<Coro::Channel>, L<Coro::Semaphore>, L<Coro::SemaphoreSet>, L<Coro::RWLock>.
		575
		576	Event/IO: L<Coro::Timer>, L<Coro::Event>, L<Coro::Handle>, L<Coro::Socket>, L<Coro::Select>.
		577
		578	Embedding: L<Coro:MakeMaker>
337		579
338	=head1 AUTHOR	580	=head1 AUTHOR
339		581
340	Marc Lehmann <pcg@goof.com>	582	Marc Lehmann <schmorp@schmorp.de>
341	http://www.goof.com/pcg/marc/	583	http://home.schmorp.de/
342		584
343	=cut	585	=cut
344		586

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Comparing Coro/Coro.pm (file contents): Revision 1.42 by root, Tue Nov 6 20:37:20 2001 UTC vs. Revision 1.120 by root, Fri Apr 13 03:57:15 2007 UTC

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Comparing Coro/Coro.pm (file contents):
Revision 1.42 by root, Tue Nov 6 20:37:20 2001 UTC vs.
Revision 1.120 by root, Fri Apr 13 03:57:15 2007 UTC