… | |
… | |
124 | # by overwriting the state object with the manager we destroy it |
124 | # by overwriting the state object with the manager we destroy it |
125 | # while still being able to schedule this coroutine (in case it has |
125 | # while still being able to schedule this coroutine (in case it has |
126 | # been readied multiple times. this is harmless since the manager |
126 | # been readied multiple times. this is harmless since the manager |
127 | # can be called as many times as neccessary and will always |
127 | # can be called as many times as neccessary and will always |
128 | # remove itself from the runqueue |
128 | # remove itself from the runqueue |
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129 | while (@destroy) { |
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130 | my $coro = pop @destroy; |
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131 | $coro->{status} ||= []; |
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132 | $_->ready for @{delete $coro->{join} || []}; |
129 | (pop @destroy)->{_coro_state} = $manager->{_coro_state} while @destroy; |
133 | $coro->{_coro_state} = $manager->{_coro_state}; |
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134 | } |
130 | &schedule; |
135 | &schedule; |
131 | } |
136 | } |
132 | }; |
137 | }; |
133 | |
138 | |
134 | # static methods. not really. |
139 | # static methods. not really. |
… | |
… | |
176 | ready queue and calls C<schedule>, which has the effect of giving up the |
181 | ready queue and calls C<schedule>, which has the effect of giving up the |
177 | current "timeslice" to other coroutines of the same or higher priority. |
182 | current "timeslice" to other coroutines of the same or higher priority. |
178 | |
183 | |
179 | =cut |
184 | =cut |
180 | |
185 | |
181 | =item terminate |
186 | =item terminate [arg...] |
182 | |
187 | |
183 | Terminates the current process. |
188 | Terminates the current process. |
184 | |
189 | |
185 | Future versions of this function will allow result arguments. |
190 | Future versions of this function will allow result arguments. |
186 | |
191 | |
187 | =cut |
192 | =cut |
188 | |
193 | |
189 | sub terminate { |
194 | sub terminate { |
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195 | $current->{status} = [@_]; |
190 | $current->cancel; |
196 | $current->cancel; |
191 | &schedule; |
197 | &schedule; |
192 | die; # NORETURN |
198 | die; # NORETURN |
193 | } |
199 | } |
194 | |
200 | |
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203 | =over 4 |
209 | =over 4 |
204 | |
210 | |
205 | =item new Coro \&sub [, @args...] |
211 | =item new Coro \&sub [, @args...] |
206 | |
212 | |
207 | Create a new process and return it. When the sub returns the process |
213 | Create a new process and return it. When the sub returns the process |
208 | automatically terminates. To start the process you must first put it into |
214 | automatically terminates as if C<terminate> with the returned values were |
209 | the ready queue by calling the ready method. |
215 | called. To start the process you must first put it into the ready queue by |
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216 | calling the ready method. |
210 | |
217 | |
211 | The coderef you submit MUST NOT be a closure that refers to variables |
218 | The coderef you submit MUST NOT be a closure that refers to variables |
212 | in an outer scope. This does NOT work. Pass arguments into it instead. |
219 | in an outer scope. This does NOT work. Pass arguments into it instead. |
213 | |
220 | |
214 | =cut |
221 | =cut |
… | |
… | |
224 | }, $class; |
231 | }, $class; |
225 | } |
232 | } |
226 | |
233 | |
227 | =item $process->ready |
234 | =item $process->ready |
228 | |
235 | |
229 | Put the current process into the ready queue. |
236 | Put the given process into the ready queue. |
230 | |
237 | |
231 | =cut |
238 | =cut |
232 | |
239 | |
233 | =item $process->cancel |
240 | =item $process->cancel |
234 | |
241 | |
… | |
… | |
238 | |
245 | |
239 | sub cancel { |
246 | sub cancel { |
240 | push @destroy, $_[0]; |
247 | push @destroy, $_[0]; |
241 | $manager->ready; |
248 | $manager->ready; |
242 | &schedule if $current == $_[0]; |
249 | &schedule if $current == $_[0]; |
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250 | } |
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251 | |
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252 | =item $process->join |
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253 | |
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254 | Wait until the coroutine terminates and return any values given to the |
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255 | C<terminate> function. C<join> can be called multiple times from multiple |
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256 | processes. |
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257 | |
|
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258 | =cut |
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259 | |
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260 | sub join { |
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261 | my $self = shift; |
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262 | unless ($self->{status}) { |
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263 | push @{$self->{join}}, $current; |
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264 | &schedule; |
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265 | } |
|
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266 | wantarray ? @{$self->{status}} : $self->{status}[0]; |
243 | } |
267 | } |
244 | |
268 | |
245 | =item $oldprio = $process->prio($newprio) |
269 | =item $oldprio = $process->prio($newprio) |
246 | |
270 | |
247 | Sets the priority of the process. Higher priority processes get run before |
271 | Sets the priority of the process. Higher priority processes get run before |