1 | =head1 NAME |
1 | =head1 NAME |
2 | |
2 | |
3 | EV - perl interface to libevent, monkey.org/~provos/libevent/ |
3 | EV - perl interface to libev, a high performance full-featured event loop |
4 | |
4 | |
5 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
6 | |
6 | |
7 | use EV; |
7 | use EV; |
8 | |
8 | |
9 | # TIMER |
9 | # TIMERS |
10 | |
10 | |
11 | my $w = EV::timer 2, 0, sub { |
11 | my $w = EV::timer 2, 0, sub { |
12 | warn "is called after 2s"; |
12 | warn "is called after 2s"; |
13 | }; |
13 | }; |
14 | |
14 | |
15 | my $w = EV::timer 2, 1, sub { |
15 | my $w = EV::timer 2, 1, sub { |
16 | warn "is called roughly every 2s (repeat = 1)"; |
16 | warn "is called roughly every 2s (repeat = 1)"; |
17 | }; |
17 | }; |
18 | |
18 | |
19 | undef $w; # destroy event watcher again |
19 | undef $w; # destroy event watcher again |
20 | |
20 | |
21 | # IO |
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22 | |
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23 | my $w = EV::timer_abs 0, 60, sub { |
21 | my $w = EV::periodic 0, 60, sub { |
24 | warn "is called every minute, on the minute, exactly"; |
22 | warn "is called every minute, on the minute, exactly"; |
25 | }; |
23 | }; |
26 | |
24 | |
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25 | # IO |
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26 | |
27 | my $w = EV::io \*STDIN, EV::READ | EV::PERSIST, sub { |
27 | my $w = EV::io *STDIN, EV::READ, sub { |
28 | my ($w, $events) = @_; # all callbacks get the watcher object and event mask |
28 | my ($w, $revents) = @_; # all callbacks get the watcher object and event mask |
29 | if ($events & EV::TIMEOUT) { |
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30 | warn "nothign received on stdin for 10 seconds, retrying"; |
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31 | } else { |
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32 | warn "stdin is readable, you entered: ", <STDIN>; |
29 | warn "stdin is readable, you entered: ", <STDIN>; |
33 | } |
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34 | }; |
30 | }; |
35 | $w->timeout (10); |
31 | |
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32 | # SIGNALS |
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33 | |
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34 | my $w = EV::signal 'QUIT', sub { |
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35 | warn "sigquit received\n"; |
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36 | }; |
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37 | |
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38 | my $w = EV::signal 3, sub { |
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39 | warn "sigquit received (this is GNU/Linux, right?)\n"; |
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40 | }; |
36 | |
41 | |
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42 | # CHILD/PID STATUS CHANGES |
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43 | |
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44 | my $w = EV::child 666, sub { |
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45 | my ($w, $revents, $status) = @_; |
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46 | }; |
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47 | |
37 | # MAINLOOP |
48 | # MAINLOOP |
38 | EV::dispatch; # loop as long as watchers are active |
49 | EV::loop; # loop until EV::loop_done is called |
39 | EV::loop; # the same thing |
50 | EV::loop EV::LOOP_ONESHOT; # block until at least one event could be handled |
40 | EV::loop EV::LOOP_ONCE; |
51 | EV::loop EV::LOOP_NONBLOCK; # try to handle same events, but do not block |
41 | EV::loop EV::LOOP_ONSHOT; |
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42 | |
52 | |
43 | =head1 DESCRIPTION |
53 | =head1 DESCRIPTION |
44 | |
54 | |
45 | This module provides an interface to libevent |
55 | This module provides an interface to libev |
46 | (L<http://monkey.org/~provos/libevent/>). |
56 | (L<http://software.schmorp.de/pkg/libev.html>). |
47 | |
57 | |
48 | =cut |
58 | =cut |
49 | |
59 | |
50 | package EV; |
60 | package EV; |
51 | |
61 | |
52 | use strict; |
62 | use strict; |
53 | |
63 | |
54 | BEGIN { |
64 | BEGIN { |
55 | our $VERSION = '0.01'; |
65 | our $VERSION = '0.1'; |
56 | use XSLoader; |
66 | use XSLoader; |
57 | XSLoader::load "EV", $VERSION; |
67 | XSLoader::load "EV", $VERSION; |
58 | } |
68 | } |
59 | |
69 | |
60 | =head1 FUNCTIONAL INTERFACE |
70 | @EV::Io::ISA = |
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71 | @EV::Timer::ISA = |
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72 | @EV::Periodic::ISA = |
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73 | @EV::Signal::ISA = |
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74 | @EV::Idle::ISA = |
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75 | @EV::Prepare::ISA = |
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76 | @EV::Check::ISA = |
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77 | @EV::Child::ISA = "EV::Watcher"; |
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78 | |
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79 | =head1 BASIC INTERFACE |
61 | |
80 | |
62 | =over 4 |
81 | =over 4 |
63 | |
82 | |
64 | =item $EV::NPRI |
83 | =item $EV::DIED |
65 | |
84 | |
66 | How many priority levels are available. |
85 | Must contain a reference to a function that is called when a callback |
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86 | throws an exception (with $@ containing thr error). The default prints an |
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87 | informative message and continues. |
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88 | |
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89 | If this callback throws an exception it will be silently ignored. |
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90 | |
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91 | =item $time = EV::time |
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92 | |
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93 | Returns the current time in (fractional) seconds since the epoch. |
67 | |
94 | |
68 | =item $time = EV::now |
95 | =item $time = EV::now |
69 | |
96 | |
70 | Returns the time in (fractional) seconds since the epoch. |
97 | Returns the time the last event loop iteration has been started. This |
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98 | is the time that (relative) timers are based on, and refering to it is |
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99 | usually faster then calling EV::time. |
71 | |
100 | |
72 | =item $version = EV::version |
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73 | |
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74 | =item $method = EV::method |
101 | =item $method = EV::ev_method |
75 | |
102 | |
76 | Return version string and event polling method used. |
103 | Returns an integer describing the backend used by libev (EV::METHOD_SELECT |
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104 | or EV::METHOD_EPOLL). |
77 | |
105 | |
78 | =item EV::loop $flags # EV::LOOP_ONCE, EV::LOOP_ONESHOT |
106 | =item EV::loop [$flags] |
79 | |
107 | |
80 | =item EV::loopexit $after |
108 | Begin checking for events and calling callbacks. It returns when a |
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109 | callback calls EV::loop_done. |
81 | |
110 | |
82 | Exit any active loop or dispatch after C<$after> seconds or immediately if |
111 | The $flags argument can be one of the following: |
83 | C<$after> is missing or zero. |
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84 | |
112 | |
85 | =item EV::dispatch |
113 | 0 as above |
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114 | EV::LOOP_ONESHOT block at most once (wait, but do not loop) |
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115 | EV::LOOP_NONBLOCK do not block at all (fetch/handle events but do not wait) |
86 | |
116 | |
87 | Same as C<EV::loop 0>. |
117 | =item EV::loop_done [$how] |
88 | |
118 | |
89 | =item EV::event $callback |
119 | When called with no arguments or an argument of 1, makes the innermost |
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120 | call to EV::loop return. |
90 | |
121 | |
91 | Creates a new event watcher waiting for nothing, calling the given callback. |
122 | When called with an agrument of 2, all calls to EV::loop will return as |
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123 | fast as possible. |
92 | |
124 | |
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125 | =back |
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126 | |
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127 | =head2 WATCHER |
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128 | |
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129 | A watcher is an object that gets created to record your interest in some |
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130 | event. For instance, if you want to wait for STDIN to become readable, you |
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131 | would create an EV::io watcher for that: |
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132 | |
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133 | my $watcher = EV::io *STDIN, EV::READ, sub { |
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134 | my ($watcher, $revents) = @_; |
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135 | warn "yeah, STDIN should not be readable without blocking!\n" |
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136 | }; |
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137 | |
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138 | All watchers can be active (waiting for events) or inactive (paused). Only |
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139 | active watchers will have their callbacks invoked. All callbacks will be |
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140 | called with at least two arguments: the watcher and a bitmask of received |
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141 | events. |
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142 | |
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143 | Each watcher type has its associated bit in revents, so you can use the |
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144 | same callback for multiple watchers. The event mask is named after the |
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145 | type, i..e. EV::child sets EV::CHILD, EV::prepare sets EV::PREPARE, |
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146 | EV::periodic sets EV::PERIODIC and so on, with the exception of IO events |
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147 | (which can set both EV::READ and EV::WRITE bits), and EV::timer (which |
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148 | uses EV::TIMEOUT). |
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149 | |
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150 | In the rare case where one wants to create a watcher but not start it at |
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151 | the same time, each constructor has a variant with a trailing C<_ns> in |
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152 | its name, e.g. EV::io has a non-starting variant EV::io_ns and so on. |
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153 | |
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154 | Please note that a watcher will automatically be stopped when the watcher |
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155 | object is destroyed, so you I<need> to keep the watcher objects returned by |
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156 | the constructors. |
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157 | |
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158 | Also, all methods changing some aspect of a watcher (->set, ->priority, |
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159 | ->fh and so on) automatically stop and start it again if it is active, |
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160 | which means pending events get lost. |
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161 | |
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162 | =head2 WATCHER TYPES |
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163 | |
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164 | Now lets move to the existing watcher types and asociated methods. |
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165 | |
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166 | The following methods are available for all watchers. Then followes a |
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167 | description of each watcher constructor (EV::io, EV::timer, EV::periodic, |
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168 | EV::signal, EV::child, EV::idle, EV::prepare and EV::check), followed by |
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169 | any type-specific methods (if any). |
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170 | |
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171 | =over 4 |
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172 | |
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173 | =item $w->start |
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174 | |
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175 | Starts a watcher if it isn't active already. Does nothing to an already |
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176 | active watcher. By default, all watchers start out in the active state |
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177 | (see the description of the C<_ns> variants if you need stopped watchers). |
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178 | |
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179 | =item $w->stop |
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180 | |
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181 | Stop a watcher if it is active. Also clear any pending events (events that |
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182 | have been received but that didn't yet result in a callback invocation), |
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183 | regardless of wether the watcher was active or not. |
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184 | |
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185 | =item $bool = $w->is_active |
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186 | |
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187 | Returns true if the watcher is active, false otherwise. |
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188 | |
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189 | =item $current_cb = $w->cb |
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190 | |
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191 | =item $old_cb = $w->cb ($new_cb) |
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192 | |
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193 | Queries the callback on the watcher and optionally changes it. You can do |
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194 | this at any time without the watcher restarting. |
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195 | |
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196 | =item $current_priority = $w->priority |
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197 | |
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198 | =item $old_priority = $w->priority ($new_priority) |
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199 | |
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200 | Queries the priority on the watcher and optionally changes it. Pending |
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201 | watchers with higher priority will be invoked first. The valid range of |
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202 | priorities lies between EV::MAXPRI (default 2) and EV::MINPRI (default |
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203 | -2). If the priority is outside this range it will automatically be |
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204 | normalised to the nearest valid priority. |
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205 | |
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206 | The default priority of any newly-created weatcher is 0. |
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207 | |
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208 | =item $w->trigger ($revents) |
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209 | |
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210 | Call the callback *now* with the given event mask. |
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211 | |
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212 | |
93 | =item my $w = EV::io $fileno_or_fh, $eventmask, $callback |
213 | =item $w = EV::io $fileno_or_fh, $eventmask, $callback |
94 | |
214 | |
95 | =item my $w = EV::io_ns $fileno_or_fh, $eventmask, $callback |
215 | =item $w = EV::io_ns $fileno_or_fh, $eventmask, $callback |
96 | |
216 | |
97 | As long as the returned watcher object is alive, call the C<$callback> |
217 | As long as the returned watcher object is alive, call the C<$callback> |
98 | when the events specified in C<$eventmask> happen. Initially, the timeout |
218 | when the events specified in C<$eventmask>. |
99 | is disabled. |
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100 | |
219 | |
101 | The C<io_ns> variant doesn't add/start the newly created watcher. |
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102 | |
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103 | Eventmask can be one or more of these constants ORed together: |
220 | The $eventmask can be one or more of these constants ORed together: |
104 | |
221 | |
105 | EV::READ wait until read() wouldn't block anymore |
222 | EV::READ wait until read() wouldn't block anymore |
106 | EV::WRITE wait until write() wouldn't block anymore |
223 | EV::WRITE wait until write() wouldn't block anymore |
107 | EV::PERSIST stay active after an event occured |
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108 | |
224 | |
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225 | The C<io_ns> variant doesn't start (activate) the newly created watcher. |
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226 | |
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227 | =item $w->set ($fileno_or_fh, $eventmask) |
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228 | |
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229 | Reconfigures the watcher, see the constructor above for details. Can be |
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230 | called at any time. |
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231 | |
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232 | =item $current_fh = $w->fh |
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233 | |
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234 | =item $old_fh = $w->fh ($new_fh) |
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235 | |
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236 | Returns the previously set filehandle and optionally set a new one. |
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237 | |
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238 | =item $current_eventmask = $w->events |
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239 | |
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240 | =item $old_eventmask = $w->events ($new_eventmask) |
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241 | |
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242 | Returns the previously set event mask and optionally set a new one. |
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243 | |
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244 | |
109 | =item my $w = EV::timer $after, $repeat, $callback |
245 | =item $w = EV::timer $after, $repeat, $callback |
110 | |
246 | |
111 | =item my $w = EV::timer_ns $after, $repeat, $callback |
247 | =item $w = EV::timer_ns $after, $repeat, $callback |
112 | |
248 | |
113 | Calls the callback after C<$after> seconds. If C<$repeat> is true, the |
249 | Calls the callback after C<$after> seconds. If C<$repeat> is non-zero, |
114 | timer will be restarted after the callback returns. This means that the |
250 | the timer will be restarted (with the $repeat value as $after) after the |
115 | callback would be called roughly every C<$after> seconds, prolonged by the |
251 | callback returns. |
116 | time the callback takes. |
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117 | |
252 | |
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253 | This means that the callback would be called roughly after C<$after> |
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254 | seconds, and then every C<$repeat> seconds. "Roughly" because the time of |
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255 | callback processing is not taken into account, so the timer will slowly |
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256 | drift. If that isn't acceptable, look at EV::periodic. |
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257 | |
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258 | The timer is based on a monotonic clock, that is if somebody is sitting |
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259 | in front of the machine while the timer is running and changes the system |
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260 | clock, the timer will nevertheless run (roughly) the same time. |
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261 | |
118 | The C<timer_ns> variant doesn't add/start the newly created watcher. |
262 | The C<timer_ns> variant doesn't start (activate) the newly created watcher. |
119 | |
263 | |
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264 | =item $w->set ($after, $repeat) |
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265 | |
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266 | Reconfigures the watcher, see the constructor above for details. Can be at |
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267 | any time. |
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268 | |
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269 | =item $w->again |
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270 | |
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271 | Similar to the C<start> method, but has special semantics for repeating timers: |
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272 | |
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273 | If the timer is active and repeating, reset the timeout to occur |
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274 | C<$repeat> seconds after now. |
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275 | |
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276 | If the timer is active and non-repeating, it will be stopped. |
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277 | |
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278 | If the timer is in active and repeating, start it. |
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279 | |
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280 | Otherwise do nothing. |
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281 | |
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282 | This behaviour is useful when you have a timeout for some IO |
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283 | operation. You create a timer object with the same value for C<$after> and |
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284 | C<$repeat>, and then, in the read/write watcher, run the C<again> method |
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285 | on the timeout. |
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286 | |
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287 | |
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288 | =item $w = EV::periodic $at, $interval, $callback |
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289 | |
120 | =item my $w = EV::timer_abs $at, $interval, $callback |
290 | =item $w = EV::periodic_ns $at, $interval, $callback |
121 | |
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122 | =item my $w = EV::timer_abs_ns $at, $interval, $callback |
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123 | |
291 | |
124 | Similar to EV::timer, but the time is given as an absolute point in time |
292 | Similar to EV::timer, but the time is given as an absolute point in time |
125 | (C<$at>), plus an optional C<$interval>. |
293 | (C<$at>), plus an optional C<$interval>. |
126 | |
294 | |
127 | If the C<$interval> is zero, then the callback will be called at the time |
295 | If the C<$interval> is zero, then the callback will be called at the time |
128 | C<$at> if that is in the future, or as soon as possible if its in the |
296 | C<$at> if that is in the future, or as soon as possible if it is in the |
129 | past. It will not automatically repeat. |
297 | past. It will not automatically repeat. |
130 | |
298 | |
131 | If the C<$interval> is nonzero, then the watcher will always be scheduled |
299 | If the C<$interval> is nonzero, then the watcher will always be scheduled |
132 | to time out at the next C<$at + integer * $interval> time. |
300 | to time out at the next C<$at + N * $interval> time. |
133 | |
301 | |
134 | This can be used to schedule a callback to run at very regular intervals, |
302 | This can be used to schedule a callback to run at very regular intervals, |
135 | as long as the processing time is less then the interval (otherwise |
303 | as long as the processing time is less then the interval (otherwise |
136 | obviously events will be skipped). |
304 | obviously events will be skipped). |
137 | |
305 | |
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306 | Another way to think about it (for the mathematically inclined) is that |
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307 | EV::periodic will try to run the callback at the next possible time where |
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308 | C<$time = $at (mod $interval)>, regardless of any time jumps. |
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309 | |
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310 | This periodic timer is based on "wallclock time", that is, if the clock |
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311 | changes (C<ntp>, C<date -s> etc.), then the timer will nevertheless run at |
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312 | the specified time. This means it will never drift (it might jitter, but |
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313 | it will not drift). |
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314 | |
138 | The C<timer_abs_ns> variant doesn't add/start the newly created watcher. |
315 | The C<periodic_ns> variant doesn't start (activate) the newly created watcher. |
139 | |
316 | |
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317 | =item $w->set ($at, $interval) |
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318 | |
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319 | Reconfigures the watcher, see the constructor above for details. Can be at |
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320 | any time. |
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321 | |
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322 | |
140 | =item my $w = EV::signal $signum, $callback |
323 | =item $w = EV::signal $signal, $callback |
141 | |
324 | |
142 | =item my $w = EV::signal_ns $signum, $callback |
325 | =item $w = EV::signal_ns $signal, $callback |
143 | |
326 | |
144 | Call the callback when signal $signum is received. |
327 | Call the callback when $signal is received (the signal can be specified |
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328 | by number or by name, just as with kill or %SIG). |
145 | |
329 | |
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330 | EV will grab the signal for the process (the kernel only allows one |
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331 | component to receive a signal at a time) when you start a signal watcher, |
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332 | and removes it again when you stop it. Perl does the same when you |
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333 | add/remove callbacks to %SIG, so watch out. |
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334 | |
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335 | You can have as many signal watchers per signal as you want. |
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336 | |
146 | The C<signal_ns> variant doesn't add/start the newly created watcher. |
337 | The C<signal_ns> variant doesn't start (activate) the newly created watcher. |
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338 | |
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339 | =item $w->set ($signal) |
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340 | |
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341 | Reconfigures the watcher, see the constructor above for details. Can be at |
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342 | any time. |
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343 | |
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344 | =item $current_signum = $w->signal |
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345 | |
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346 | =item $old_signum = $w->signal ($new_signal) |
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347 | |
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348 | Returns the previously set signal (always as a number not name) and |
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349 | optionally set a new one. |
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350 | |
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351 | |
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352 | =item $w = EV::child $pid, $callback |
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353 | |
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354 | =item $w = EV::child_ns $pid, $callback |
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355 | |
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356 | Call the callback when a status change for pid C<$pid> (or any pid |
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357 | if C<$pid> is 0) has been received. More precisely: when the process |
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358 | receives a SIGCHLD, EV will fetch the outstanding exit/wait status for all |
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359 | changed/zombie children and call the callback. |
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360 | |
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361 | Unlike all other callbacks, this callback will be called with an |
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362 | additional third argument which is the exit status. See the C<waitpid> |
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363 | function for details. |
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364 | |
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365 | You can have as many pid watchers per pid as you want. |
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366 | |
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367 | The C<child_ns> variant doesn't start (activate) the newly created watcher. |
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368 | |
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369 | =item $w->set ($pid) |
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370 | |
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371 | Reconfigures the watcher, see the constructor above for details. Can be at |
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372 | any time. |
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373 | |
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374 | =item $current_pid = $w->pid |
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375 | |
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376 | =item $old_pid = $w->pid ($new_pid) |
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377 | |
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378 | Returns the previously set process id and optionally set a new one. |
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379 | |
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380 | |
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381 | =item $w = EV::idle $callback |
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382 | |
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383 | =item $w = EV::idle_ns $callback |
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384 | |
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385 | Call the callback when there are no pending io, timer/periodic, signal or |
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386 | child events, i.e. when the process is idle. |
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387 | |
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388 | The process will not block as long as any idle watchers are active, and |
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389 | they will be called repeatedly until stopped. |
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390 | |
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391 | The C<idle_ns> variant doesn't start (activate) the newly created watcher. |
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392 | |
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393 | |
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394 | =item $w = EV::prepare $callback |
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395 | |
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396 | =item $w = EV::prepare_ns $callback |
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397 | |
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398 | Call the callback just before the process would block. You can still |
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399 | create/modify any watchers at this point. |
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400 | |
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401 | See the EV::check watcher, below, for explanations and an example. |
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402 | |
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403 | The C<prepare_ns> variant doesn't start (activate) the newly created watcher. |
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404 | |
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405 | |
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406 | =item $w = EV::check $callback |
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407 | |
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408 | =item $w = EV::check_ns $callback |
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409 | |
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410 | Call the callback just after the process wakes up again (after it has |
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411 | gathered events), but before any other callbacks have been invoked. |
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412 | |
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413 | This is used to integrate other event-based software into the EV |
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414 | mainloop: You register a prepare callback and in there, you create io and |
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415 | timer watchers as required by the other software. Here is a real-world |
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416 | example of integrating Net::SNMP (with some details left out): |
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417 | |
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418 | our @snmp_watcher; |
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419 | |
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420 | our $snmp_prepare = EV::prepare sub { |
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421 | # do nothing unless active |
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422 | $dispatcher->{_event_queue_h} |
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423 | or return; |
|
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424 | |
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425 | # make the dispatcher handle any outstanding stuff |
|
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426 | |
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427 | # create an IO watcher for each and every socket |
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428 | @snmp_watcher = ( |
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429 | (map { EV::io $_, EV::READ, sub { } } |
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430 | keys %{ $dispatcher->{_descriptors} }), |
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431 | ); |
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432 | |
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433 | # if there are any timeouts, also create a timer |
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434 | push @snmp_watcher, EV::timer $event->[Net::SNMP::Dispatcher::_TIME] - EV::now, 0, sub { } |
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435 | if $event->[Net::SNMP::Dispatcher::_ACTIVE]; |
|
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436 | }; |
|
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437 | |
|
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438 | The callbacks are irrelevant, the only purpose of those watchers is |
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439 | to wake up the process as soon as one of those events occurs (socket |
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440 | readable, or timer timed out). The corresponding EV::check watcher will then |
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441 | clean up: |
|
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442 | |
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443 | our $snmp_check = EV::check sub { |
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444 | # destroy all watchers |
|
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445 | @snmp_watcher = (); |
|
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446 | |
|
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447 | # make the dispatcher handle any new stuff |
|
|
448 | }; |
|
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449 | |
|
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450 | The callbacks of the created watchers will not be called as the watchers |
|
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451 | are destroyed before this cna happen (remember EV::check gets called |
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452 | first). |
|
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453 | |
|
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454 | The C<check_ns> variant doesn't start (activate) the newly created watcher. |
147 | |
455 | |
148 | =back |
456 | =back |
149 | |
457 | |
150 | =head1 THE EV::Event CLASS |
458 | =head1 THREADS |
151 | |
459 | |
152 | All EV functions creating an event watcher (designated by C<my $w => |
460 | Threads are not supported by this in any way. Perl pseudo-threads is evil |
153 | above) support the following methods on the returned watcher object: |
461 | stuff and must die. |
154 | |
|
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155 | =over 4 |
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156 | |
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157 | =item $w->add ($timeout) |
|
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158 | |
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159 | Stops and (re-)starts the event watcher, setting the optional timeout to |
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160 | the given value, or clearing the timeout if none is given. |
|
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161 | |
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162 | =item $w->start |
|
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163 | |
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164 | Stops and (re-)starts the event watcher without touching the timeout. |
|
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165 | |
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166 | =item $w->del |
|
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167 | |
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168 | =item $w->stop |
|
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169 | |
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170 | Stop the event watcher if it was started. |
|
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171 | |
|
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172 | =item $current_callback = $w->cb |
|
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173 | |
|
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174 | =item $old_callback = $w->cb ($new_callback) |
|
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175 | |
|
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176 | Return the previously set callback and optionally set a new one. |
|
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177 | |
|
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178 | =item $current_fh = $w->fh |
|
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179 | |
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180 | =item $old_fh = $w->fh ($new_fh) |
|
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181 | |
|
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182 | Returns the previously set filehandle and optionally set a new one. |
|
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183 | |
|
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184 | =item $current_eventmask = $w->events |
|
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185 | |
|
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186 | =item $old_eventmask = $w->events ($new_eventmask) |
|
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187 | |
|
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188 | Returns the previously set event mask and optionally set a new one. |
|
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189 | |
|
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190 | =item $w->timeout ($after, $repeat) |
|
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191 | |
|
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192 | Resets the timeout (see C<EV::timer> for details). |
|
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193 | |
|
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194 | =item $w->timeout_abs ($at, $interval) |
|
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195 | |
|
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196 | Resets the timeout (see C<EV::timer_abs> for details). |
|
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197 | |
|
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198 | =item $w->priority_set ($priority) |
|
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199 | |
|
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200 | Set the priority of the watcher to C<$priority> (0 <= $priority < $EV::NPRI). |
|
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201 | |
|
|
202 | =back |
|
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203 | |
|
|
204 | =head1 BUGS |
|
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205 | |
|
|
206 | Lots. Libevent itself isn't well tested and rather buggy, and this module |
|
|
207 | is quite new at the moment. |
|
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208 | |
462 | |
209 | =cut |
463 | =cut |
210 | |
464 | |
211 | our $NPRI = 4; |
465 | our $DIED = sub { |
212 | our $BASE = init; |
466 | warn "EV: error in callback (ignoring): $@"; |
213 | priority_init $NPRI; |
467 | }; |
|
|
468 | |
|
|
469 | init; |
|
|
470 | |
|
|
471 | push @AnyEvent::REGISTRY, [EV => "EV::AnyEvent"]; |
214 | |
472 | |
215 | 1; |
473 | 1; |
|
|
474 | |
|
|
475 | =head1 SEE ALSO |
|
|
476 | |
|
|
477 | L<EV::DNS>, L<EV::AnyEvent>. |
216 | |
478 | |
217 | =head1 AUTHOR |
479 | =head1 AUTHOR |
218 | |
480 | |
219 | Marc Lehmann <schmorp@schmorp.de> |
481 | Marc Lehmann <schmorp@schmorp.de> |
220 | http://home.schmorp.de/ |
482 | http://home.schmorp.de/ |