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- <meta name="created" content="Fri Dec 7 21:19:14 2007" />
+ <meta name="created" content="Sat Dec 8 15:27:35 2007" />
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<p>Returns a true value iff the watcher is pending, (i.e. it has outstanding
events but its callback has not yet been invoked). As long as a watcher
is pending (but not active) you must not call an init function on it (but
-<code>ev_TYPE_set</code> is safe) and you must make sure the watcher is available to
-libev (e.g. you cnanot <code>free ()</code> it).</p>
+<code>ev_TYPE_set</code> is safe), you must not change its priority, and you must
+make sure the watcher is available to libev (e.g. you cannot <code>free ()</code>
+it).</p>
</dd>
<dt>callback ev_cb (ev_TYPE *watcher)</dt>
<dd>
watchers on the same event and make sure one is called first.</p>
<p>If you need to suppress invocation when higher priority events are pending
you need to look at <code>ev_idle</code> watchers, which provide this functionality.</p>
+ <p>You <i>must not</i> change the priority of a watcher as long as it is active or
+pending.</p>
<p>The default priority used by watchers when no priority has been set is
always <code>0</code>, which is supposed to not be too high and not be too low :).</p>
<p>Setting a priority outside the range of <code>EV_MINPRI</code> to <code>EV_MAXPRI</code> is
fine, as long as you do not mind that the priority value you query might
or might not have been adjusted to be within valid range.</p>
</dd>
+ <dt>ev_invoke (loop, ev_TYPE *watcher, int revents)</dt>
+ <dd>
+ <p>Invoke the <code>watcher</code> with the given <code>loop</code> and <code>revents</code>. Neither
+<code>loop</code> nor <code>revents</code> need to be valid as long as the watcher callback
+can deal with that fact.</p>
+ </dd>
+ <dt>int ev_clear_pending (loop, ev_TYPE *watcher)</dt>
+ <dd>
+ <p>If the watcher is pending, this function returns clears its pending status
+and returns its <code>revents</code> bitset (as if its callback was invoked). If the
+watcher isn't pending it does nothing and returns <code>0</code>.</p>
+ </dd>
</dl>
</pre>
</dd>
- <dt>w->set (void (*function)(watcher &w, int), void *data = 0)</dt>
+ <dt>w->set<function> (void *data = 0)</dt>
<dd>
<p>Also sets a callback, but uses a static method or plain function as
callback. The optional <code>data</code> argument will be stored in the watcher's
<code>data</code> member and is free for you to use.</p>
+ <p>The prototype of the <code>function</code> must be <code>void (*)(ev::TYPE &w, int)</code>.</p>
<p>See the method-<code>set</code> above for more details.</p>
+ <p>Example:</p>
+<pre> static void io_cb (ev::io &w, int revents) { }
+ iow.set <io_cb> ();
+
+</pre>
</dd>
<dt>w->set (struct ev_loop *)</dt>
<dd>
projects / software / libev.git / blobdiff