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27 <a name="boost_asio.reference.basic_deadline_timer.expires_from_now.overload2"></a><a class="link" href="overload2.html" title="basic_deadline_timer::expires_from_now (2 of 3 overloads)">basic_deadline_timer::expires_from_now
28 (2 of 3 overloads)</a>
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31 Set the timer's expiry time relative to now.
33 <pre class="programlisting"><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">expires_from_now</span><span class="special">(</span>
34 <span class="keyword">const</span> <span class="identifier">duration_type</span> <span class="special">&</span> <span class="identifier">expiry_time</span><span class="special">);</span>
37 This function sets the expiry time. Any pending asynchronous wait operations
38 will be cancelled. The handler for each cancelled operation will be invoked
39 with the <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">error</span><span class="special">::</span><span class="identifier">operation_aborted</span></code> error code.
42 <a name="boost_asio.reference.basic_deadline_timer.expires_from_now.overload2.h0"></a>
43 <span class="phrase"><a name="boost_asio.reference.basic_deadline_timer.expires_from_now.overload2.parameters"></a></span><a class="link" href="overload2.html#boost_asio.reference.basic_deadline_timer.expires_from_now.overload2.parameters">Parameters</a>
45 <div class="variablelist">
46 <p class="title"><b></b></p>
47 <dl class="variablelist">
48 <dt><span class="term">expiry_time</span></dt>
50 The expiry time to be used for the timer.
55 <a name="boost_asio.reference.basic_deadline_timer.expires_from_now.overload2.h1"></a>
56 <span class="phrase"><a name="boost_asio.reference.basic_deadline_timer.expires_from_now.overload2.return_value"></a></span><a class="link" href="overload2.html#boost_asio.reference.basic_deadline_timer.expires_from_now.overload2.return_value">Return
60 The number of asynchronous operations that were cancelled.
63 <a name="boost_asio.reference.basic_deadline_timer.expires_from_now.overload2.h2"></a>
64 <span class="phrase"><a name="boost_asio.reference.basic_deadline_timer.expires_from_now.overload2.exceptions"></a></span><a class="link" href="overload2.html#boost_asio.reference.basic_deadline_timer.expires_from_now.overload2.exceptions">Exceptions</a>
66 <div class="variablelist">
67 <p class="title"><b></b></p>
68 <dl class="variablelist">
69 <dt><span class="term">boost::system::system_error</span></dt>
76 <a name="boost_asio.reference.basic_deadline_timer.expires_from_now.overload2.h3"></a>
77 <span class="phrase"><a name="boost_asio.reference.basic_deadline_timer.expires_from_now.overload2.remarks"></a></span><a class="link" href="overload2.html#boost_asio.reference.basic_deadline_timer.expires_from_now.overload2.remarks">Remarks</a>
80 If the timer has already expired when <code class="computeroutput"><span class="identifier">expires_from_now</span><span class="special">()</span></code> is called, then the handlers for asynchronous
83 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
85 have already been invoked; or
88 have been queued for invocation in the near future.
92 These handlers can no longer be cancelled, and therefore are passed an
93 error code that indicates the successful completion of the wait operation.
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