libs/context/doc/html/context/cc/class__continuation_.html

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  24 </div>
  25 <div class="section">
  26 <div class="titlepage"><div><div><h3 class="title">
  27 <a name="context.cc.class__continuation_"></a><a class="link" href="class__continuation_.html" title="Class continuation">Class <code class="computeroutput"><span class="identifier">continuation</span></code></a>
  28 </h3></div></div></div>
  29 <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">context</span><span class="special">/</span><span class="identifier">continuation</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
  30
  31 <span class="keyword">class</span> <span class="identifier">continuation</span> <span class="special">{</span>
  32 <span class="keyword">public</span><span class="special">:</span>
  33     <span class="identifier">continuation</span><span class="special">()</span> <span class="keyword">noexcept</span> <span class="special">=</span> <span class="keyword">default</span><span class="special">;</span>
  34
  35     <span class="special">~</span><span class="identifier">continuation</span><span class="special">();</span>
  36
  37     <span class="identifier">continuation</span><span class="special">(</span><span class="identifier">continuation</span> <span class="special">&amp;&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  38
  39     <span class="identifier">continuation</span> <span class="special">&amp;</span> <span class="keyword">operator</span><span class="special">=(</span><span class="identifier">continuation</span> <span class="special">&amp;&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  40
  41     <span class="identifier">continuation</span><span class="special">(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">noexcept</span> <span class="special">=</span> <span class="keyword">delete</span><span class="special">;</span>
  42     <span class="identifier">continuation</span> <span class="special">&amp;</span> <span class="keyword">operator</span><span class="special">=(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">noexcept</span> <span class="special">=</span> <span class="keyword">delete</span><span class="special">;</span>
  43
  44     <span class="identifier">continuation</span> <span class="identifier">resume</span><span class="special">();</span>
  45
  46     <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Fn</span><span class="special">&gt;</span>
  47     <span class="identifier">continuation</span> <span class="identifier">resume_with</span><span class="special">(</span><span class="identifier">Fn</span> <span class="special">&amp;&amp;</span> <span class="identifier">fn</span><span class="special">);</span>
  48
  49     <span class="keyword">explicit</span> <span class="keyword">operator</span> <span class="keyword">bool</span><span class="special">()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  50
  51     <span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">!()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  52
  53     <span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">==(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  54
  55     <span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">!=(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  56
  57     <span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&lt;(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  58
  59     <span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&gt;(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  60
  61     <span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&lt;=(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  62
  63     <span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&gt;=(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  64
  65     <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">charT</span><span class="special">,</span><span class="keyword">class</span> <span class="identifier">traitsT</span><span class="special">&gt;</span>
  66     <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span><span class="identifier">traitsT</span><span class="special">&gt;</span> <span class="special">&amp;</span>
  67     <span class="keyword">operator</span><span class="special">&lt;&lt;(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span><span class="identifier">traitsT</span><span class="special">&gt;</span> <span class="special">&amp;</span> <span class="identifier">os</span><span class="special">,</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="special">{</span>
  68
  69     <span class="keyword">void</span> <span class="identifier">swap</span><span class="special">(</span><span class="identifier">continuation</span> <span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  70 <span class="special">};</span>
  71 </pre>
  72 <p>
  73         </p>
  74 <h5>
  75 <a name="cc_constructor_bridgehead"></a>
  76   <span class="phrase"><a name="cc_constructor"></a></span>
  77   <a class="link" href="class__continuation_.html#cc_constructor">Constructor</a>
  78 </h5>
  79 <p>
  80       </p>
  81 <pre class="programlisting"><span class="identifier">continuation</span><span class="special">()</span> <span class="keyword">noexcept</span><span class="special">;</span>
  82 </pre>
  83 <div class="variablelist">
  84 <p class="title"><b></b></p>
  85 <dl class="variablelist">
  86 <dt><span class="term">Effects:</span></dt>
  87 <dd><p>
  88               Creates a invalid continuation.
  89             </p></dd>
  90 <dt><span class="term">Throws:</span></dt>
  91 <dd><p>
  92               Nothing.
  93             </p></dd>
  94 </dl>
  95 </div>
  96 <p>
  97         </p>
  98 <h5>
  99 <a name="cc_destructor%20destructor_bridgehead"></a>
 100   <span class="phrase"><a name="cc_destructor%20destructor"></a></span>
 101   <a class="link" href="class__continuation_.html#cc_destructor%20destructor">Destructor</a>
 102 </h5>
 103 <p>
 104       </p>
 105 <pre class="programlisting"><span class="special">~</span><span class="identifier">continuation</span><span class="special">();</span>
 106 </pre>
 107 <div class="variablelist">
 108 <p class="title"><b></b></p>
 109 <dl class="variablelist">
 110 <dt><span class="term">Effects:</span></dt>
 111 <dd><p>
 112               Destructs the associated stack if <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code> is a valid continuation, e.g.
 113               <span class="emphasis"><em>continuation::operator bool()</em></span> returns <code class="computeroutput"><span class="keyword">true</span></code>.
 114             </p></dd>
 115 <dt><span class="term">Throws:</span></dt>
 116 <dd><p>
 117               Nothing.
 118             </p></dd>
 119 </dl>
 120 </div>
 121 <p>
 122         </p>
 123 <h5>
 124 <a name="cc_move%20constructor_bridgehead"></a>
 125   <span class="phrase"><a name="cc_move%20constructor"></a></span>
 126   <a class="link" href="class__continuation_.html#cc_move%20constructor">Move
 127         constructor</a>
 128 </h5>
 129 <p>
 130       </p>
 131 <pre class="programlisting"><span class="identifier">continuation</span><span class="special">(</span><span class="identifier">continuation</span> <span class="special">&amp;&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
 132 </pre>
 133 <div class="variablelist">
 134 <p class="title"><b></b></p>
 135 <dl class="variablelist">
 136 <dt><span class="term">Effects:</span></dt>
 137 <dd><p>
 138               Moves underlying capture continuation to <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code>.
 139             </p></dd>
 140 <dt><span class="term">Throws:</span></dt>
 141 <dd><p>
 142               Nothing.
 143             </p></dd>
 144 </dl>
 145 </div>
 146 <p>
 147         </p>
 148 <h5>
 149 <a name="cc_move%20assignment_bridgehead"></a>
 150   <span class="phrase"><a name="cc_move%20assignment"></a></span>
 151   <a class="link" href="class__continuation_.html#cc_move%20assignment">Move assignment
 152         operator</a>
 153 </h5>
 154 <p>
 155       </p>
 156 <pre class="programlisting"><span class="identifier">continuation</span> <span class="special">&amp;</span> <span class="keyword">operator</span><span class="special">=(</span><span class="identifier">continuation</span> <span class="special">&amp;&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
 157 </pre>
 158 <div class="variablelist">
 159 <p class="title"><b></b></p>
 160 <dl class="variablelist">
 161 <dt><span class="term">Effects:</span></dt>
 162 <dd><p>
 163               Moves the state of <code class="computeroutput"><span class="identifier">other</span></code>
 164               to <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code>
 165               using move semantics.
 166             </p></dd>
 167 <dt><span class="term">Throws:</span></dt>
 168 <dd><p>
 169               Nothing.
 170             </p></dd>
 171 </dl>
 172 </div>
 173 <p>
 174         </p>
 175 <h5>
 176 <a name="cc_operator_call_bridgehead"></a>
 177   <span class="phrase"><a name="cc_operator_call"></a></span>
 178   <a class="link" href="class__continuation_.html#cc_operator_call">Member function
 179         <code class="computeroutput">operator()</code>()</a>
 180 </h5>
 181 <p>
 182       </p>
 183 <pre class="programlisting"><span class="identifier">continuation</span> <span class="identifier">resume</span><span class="special">();</span>
 184
 185 <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Fn</span><span class="special">&gt;</span>
 186 <span class="identifier">continuation</span> <span class="identifier">resume_with</span><span class="special">(</span><span class="identifier">Fn</span> <span class="special">&amp;&amp;</span> <span class="identifier">fn</span><span class="special">);</span>
 187 </pre>
 188 <div class="variablelist">
 189 <p class="title"><b></b></p>
 190 <dl class="variablelist">
 191 <dt><span class="term">Effects:</span></dt>
 192 <dd><p>
 193               Captures current continuation and resumes <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code>. The function <code class="computeroutput"><span class="identifier">resume_with</span></code>,
 194               is used to execute function <code class="computeroutput"><span class="identifier">fn</span></code>
 195               in the execution context of <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code> (e.g. the stack frame of <code class="computeroutput"><span class="identifier">fn</span></code> is allocated on stack of <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code>).
 196             </p></dd>
 197 <dt><span class="term">Returns:</span></dt>
 198 <dd><p>
 199               The continuation representing the continuation that has been suspended.
 200             </p></dd>
 201 <dt><span class="term">Note:</span></dt>
 202 <dd><p>
 203               Function <code class="computeroutput"><span class="identifier">fn</span></code> needs to
 204               return <code class="computeroutput"><span class="identifier">continuation</span></code>.
 205             </p></dd>
 206 <dt><span class="term">Note:</span></dt>
 207 <dd><p>
 208               The returned continuation indicates if the suspended continuation has
 209               terminated (return from context-function) via <code class="computeroutput"><span class="keyword">bool</span>
 210               <span class="keyword">operator</span><span class="special">()</span></code>.
 211             </p></dd>
 212 </dl>
 213 </div>
 214 <p>
 215         </p>
 216 <h5>
 217 <a name="cc_operator_bool_bridgehead"></a>
 218   <span class="phrase"><a name="cc_operator_bool"></a></span>
 219   <a class="link" href="class__continuation_.html#cc_operator_bool">Member function
 220         <code class="computeroutput">operator bool</code>()</a>
 221 </h5>
 222 <p>
 223       </p>
 224 <pre class="programlisting"><span class="keyword">explicit</span> <span class="keyword">operator</span> <span class="keyword">bool</span><span class="special">()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
 225 </pre>
 226 <div class="variablelist">
 227 <p class="title"><b></b></p>
 228 <dl class="variablelist">
 229 <dt><span class="term">Returns:</span></dt>
 230 <dd><p>
 231               <code class="computeroutput"><span class="keyword">true</span></code> if <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code>
 232               points to a captured continuation.
 233             </p></dd>
 234 <dt><span class="term">Throws:</span></dt>
 235 <dd><p>
 236               Nothing.
 237             </p></dd>
 238 </dl>
 239 </div>
 240 <p>
 241         </p>
 242 <h5>
 243 <a name="cc_operator_not_bridgehead"></a>
 244   <span class="phrase"><a name="cc_operator_not"></a></span>
 245   <a class="link" href="class__continuation_.html#cc_operator_not">Member function <code class="computeroutput">operator!</code>()</a>
 246 </h5>
 247 <p>
 248       </p>
 249 <pre class="programlisting"><span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">!()</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
 250 </pre>
 251 <div class="variablelist">
 252 <p class="title"><b></b></p>
 253 <dl class="variablelist">
 254 <dt><span class="term">Returns:</span></dt>
 255 <dd><p>
 256               <code class="computeroutput"><span class="keyword">true</span></code> if <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code>
 257               does not point to a captured continuation.
 258             </p></dd>
 259 <dt><span class="term">Throws:</span></dt>
 260 <dd><p>
 261               Nothing.
 262             </p></dd>
 263 </dl>
 264 </div>
 265 <p>
 266         </p>
 267 <h5>
 268 <a name="cc_operator_equal_bridgehead"></a>
 269   <span class="phrase"><a name="cc_operator_equal"></a></span>
 270   <a class="link" href="class__continuation_.html#cc_operator_equal">Member function
 271         <code class="computeroutput">operator==</code>()</a>
 272 </h5>
 273 <p>
 274       </p>
 275 <pre class="programlisting"><span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">==(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
 276 </pre>
 277 <div class="variablelist">
 278 <p class="title"><b></b></p>
 279 <dl class="variablelist">
 280 <dt><span class="term">Returns:</span></dt>
 281 <dd><p>
 282               <code class="computeroutput"><span class="keyword">true</span></code> if <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code>
 283               and <code class="computeroutput"><span class="identifier">other</span></code> represent
 284               the same continuation, <code class="computeroutput"><span class="keyword">false</span></code>
 285               otherwise.
 286             </p></dd>
 287 <dt><span class="term">Throws:</span></dt>
 288 <dd><p>
 289               Nothing.
 290             </p></dd>
 291 </dl>
 292 </div>
 293 <p>
 294         </p>
 295 <h5>
 296 <a name="cc_operator_notequal_bridgehead"></a>
 297   <span class="phrase"><a name="cc_operator_notequal"></a></span>
 298   <a class="link" href="class__continuation_.html#cc_operator_notequal">Member
 299         function <code class="computeroutput">operator!=</code>()</a>
 300 </h5>
 301 <p>
 302       </p>
 303 <pre class="programlisting"><span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">!=(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
 304 </pre>
 305 <div class="variablelist">
 306 <p class="title"><b></b></p>
 307 <dl class="variablelist">
 308 <dt><span class="term">Returns:</span></dt>
 309 <dd><p>
 310               <code class="computeroutput">! (other == * this)</code>
 311             </p></dd>
 312 <dt><span class="term">Throws:</span></dt>
 313 <dd><p>
 314               Nothing.
 315             </p></dd>
 316 </dl>
 317 </div>
 318 <p>
 319         </p>
 320 <h5>
 321 <a name="cc_operator_less_bridgehead"></a>
 322   <span class="phrase"><a name="cc_operator_less"></a></span>
 323   <a class="link" href="class__continuation_.html#cc_operator_less">Member function
 324         <code class="computeroutput">operator&lt;</code>()</a>
 325 </h5>
 326 <p>
 327       </p>
 328 <pre class="programlisting"><span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&lt;(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
 329 </pre>
 330 <div class="variablelist">
 331 <p class="title"><b></b></p>
 332 <dl class="variablelist">
 333 <dt><span class="term">Returns:</span></dt>
 334 <dd><p>
 335               <code class="computeroutput"><span class="keyword">true</span></code> if <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span> <span class="special">!=</span> <span class="identifier">other</span></code>
 336               is true and the implementation-defined total order of <code class="computeroutput"><span class="identifier">continuation</span></code> values places <code class="computeroutput"><span class="special">*</span><span class="keyword">this</span></code>
 337               before <code class="computeroutput"><span class="identifier">other</span></code>, false
 338               otherwise.
 339             </p></dd>
 340 <dt><span class="term">Throws:</span></dt>
 341 <dd><p>
 342               Nothing.
 343             </p></dd>
 344 </dl>
 345 </div>
 346 <p>
 347         </p>
 348 <h5>
 349 <a name="cc_operator_greater_bridgehead"></a>
 350   <span class="phrase"><a name="cc_operator_greater"></a></span>
 351   <a class="link" href="class__continuation_.html#cc_operator_greater">Member
 352         function <code class="computeroutput">operator&gt;</code>()</a>
 353 </h5>
 354 <p>
 355       </p>
 356 <pre class="programlisting"><span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&gt;(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
 357 </pre>
 358 <div class="variablelist">
 359 <p class="title"><b></b></p>
 360 <dl class="variablelist">
 361 <dt><span class="term">Returns:</span></dt>
 362 <dd><p>
 363               <code class="computeroutput"><span class="identifier">other</span> <span class="special">&lt;</span>
 364               <span class="special">*</span> <span class="keyword">this</span></code>
 365             </p></dd>
 366 <dt><span class="term">Throws:</span></dt>
 367 <dd><p>
 368               Nothing.
 369             </p></dd>
 370 </dl>
 371 </div>
 372 <p>
 373         </p>
 374 <h5>
 375 <a name="cc_operator_lesseq_bridgehead"></a>
 376   <span class="phrase"><a name="cc_operator_lesseq"></a></span>
 377   <a class="link" href="class__continuation_.html#cc_operator_lesseq">Member function
 378         <code class="computeroutput">operator&lt;=</code>()</a>
 379 </h5>
 380 <p>
 381       </p>
 382 <pre class="programlisting"><span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&lt;=(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
 383 </pre>
 384 <div class="variablelist">
 385 <p class="title"><b></b></p>
 386 <dl class="variablelist">
 387 <dt><span class="term">Returns:</span></dt>
 388 <dd><p>
 389               <code class="computeroutput"><span class="special">!</span> <span class="special">(</span><span class="identifier">other</span> <span class="special">&lt;</span>
 390               <span class="special">*</span> <span class="keyword">this</span><span class="special">)</span></code>
 391             </p></dd>
 392 <dt><span class="term">Throws:</span></dt>
 393 <dd><p>
 394               Nothing.
 395             </p></dd>
 396 </dl>
 397 </div>
 398 <p>
 399         </p>
 400 <h5>
 401 <a name="cc_operator_greatereq_bridgehead"></a>
 402   <span class="phrase"><a name="cc_operator_greatereq"></a></span>
 403   <a class="link" href="class__continuation_.html#cc_operator_greatereq">Member
 404         function <code class="computeroutput">operator&gt;=</code>()</a>
 405 </h5>
 406 <p>
 407       </p>
 408 <pre class="programlisting"><span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">&gt;=(</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
 409 </pre>
 410 <div class="variablelist">
 411 <p class="title"><b></b></p>
 412 <dl class="variablelist">
 413 <dt><span class="term">Returns:</span></dt>
 414 <dd><p>
 415               <code class="computeroutput"><span class="special">!</span> <span class="special">(*</span>
 416               <span class="keyword">this</span> <span class="special">&lt;</span>
 417               <span class="identifier">other</span><span class="special">)</span></code>
 418             </p></dd>
 419 <dt><span class="term">Throws:</span></dt>
 420 <dd><p>
 421               Nothing.
 422             </p></dd>
 423 </dl>
 424 </div>
 425 <p>
 426         </p>
 427 <h5>
 428 <a name="cc__bridgehead"></a>
 429   <span class="phrase"><a name="cc_"></a></span>
 430   <a class="link" href="class__continuation_.html#cc_">Non-member function <code class="computeroutput">operator&lt;&lt;()</code></a>
 431 </h5>
 432 <p>
 433       </p>
 434 <pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">charT</span><span class="special">,</span><span class="keyword">class</span> <span class="identifier">traitsT</span><span class="special">&gt;</span>
 435 <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span><span class="identifier">traitsT</span><span class="special">&gt;</span> <span class="special">&amp;</span>
 436 <span class="keyword">operator</span><span class="special">&lt;&lt;(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span><span class="identifier">charT</span><span class="special">,</span><span class="identifier">traitsT</span><span class="special">&gt;</span> <span class="special">&amp;</span> <span class="identifier">os</span><span class="special">,</span><span class="identifier">continuation</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">other</span><span class="special">);</span>
 437 </pre>
 438 <div class="variablelist">
 439 <p class="title"><b></b></p>
 440 <dl class="variablelist">
 441 <dt><span class="term">Effects:</span></dt>
 442 <dd><p>
 443               Writes the representation of <code class="computeroutput"><span class="identifier">other</span></code>
 444               to stream <code class="computeroutput"><span class="identifier">os</span></code>.
 445             </p></dd>
 446 <dt><span class="term">Returns:</span></dt>
 447 <dd><p>
 448               <code class="computeroutput"><span class="identifier">os</span></code>
 449             </p></dd>
 450 </dl>
 451 </div>
 452 <h5>
 453 <a name="context.cc.class__continuation_.h0"></a>
 454         <span class="phrase"><a name="context.cc.class__continuation_.call_with_current_continuation"></a></span><a class="link" href="class__continuation_.html#context.cc.class__continuation_.call_with_current_continuation">Call
 455         with current continuation</a>
 456       </h5>
 457 <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">context</span><span class="special">/</span><span class="identifier">continuation</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
 458
 459 <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Fn</span><span class="special">&gt;</span>
 460 <span class="identifier">continuation</span> <span class="identifier">callcc</span><span class="special">(</span><span class="identifier">Fn</span> <span class="special">&amp;&amp;</span> <span class="identifier">fn</span><span class="special">);</span>
 461
 462 <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">StackAlloc</span><span class="special">,</span><span class="keyword">typename</span> <span class="identifier">Fn</span><span class="special">&gt;</span>
 463 <span class="identifier">continuation</span> <span class="identifier">callcc</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">allocator_arg_t</span><span class="special">,</span><span class="identifier">StackAlloc</span> <span class="identifier">salloc</span><span class="special">,</span><span class="identifier">Fn</span> <span class="special">&amp;&amp;</span> <span class="identifier">fn</span><span class="special">);</span>
 464
 465 <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">StackAlloc</span><span class="special">,</span><span class="keyword">typename</span> <span class="identifier">Fn</span><span class="special">&gt;</span>
 466 <span class="identifier">continuation</span> <span class="identifier">callcc</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">allocator_arg_t</span><span class="special">,</span><span class="identifier">preallocated</span> <span class="identifier">palloc</span><span class="special">,</span><span class="identifier">StackAlloc</span> <span class="identifier">salloc</span><span class="special">,</span><span class="identifier">Fn</span> <span class="special">&amp;&amp;</span> <span class="identifier">fn</span><span class="special">);</span>
 467 </pre>
 468 <div class="variablelist">
 469 <p class="title"><b></b></p>
 470 <dl class="variablelist">
 471 <dt><span class="term">Effects:</span></dt>
 472 <dd><p>
 473               Captures current continuation and creates a new continuation prepared
 474               to execute <code class="computeroutput"><span class="identifier">fn</span></code>. <code class="computeroutput"><span class="identifier">fixedsize_stack</span></code> is used as default
 475               stack allocator (stack size == fixedsize_stack::traits::default_size()).
 476               The function with argument type <code class="computeroutput"><span class="identifier">preallocated</span></code>,
 477               is used to create a user defined data <a class="link" href="../cc.html#cc_prealloc">(for
 478               instance additional control structures)</a> on top of the stack.
 479             </p></dd>
 480 <dt><span class="term">Returns:</span></dt>
 481 <dd><p>
 482               The continuation representing the contexcontinuation that has been
 483               suspended.
 484             </p></dd>
 485 <dt><span class="term">Note:</span></dt>
 486 <dd><p>
 487               The returned continuation indicates if the suspended continuation has
 488               terminated (return from context-function) via <code class="computeroutput"><span class="keyword">bool</span>
 489               <span class="keyword">operator</span><span class="special">()</span></code>.
 490             </p></dd>
 491 </dl>
 492 </div>
 493 </div>
 494 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 495 <td align="left"></td>
 496 <td align="right"><div class="copyright-footer">Copyright &#169; 2014 Oliver Kowalke<p>
 497         Distributed under the Boost Software License, Version 1.0. (See accompanying
 498         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
 499       </p>
 500 </div></td>
 501 </tr></table>
 502 <hr>
 503 <div class="spirit-nav">
 504 <a accesskey="p" href="implementations__fcontext_t__ucontext_t_and_winfiber.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../cc.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../stack.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a>
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