a00192.html

uip-1.0,give everyone who want.

<a name="l00103"></a>00103     *datalen -= buf-&gt;<a class="code" href="a00083.html#20fae11b540a561c622a0d74cb4b9f97">left</a>;
<a name="l00104"></a>00104     *dataptr += buf-&gt;<a class="code" href="a00083.html#20fae11b540a561c622a0d74cb4b9f97">left</a>;
<a name="l00105"></a>00105     buf-&gt;<a class="code" href="a00083.html#20fae11b540a561c622a0d74cb4b9f97">left</a> = 0;
<a name="l00106"></a>00106     <span class="keywordflow">return</span> BUF_FULL;
<a name="l00107"></a>00107   }
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00110"></a>00110 <span class="keyword">static</span> <a class="code" href="a00153.html#g4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>
<a name="l00111"></a>00111 buf_bufto(<span class="keyword">register</span> <span class="keyword">struct</span> <a class="code" href="a00083.html">psock_buf</a> *buf, <a class="code" href="a00153.html#g4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> endmarker,
<a name="l00112"></a>00112           <span class="keyword">register</span> <a class="code" href="a00153.html#g4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> **dataptr, <span class="keyword">register</span> <a class="code" href="a00153.html#g77570ac4fcab86864fa1916e55676da2">u16_t</a> *datalen)
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114   <a class="code" href="a00153.html#g4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> c;
<a name="l00115"></a>00115   <span class="keywordflow">while</span>(buf-&gt;left &gt; 0 &amp;&amp; *datalen &gt; 0) {
<a name="l00116"></a>00116     c = *buf-&gt;ptr = **dataptr;
<a name="l00117"></a>00117     ++*dataptr;
<a name="l00118"></a>00118     ++buf-&gt;ptr;
<a name="l00119"></a>00119     --*datalen;
<a name="l00120"></a>00120     --buf-&gt;left;
<a name="l00121"></a>00121     
<a name="l00122"></a>00122     <span class="keywordflow">if</span>(c == endmarker) {
<a name="l00123"></a>00123       <span class="keywordflow">return</span> BUF_FOUND;
<a name="l00124"></a>00124     }
<a name="l00125"></a>00125   }
<a name="l00126"></a>00126 
<a name="l00127"></a>00127   <span class="keywordflow">if</span>(*datalen == 0) {
<a name="l00128"></a>00128     <span class="keywordflow">return</span> BUF_NOT_FOUND;
<a name="l00129"></a>00129   }
<a name="l00130"></a>00130 
<a name="l00131"></a>00131   <span class="keywordflow">while</span>(*datalen &gt; 0) {
<a name="l00132"></a>00132     c = **dataptr;
<a name="l00133"></a>00133     --*datalen;
<a name="l00134"></a>00134     ++*dataptr;
<a name="l00135"></a>00135     
<a name="l00136"></a>00136     <span class="keywordflow">if</span>(c == endmarker) {
<a name="l00137"></a>00137       <span class="keywordflow">return</span> BUF_FOUND | BUF_FULL;
<a name="l00138"></a>00138     }
<a name="l00139"></a>00139   }
<a name="l00140"></a>00140   
<a name="l00141"></a>00141   <span class="keywordflow">return</span> BUF_FULL;
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00144"></a>00144 <span class="keyword">static</span> <span class="keywordtype">char</span>
<a name="l00145"></a>00145 send_data(<span class="keyword">register</span> <span class="keyword">struct</span> <a class="code" href="a00082.html">psock</a> *s)
<a name="l00146"></a>00146 {
<a name="l00147"></a>00147   <span class="keywordflow">if</span>(s-&gt;state != STATE_DATA_SENT || <a class="code" href="a00147.html#ga8933ad15a2e2947dae4a5cff50e6007">uip_rexmit</a>()) {
<a name="l00148"></a>00148     <span class="keywordflow">if</span>(s-&gt;sendlen &gt; <a class="code" href="a00147.html#gb5fecbc62edd128012cea0f47b57ab9f">uip_mss</a>()) {
<a name="l00149"></a>00149       <a class="code" href="a00147.html#g04b053a623aac7cd4195157d470661b3">uip_send</a>(s-&gt;sendptr, <a class="code" href="a00147.html#gb5fecbc62edd128012cea0f47b57ab9f">uip_mss</a>());
<a name="l00150"></a>00150     } <span class="keywordflow">else</span> {
<a name="l00151"></a>00151       <a class="code" href="a00147.html#g04b053a623aac7cd4195157d470661b3">uip_send</a>(s-&gt;sendptr, s-&gt;sendlen);
<a name="l00152"></a>00152     }
<a name="l00153"></a>00153     s-&gt;state = STATE_DATA_SENT;
<a name="l00154"></a>00154     <span class="keywordflow">return</span> 1;
<a name="l00155"></a>00155   }
<a name="l00156"></a>00156   <span class="keywordflow">return</span> 0;
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00159"></a>00159 <span class="keyword">static</span> <span class="keywordtype">char</span>
<a name="l00160"></a>00160 data_acked(<span class="keyword">register</span> <span class="keyword">struct</span> <a class="code" href="a00082.html">psock</a> *s)
<a name="l00161"></a>00161 {
<a name="l00162"></a>00162   <span class="keywordflow">if</span>(s-&gt;state == STATE_DATA_SENT &amp;&amp; <a class="code" href="a00147.html#gde6634974418e3240c212b9b16864368">uip_acked</a>()) {
<a name="l00163"></a>00163     <span class="keywordflow">if</span>(s-&gt;sendlen &gt; <a class="code" href="a00147.html#gb5fecbc62edd128012cea0f47b57ab9f">uip_mss</a>()) {
<a name="l00164"></a>00164       s-&gt;sendlen -= <a class="code" href="a00147.html#gb5fecbc62edd128012cea0f47b57ab9f">uip_mss</a>();
<a name="l00165"></a>00165       s-&gt;sendptr += <a class="code" href="a00147.html#gb5fecbc62edd128012cea0f47b57ab9f">uip_mss</a>();
<a name="l00166"></a>00166     } <span class="keywordflow">else</span> {
<a name="l00167"></a>00167       s-&gt;sendptr += s-&gt;sendlen;
<a name="l00168"></a>00168       s-&gt;sendlen = 0;
<a name="l00169"></a>00169     }
<a name="l00170"></a>00170     s-&gt;state = STATE_ACKED;
<a name="l00171"></a>00171     <span class="keywordflow">return</span> 1;
<a name="l00172"></a>00172   }
<a name="l00173"></a>00173   <span class="keywordflow">return</span> 0;
<a name="l00174"></a>00174 }
<a name="l00175"></a>00175 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00176"></a>00176 <a class="code" href="a00142.html#g3d4c8bd4aada659eb34f5d2ffd3e7901">PT_THREAD</a>(psock_send(<span class="keyword">register</span> <span class="keyword">struct</span> <a class="code" href="a00082.html">psock</a> *s, <span class="keyword">const</span> <span class="keywordtype">char</span> *buf,
<a name="l00177"></a>00177                      <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> len))
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179   <a class="code" href="a00142.html#g2ffbb9e554e08a343ae2f9de4bedfdfc">PT_BEGIN</a>(&amp;s-&gt;psockpt);
<a name="l00180"></a>00180 
<a name="l00181"></a>00181   <span class="comment">/* If there is no data to send, we exit immediately. */</span>
<a name="l00182"></a>00182   <span class="keywordflow">if</span>(len == 0) {
<a name="l00183"></a>00183     <a class="code" href="a00142.html#g905451249dca72ce0385bf2a9ff178ee">PT_EXIT</a>(&amp;s-&gt;psockpt);
<a name="l00184"></a>00184   }
<a name="l00185"></a>00185 
<a name="l00186"></a>00186   <span class="comment">/* Save the length of and a pointer to the data that is to be</span>
<a name="l00187"></a>00187 <span class="comment">     sent. */</span>
<a name="l00188"></a>00188   s-&gt;sendptr = buf;
<a name="l00189"></a>00189   s-&gt;sendlen = len;
<a name="l00190"></a>00190 
<a name="l00191"></a>00191   s-&gt;state = STATE_NONE;
<a name="l00192"></a>00192 
<a name="l00193"></a>00193   <span class="comment">/* We loop here until all data is sent. The s-&gt;sendlen variable is</span>
<a name="l00194"></a>00194 <span class="comment">     updated by the data_sent() function. */</span>
<a name="l00195"></a>00195   <span class="keywordflow">while</span>(s-&gt;sendlen &gt; 0) {
<a name="l00196"></a>00196 
<a name="l00197"></a>00197     <span class="comment">/*</span>
<a name="l00198"></a>00198 <span class="comment">     * The condition for this PT_WAIT_UNTIL is a little tricky: the</span>
<a name="l00199"></a>00199 <span class="comment">     * protothread will wait here until all data has been acknowledged</span>
<a name="l00200"></a>00200 <span class="comment">     * (data_acked() returns true) and until all data has been sent</span>
<a name="l00201"></a>00201 <span class="comment">     * (send_data() returns true). The two functions data_acked() and</span>
<a name="l00202"></a>00202 <span class="comment">     * send_data() must be called in succession to ensure that all</span>
<a name="l00203"></a>00203 <span class="comment">     * data is sent. Therefore the &amp; operator is used instead of the</span>
<a name="l00204"></a>00204 <span class="comment">     * &amp;&amp; operator, which would cause only the data_acked() function</span>
<a name="l00205"></a>00205 <span class="comment">     * to be called when it returns false.</span>
<a name="l00206"></a>00206 <span class="comment">     */</span>
<a name="l00207"></a>00207     <a class="code" href="a00142.html#g99e43010ec61327164466aa2d902de45">PT_WAIT_UNTIL</a>(&amp;s-&gt;psockpt, data_acked(s) &amp; send_data(s));
<a name="l00208"></a>00208   }
<a name="l00209"></a>00209 
<a name="l00210"></a>00210   s-&gt;state = STATE_NONE;
<a name="l00211"></a>00211   
<a name="l00212"></a>00212   <a class="code" href="a00142.html#g7b04a0035bef29d905496c23bae066d2">PT_END</a>(&amp;s-&gt;psockpt);
<a name="l00213"></a>00213 }
<a name="l00214"></a>00214 <span class="comment">/*---------------------------------------------------------------------------*/</span>
<a name="l00215"></a>00215 <a class="code" href="a00142.html#g3d4c8bd4aada659eb34f5d2ffd3e7901">PT_THREAD</a>(psock_generator_send(<span class="keyword">register</span> <span class="keyword">struct</span> <a class="code" href="a00082.html">psock</a> *s,
<a name="l00216"></a>00216                                <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> (*generate)(<span class="keywordtype">void</span> *), <span class="keywordtype">void</span> *arg))
<a name="l00217"></a>00217 {
<a name="l00218"></a>00218   <a class="code" href="a00142.html#g2ffbb9e554e08a343ae2f9de4bedfdfc">PT_BEGIN</a>(&amp;s-&gt;psockpt);
<a name="l00219"></a>00219 
<a name="l00220"></a>00220   <span class="comment">/* Ensure that there is a generator function to call. */</span>
<a name="l00221"></a>00221   <span class="keywordflow">if</span>(generate == <a class="code" href="a00160.html#g070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {
<a name="l00222"></a>00222     <a class="code" href="a00142.html#g905451249dca72ce0385bf2a9ff178ee">PT_EXIT</a>(&amp;s-&gt;psockpt);
<a name="l00223"></a>00223   }
<a name="l00224"></a>00224