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libdtn-devel-2.6.0-2mdv2009.1.i586.rpm

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<h1>FragmentManager.h</h1><a href="FragmentManager_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> *    Copyright 2004-2006 Intel Corporation</span>
<a name="l00003"></a>00003 <span class="comment"> * </span>
<a name="l00004"></a>00004 <span class="comment"> *    Licensed under the Apache License, Version 2.0 (the "License");</span>
<a name="l00005"></a>00005 <span class="comment"> *    you may not use this file except in compliance with the License.</span>
<a name="l00006"></a>00006 <span class="comment"> *    You may obtain a copy of the License at</span>
<a name="l00007"></a>00007 <span class="comment"> * </span>
<a name="l00008"></a>00008 <span class="comment"> *        http://www.apache.org/licenses/LICENSE-2.0</span>
<a name="l00009"></a>00009 <span class="comment"> * </span>
<a name="l00010"></a>00010 <span class="comment"> *    Unless required by applicable law or agreed to in writing, software</span>
<a name="l00011"></a>00011 <span class="comment"> *    distributed under the License is distributed on an "AS IS" BASIS,</span>
<a name="l00012"></a>00012 <span class="comment"> *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<a name="l00013"></a>00013 <span class="comment"> *    See the License for the specific language governing permissions and</span>
<a name="l00014"></a>00014 <span class="comment"> *    limitations under the License.</span>
<a name="l00015"></a>00015 <span class="comment"> */</span>
<a name="l00016"></a>00016 
<a name="l00017"></a>00017 <span class="preprocessor">#ifndef __FRAGMENT_MANAGER_H__</span>
<a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor">#define __FRAGMENT_MANAGER_H__</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include &lt;string&gt;</span>
<a name="l00021"></a>00021 <span class="preprocessor">#include &lt;oasys/debug/Log.h&gt;</span>
<a name="l00022"></a>00022 <span class="preprocessor">#include &lt;oasys/util/StringUtils.h&gt;</span>
<a name="l00023"></a>00023 
<a name="l00024"></a>00024 <span class="keyword">namespace </span>oasys {
<a name="l00025"></a>00025 <span class="keyword">class </span>SpinLock;
<a name="l00026"></a>00026 }
<a name="l00027"></a>00027 
<a name="l00028"></a>00028 <span class="keyword">namespace </span>dtn {
<a name="l00029"></a>00029 
<a name="l00030"></a>00030 <span class="keyword">class </span>Link;
<a name="l00031"></a>00031 <span class="keyword">class </span>Bundle;
<a name="l00032"></a>00032 <span class="keyword">class </span>BundleList;
<a name="l00033"></a>00033 <span class="keyword">class </span>BlockInfoVec;
<a name="l00034"></a>00034 <span class="keyword">class </span>FragmentState;
<a name="l00035"></a>00035 <span class="keyword">class </span>BlockInfoPointerList;
<a name="l00036"></a>00036 
<a name="l00037"></a>00037 <span class="comment">// XXX/demmer should change the overall flow of the reassembly so all</span>
<a name="l00038"></a>00038 <span class="comment">// arriving bundle fragments are enqueued onto the appropriate</span>
<a name="l00039"></a>00039 <span class="comment">// reassembly state list immediately -- in fact all the fragmentation</span>
<a name="l00040"></a>00040 <span class="comment">// and reassembly stuff needs rework</span>
<a name="l00041"></a>00041 
<a name="l00049"></a><a class="code" href="classdtn_1_1FragmentManager.html">00049</a> <span class="keyword">class </span><a class="code" href="classdtn_1_1FragmentManager.html" title="The Fragment Manager maintains state for all of the fragmentary bundles, reconstructing...">FragmentManager</a> : <span class="keyword">public</span> oasys::<a class="code" href="classoasys_1_1Logger.html">Logger</a> {
<a name="l00050"></a>00050 <span class="keyword">public</span>:
<a name="l00054"></a>00054     <a class="code" href="classdtn_1_1FragmentManager.html#694dece64b76aaddff128b23e3c5a06f" title="Constructor.">FragmentManager</a>();
<a name="l00055"></a>00055     
<a name="l00075"></a>00075     <a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* <a class="code" href="classdtn_1_1FragmentManager.html#f6f29fb926b821b27d8d6cda64ffa96a" title="Create a bundle fragment from another bundle.">create_fragment</a>(<a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* bundle,
<a name="l00076"></a>00076                             <a class="code" href="classdtn_1_1BlockInfoVec.html" title="Class for a vector of BlockInfo structures.">BlockInfoVec</a>* blocks,
<a name="l00077"></a>00077                             <span class="keywordtype">size_t</span> offset,
<a name="l00078"></a>00078                             <span class="keywordtype">size_t</span> length);
<a name="l00079"></a>00079 
<a name="l00083"></a>00083     <a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* <a class="code" href="classdtn_1_1FragmentManager.html#f6f29fb926b821b27d8d6cda64ffa96a" title="Create a bundle fragment from another bundle.">create_fragment</a>(<a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* bundle,
<a name="l00084"></a>00084                             <span class="keyword">const</span> <a class="code" href="namespacedtn.html#6efb37e503f8062c537b022eb755b94e" title="Typedef for a reference on a link.">LinkRef</a>&amp; link,
<a name="l00085"></a>00085                             <span class="keyword">const</span> <a class="code" href="classdtn_1_1BlockInfoPointerList.html">BlockInfoPointerList</a>&amp; blocks_to_copy,
<a name="l00086"></a>00086                             <span class="keywordtype">size_t</span> offset, 
<a name="l00087"></a>00087                             <span class="keywordtype">size_t</span> length);
<a name="l00088"></a>00088 
<a name="l00095"></a>00095     <span class="keywordtype">void</span> <a class="code" href="classdtn_1_1FragmentManager.html#78e055f146c81f00cb1a0a82324cd585" title="Turn a bundle into a fragment.">convert_to_fragment</a>(<a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* bundle, <span class="keywordtype">size_t</span> length);
<a name="l00096"></a>00096 
<a name="l00106"></a>00106     <a class="code" href="classdtn_1_1FragmentState.html">FragmentState</a>* <a class="code" href="classdtn_1_1FragmentManager.html#fbc6aa92f31a9e8a72cadb302e9c8a54" title="Given the given fragmentation threshold, determine whether the given bundle should...">proactively_fragment</a>(<a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* bundle, 
<a name="l00107"></a>00107                                         <span class="keyword">const</span> <a class="code" href="namespacedtn.html#6efb37e503f8062c537b022eb755b94e" title="Typedef for a reference on a link.">LinkRef</a>&amp; link,
<a name="l00108"></a>00108                                         <span class="keywordtype">size_t</span> max_length);
<a name="l00109"></a>00109     
<a name="l00110"></a>00110     <a class="code" href="classdtn_1_1FragmentState.html">FragmentState</a>* <a class="code" href="classdtn_1_1FragmentManager.html#6d648fcee877721cf9e6448b24641246">get_fragment_state</a>(<a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* bundle);
<a name="l00111"></a>00111     
<a name="l00112"></a>00112     <span class="keywordtype">void</span> <a class="code" href="classdtn_1_1FragmentManager.html#1e7b45257f6281030c8fe71fa2f809db">erase_fragment_state</a>(<a class="code" href="classdtn_1_1FragmentState.html">FragmentState</a>* fragment);
<a name="l00113"></a>00113 
<a name="l00120"></a>00120     <span class="keywordtype">bool</span> <a class="code" href="classdtn_1_1FragmentManager.html#2f9394ef9f40337b95fed1f6cca381ac" title="If only part of the given bundle was sent successfully, split it into two.">try_to_reactively_fragment</a>(<a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* bundle, <a class="code" href="classdtn_1_1BlockInfoVec.html" title="Class for a vector of BlockInfo structures.">BlockInfoVec</a> *blocks,
<a name="l00121"></a>00121                                     <span class="keywordtype">size_t</span> bytes_sent);
<a name="l00122"></a>00122 
<a name="l00128"></a>00128     <span class="keywordtype">bool</span> <a class="code" href="classdtn_1_1FragmentManager.html#d3a2b8e4ecd2838da9caee845f47dccb" title="Convert a partially received bundle into a fragment.">try_to_convert_to_fragment</a>(<a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* bundle);
<a name="l00129"></a>00129     
<a name="l00136"></a>00136     <span class="keywordtype">void</span> <a class="code" href="classdtn_1_1FragmentManager.html#06ba9686e9d9a7fca8cdc31c3ffca187" title="Given a newly arrived bundle fragment, append it to the table of fragments and see...">process_for_reassembly</a>(<a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* fragment);
<a name="l00137"></a>00137 
<a name="l00141"></a>00141     <span class="keywordtype">void</span> <a class="code" href="classdtn_1_1FragmentManager.html#900e9f477dc6ff5aac6cd6621daf04d9" title="Delete any fragments that are no longer needed given the incoming (non-fragment)...">delete_obsoleted_fragments</a>(<a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* fragment);
<a name="l00142"></a>00142 
<a name="l00146"></a>00146     <span class="keywordtype">void</span> <a class="code" href="classdtn_1_1FragmentManager.html#3cf63b648553dda12d36e0f05d17380e" title="Delete reassembly state for a bundle.">delete_fragment</a>(<a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>* fragment);
<a name="l00147"></a>00147     
<a name="l00148"></a>00148  <span class="keyword">protected</span>:
<a name="l00152"></a>00152     <span class="keywordtype">void</span> <a class="code" href="classdtn_1_1FragmentManager.html#14e6759dca799277da24a3425274d9f9" title="Calculate a hash table key from a bundle.">get_hash_key</a>(<span class="keyword">const</span> <a class="code" href="classdtn_1_1Bundle.html" title="The internal representation of a bundle.">Bundle</a>*, std::string* key);
<a name="l00153"></a>00153 
<a name="l00157"></a>00157     <span class="comment">//bool check_completed(FragmentState* state);</span>
<a name="l00158"></a>00158 
<a name="l00160"></a><a class="code" href="classdtn_1_1FragmentManager.html#a89f7eb445d19fa240f69b36b4ee89e4">00160</a>     <span class="keyword">typedef</span> oasys::StringHashMap&lt;FragmentState*&gt; <a class="code" href="classdtn_1_1FragmentManager.html#a89f7eb445d19fa240f69b36b4ee89e4" title="Check if the bundle has been completely reassembled.">FragmentTable</a>;
<a name="l00161"></a><a class="code" href="classdtn_1_1FragmentManager.html#c16a79e94b6eb8ac6aeed3f52752022b">00161</a>     <a class="code" href="classdtn_1_1FragmentManager.html#a89f7eb445d19fa240f69b36b4ee89e4" title="Check if the bundle has been completely reassembled.">FragmentTable</a> <a class="code" href="classdtn_1_1FragmentManager.html#c16a79e94b6eb8ac6aeed3f52752022b">fragment_table_</a>;
<a name="l00162"></a>00162 };
<a name="l00163"></a>00163 
<a name="l00164"></a>00164 } <span class="comment">// namespace dtn</span>
<a name="l00165"></a>00165 
<a name="l00166"></a>00166 <span class="preprocessor">#endif </span><span class="comment">/* __FRAGMENT_MANAGER_H__ */</span>
</pre></div></div>
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