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137 lines
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<title>MPI On Cell (Documentation): src/spu/communication/moc_recv_spu.c Source File</title>
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<h1>src/spu/communication/moc_recv_spu.c</h1><a href="../../d9/dab/moc__recv__spu_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#include <string.h></span>
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<a name="l00002"></a>00002 <span class="preprocessor">#include <stdio.h></span>
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<a name="l00003"></a>00003 <span class="preprocessor">#include <spu_mfcio.h></span>
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<a name="l00004"></a>00004
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<a name="l00005"></a>00005 <span class="preprocessor">#include <<a class="code" href="../../d0/d3a/spu_2moc_8h.html">moc.h</a>></span>
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<a name="l00006"></a>00006 <span class="preprocessor">#include <<a class="code" href="../../d0/d1d/moc__datatype__spu_8h.html">spu/moc_datatype_spu.h</a>></span>
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<a name="l00007"></a>00007 <span class="preprocessor">#include <<a class="code" href="../../d9/db3/imoc_8h.html">internal/imoc.h</a>></span>
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<a name="l00008"></a>00008 <span class="preprocessor">#include <<a class="code" href="../../d2/d42/imoc__macros_8h.html">internal/imoc_macros.h</a>></span>
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<a name="l00009"></a>00009 <span class="preprocessor">#include <<a class="code" href="../../d4/dce/imoc__dma__spu_8h.html">internal/spu/imoc_dma_spu.h</a>></span>
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<a name="l00010"></a>00010 <span class="preprocessor">#include <<a class="code" href="../../d9/d00/imoc__core__spu_8h.html">internal/spu/imoc_core_spu.h</a>></span>
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<a name="l00011"></a>00011
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<a name="l00012"></a><a class="code" href="../../d0/d64/group__p2p__main.html#g30c532510cffd36acd1b9b0b3edb3832">00012</a> <span class="keywordtype">int</span> <a class="code" href="../../d0/d64/group__p2p__main.html#g30c532510cffd36acd1b9b0b3edb3832" title="Performs a blocking standard mode receive operation.">MOC_Recv</a>(<span class="keywordtype">void</span>* buf, <span class="keywordtype">int</span> count, <a class="code" href="../../dc/d6e/group__p2p__datatype.html#gb4e45f15c08578bd3fc97c0cca2a509a" title="Typedef defining MOC_Datatype.">MOC_Datatype</a> datatype, <span class="keywordtype">int</span> source, <span class="keywordtype">int</span> tag,
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<a name="l00013"></a>00013 <a class="code" href="../../d1/dd1/group__comm__mgt.html#g3d2b8a9af65bff5f79d02bda13616767" title="Communicator-Handle.">MOC_Comm</a> comm, <a class="code" href="../../dd/d7a/structMOC__Status__struct.html" title="Structure holding information about a received message.">MOC_Status</a> *status)
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<a name="l00014"></a>00014 {
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<a name="l00015"></a>00015
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<a name="l00016"></a>00016 <a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html" title="Message-envelope structure.">moc_message_envelope_t</a>* sourceQueueEntry;
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<a name="l00017"></a>00017 <a class="code" href="../../dd/df5/structmoc__message__status__struct.html" title="Message-status structure.">moc_message_status_t</a> sourceMessageStatus <a class="code" href="../../d3/dd3/group__internal__p2p__bmalloc.html#gad8750c7ba3d6da9c137c2c462d2c531" title="void bmalloc_print_nodes() { if (!bmalloc_first_node) printf(&quot;No nodes in list\n&quot;);...">__attribute__</a>((__aligned__(16)));
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<a name="l00018"></a>00018 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> tag_id;
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<a name="l00019"></a>00019 <span class="keywordtype">int</span> bytecount, err;
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<a name="l00020"></a>00020
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<a name="l00021"></a>00021 err = 0;
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<a name="l00022"></a>00022 <span class="keywordflow">if</span> (((datatype & 0xF0) >> 4) == 0)
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<a name="l00023"></a>00023 bytecount = count;
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<a name="l00024"></a>00024 <span class="keywordflow">else</span>
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<a name="l00025"></a>00025 bytecount = count * (((datatype & 0xF0) >> 4) * 2);
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<a name="l00026"></a>00026
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<a name="l00027"></a>00027 status-><a class="code" href="../../dd/d7a/structMOC__Status__struct.html#1a3fde58aca11d3b901c890916371661" title="message-source">MOC_SOURCE</a> = source;
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<a name="l00028"></a>00028 status-><a class="code" href="../../dd/d7a/structMOC__Status__struct.html#872c34c85569926730eebe10e47af384" title="message-size in byte (internal-variable)">message_size</a> = bytecount;
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<a name="l00029"></a>00029
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<a name="l00030"></a>00030 <a class="code" href="../../d3/d32/group__internal__tm.html#g615b65fb3c3ad16711686a178ac7d1c3" title="Tests if rank is MOC_PROC_NULL and returns with MOC_SUCCESS itself.">IMOC_TEST_PROC_NULL</a>(source)
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<a name="l00031"></a>00031 <a class="code" href="../../d3/d32/group__internal__tm.html#gf902b6e1cbe077abf0f8d02a488fec8a" title="Tests if rank is own rank and returns with MOC_SUCCESS itself.">IMOC_TEST_PROC_SELF</a>(source)
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<a name="l00032"></a>00032 <a class="code" href="../../d3/d32/group__internal__tm.html#g8026463e106a01cc8efb816d7dc1036a" title="Tests if invalid byte-count in a recv-operation.">IMOC_TEST_BYTECOUNT</a>(bytecount)
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<a name="l00033"></a>00033 <span class="comment">// if there is no data, permit Null-Buffer-Pointer</span>
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<a name="l00034"></a>00034 <span class="keywordflow">if</span> (bytecount != 0)
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<a name="l00035"></a>00035 {
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<a name="l00036"></a>00036 <a class="code" href="../../d3/d32/group__internal__tm.html#g52f61fd7f3253d10b740a9fc792052c6" title="Tests if invalid buffer-pointer.">IMOC_TEST_BUFFER</a>(buf)
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<a name="l00037"></a>00037 }
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<a name="l00038"></a>00038 <a class="code" href="../../d3/d32/group__internal__tm.html#g796b45379e44e6ad2d1895ac56d80d3c" title="Tests if invalid rank in a recv-operation.">IMOC_TEST_RANK_RECV</a>(source)
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<a name="l00039"></a>00039 <a class="code" href="../../d3/d32/group__internal__tm.html#ge0070a22959ddde28816cc5676687b1d" title="Tests if invalid tag in a recv-operation.">IMOC_TEST_TAG_RECV</a>(tag)
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<a name="l00040"></a>00040 <a class="code" href="../../d3/d32/group__internal__tm.html#g7e5044180aa40d4a5a41108f88559871" title="Tests if invalid communicator in a recv-operation.">IMOC_TEST_COMM_RECV</a>(comm)
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<a name="l00041"></a>00041
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<a name="l00042"></a>00042 <span class="comment">/*looking for data to receive*/</span>
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<a name="l00043"></a>00043 sourceQueueEntry = NULL;
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<a name="l00044"></a>00044 <span class="keywordflow">while</span> (sourceQueueEntry == NULL)
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<a name="l00045"></a>00045 {
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<a name="l00046"></a>00046 sourceQueueEntry = <a class="code" href="../../d8/d88/group__internal__p2p__main.html#g8980da77fa506e9a6d503c8c6eba68e2" title="Get the next valid message-envelope from &quot;source&quot; with specified &quot;tag&quot;...">IMOC_get_entry</a>(source, tag, comm, 0, status);
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<a name="l00047"></a>00047 }
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<a name="l00048"></a>00048 <span class="comment">/*set status MOC_TAG and mid*/</span>
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<a name="l00049"></a>00049 status-><a class="code" href="../../dd/d7a/structMOC__Status__struct.html#ae670a7f91ed4d4326bfda4f17ee14f0" title="message-tag">MOC_TAG</a> = tag;
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<a name="l00050"></a>00050 status-><a class="code" href="../../dd/d7a/structMOC__Status__struct.html#c84605b34d90e4fde486028fa8b00853" title="message-ID (internal-variable)">mid</a> = sourceQueueEntry-><a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#8e4a31624fc7e1d66e972d570ba0207c" title="Message-ID.">id</a>;
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<a name="l00051"></a>00051
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<a name="l00052"></a>00052 <span class="comment">/*check if datatype from send and recv is the same*/</span>
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<a name="l00053"></a>00053 <span class="keywordflow">if</span> (sourceQueueEntry-><a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#d378e074ce754a4db919128cede7dae3" title="Data-type of message-entries.">datatype</a> != datatype && sourceQueueEntry-><a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#d378e074ce754a4db919128cede7dae3" title="Data-type of message-entries.">datatype</a>
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<a name="l00054"></a>00054 !=<a class="code" href="../../dc/d6e/group__p2p__datatype.html#g6462a2cd9ec6c0cb9445760ac396ec72" title="MOC_Byte is a special datatype.">MOC_BYTE</a> && datatype != <a class="code" href="../../dc/d6e/group__p2p__datatype.html#g6462a2cd9ec6c0cb9445760ac396ec72" title="MOC_Byte is a special datatype.">MOC_BYTE</a>)
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<a name="l00055"></a>00055 {
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<a name="l00056"></a>00056 status-><a class="code" href="../../dd/d7a/structMOC__Status__struct.html#3d3497f7a93c00e6800da9500e52daf2" title="error-code">MOC_ERROR</a> = <a class="code" href="../../d8/da1/group__environment__error.html#ge1052e542cdd8d265d99d2950936ba8e" title="Invalid datatype argument.">MOC_ERR_TYPE</a>;
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<a name="l00057"></a>00057 <span class="keywordflow">return</span> <a class="code" href="../../d8/da1/group__environment__error.html#ge1052e542cdd8d265d99d2950936ba8e" title="Invalid datatype argument.">MOC_ERR_TYPE</a>;
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<a name="l00058"></a>00058 }
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<a name="l00059"></a>00059
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<a name="l00060"></a>00060 <span class="comment">/*check if the data is in the envelope or if data has to be loaded with dma*/</span>
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<a name="l00061"></a>00061 <span class="keywordflow">if</span> (sourceQueueEntry-><a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#38288113f9b7adee1e444850112ff807" title="flag-union">flags</a>.<a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#5538e79854840d3caf08b90b5409e16b" title="flag-struct">bits</a>.channel == <a class="code" href="../../dd/df8/group__internal__core.html#g1a3153033a1eaac0ddff04deac271947" title="Constant for moc_message_envelope_t.flags.channel.">IMOC_MESSAGE_CHANNEL_ENV</a>)
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<a name="l00062"></a>00062 {
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<a name="l00063"></a>00063 <span class="comment">/*get data from envelope*/</span>
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<a name="l00064"></a>00064 memcpy(buf, &sourceQueueEntry-><a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#1e4384284a652a24abc1cf65fc47d665" title="Effective address of message-data.">message_address</a>, (bytecount
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<a name="l00065"></a>00065 < sourceQueueEntry-><a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#33c0974607df68bb2dcb47c8cad3a909" title="Message-size in byte.">size</a>) ? bytecount : sourceQueueEntry-><a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#33c0974607df68bb2dcb47c8cad3a909" title="Message-size in byte.">size</a>);
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<a name="l00066"></a>00066 }
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<a name="l00067"></a>00067 <span class="keywordflow">else</span>
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<a name="l00068"></a>00068 <span class="keywordflow">if</span> (sourceQueueEntry-><a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#38288113f9b7adee1e444850112ff807" title="flag-union">flags</a>.<a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#5538e79854840d3caf08b90b5409e16b" title="flag-struct">bits</a>.channel == <a class="code" href="../../dd/df8/group__internal__core.html#gda23ff5baabe186f8c37c0424598c7bc" title="Constant for moc_message_envelope_t.flags.channel.">IMOC_MESSAGE_CHANNEL_DMA</a>)
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<a name="l00069"></a>00069 {
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<a name="l00070"></a>00070 <span class="keywordflow">if</span> (bytecount != 0)
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<a name="l00071"></a>00071 {
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<a name="l00072"></a>00072 <a class="code" href="../../d3/d32/group__internal__tm.html#gc89a1f53869fe90c838a714621e20d88" title="Tests if address is 16-byte aligned.">IMOC_TEST_ALIGNMENT</a>(buf)
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<a name="l00073"></a>00073 }
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<a name="l00074"></a>00074 <span class="comment">/*get data with dma*/</span>
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<a name="l00075"></a>00075 err = <a class="code" href="../../d2/de2/group__internal__p2p__dma.html#g53d36c567e4c98e5d258a7857096e7ab" title="Internal wrapper-function for a blocking DMA-get operation.">IMOC_get_data</a>(buf, sourceQueueEntry-><a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#1e4384284a652a24abc1cf65fc47d665" title="Effective address of message-data.">message_address</a>,
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<a name="l00076"></a>00076 bytecount);
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<a name="l00077"></a>00077 <span class="keywordflow">if</span> (err)
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<a name="l00078"></a>00078 {
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<a name="l00079"></a>00079 <span class="keywordflow">return</span> err;
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<a name="l00080"></a>00080 }
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<a name="l00081"></a>00081 }
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<a name="l00082"></a>00082 <span class="keywordflow">else</span>
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<a name="l00083"></a>00083 {
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<a name="l00084"></a>00084 <span class="comment">/*an error occourred*/</span>
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<a name="l00085"></a>00085 status-><a class="code" href="../../dd/d7a/structMOC__Status__struct.html#3d3497f7a93c00e6800da9500e52daf2" title="error-code">MOC_ERROR</a> = <a class="code" href="../../d8/da1/group__environment__error.html#g05b3a70831c823a59014c4853a76ca7e" title="Internal MOC (implementation) error.">MOC_ERR_INTERN</a>;
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<a name="l00086"></a>00086 <span class="keywordflow">return</span> <a class="code" href="../../d8/da1/group__environment__error.html#g05b3a70831c823a59014c4853a76ca7e" title="Internal MOC (implementation) error.">MOC_ERR_INTERN</a>;
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<a name="l00087"></a>00087 }
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<a name="l00088"></a>00088
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<a name="l00089"></a>00089 <span class="comment">/* look if send needs answer */</span>
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<a name="l00090"></a>00090 <span class="keywordflow">if</span> (sourceQueueEntry-><a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#38288113f9b7adee1e444850112ff807" title="flag-union">flags</a>.<a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#5538e79854840d3caf08b90b5409e16b" title="flag-struct">bits</a>.signal_back == 1)
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<a name="l00091"></a>00091 {
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<a name="l00092"></a>00092 <span class="comment">/*set message status */</span>
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<a name="l00093"></a>00093 sourceMessageStatus.buffer_offset = 0;
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<a name="l00094"></a>00094 sourceMessageStatus.flags.value = 0;
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<a name="l00095"></a>00095 <span class="keywordflow">if</span> (sourceQueueEntry-><a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#38288113f9b7adee1e444850112ff807" title="flag-union">flags</a>.<a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#5538e79854840d3caf08b90b5409e16b" title="flag-struct">bits</a>.keep_valid)
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<a name="l00096"></a>00096 sourceMessageStatus.flags.bits.valid = 1;
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<a name="l00097"></a>00097
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<a name="l00098"></a>00098 <span class="comment">/*send back message_status*/</span>
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<a name="l00099"></a>00099 <span class="keywordflow">if</span> ((tag_id = mfc_tag_reserve()) == MFC_TAG_INVALID)
|
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<a name="l00100"></a>00100 <span class="keywordflow">return</span> <a class="code" href="../../d8/da1/group__environment__error.html#g05b3a70831c823a59014c4853a76ca7e" title="Internal MOC (implementation) error.">MOC_ERR_INTERN</a>;
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<a name="l00101"></a>00101 mfc_put(
|
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<a name="l00102"></a>00102 &sourceMessageStatus,
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<a name="l00103"></a>00103 <a class="code" href="../../df/ddf/group__internal__am.html#g55e4226e422d3dbf1a1ee6a871c09da7" title="Effective Address of remote status-array entry at node &#39;rank&#39;.">IMOC_EA_REMOTE_STATUS_ENTRY</a>(sourceQueueEntry-><a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#8e4a31624fc7e1d66e972d570ba0207c" title="Message-ID.">id</a>,status-><a class="code" href="../../dd/d7a/structMOC__Status__struct.html#1a3fde58aca11d3b901c890916371661" title="message-source">MOC_SOURCE</a>),
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<a name="l00104"></a>00104 <span class="keyword">sizeof</span>(<a class="code" href="../../dd/df5/structmoc__message__status__struct.html" title="Message-status structure.">moc_message_status_t</a>), tag_id, 0, 0);
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<a name="l00105"></a>00105 mfc_write_tag_mask(1 << tag_id);
|
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<a name="l00106"></a>00106 mfc_read_tag_status_all();
|
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<a name="l00107"></a>00107 mfc_tag_release(tag_id);
|
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<a name="l00108"></a>00108
|
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<a name="l00109"></a>00109 }
|
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<a name="l00110"></a>00110 sourceQueueEntry-><a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#38288113f9b7adee1e444850112ff807" title="flag-union">flags</a>.<a class="code" href="../../df/dd4/structmoc__message__envelope__struct.html#e51379150ad496c8844a4b9b0096120b" title="union-value">value</a> = 0;
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<a name="l00111"></a>00111
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<a name="l00112"></a>00112 status-><a class="code" href="../../dd/d7a/structMOC__Status__struct.html#3d3497f7a93c00e6800da9500e52daf2" title="error-code">MOC_ERROR</a> = 0;
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<a name="l00113"></a>00113 <span class="keywordflow">return</span> 0;
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<a name="l00114"></a>00114 }
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</pre></div></div>
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<hr size="1"><address style="text-align: right;"><small>Generated on Thu Feb 12 13:49:47 2009 for MPI On Cell (Documentation) by
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<a href="http://www.doxygen.org/index.html">
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<img src="../../doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
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</body>
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</html>
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