snapraid/cov/cmdline/io.c.gcov.html
Andrea Mazzoleni a53ac4a175 Auto update
2026-03-15 18:52:43 +01:00

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<td width="35%" class="headerValue"><a href="../index.html">top level</a> - <a href="index.html">cmdline</a> - io.c<span style="font-size: 80%;"> (source / <a href="io.c.func-sort-c.html">functions</a>)</span></td>
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<td width="10%" class="headerCovTableHead">Hit</td>
<td width="10%" class="headerCovTableHead">Total</td>
<td width="15%" class="headerCovTableHead">Coverage</td>
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<td class="headerItem">Test:</td>
<td class="headerValue">lcov.info</td>
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<td class="headerItem">Lines:</td>
<td class="headerCovTableEntry">413</td>
<td class="headerCovTableEntry">443</td>
<td class="headerCovTableEntryHi">93.2 %</td>
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<td class="headerItem">Date:</td>
<td class="headerValue">2026-03-15 15:58:19</td>
<td></td>
<td class="headerItem">Functions:</td>
<td class="headerCovTableEntry">30</td>
<td class="headerCovTableEntry">33</td>
<td class="headerCovTableEntryHi">90.9 %</td>
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<pre class="sourceHeading"> Line data Source code</pre>
<pre class="source">
<a name="1"><span class="lineNum"> 1 </span> : /*</a>
<a name="2"><span class="lineNum"> 2 </span> : * Copyright (C) 2016 Andrea Mazzoleni</a>
<a name="3"><span class="lineNum"> 3 </span> : *</a>
<a name="4"><span class="lineNum"> 4 </span> : * This program is free software: you can redistribute it and/or modify</a>
<a name="5"><span class="lineNum"> 5 </span> : * it under the terms of the GNU General Public License as published by</a>
<a name="6"><span class="lineNum"> 6 </span> : * the Free Software Foundation, either version 3 of the License, or</a>
<a name="7"><span class="lineNum"> 7 </span> : * (at your option) any later version.</a>
<a name="8"><span class="lineNum"> 8 </span> : *</a>
<a name="9"><span class="lineNum"> 9 </span> : * This program is distributed in the hope that it will be useful,</a>
<a name="10"><span class="lineNum"> 10 </span> : * but WITHOUT ANY WARRANTY; without even the implied warranty of</a>
<a name="11"><span class="lineNum"> 11 </span> : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</a>
<a name="12"><span class="lineNum"> 12 </span> : * GNU General Public License for more details.</a>
<a name="13"><span class="lineNum"> 13 </span> : *</a>
<a name="14"><span class="lineNum"> 14 </span> : * You should have received a copy of the GNU General Public License</a>
<a name="15"><span class="lineNum"> 15 </span> : * along with this program. If not, see &lt;http://www.gnu.org/licenses/&gt;.</a>
<a name="16"><span class="lineNum"> 16 </span> : */</a>
<a name="17"><span class="lineNum"> 17 </span> : </a>
<a name="18"><span class="lineNum"> 18 </span> : #include &quot;portable.h&quot;</a>
<a name="19"><span class="lineNum"> 19 </span> : </a>
<a name="20"><span class="lineNum"> 20 </span> : #include &quot;io.h&quot;</a>
<a name="21"><span class="lineNum"> 21 </span> : </a>
<a name="22"><span class="lineNum"> 22 </span> : void (*io_start)(struct snapraid_io* io,</a>
<a name="23"><span class="lineNum"> 23 </span> : block_off_t blockstart, block_off_t blockmax,</a>
<a name="24"><span class="lineNum"> 24 </span> : bit_vect_t* block_enabled) = 0;</a>
<a name="25"><span class="lineNum"> 25 </span> : void (*io_stop)(struct snapraid_io* io) = 0;</a>
<a name="26"><span class="lineNum"> 26 </span> : block_off_t (*io_read_next)(struct snapraid_io* io, void*** buffer) = 0;</a>
<a name="27"><span class="lineNum"> 27 </span> : struct snapraid_task* (*io_data_read)(struct snapraid_io* io, unsigned* diskcur, unsigned* waiting_map, unsigned* waiting_mac) = 0;</a>
<a name="28"><span class="lineNum"> 28 </span> : struct snapraid_task* (*io_parity_read)(struct snapraid_io* io, unsigned* levcur, unsigned* waiting_map, unsigned* waiting_mac) = 0;</a>
<a name="29"><span class="lineNum"> 29 </span> : void (*io_parity_write)(struct snapraid_io* io, unsigned* levcur, unsigned* waiting_map, unsigned* waiting_mac) = 0;</a>
<a name="30"><span class="lineNum"> 30 </span> : void (*io_write_preset)(struct snapraid_io* io, block_off_t blockcur, int skip) = 0;</a>
<a name="31"><span class="lineNum"> 31 </span> : void (*io_write_next)(struct snapraid_io* io, block_off_t blockcur, int skip, int* writer_error) = 0;</a>
<a name="32"><span class="lineNum"> 32 </span> : void (*io_refresh)(struct snapraid_io* io) = 0;</a>
<a name="33"><span class="lineNum"> 33 </span> : void (*io_flush)(struct snapraid_io* io) = 0;</a>
<a name="34"><span class="lineNum"> 34 </span> : </a>
<a name="35"><span class="lineNum"> 35 </span> : /**</a>
<a name="36"><span class="lineNum"> 36 </span> : * Get the next block position to process.</a>
<a name="37"><span class="lineNum"> 37 </span> : */</a>
<a name="38"><span class="lineNum"> 38 </span><span class="lineCov"> 174700 : static block_off_t io_position_next(struct snapraid_io* io)</span></a>
<a name="39"><span class="lineNum"> 39 </span> : {</a>
<a name="40"><span class="lineNum"> 40 </span> : block_off_t blockcur;</a>
<a name="41"><span class="lineNum"> 41 </span> : </a>
<a name="42"><span class="lineNum"> 42 </span> : /* get the next position */</a>
<a name="43"><span class="lineNum"> 43 </span><span class="lineCov"> 174700 : if (io-&gt;block_enabled) {</span></a>
<a name="44"><span class="lineNum"> 44 </span><span class="lineCov"> 532189 : while (io-&gt;block_next &lt; io-&gt;block_max &amp;&amp; !bit_vect_test(io-&gt;block_enabled, io-&gt;block_next))</span></a>
<a name="45"><span class="lineNum"> 45 </span><span class="lineCov"> 367390 : ++io-&gt;block_next;</span></a>
<a name="46"><span class="lineNum"> 46 </span> : }</a>
<a name="47"><span class="lineNum"> 47 </span> : </a>
<a name="48"><span class="lineNum"> 48 </span><span class="lineCov"> 174700 : blockcur = io-&gt;block_next;</span></a>
<a name="49"><span class="lineNum"> 49 </span> : </a>
<a name="50"><span class="lineNum"> 50 </span> : /* next block for the next call */</a>
<a name="51"><span class="lineNum"> 51 </span><span class="lineCov"> 174700 : ++io-&gt;block_next;</span></a>
<a name="52"><span class="lineNum"> 52 </span> : </a>
<a name="53"><span class="lineNum"> 53 </span><span class="lineCov"> 174700 : return blockcur;</span></a>
<a name="54"><span class="lineNum"> 54 </span> : }</a>
<a name="55"><span class="lineNum"> 55 </span> : </a>
<a name="56"><span class="lineNum"> 56 </span> : /**</a>
<a name="57"><span class="lineNum"> 57 </span> : * Setup the next pending task for all readers.</a>
<a name="58"><span class="lineNum"> 58 </span> : */</a>
<a name="59"><span class="lineNum"> 59 </span><span class="lineCov"> 174700 : static void io_reader_sched(struct snapraid_io* io, int task_index, block_off_t blockcur)</span></a>
<a name="60"><span class="lineNum"> 60 </span> : {</a>
<a name="61"><span class="lineNum"> 61 </span> : unsigned i;</a>
<a name="62"><span class="lineNum"> 62 </span> : </a>
<a name="63"><span class="lineNum"> 63 </span><span class="lineCov"> 1445536 : for (i = 0; i &lt; io-&gt;reader_max; ++i) {</span></a>
<a name="64"><span class="lineNum"> 64 </span><span class="lineCov"> 1270836 : struct snapraid_worker* worker = &amp;io-&gt;reader_map[i];</span></a>
<a name="65"><span class="lineNum"> 65 </span><span class="lineCov"> 1270836 : struct snapraid_task* task = &amp;worker-&gt;task_map[task_index];</span></a>
<a name="66"><span class="lineNum"> 66 </span> : </a>
<a name="67"><span class="lineNum"> 67 </span> : /* setup the new pending task */</a>
<a name="68"><span class="lineNum"> 68 </span><span class="lineCov"> 1270836 : if (blockcur &lt; io-&gt;block_max)</span></a>
<a name="69"><span class="lineNum"> 69 </span><span class="lineCov"> 1180200 : task-&gt;state = TASK_STATE_READY;</span></a>
<a name="70"><span class="lineNum"> 70 </span> : else</a>
<a name="71"><span class="lineNum"> 71 </span><span class="lineCov"> 90636 : task-&gt;state = TASK_STATE_EMPTY;</span></a>
<a name="72"><span class="lineNum"> 72 </span> : </a>
<a name="73"><span class="lineNum"> 73 </span><span class="lineCov"> 1270836 : task-&gt;path[0] = 0;</span></a>
<a name="74"><span class="lineNum"> 74 </span><span class="lineCov"> 1270836 : if (worker-&gt;handle)</span></a>
<a name="75"><span class="lineNum"> 75 </span><span class="lineCov"> 1048200 : task-&gt;disk = worker-&gt;handle-&gt;disk;</span></a>
<a name="76"><span class="lineNum"> 76 </span> : else</a>
<a name="77"><span class="lineNum"> 77 </span><span class="lineCov"> 222636 : task-&gt;disk = 0;</span></a>
<a name="78"><span class="lineNum"> 78 </span> : </a>
<a name="79"><span class="lineNum"> 79 </span><span class="lineCov"> 1270836 : assert(worker-&gt;buffer_skew + i &lt; io-&gt;buffer_max);</span></a>
<a name="80"><span class="lineNum"> 80 </span> : </a>
<a name="81"><span class="lineNum"> 81 </span><span class="lineCov"> 1270836 : task-&gt;buffer = io-&gt;buffer_map[task_index][worker-&gt;buffer_skew + i];</span></a>
<a name="82"><span class="lineNum"> 82 </span><span class="lineCov"> 1270836 : task-&gt;position = blockcur;</span></a>
<a name="83"><span class="lineNum"> 83 </span><span class="lineCov"> 1270836 : task-&gt;block = 0;</span></a>
<a name="84"><span class="lineNum"> 84 </span><span class="lineCov"> 1270836 : task-&gt;file = 0;</span></a>
<a name="85"><span class="lineNum"> 85 </span><span class="lineCov"> 1270836 : task-&gt;file_pos = 0;</span></a>
<a name="86"><span class="lineNum"> 86 </span><span class="lineCov"> 1270836 : task-&gt;read_size = 0;</span></a>
<a name="87"><span class="lineNum"> 87 </span><span class="lineCov"> 1270836 : task-&gt;is_timestamp_different = 0;</span></a>
<a name="88"><span class="lineNum"> 88 </span> : }</a>
<a name="89"><span class="lineNum"> 89 </span><span class="lineCov"> 174700 : }</span></a>
<a name="90"><span class="lineNum"> 90 </span> : </a>
<a name="91"><span class="lineNum"> 91 </span> : /**</a>
<a name="92"><span class="lineNum"> 92 </span> : * Setup the next pending task for all writers.</a>
<a name="93"><span class="lineNum"> 93 </span> : */</a>
<a name="94"><span class="lineNum"> 94 </span><span class="lineCov"> 125127 : static void io_writer_sched(struct snapraid_io* io, int task_index, block_off_t blockcur)</span></a>
<a name="95"><span class="lineNum"> 95 </span> : {</a>
<a name="96"><span class="lineNum"> 96 </span> : unsigned i;</a>
<a name="97"><span class="lineNum"> 97 </span> : </a>
<a name="98"><span class="lineNum"> 98 </span><span class="lineCov"> 698709 : for (i = 0; i &lt; io-&gt;writer_max; ++i) {</span></a>
<a name="99"><span class="lineNum"> 99 </span><span class="lineCov"> 573582 : struct snapraid_worker* worker = &amp;io-&gt;writer_map[i];</span></a>
<a name="100"><span class="lineNum"> 100 </span><span class="lineCov"> 573582 : struct snapraid_task* task = &amp;worker-&gt;task_map[task_index];</span></a>
<a name="101"><span class="lineNum"> 101 </span> : </a>
<a name="102"><span class="lineNum"> 102 </span> : /* setup the new pending task */</a>
<a name="103"><span class="lineNum"> 103 </span><span class="lineCov"> 573582 : task-&gt;state = TASK_STATE_READY;</span></a>
<a name="104"><span class="lineNum"> 104 </span><span class="lineCov"> 573582 : task-&gt;path[0] = 0;</span></a>
<a name="105"><span class="lineNum"> 105 </span><span class="lineCov"> 573582 : task-&gt;disk = 0;</span></a>
<a name="106"><span class="lineNum"> 106 </span><span class="lineCov"> 573582 : task-&gt;buffer = io-&gt;buffer_map[task_index][worker-&gt;buffer_skew + i];</span></a>
<a name="107"><span class="lineNum"> 107 </span><span class="lineCov"> 573582 : task-&gt;position = blockcur;</span></a>
<a name="108"><span class="lineNum"> 108 </span><span class="lineCov"> 573582 : task-&gt;block = 0;</span></a>
<a name="109"><span class="lineNum"> 109 </span><span class="lineCov"> 573582 : task-&gt;file = 0;</span></a>
<a name="110"><span class="lineNum"> 110 </span><span class="lineCov"> 573582 : task-&gt;file_pos = 0;</span></a>
<a name="111"><span class="lineNum"> 111 </span><span class="lineCov"> 573582 : task-&gt;read_size = 0;</span></a>
<a name="112"><span class="lineNum"> 112 </span><span class="lineCov"> 573582 : task-&gt;is_timestamp_different = 0;</span></a>
<a name="113"><span class="lineNum"> 113 </span> : }</a>
<a name="114"><span class="lineNum"> 114 </span><span class="lineCov"> 125127 : }</span></a>
<a name="115"><span class="lineNum"> 115 </span> : </a>
<a name="116"><span class="lineNum"> 116 </span> : /**</a>
<a name="117"><span class="lineNum"> 117 </span> : * Setup an empty next pending task for all writers.</a>
<a name="118"><span class="lineNum"> 118 </span> : */</a>
<a name="119"><span class="lineNum"> 119 </span><span class="lineCov"> 945 : static void io_writer_sched_empty(struct snapraid_io* io, int task_index, block_off_t blockcur)</span></a>
<a name="120"><span class="lineNum"> 120 </span> : {</a>
<a name="121"><span class="lineNum"> 121 </span> : unsigned i;</a>
<a name="122"><span class="lineNum"> 122 </span> : </a>
<a name="123"><span class="lineNum"> 123 </span><span class="lineCov"> 6615 : for (i = 0; i &lt; io-&gt;writer_max; ++i) {</span></a>
<a name="124"><span class="lineNum"> 124 </span><span class="lineCov"> 5670 : struct snapraid_worker* worker = &amp;io-&gt;writer_map[i];</span></a>
<a name="125"><span class="lineNum"> 125 </span><span class="lineCov"> 5670 : struct snapraid_task* task = &amp;worker-&gt;task_map[task_index];</span></a>
<a name="126"><span class="lineNum"> 126 </span> : </a>
<a name="127"><span class="lineNum"> 127 </span> : /* setup the new pending task */</a>
<a name="128"><span class="lineNum"> 128 </span><span class="lineCov"> 5670 : task-&gt;state = TASK_STATE_EMPTY;</span></a>
<a name="129"><span class="lineNum"> 129 </span><span class="lineCov"> 5670 : task-&gt;path[0] = 0;</span></a>
<a name="130"><span class="lineNum"> 130 </span><span class="lineCov"> 5670 : task-&gt;disk = 0;</span></a>
<a name="131"><span class="lineNum"> 131 </span><span class="lineCov"> 5670 : task-&gt;buffer = 0;</span></a>
<a name="132"><span class="lineNum"> 132 </span><span class="lineCov"> 5670 : task-&gt;position = blockcur;</span></a>
<a name="133"><span class="lineNum"> 133 </span><span class="lineCov"> 5670 : task-&gt;block = 0;</span></a>
<a name="134"><span class="lineNum"> 134 </span><span class="lineCov"> 5670 : task-&gt;file = 0;</span></a>
<a name="135"><span class="lineNum"> 135 </span><span class="lineCov"> 5670 : task-&gt;file_pos = 0;</span></a>
<a name="136"><span class="lineNum"> 136 </span><span class="lineCov"> 5670 : task-&gt;read_size = 0;</span></a>
<a name="137"><span class="lineNum"> 137 </span><span class="lineCov"> 5670 : task-&gt;is_timestamp_different = 0;</span></a>
<a name="138"><span class="lineNum"> 138 </span> : }</a>
<a name="139"><span class="lineNum"> 139 </span><span class="lineCov"> 945 : }</span></a>
<a name="140"><span class="lineNum"> 140 </span> : </a>
<a name="141"><span class="lineNum"> 141 </span> : /*****************************************************************************/</a>
<a name="142"><span class="lineNum"> 142 </span> : /* mono thread */</a>
<a name="143"><span class="lineNum"> 143 </span> : </a>
<a name="144"><span class="lineNum"> 144 </span><span class="lineCov"> 9376 : static block_off_t io_read_next_mono(struct snapraid_io* io, void*** buffer)</span></a>
<a name="145"><span class="lineNum"> 145 </span> : {</a>
<a name="146"><span class="lineNum"> 146 </span> : block_off_t blockcur_schedule;</a>
<a name="147"><span class="lineNum"> 147 </span> : </a>
<a name="148"><span class="lineNum"> 148 </span> : /* reset the index */</a>
<a name="149"><span class="lineNum"> 149 </span><span class="lineCov"> 9376 : io-&gt;reader_index = 0;</span></a>
<a name="150"><span class="lineNum"> 150 </span> : </a>
<a name="151"><span class="lineNum"> 151 </span><span class="lineCov"> 9376 : blockcur_schedule = io_position_next(io);</span></a>
<a name="152"><span class="lineNum"> 152 </span> : </a>
<a name="153"><span class="lineNum"> 153 </span> : /* schedule the next read */</a>
<a name="154"><span class="lineNum"> 154 </span><span class="lineCov"> 9376 : io_reader_sched(io, 0, blockcur_schedule);</span></a>
<a name="155"><span class="lineNum"> 155 </span> : </a>
<a name="156"><span class="lineNum"> 156 </span> : /* set the buffer to use */</a>
<a name="157"><span class="lineNum"> 157 </span><span class="lineCov"> 9376 : *buffer = io-&gt;buffer_map[0];</span></a>
<a name="158"><span class="lineNum"> 158 </span> : </a>
<a name="159"><span class="lineNum"> 159 </span><span class="lineCov"> 9376 : return blockcur_schedule;</span></a>
<a name="160"><span class="lineNum"> 160 </span> : }</a>
<a name="161"><span class="lineNum"> 161 </span> : </a>
<a name="162"><span class="lineNum"> 162 </span><span class="lineCov"> 9374 : static void io_write_preset_mono(struct snapraid_io* io, block_off_t blockcur, int skip)</span></a>
<a name="163"><span class="lineNum"> 163 </span> : {</a>
<a name="164"><span class="lineNum"> 164 </span> : unsigned i;</a>
<a name="165"><span class="lineNum"> 165 </span> : </a>
<a name="166"><span class="lineNum"> 166 </span> : /* reset the index */</a>
<a name="167"><span class="lineNum"> 167 </span><span class="lineCov"> 9374 : io-&gt;writer_index = 0;</span></a>
<a name="168"><span class="lineNum"> 168 </span> : </a>
<a name="169"><span class="lineNum"> 169 </span> : /* clear errors */</a>
<a name="170"><span class="lineNum"> 170 </span><span class="lineCov"> 46870 : for (i = 0; i &lt; IO_WRITER_ERROR_MAX; ++i)</span></a>
<a name="171"><span class="lineNum"> 171 </span><span class="lineCov"> 37496 : io-&gt;writer_error[i] = 0;</span></a>
<a name="172"><span class="lineNum"> 172 </span> : </a>
<a name="173"><span class="lineNum"> 173 </span><span class="lineCov"> 9374 : if (skip) {</span></a>
<a name="174"><span class="lineNum"> 174 </span> : /* skip the next write */</a>
<a name="175"><span class="lineNum"> 175 </span><span class="lineNoCov"> 0 : io_writer_sched_empty(io, 0, blockcur);</span></a>
<a name="176"><span class="lineNum"> 176 </span> : } else {</a>
<a name="177"><span class="lineNum"> 177 </span> : /* schedule the next write */</a>
<a name="178"><span class="lineNum"> 178 </span><span class="lineCov"> 9374 : io_writer_sched(io, 0, blockcur);</span></a>
<a name="179"><span class="lineNum"> 179 </span> : }</a>
<a name="180"><span class="lineNum"> 180 </span><span class="lineCov"> 9374 : }</span></a>
<a name="181"><span class="lineNum"> 181 </span> : </a>
<a name="182"><span class="lineNum"> 182 </span><span class="lineCov"> 9374 : static void io_write_next_mono(struct snapraid_io* io, block_off_t blockcur, int skip, int* writer_error)</span></a>
<a name="183"><span class="lineNum"> 183 </span> : {</a>
<a name="184"><span class="lineNum"> 184 </span> : unsigned i;</a>
<a name="185"><span class="lineNum"> 185 </span> : </a>
<a name="186"><span class="lineNum"> 186 </span> : (void)blockcur;</a>
<a name="187"><span class="lineNum"> 187 </span> : (void)skip;</a>
<a name="188"><span class="lineNum"> 188 </span> : </a>
<a name="189"><span class="lineNum"> 189 </span> : /* report errors */</a>
<a name="190"><span class="lineNum"> 190 </span><span class="lineCov"> 46870 : for (i = 0; i &lt; IO_WRITER_ERROR_MAX; ++i)</span></a>
<a name="191"><span class="lineNum"> 191 </span><span class="lineCov"> 37496 : writer_error[i] = io-&gt;writer_error[i];</span></a>
<a name="192"><span class="lineNum"> 192 </span><span class="lineCov"> 9374 : }</span></a>
<a name="193"><span class="lineNum"> 193 </span> : </a>
<a name="194"><span class="lineNum"> 194 </span><span class="lineNoCov"> 0 : static void io_refresh_mono(struct snapraid_io* io)</span></a>
<a name="195"><span class="lineNum"> 195 </span> : {</a>
<a name="196"><span class="lineNum"> 196 </span> : (void)io;</a>
<a name="197"><span class="lineNum"> 197 </span><span class="lineNoCov"> 0 : }</span></a>
<a name="198"><span class="lineNum"> 198 </span> : </a>
<a name="199"><span class="lineNum"> 199 </span><span class="lineCov"> 2 : static void io_flush_mono(struct snapraid_io* io)</span></a>
<a name="200"><span class="lineNum"> 200 </span> : {</a>
<a name="201"><span class="lineNum"> 201 </span> : (void)io;</a>
<a name="202"><span class="lineNum"> 202 </span><span class="lineCov"> 2 : }</span></a>
<a name="203"><span class="lineNum"> 203 </span> : </a>
<a name="204"><span class="lineNum"> 204 </span><span class="lineCov"> 56244 : static struct snapraid_task* io_task_read_mono(struct snapraid_io* io, unsigned base, unsigned count, unsigned* pos, unsigned* waiting_map, unsigned* waiting_mac)</span></a>
<a name="205"><span class="lineNum"> 205 </span> : {</a>
<a name="206"><span class="lineNum"> 206 </span> : struct snapraid_worker* worker;</a>
<a name="207"><span class="lineNum"> 207 </span> : struct snapraid_task* task;</a>
<a name="208"><span class="lineNum"> 208 </span> : unsigned i;</a>
<a name="209"><span class="lineNum"> 209 </span> : </a>
<a name="210"><span class="lineNum"> 210 </span> : /* get the next task */</a>
<a name="211"><span class="lineNum"> 211 </span><span class="lineCov"> 56244 : i = io-&gt;reader_index++;</span></a>
<a name="212"><span class="lineNum"> 212 </span> : </a>
<a name="213"><span class="lineNum"> 213 </span><span class="lineCov"> 56244 : assert(base &lt;= i &amp;&amp; i &lt; base + count);</span></a>
<a name="214"><span class="lineNum"> 214 </span> : </a>
<a name="215"><span class="lineNum"> 215 </span><span class="lineCov"> 56244 : worker = &amp;io-&gt;reader_map[i];</span></a>
<a name="216"><span class="lineNum"> 216 </span><span class="lineCov"> 56244 : task = &amp;worker-&gt;task_map[0];</span></a>
<a name="217"><span class="lineNum"> 217 </span> : </a>
<a name="218"><span class="lineNum"> 218 </span> : /* do the work */</a>
<a name="219"><span class="lineNum"> 219 </span><span class="lineCov"> 56244 : if (task-&gt;state != TASK_STATE_EMPTY)</span></a>
<a name="220"><span class="lineNum"> 220 </span><span class="lineCov"> 56244 : worker-&gt;func(worker, task);</span></a>
<a name="221"><span class="lineNum"> 221 </span> : </a>
<a name="222"><span class="lineNum"> 222 </span> : /* return the position */</a>
<a name="223"><span class="lineNum"> 223 </span><span class="lineCov"> 56244 : *pos = i - base;</span></a>
<a name="224"><span class="lineNum"> 224 </span> : </a>
<a name="225"><span class="lineNum"> 225 </span> : /* store the waiting index */</a>
<a name="226"><span class="lineNum"> 226 </span><span class="lineCov"> 56244 : waiting_map[0] = i - base;</span></a>
<a name="227"><span class="lineNum"> 227 </span><span class="lineCov"> 56244 : *waiting_mac = 1;</span></a>
<a name="228"><span class="lineNum"> 228 </span> : </a>
<a name="229"><span class="lineNum"> 229 </span><span class="lineCov"> 56244 : return task;</span></a>
<a name="230"><span class="lineNum"> 230 </span> : }</a>
<a name="231"><span class="lineNum"> 231 </span> : </a>
<a name="232"><span class="lineNum"> 232 </span><span class="lineCov"> 56244 : static struct snapraid_task* io_data_read_mono(struct snapraid_io* io, unsigned* pos, unsigned* waiting_map, unsigned* waiting_mac)</span></a>
<a name="233"><span class="lineNum"> 233 </span> : {</a>
<a name="234"><span class="lineNum"> 234 </span><span class="lineCov"> 56244 : return io_task_read_mono(io, io-&gt;data_base, io-&gt;data_count, pos, waiting_map, waiting_mac);</span></a>
<a name="235"><span class="lineNum"> 235 </span> : }</a>
<a name="236"><span class="lineNum"> 236 </span> : </a>
<a name="237"><span class="lineNum"> 237 </span><span class="lineNoCov"> 0 : static struct snapraid_task* io_parity_read_mono(struct snapraid_io* io, unsigned* pos, unsigned* waiting_map, unsigned* waiting_mac)</span></a>
<a name="238"><span class="lineNum"> 238 </span> : {</a>
<a name="239"><span class="lineNum"> 239 </span><span class="lineNoCov"> 0 : return io_task_read_mono(io, io-&gt;parity_base, io-&gt;parity_count, pos, waiting_map, waiting_mac);</span></a>
<a name="240"><span class="lineNum"> 240 </span> : }</a>
<a name="241"><span class="lineNum"> 241 </span> : </a>
<a name="242"><span class="lineNum"> 242 </span><span class="lineCov"> 9374 : static void io_parity_write_mono(struct snapraid_io* io, unsigned* pos, unsigned* waiting_map, unsigned* waiting_mac)</span></a>
<a name="243"><span class="lineNum"> 243 </span> : {</a>
<a name="244"><span class="lineNum"> 244 </span> : struct snapraid_worker* worker;</a>
<a name="245"><span class="lineNum"> 245 </span> : struct snapraid_task* task;</a>
<a name="246"><span class="lineNum"> 246 </span> : unsigned i;</a>
<a name="247"><span class="lineNum"> 247 </span> : </a>
<a name="248"><span class="lineNum"> 248 </span> : /* get the next task */</a>
<a name="249"><span class="lineNum"> 249 </span><span class="lineCov"> 9374 : i = io-&gt;writer_index++;</span></a>
<a name="250"><span class="lineNum"> 250 </span> : </a>
<a name="251"><span class="lineNum"> 251 </span><span class="lineCov"> 9374 : worker = &amp;io-&gt;writer_map[i];</span></a>
<a name="252"><span class="lineNum"> 252 </span><span class="lineCov"> 9374 : task = &amp;worker-&gt;task_map[0];</span></a>
<a name="253"><span class="lineNum"> 253 </span> : </a>
<a name="254"><span class="lineNum"> 254 </span><span class="lineCov"> 9374 : io-&gt;writer_error[i] = 0;</span></a>
<a name="255"><span class="lineNum"> 255 </span> : </a>
<a name="256"><span class="lineNum"> 256 </span> : /* do the work */</a>
<a name="257"><span class="lineNum"> 257 </span><span class="lineCov"> 9374 : if (task-&gt;state != TASK_STATE_EMPTY)</span></a>
<a name="258"><span class="lineNum"> 258 </span><span class="lineCov"> 9374 : worker-&gt;func(worker, task);</span></a>
<a name="259"><span class="lineNum"> 259 </span> : </a>
<a name="260"><span class="lineNum"> 260 </span> : /* return the position */</a>
<a name="261"><span class="lineNum"> 261 </span><span class="lineCov"> 9374 : *pos = i;</span></a>
<a name="262"><span class="lineNum"> 262 </span> : </a>
<a name="263"><span class="lineNum"> 263 </span> : /* store the waiting index */</a>
<a name="264"><span class="lineNum"> 264 </span><span class="lineCov"> 9374 : waiting_map[0] = i;</span></a>
<a name="265"><span class="lineNum"> 265 </span><span class="lineCov"> 9374 : *waiting_mac = 1;</span></a>
<a name="266"><span class="lineNum"> 266 </span><span class="lineCov"> 9374 : }</span></a>
<a name="267"><span class="lineNum"> 267 </span> : </a>
<a name="268"><span class="lineNum"> 268 </span><span class="lineCov"> 2 : static void io_start_mono(struct snapraid_io* io,</span></a>
<a name="269"><span class="lineNum"> 269 </span> : block_off_t blockstart, block_off_t blockmax,</a>
<a name="270"><span class="lineNum"> 270 </span> : bit_vect_t* block_enabled)</a>
<a name="271"><span class="lineNum"> 271 </span> : {</a>
<a name="272"><span class="lineNum"> 272 </span><span class="lineCov"> 2 : io-&gt;block_start = blockstart;</span></a>
<a name="273"><span class="lineNum"> 273 </span><span class="lineCov"> 2 : io-&gt;block_max = blockmax;</span></a>
<a name="274"><span class="lineNum"> 274 </span><span class="lineCov"> 2 : io-&gt;block_enabled = block_enabled;</span></a>
<a name="275"><span class="lineNum"> 275 </span><span class="lineCov"> 2 : io-&gt;block_next = blockstart;</span></a>
<a name="276"><span class="lineNum"> 276 </span><span class="lineCov"> 2 : }</span></a>
<a name="277"><span class="lineNum"> 277 </span> : </a>
<a name="278"><span class="lineNum"> 278 </span><span class="lineCov"> 2 : static void io_stop_mono(struct snapraid_io* io)</span></a>
<a name="279"><span class="lineNum"> 279 </span> : {</a>
<a name="280"><span class="lineNum"> 280 </span> : (void)io;</a>
<a name="281"><span class="lineNum"> 281 </span><span class="lineCov"> 2 : }</span></a>
<a name="282"><span class="lineNum"> 282 </span> : </a>
<a name="283"><span class="lineNum"> 283 </span> : /*****************************************************************************/</a>
<a name="284"><span class="lineNum"> 284 </span> : /* multi thread */</a>
<a name="285"><span class="lineNum"> 285 </span> : </a>
<a name="286"><span class="lineNum"> 286 </span> : /* disable multithread if pthread is not present */</a>
<a name="287"><span class="lineNum"> 287 </span> : #if HAVE_THREAD</a>
<a name="288"><span class="lineNum"> 288 </span> : </a>
<a name="289"><span class="lineNum"> 289 </span> : /**</a>
<a name="290"><span class="lineNum"> 290 </span> : * Get the next task to work on for a reader.</a>
<a name="291"><span class="lineNum"> 291 </span> : *</a>
<a name="292"><span class="lineNum"> 292 </span> : * This is the synchronization point for workers with the io.</a>
<a name="293"><span class="lineNum"> 293 </span> : */</a>
<a name="294"><span class="lineNum"> 294 </span><span class="lineCov"> 1214572 : static struct snapraid_task* io_reader_step(struct snapraid_worker* worker)</span></a>
<a name="295"><span class="lineNum"> 295 </span> : {</a>
<a name="296"><span class="lineNum"> 296 </span><span class="lineCov"> 1214572 : struct snapraid_io* io = worker-&gt;io;</span></a>
<a name="297"><span class="lineNum"> 297 </span> : </a>
<a name="298"><span class="lineNum"> 298 </span> : /* the synchronization is protected by the io mutex */</a>
<a name="299"><span class="lineNum"> 299 </span><span class="lineCov"> 1214572 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span></a>
<a name="300"><span class="lineNum"> 300 </span> : </a>
<a name="301"><span class="lineNum"> 301 </span><span class="lineCov"> 1005874 : while (1) {</span></a>
<a name="302"><span class="lineNum"> 302 </span> : unsigned next_index;</a>
<a name="303"><span class="lineNum"> 303 </span> : </a>
<a name="304"><span class="lineNum"> 304 </span> : /* check if the worker has to exit */</a>
<a name="305"><span class="lineNum"> 305 </span> : /* even if there is work to do */</a>
<a name="306"><span class="lineNum"> 306 </span><span class="lineCov"> 2220446 : if (io-&gt;done) {</span></a>
<a name="307"><span class="lineNum"> 307 </span><span class="lineCov"> 708 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span></a>
<a name="308"><span class="lineNum"> 308 </span><span class="lineCov"> 708 : return 0;</span></a>
<a name="309"><span class="lineNum"> 309 </span> : }</a>
<a name="310"><span class="lineNum"> 310 </span> : </a>
<a name="311"><span class="lineNum"> 311 </span> : /* get the next pending task */</a>
<a name="312"><span class="lineNum"> 312 </span><span class="lineCov"> 2219738 : next_index = (worker-&gt;index + 1) % io-&gt;io_max;</span></a>
<a name="313"><span class="lineNum"> 313 </span> : </a>
<a name="314"><span class="lineNum"> 314 </span> : /* if the queue of pending tasks is not empty */</a>
<a name="315"><span class="lineNum"> 315 </span><span class="lineCov"> 2219738 : if (next_index != io-&gt;reader_index) {</span></a>
<a name="316"><span class="lineNum"> 316 </span> : struct snapraid_task* task;</a>
<a name="317"><span class="lineNum"> 317 </span> : </a>
<a name="318"><span class="lineNum"> 318 </span> : /* the index that the IO may be waiting for */</a>
<a name="319"><span class="lineNum"> 319 </span><span class="lineCov"> 1213864 : unsigned waiting_index = io-&gt;reader_index;</span></a>
<a name="320"><span class="lineNum"> 320 </span> : </a>
<a name="321"><span class="lineNum"> 321 </span> : /* the index that worker just completed */</a>
<a name="322"><span class="lineNum"> 322 </span><span class="lineCov"> 1213864 : unsigned done_index = worker-&gt;index;</span></a>
<a name="323"><span class="lineNum"> 323 </span> : </a>
<a name="324"><span class="lineNum"> 324 </span> : /* get the new working task */</a>
<a name="325"><span class="lineNum"> 325 </span><span class="lineCov"> 1213864 : worker-&gt;index = next_index;</span></a>
<a name="326"><span class="lineNum"> 326 </span><span class="lineCov"> 1213864 : task = &amp;worker-&gt;task_map[worker-&gt;index];</span></a>
<a name="327"><span class="lineNum"> 327 </span> : </a>
<a name="328"><span class="lineNum"> 328 </span> : /* if the just completed task is at this index */</a>
<a name="329"><span class="lineNum"> 329 </span><span class="lineCov"> 1213864 : if (done_index == waiting_index) {</span></a>
<a name="330"><span class="lineNum"> 330 </span> : /* notify the IO that a new read is complete */</a>
<a name="331"><span class="lineNum"> 331 </span><span class="lineCov"> 850 : thread_cond_signal_and_unlock(&amp;io-&gt;read_done, &amp;io-&gt;io_mutex);</span></a>
<a name="332"><span class="lineNum"> 332 </span> : } else {</a>
<a name="333"><span class="lineNum"> 333 </span><span class="lineCov"> 1213014 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span></a>
<a name="334"><span class="lineNum"> 334 </span> : }</a>
<a name="335"><span class="lineNum"> 335 </span> : </a>
<a name="336"><span class="lineNum"> 336 </span> : /* return the new task */</a>
<a name="337"><span class="lineNum"> 337 </span><span class="lineCov"> 1213864 : return task;</span></a>
<a name="338"><span class="lineNum"> 338 </span> : }</a>
<a name="339"><span class="lineNum"> 339 </span> : </a>
<a name="340"><span class="lineNum"> 340 </span> : /* otherwise wait for a read_sched event */</a>
<a name="341"><span class="lineNum"> 341 </span><span class="lineCov"> 1005874 : thread_cond_wait(&amp;io-&gt;read_sched, &amp;io-&gt;io_mutex);</span></a>
<a name="342"><span class="lineNum"> 342 </span> : }</a>
<a name="343"><span class="lineNum"> 343 </span> : }</a>
<a name="344"><span class="lineNum"> 344 </span> : </a>
<a name="345"><span class="lineNum"> 345 </span> : /**</a>
<a name="346"><span class="lineNum"> 346 </span> : * Get the next task to work on for a writer.</a>
<a name="347"><span class="lineNum"> 347 </span> : *</a>
<a name="348"><span class="lineNum"> 348 </span> : * This is the synchronization point for workers with the io.</a>
<a name="349"><span class="lineNum"> 349 </span> : */</a>
<a name="350"><span class="lineNum"> 350 </span><span class="lineCov"> 570383 : static struct snapraid_task* io_writer_step(struct snapraid_worker* worker, int state)</span></a>
<a name="351"><span class="lineNum"> 351 </span> : {</a>
<a name="352"><span class="lineNum"> 352 </span><span class="lineCov"> 570383 : struct snapraid_io* io = worker-&gt;io;</span></a>
<a name="353"><span class="lineNum"> 353 </span> : int error_index;</a>
<a name="354"><span class="lineNum"> 354 </span> : </a>
<a name="355"><span class="lineNum"> 355 </span> : /* the synchronization is protected by the io mutex */</a>
<a name="356"><span class="lineNum"> 356 </span><span class="lineCov"> 570383 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span></a>
<a name="357"><span class="lineNum"> 357 </span> : </a>
<a name="358"><span class="lineNum"> 358 </span> : /* counts the number of errors in the global state */</a>
<a name="359"><span class="lineNum"> 359 </span><span class="lineCov"> 570383 : error_index = state - IO_WRITER_ERROR_BASE;</span></a>
<a name="360"><span class="lineNum"> 360 </span><span class="lineCov"> 570383 : if (error_index &gt;= 0 &amp;&amp; error_index &lt; IO_WRITER_ERROR_MAX)</span></a>
<a name="361"><span class="lineNum"> 361 </span><span class="lineNoCov"> 0 : ++io-&gt;writer_error[error_index];</span></a>
<a name="362"><span class="lineNum"> 362 </span> : </a>
<a name="363"><span class="lineNum"> 363 </span><span class="lineCov"> 548311 : while (1) {</span></a>
<a name="364"><span class="lineNum"> 364 </span> : unsigned next_index;</a>
<a name="365"><span class="lineNum"> 365 </span> : </a>
<a name="366"><span class="lineNum"> 366 </span> : /* get the next pending task */</a>
<a name="367"><span class="lineNum"> 367 </span><span class="lineCov"> 1118694 : next_index = (worker-&gt;index + 1) % io-&gt;io_max;</span></a>
<a name="368"><span class="lineNum"> 368 </span> : </a>
<a name="369"><span class="lineNum"> 369 </span> : /* if the queue of pending tasks is not empty */</a>
<a name="370"><span class="lineNum"> 370 </span><span class="lineCov"> 1118694 : if (next_index != io-&gt;writer_index) {</span></a>
<a name="371"><span class="lineNum"> 371 </span> : struct snapraid_task* task;</a>
<a name="372"><span class="lineNum"> 372 </span> : </a>
<a name="373"><span class="lineNum"> 373 </span> : /* the index that the IO may be waiting for */</a>
<a name="374"><span class="lineNum"> 374 </span><span class="lineCov"> 569878 : unsigned waiting_index = (io-&gt;writer_index + 1) % io-&gt;io_max;</span></a>
<a name="375"><span class="lineNum"> 375 </span> : </a>
<a name="376"><span class="lineNum"> 376 </span> : /* the index that worker just completed */</a>
<a name="377"><span class="lineNum"> 377 </span><span class="lineCov"> 569878 : unsigned done_index = worker-&gt;index;</span></a>
<a name="378"><span class="lineNum"> 378 </span> : </a>
<a name="379"><span class="lineNum"> 379 </span> : /* get the new working task */</a>
<a name="380"><span class="lineNum"> 380 </span><span class="lineCov"> 569878 : worker-&gt;index = next_index;</span></a>
<a name="381"><span class="lineNum"> 381 </span><span class="lineCov"> 569878 : task = &amp;worker-&gt;task_map[worker-&gt;index];</span></a>
<a name="382"><span class="lineNum"> 382 </span> : </a>
<a name="383"><span class="lineNum"> 383 </span> : /* if the just completed task is at this index */</a>
<a name="384"><span class="lineNum"> 384 </span><span class="lineCov"> 569878 : if (done_index == waiting_index) {</span></a>
<a name="385"><span class="lineNum"> 385 </span> : /* notify the IO that a new write is complete */</a>
<a name="386"><span class="lineNum"> 386 </span><span class="lineCov"> 4414 : thread_cond_signal_and_unlock(&amp;io-&gt;write_done, &amp;io-&gt;io_mutex);</span></a>
<a name="387"><span class="lineNum"> 387 </span> : } else {</a>
<a name="388"><span class="lineNum"> 388 </span><span class="lineCov"> 565464 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span></a>
<a name="389"><span class="lineNum"> 389 </span> : }</a>
<a name="390"><span class="lineNum"> 390 </span> : </a>
<a name="391"><span class="lineNum"> 391 </span> : /* return the new task */</a>
<a name="392"><span class="lineNum"> 392 </span><span class="lineCov"> 569878 : return task;</span></a>
<a name="393"><span class="lineNum"> 393 </span> : }</a>
<a name="394"><span class="lineNum"> 394 </span> : </a>
<a name="395"><span class="lineNum"> 395 </span> : /* check if the worker has to exit */</a>
<a name="396"><span class="lineNum"> 396 </span> : /* but only if there is no work to do */</a>
<a name="397"><span class="lineNum"> 397 </span><span class="lineCov"> 548816 : if (io-&gt;done) {</span></a>
<a name="398"><span class="lineNum"> 398 </span><span class="lineCov"> 505 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span></a>
<a name="399"><span class="lineNum"> 399 </span><span class="lineCov"> 505 : return 0;</span></a>
<a name="400"><span class="lineNum"> 400 </span> : }</a>
<a name="401"><span class="lineNum"> 401 </span> : </a>
<a name="402"><span class="lineNum"> 402 </span> : /* otherwise wait for a write_sched event */</a>
<a name="403"><span class="lineNum"> 403 </span><span class="lineCov"> 548311 : thread_cond_wait(&amp;io-&gt;write_sched, &amp;io-&gt;io_mutex);</span></a>
<a name="404"><span class="lineNum"> 404 </span> : }</a>
<a name="405"><span class="lineNum"> 405 </span> : }</a>
<a name="406"><span class="lineNum"> 406 </span> : </a>
<a name="407"><span class="lineNum"> 407 </span> : /**</a>
<a name="408"><span class="lineNum"> 408 </span> : * Get the next block position to operate on.</a>
<a name="409"><span class="lineNum"> 409 </span> : *</a>
<a name="410"><span class="lineNum"> 410 </span> : * This is the synchronization point for workers with the io.</a>
<a name="411"><span class="lineNum"> 411 </span> : */</a>
<a name="412"><span class="lineNum"> 412 </span><span class="lineCov"> 152116 : static block_off_t io_read_next_thread(struct snapraid_io* io, void*** buffer)</span></a>
<a name="413"><span class="lineNum"> 413 </span> : {</a>
<a name="414"><span class="lineNum"> 414 </span> : block_off_t blockcur_schedule;</a>
<a name="415"><span class="lineNum"> 415 </span> : block_off_t blockcur_caller;</a>
<a name="416"><span class="lineNum"> 416 </span> : unsigned i;</a>
<a name="417"><span class="lineNum"> 417 </span> : </a>
<a name="418"><span class="lineNum"> 418 </span> : /* get the next parity position to process */</a>
<a name="419"><span class="lineNum"> 419 </span><span class="lineCov"> 152116 : blockcur_schedule = io_position_next(io);</span></a>
<a name="420"><span class="lineNum"> 420 </span> : </a>
<a name="421"><span class="lineNum"> 421 </span> : /* ensure that all data/parity was read */</a>
<a name="422"><span class="lineNum"> 422 </span><span class="lineCov"> 152116 : assert(io-&gt;reader_list[0] == io-&gt;reader_max);</span></a>
<a name="423"><span class="lineNum"> 423 </span> : </a>
<a name="424"><span class="lineNum"> 424 </span> : /* setup the list of workers to process */</a>
<a name="425"><span class="lineNum"> 425 </span><span class="lineCov"> 1428896 : for (i = 0; i &lt;= io-&gt;reader_max; ++i)</span></a>
<a name="426"><span class="lineNum"> 426 </span><span class="lineCov"> 1276780 : io-&gt;reader_list[i] = i;</span></a>
<a name="427"><span class="lineNum"> 427 </span> : </a>
<a name="428"><span class="lineNum"> 428 </span> : /* the synchronization is protected by the io mutex */</a>
<a name="429"><span class="lineNum"> 429 </span><span class="lineCov"> 152116 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span></a>
<a name="430"><span class="lineNum"> 430 </span> : </a>
<a name="431"><span class="lineNum"> 431 </span> : /* schedule the next read */</a>
<a name="432"><span class="lineNum"> 432 </span><span class="lineCov"> 152116 : io_reader_sched(io, io-&gt;reader_index, blockcur_schedule);</span></a>
<a name="433"><span class="lineNum"> 433 </span> : </a>
<a name="434"><span class="lineNum"> 434 </span> : /* set the index for the tasks to return to the caller */</a>
<a name="435"><span class="lineNum"> 435 </span><span class="lineCov"> 152116 : io-&gt;reader_index = (io-&gt;reader_index + 1) % io-&gt;io_max;</span></a>
<a name="436"><span class="lineNum"> 436 </span> : </a>
<a name="437"><span class="lineNum"> 437 </span> : /* get the position to operate at high level from one task */</a>
<a name="438"><span class="lineNum"> 438 </span><span class="lineCov"> 152116 : blockcur_caller = io-&gt;reader_map[0].task_map[io-&gt;reader_index].position;</span></a>
<a name="439"><span class="lineNum"> 439 </span> : </a>
<a name="440"><span class="lineNum"> 440 </span> : /* set the buffer to use */</a>
<a name="441"><span class="lineNum"> 441 </span><span class="lineCov"> 152116 : *buffer = io-&gt;buffer_map[io-&gt;reader_index];</span></a>
<a name="442"><span class="lineNum"> 442 </span> : </a>
<a name="443"><span class="lineNum"> 443 </span> : /* signal all the workers that there is a new pending task */</a>
<a name="444"><span class="lineNum"> 444 </span><span class="lineCov"> 152116 : thread_cond_broadcast_and_unlock(&amp;io-&gt;read_sched, &amp;io-&gt;io_mutex);</span></a>
<a name="445"><span class="lineNum"> 445 </span> : </a>
<a name="446"><span class="lineNum"> 446 </span><span class="lineCov"> 152116 : return blockcur_caller;</span></a>
<a name="447"><span class="lineNum"> 447 </span> : }</a>
<a name="448"><span class="lineNum"> 448 </span> : </a>
<a name="449"><span class="lineNum"> 449 </span><span class="lineCov"> 116698 : static void io_write_preset_thread(struct snapraid_io* io, block_off_t blockcur, int skip)</span></a>
<a name="450"><span class="lineNum"> 450 </span> : {</a>
<a name="451"><span class="lineNum"> 451 </span> : (void)io;</a>
<a name="452"><span class="lineNum"> 452 </span> : (void)blockcur;</a>
<a name="453"><span class="lineNum"> 453 </span> : (void)skip;</a>
<a name="454"><span class="lineNum"> 454 </span><span class="lineCov"> 116698 : }</span></a>
<a name="455"><span class="lineNum"> 455 </span> : </a>
<a name="456"><span class="lineNum"> 456 </span><span class="lineCov"> 116698 : static void io_write_next_thread(struct snapraid_io* io, block_off_t blockcur, int skip, int* writer_error)</span></a>
<a name="457"><span class="lineNum"> 457 </span> : {</a>
<a name="458"><span class="lineNum"> 458 </span> : unsigned i;</a>
<a name="459"><span class="lineNum"> 459 </span> : </a>
<a name="460"><span class="lineNum"> 460 </span> : /* ensure that all parity was written */</a>
<a name="461"><span class="lineNum"> 461 </span><span class="lineCov"> 116698 : assert(io-&gt;writer_list[0] == io-&gt;writer_max);</span></a>
<a name="462"><span class="lineNum"> 462 </span> : </a>
<a name="463"><span class="lineNum"> 463 </span> : /* setup the list of workers to process */</a>
<a name="464"><span class="lineNum"> 464 </span><span class="lineCov"> 803274 : for (i = 0; i &lt;= io-&gt;writer_max; ++i)</span></a>
<a name="465"><span class="lineNum"> 465 </span><span class="lineCov"> 686576 : io-&gt;writer_list[i] = i;</span></a>
<a name="466"><span class="lineNum"> 466 </span> : </a>
<a name="467"><span class="lineNum"> 467 </span> : /* the synchronization is protected by the io mutex */</a>
<a name="468"><span class="lineNum"> 468 </span><span class="lineCov"> 116698 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span></a>
<a name="469"><span class="lineNum"> 469 </span> : </a>
<a name="470"><span class="lineNum"> 470 </span> : /* report errors */</a>
<a name="471"><span class="lineNum"> 471 </span><span class="lineCov"> 583490 : for (i = 0; i &lt; IO_WRITER_ERROR_MAX; ++i) {</span></a>
<a name="472"><span class="lineNum"> 472 </span><span class="lineCov"> 466792 : writer_error[i] = io-&gt;writer_error[i];</span></a>
<a name="473"><span class="lineNum"> 473 </span><span class="lineCov"> 466792 : io-&gt;writer_error[i] = 0;</span></a>
<a name="474"><span class="lineNum"> 474 </span> : }</a>
<a name="475"><span class="lineNum"> 475 </span> : </a>
<a name="476"><span class="lineNum"> 476 </span><span class="lineCov"> 116698 : if (skip) {</span></a>
<a name="477"><span class="lineNum"> 477 </span> : /* skip the next write */</a>
<a name="478"><span class="lineNum"> 478 </span><span class="lineCov"> 945 : io_writer_sched_empty(io, io-&gt;writer_index, blockcur);</span></a>
<a name="479"><span class="lineNum"> 479 </span> : } else {</a>
<a name="480"><span class="lineNum"> 480 </span> : /* schedule the next write */</a>
<a name="481"><span class="lineNum"> 481 </span><span class="lineCov"> 115753 : io_writer_sched(io, io-&gt;writer_index, blockcur);</span></a>
<a name="482"><span class="lineNum"> 482 </span> : }</a>
<a name="483"><span class="lineNum"> 483 </span> : </a>
<a name="484"><span class="lineNum"> 484 </span> : /* at this point the writers must be in sync with the readers */</a>
<a name="485"><span class="lineNum"> 485 </span><span class="lineCov"> 116698 : assert(io-&gt;writer_index == io-&gt;reader_index);</span></a>
<a name="486"><span class="lineNum"> 486 </span> : </a>
<a name="487"><span class="lineNum"> 487 </span> : /* set the index to be used for the next write */</a>
<a name="488"><span class="lineNum"> 488 </span><span class="lineCov"> 116698 : io-&gt;writer_index = (io-&gt;writer_index + 1) % io-&gt;io_max;</span></a>
<a name="489"><span class="lineNum"> 489 </span> : </a>
<a name="490"><span class="lineNum"> 490 </span> : /* signal all the workers that there is a new pending task */</a>
<a name="491"><span class="lineNum"> 491 </span><span class="lineCov"> 116698 : thread_cond_broadcast_and_unlock(&amp;io-&gt;write_sched, &amp;io-&gt;io_mutex);</span></a>
<a name="492"><span class="lineNum"> 492 </span><span class="lineCov"> 116698 : }</span></a>
<a name="493"><span class="lineNum"> 493 </span> : </a>
<a name="494"><span class="lineNum"> 494 </span><span class="lineNoCov"> 0 : static void io_refresh_thread(struct snapraid_io* io)</span></a>
<a name="495"><span class="lineNum"> 495 </span> : {</a>
<a name="496"><span class="lineNum"> 496 </span> : unsigned i;</a>
<a name="497"><span class="lineNum"> 497 </span> : </a>
<a name="498"><span class="lineNum"> 498 </span> : /* the synchronization is protected by the io mutex */</a>
<a name="499"><span class="lineNum"> 499 </span><span class="lineNoCov"> 0 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span></a>
<a name="500"><span class="lineNum"> 500 </span> : </a>
<a name="501"><span class="lineNum"> 501 </span> : /* for all readers, count the number of read blocks */</a>
<a name="502"><span class="lineNum"> 502 </span><span class="lineNoCov"> 0 : for (i = 0; i &lt; io-&gt;reader_max; ++i) {</span></a>
<a name="503"><span class="lineNum"> 503 </span> : unsigned begin, end, cached;</a>
<a name="504"><span class="lineNum"> 504 </span><span class="lineNoCov"> 0 : struct snapraid_worker* worker = &amp;io-&gt;reader_map[i];</span></a>
<a name="505"><span class="lineNum"> 505 </span> : </a>
<a name="506"><span class="lineNum"> 506 </span> : /* the first block read */</a>
<a name="507"><span class="lineNum"> 507 </span><span class="lineNoCov"> 0 : begin = io-&gt;reader_index + 1;</span></a>
<a name="508"><span class="lineNum"> 508 </span> : /* the block in reading */</a>
<a name="509"><span class="lineNum"> 509 </span><span class="lineNoCov"> 0 : end = worker-&gt;index;</span></a>
<a name="510"><span class="lineNum"> 510 </span><span class="lineNoCov"> 0 : if (begin &gt; end)</span></a>
<a name="511"><span class="lineNum"> 511 </span><span class="lineNoCov"> 0 : end += io-&gt;io_max;</span></a>
<a name="512"><span class="lineNum"> 512 </span><span class="lineNoCov"> 0 : cached = end - begin;</span></a>
<a name="513"><span class="lineNum"> 513 </span> : </a>
<a name="514"><span class="lineNum"> 514 </span><span class="lineNoCov"> 0 : if (worker-&gt;parity_handle)</span></a>
<a name="515"><span class="lineNum"> 515 </span><span class="lineNoCov"> 0 : io-&gt;state-&gt;parity[worker-&gt;parity_handle-&gt;level].cached_blocks = cached;</span></a>
<a name="516"><span class="lineNum"> 516 </span> : else</a>
<a name="517"><span class="lineNum"> 517 </span><span class="lineNoCov"> 0 : worker-&gt;handle-&gt;disk-&gt;cached_blocks = cached;</span></a>
<a name="518"><span class="lineNum"> 518 </span> : }</a>
<a name="519"><span class="lineNum"> 519 </span> : </a>
<a name="520"><span class="lineNum"> 520 </span> : /* for all writers, count the number of written blocks */</a>
<a name="521"><span class="lineNum"> 521 </span> : /* note that this is a kind of &quot;opposite&quot; of cached blocks */</a>
<a name="522"><span class="lineNum"> 522 </span><span class="lineNoCov"> 0 : for (i = 0; i &lt; io-&gt;writer_max; ++i) {</span></a>
<a name="523"><span class="lineNum"> 523 </span> : unsigned begin, end, cached;</a>
<a name="524"><span class="lineNum"> 524 </span><span class="lineNoCov"> 0 : struct snapraid_worker* worker = &amp;io-&gt;writer_map[i];</span></a>
<a name="525"><span class="lineNum"> 525 </span> : </a>
<a name="526"><span class="lineNum"> 526 </span> : /* the first block written */</a>
<a name="527"><span class="lineNum"> 527 </span><span class="lineNoCov"> 0 : begin = io-&gt;writer_index + 1;</span></a>
<a name="528"><span class="lineNum"> 528 </span> : /* the block in writing */</a>
<a name="529"><span class="lineNum"> 529 </span><span class="lineNoCov"> 0 : end = worker-&gt;index;</span></a>
<a name="530"><span class="lineNum"> 530 </span><span class="lineNoCov"> 0 : if (begin &gt; end)</span></a>
<a name="531"><span class="lineNum"> 531 </span><span class="lineNoCov"> 0 : end += io-&gt;io_max;</span></a>
<a name="532"><span class="lineNum"> 532 </span><span class="lineNoCov"> 0 : cached = end - begin;</span></a>
<a name="533"><span class="lineNum"> 533 </span> : </a>
<a name="534"><span class="lineNum"> 534 </span><span class="lineNoCov"> 0 : io-&gt;state-&gt;parity[worker-&gt;parity_handle-&gt;level].cached_blocks = cached;</span></a>
<a name="535"><span class="lineNum"> 535 </span> : }</a>
<a name="536"><span class="lineNum"> 536 </span> : </a>
<a name="537"><span class="lineNum"> 537 </span><span class="lineNoCov"> 0 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span></a>
<a name="538"><span class="lineNum"> 538 </span><span class="lineNoCov"> 0 : }</span></a>
<a name="539"><span class="lineNum"> 539 </span> : </a>
<a name="540"><span class="lineNum"> 540 </span><span class="lineCov"> 114640 : static void io_flush_thread(struct snapraid_io* io)</span></a>
<a name="541"><span class="lineNum"> 541 </span> : {</a>
<a name="542"><span class="lineNum"> 542 </span> : unsigned i;</a>
<a name="543"><span class="lineNum"> 543 </span> : </a>
<a name="544"><span class="lineNum"> 544 </span><span class="lineCov"> 114549 : while (1) {</span></a>
<a name="545"><span class="lineNum"> 545 </span><span class="lineCov"> 114640 : int all_done = 1;</span></a>
<a name="546"><span class="lineNum"> 546 </span> : </a>
<a name="547"><span class="lineNum"> 547 </span> : /* the synchronization is protected by the io mutex */</a>
<a name="548"><span class="lineNum"> 548 </span><span class="lineCov"> 114640 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span></a>
<a name="549"><span class="lineNum"> 549 </span> : </a>
<a name="550"><span class="lineNum"> 550 </span><span class="lineCov"> 149307 : for (i = 0; i &lt; io-&gt;writer_max; ++i) {</span></a>
<a name="551"><span class="lineNum"> 551 </span><span class="lineCov"> 149216 : struct snapraid_worker* worker = &amp;io-&gt;writer_map[i];</span></a>
<a name="552"><span class="lineNum"> 552 </span> : </a>
<a name="553"><span class="lineNum"> 553 </span> : /* get the next pending task */</a>
<a name="554"><span class="lineNum"> 554 </span><span class="lineCov"> 149216 : unsigned next_index = (worker-&gt;index + 1) % io-&gt;io_max;</span></a>
<a name="555"><span class="lineNum"> 555 </span> : </a>
<a name="556"><span class="lineNum"> 556 </span> : /* if the queue of pending tasks is not empty */</a>
<a name="557"><span class="lineNum"> 557 </span><span class="lineCov"> 149216 : if (next_index != io-&gt;writer_index) {</span></a>
<a name="558"><span class="lineNum"> 558 </span><span class="lineCov"> 114549 : all_done = 0;</span></a>
<a name="559"><span class="lineNum"> 559 </span><span class="lineCov"> 114549 : break;</span></a>
<a name="560"><span class="lineNum"> 560 </span> : }</a>
<a name="561"><span class="lineNum"> 561 </span> : }</a>
<a name="562"><span class="lineNum"> 562 </span> : </a>
<a name="563"><span class="lineNum"> 563 </span><span class="lineCov"> 114640 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span></a>
<a name="564"><span class="lineNum"> 564 </span> : </a>
<a name="565"><span class="lineNum"> 565 </span><span class="lineCov"> 114640 : if (all_done)</span></a>
<a name="566"><span class="lineNum"> 566 </span><span class="lineCov"> 91 : break;</span></a>
<a name="567"><span class="lineNum"> 567 </span> : </a>
<a name="568"><span class="lineNum"> 568 </span> : /* wait for something to complete */</a>
<a name="569"><span class="lineNum"> 569 </span><span class="lineCov"> 114549 : thread_yield();</span></a>
<a name="570"><span class="lineNum"> 570 </span> : }</a>
<a name="571"><span class="lineNum"> 571 </span><span class="lineCov"> 91 : }</span></a>
<a name="572"><span class="lineNum"> 572 </span> : </a>
<a name="573"><span class="lineNum"> 573 </span><span class="lineCov"> 1123956 : static struct snapraid_task* io_task_read_thread(struct snapraid_io* io, unsigned base, unsigned count, unsigned* pos, unsigned* waiting_map, unsigned* waiting_mac)</span></a>
<a name="574"><span class="lineNum"> 574 </span> : {</a>
<a name="575"><span class="lineNum"> 575 </span> : unsigned waiting_cycle;</a>
<a name="576"><span class="lineNum"> 576 </span> : </a>
<a name="577"><span class="lineNum"> 577 </span> : /* count the waiting cycle */</a>
<a name="578"><span class="lineNum"> 578 </span><span class="lineCov"> 1123956 : waiting_cycle = 0;</span></a>
<a name="579"><span class="lineNum"> 579 </span> : </a>
<a name="580"><span class="lineNum"> 580 </span> : /* clear the waiting indexes */</a>
<a name="581"><span class="lineNum"> 581 </span><span class="lineCov"> 1123956 : *waiting_mac = 0;</span></a>
<a name="582"><span class="lineNum"> 582 </span> : </a>
<a name="583"><span class="lineNum"> 583 </span> : /* the synchronization is protected by the io mutex */</a>
<a name="584"><span class="lineNum"> 584 </span><span class="lineCov"> 1123956 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span></a>
<a name="585"><span class="lineNum"> 585 </span> : </a>
<a name="586"><span class="lineNum"> 586 </span><span class="lineCov"> 716 : while (1) {</span></a>
<a name="587"><span class="lineNum"> 587 </span> : unsigned char* let;</a>
<a name="588"><span class="lineNum"> 588 </span> : unsigned busy_index;</a>
<a name="589"><span class="lineNum"> 589 </span> : </a>
<a name="590"><span class="lineNum"> 590 </span> : /* get the index the IO is using */</a>
<a name="591"><span class="lineNum"> 591 </span> : /* we must ensure that this index has not a read in progress */</a>
<a name="592"><span class="lineNum"> 592 </span> : /* to avoid a concurrent access */</a>
<a name="593"><span class="lineNum"> 593 </span><span class="lineCov"> 1124672 : busy_index = io-&gt;reader_index;</span></a>
<a name="594"><span class="lineNum"> 594 </span> : </a>
<a name="595"><span class="lineNum"> 595 </span> : /* search for a worker that has already finished */</a>
<a name="596"><span class="lineNum"> 596 </span><span class="lineCov"> 1124672 : let = &amp;io-&gt;reader_list[0];</span></a>
<a name="597"><span class="lineNum"> 597 </span><span class="lineCov"> 3863 : while (1) {</span></a>
<a name="598"><span class="lineNum"> 598 </span><span class="lineCov"> 1128535 : unsigned i = *let;</span></a>
<a name="599"><span class="lineNum"> 599 </span> : </a>
<a name="600"><span class="lineNum"> 600 </span> : /* if we are at the end */</a>
<a name="601"><span class="lineNum"> 601 </span><span class="lineCov"> 1128535 : if (i == io-&gt;reader_max)</span></a>
<a name="602"><span class="lineNum"> 602 </span><span class="lineCov"> 716 : break;</span></a>
<a name="603"><span class="lineNum"> 603 </span> : </a>
<a name="604"><span class="lineNum"> 604 </span> : /* if it's in range */</a>
<a name="605"><span class="lineNum"> 605 </span><span class="lineCov"> 1127819 : if (base &lt;= i &amp;&amp; i &lt; base + count) {</span></a>
<a name="606"><span class="lineNum"> 606 </span> : struct snapraid_worker* worker;</a>
<a name="607"><span class="lineNum"> 607 </span> : </a>
<a name="608"><span class="lineNum"> 608 </span> : /* if it's the first cycle */</a>
<a name="609"><span class="lineNum"> 609 </span><span class="lineCov"> 1126379 : if (waiting_cycle == 0) {</span></a>
<a name="610"><span class="lineNum"> 610 </span> : /* store the waiting indexes */</a>
<a name="611"><span class="lineNum"> 611 </span><span class="lineCov"> 1125565 : waiting_map[(*waiting_mac)++] = i - base;</span></a>
<a name="612"><span class="lineNum"> 612 </span> : }</a>
<a name="613"><span class="lineNum"> 613 </span> : </a>
<a name="614"><span class="lineNum"> 614 </span><span class="lineCov"> 1126379 : worker = &amp;io-&gt;reader_map[i];</span></a>
<a name="615"><span class="lineNum"> 615 </span> : </a>
<a name="616"><span class="lineNum"> 616 </span> : /* if the worker has finished this index */</a>
<a name="617"><span class="lineNum"> 617 </span><span class="lineCov"> 1126379 : if (busy_index != worker-&gt;index) {</span></a>
<a name="618"><span class="lineNum"> 618 </span> : struct snapraid_task* task;</a>
<a name="619"><span class="lineNum"> 619 </span> : </a>
<a name="620"><span class="lineNum"> 620 </span><span class="lineCov"> 1123956 : task = &amp;worker-&gt;task_map[io-&gt;reader_index];</span></a>
<a name="621"><span class="lineNum"> 621 </span> : </a>
<a name="622"><span class="lineNum"> 622 </span><span class="lineCov"> 1123956 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span></a>
<a name="623"><span class="lineNum"> 623 </span> : </a>
<a name="624"><span class="lineNum"> 624 </span> : /* mark the worker as processed */</a>
<a name="625"><span class="lineNum"> 625 </span> : /* setting the previous one to point at the next one */</a>
<a name="626"><span class="lineNum"> 626 </span><span class="lineCov"> 1123956 : *let = io-&gt;reader_list[i + 1];</span></a>
<a name="627"><span class="lineNum"> 627 </span> : </a>
<a name="628"><span class="lineNum"> 628 </span> : /* return the position */</a>
<a name="629"><span class="lineNum"> 629 </span><span class="lineCov"> 1123956 : *pos = i - base;</span></a>
<a name="630"><span class="lineNum"> 630 </span> : </a>
<a name="631"><span class="lineNum"> 631 </span> : /* on the first cycle, no one is waiting */</a>
<a name="632"><span class="lineNum"> 632 </span><span class="lineCov"> 1123956 : if (waiting_cycle == 0)</span></a>
<a name="633"><span class="lineNum"> 633 </span><span class="lineCov"> 1123252 : *waiting_mac = 0;</span></a>
<a name="634"><span class="lineNum"> 634 </span> : </a>
<a name="635"><span class="lineNum"> 635 </span><span class="lineCov"> 1123956 : return task;</span></a>
<a name="636"><span class="lineNum"> 636 </span> : }</a>
<a name="637"><span class="lineNum"> 637 </span> : }</a>
<a name="638"><span class="lineNum"> 638 </span> : </a>
<a name="639"><span class="lineNum"> 639 </span> : /* next position to check */</a>
<a name="640"><span class="lineNum"> 640 </span><span class="lineCov"> 3863 : let = &amp;io-&gt;reader_list[i + 1];</span></a>
<a name="641"><span class="lineNum"> 641 </span> : }</a>
<a name="642"><span class="lineNum"> 642 </span> : </a>
<a name="643"><span class="lineNum"> 643 </span> : /* if no worker is ready, wait for an event */</a>
<a name="644"><span class="lineNum"> 644 </span><span class="lineCov"> 716 : thread_cond_wait(&amp;io-&gt;read_done, &amp;io-&gt;io_mutex);</span></a>
<a name="645"><span class="lineNum"> 645 </span> : </a>
<a name="646"><span class="lineNum"> 646 </span> : /* count the cycles */</a>
<a name="647"><span class="lineNum"> 647 </span><span class="lineCov"> 716 : ++waiting_cycle;</span></a>
<a name="648"><span class="lineNum"> 648 </span> : }</a>
<a name="649"><span class="lineNum"> 649 </span> : }</a>
<a name="650"><span class="lineNum"> 650 </span> : </a>
<a name="651"><span class="lineNum"> 651 </span><span class="lineCov"> 912072 : static struct snapraid_task* io_data_read_thread(struct snapraid_io* io, unsigned* pos, unsigned* waiting_map, unsigned* waiting_mac)</span></a>
<a name="652"><span class="lineNum"> 652 </span> : {</a>
<a name="653"><span class="lineNum"> 653 </span><span class="lineCov"> 912072 : return io_task_read_thread(io, io-&gt;data_base, io-&gt;data_count, pos, waiting_map, waiting_mac);</span></a>
<a name="654"><span class="lineNum"> 654 </span> : }</a>
<a name="655"><span class="lineNum"> 655 </span> : </a>
<a name="656"><span class="lineNum"> 656 </span><span class="lineCov"> 211884 : static struct snapraid_task* io_parity_read_thread(struct snapraid_io* io, unsigned* pos, unsigned* waiting_map, unsigned* waiting_mac)</span></a>
<a name="657"><span class="lineNum"> 657 </span> : {</a>
<a name="658"><span class="lineNum"> 658 </span><span class="lineCov"> 211884 : return io_task_read_thread(io, io-&gt;parity_base, io-&gt;parity_count, pos, waiting_map, waiting_mac);</span></a>
<a name="659"><span class="lineNum"> 659 </span> : }</a>
<a name="660"><span class="lineNum"> 660 </span> : </a>
<a name="661"><span class="lineNum"> 661 </span><span class="lineCov"> 569878 : static void io_parity_write_thread(struct snapraid_io* io, unsigned* pos, unsigned* waiting_map, unsigned* waiting_mac)</span></a>
<a name="662"><span class="lineNum"> 662 </span> : {</a>
<a name="663"><span class="lineNum"> 663 </span> : unsigned waiting_cycle;</a>
<a name="664"><span class="lineNum"> 664 </span> : </a>
<a name="665"><span class="lineNum"> 665 </span> : /* count the waiting cycle */</a>
<a name="666"><span class="lineNum"> 666 </span><span class="lineCov"> 569878 : waiting_cycle = 0;</span></a>
<a name="667"><span class="lineNum"> 667 </span> : </a>
<a name="668"><span class="lineNum"> 668 </span> : /* clear the waiting indexes */</a>
<a name="669"><span class="lineNum"> 669 </span><span class="lineCov"> 569878 : *waiting_mac = 0;</span></a>
<a name="670"><span class="lineNum"> 670 </span> : </a>
<a name="671"><span class="lineNum"> 671 </span> : /* the synchronization is protected by the io mutex */</a>
<a name="672"><span class="lineNum"> 672 </span><span class="lineCov"> 569878 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span></a>
<a name="673"><span class="lineNum"> 673 </span> : </a>
<a name="674"><span class="lineNum"> 674 </span><span class="lineCov"> 4392 : while (1) {</span></a>
<a name="675"><span class="lineNum"> 675 </span> : unsigned char* let;</a>
<a name="676"><span class="lineNum"> 676 </span> : unsigned busy_index;</a>
<a name="677"><span class="lineNum"> 677 </span> : </a>
<a name="678"><span class="lineNum"> 678 </span> : /* get the next index the IO is going to use */</a>
<a name="679"><span class="lineNum"> 679 </span> : /* we must ensure that this index has not a write in progress */</a>
<a name="680"><span class="lineNum"> 680 </span> : /* to avoid a concurrent access */</a>
<a name="681"><span class="lineNum"> 681 </span> : /* note that we are already sure that a write is not in progress */</a>
<a name="682"><span class="lineNum"> 682 </span> : /* at the index the IO is using at now */</a>
<a name="683"><span class="lineNum"> 683 </span><span class="lineCov"> 574270 : busy_index = (io-&gt;writer_index + 1) % io-&gt;io_max;</span></a>
<a name="684"><span class="lineNum"> 684 </span> : </a>
<a name="685"><span class="lineNum"> 685 </span> : /* search for a worker that has already finished */</a>
<a name="686"><span class="lineNum"> 686 </span><span class="lineCov"> 574270 : let = &amp;io-&gt;writer_list[0];</span></a>
<a name="687"><span class="lineNum"> 687 </span><span class="lineCov"> 4392 : while (1) {</span></a>
<a name="688"><span class="lineNum"> 688 </span><span class="lineCov"> 578662 : unsigned i = *let;</span></a>
<a name="689"><span class="lineNum"> 689 </span> : struct snapraid_worker* worker;</a>
<a name="690"><span class="lineNum"> 690 </span> : </a>
<a name="691"><span class="lineNum"> 691 </span> : /* if we are at the end */</a>
<a name="692"><span class="lineNum"> 692 </span><span class="lineCov"> 578662 : if (i == io-&gt;writer_max)</span></a>
<a name="693"><span class="lineNum"> 693 </span><span class="lineCov"> 4392 : break;</span></a>
<a name="694"><span class="lineNum"> 694 </span> : </a>
<a name="695"><span class="lineNum"> 695 </span> : /* if it's the first cycle */</a>
<a name="696"><span class="lineNum"> 696 </span><span class="lineCov"> 574270 : if (waiting_cycle == 0) {</span></a>
<a name="697"><span class="lineNum"> 697 </span> : /* store the waiting indexes */</a>
<a name="698"><span class="lineNum"> 698 </span><span class="lineCov"> 569878 : waiting_map[(*waiting_mac)++] = i;</span></a>
<a name="699"><span class="lineNum"> 699 </span> : }</a>
<a name="700"><span class="lineNum"> 700 </span> : </a>
<a name="701"><span class="lineNum"> 701 </span><span class="lineCov"> 574270 : worker = &amp;io-&gt;writer_map[i];</span></a>
<a name="702"><span class="lineNum"> 702 </span> : </a>
<a name="703"><span class="lineNum"> 703 </span> : /* the two indexes cannot be equal */</a>
<a name="704"><span class="lineNum"> 704 </span><span class="lineCov"> 574270 : assert(io-&gt;writer_index != worker-&gt;index);</span></a>
<a name="705"><span class="lineNum"> 705 </span> : </a>
<a name="706"><span class="lineNum"> 706 </span> : /* if the worker has finished this index */</a>
<a name="707"><span class="lineNum"> 707 </span><span class="lineCov"> 574270 : if (busy_index != worker-&gt;index) {</span></a>
<a name="708"><span class="lineNum"> 708 </span><span class="lineCov"> 569878 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span></a>
<a name="709"><span class="lineNum"> 709 </span> : </a>
<a name="710"><span class="lineNum"> 710 </span> : /* mark the worker as processed */</a>
<a name="711"><span class="lineNum"> 711 </span> : /* setting the previous one to point at the next one */</a>
<a name="712"><span class="lineNum"> 712 </span><span class="lineCov"> 569878 : *let = io-&gt;writer_list[i + 1];</span></a>
<a name="713"><span class="lineNum"> 713 </span> : </a>
<a name="714"><span class="lineNum"> 714 </span> : /* return the position */</a>
<a name="715"><span class="lineNum"> 715 </span><span class="lineCov"> 569878 : *pos = i;</span></a>
<a name="716"><span class="lineNum"> 716 </span> : </a>
<a name="717"><span class="lineNum"> 717 </span> : /* on the first cycle, no one is waiting */</a>
<a name="718"><span class="lineNum"> 718 </span><span class="lineCov"> 569878 : if (waiting_cycle == 0)</span></a>
<a name="719"><span class="lineNum"> 719 </span><span class="lineCov"> 565486 : *waiting_mac = 0;</span></a>
<a name="720"><span class="lineNum"> 720 </span> : </a>
<a name="721"><span class="lineNum"> 721 </span><span class="lineCov"> 569878 : return;</span></a>
<a name="722"><span class="lineNum"> 722 </span> : }</a>
<a name="723"><span class="lineNum"> 723 </span> : </a>
<a name="724"><span class="lineNum"> 724 </span> : /* next position to check */</a>
<a name="725"><span class="lineNum"> 725 </span><span class="lineCov"> 4392 : let = &amp;io-&gt;writer_list[i + 1];</span></a>
<a name="726"><span class="lineNum"> 726 </span> : }</a>
<a name="727"><span class="lineNum"> 727 </span> : </a>
<a name="728"><span class="lineNum"> 728 </span> : /* if no worker is ready, wait for an event */</a>
<a name="729"><span class="lineNum"> 729 </span><span class="lineCov"> 4392 : thread_cond_wait(&amp;io-&gt;write_done, &amp;io-&gt;io_mutex);</span></a>
<a name="730"><span class="lineNum"> 730 </span> : </a>
<a name="731"><span class="lineNum"> 731 </span> : /* count the cycles */</a>
<a name="732"><span class="lineNum"> 732 </span><span class="lineCov"> 4392 : ++waiting_cycle;</span></a>
<a name="733"><span class="lineNum"> 733 </span> : }</a>
<a name="734"><span class="lineNum"> 734 </span> : }</a>
<a name="735"><span class="lineNum"> 735 </span> : </a>
<a name="736"><span class="lineNum"> 736 </span><span class="lineCov"> 1124100 : static void io_reader_worker(struct snapraid_worker* worker, struct snapraid_task* task)</span></a>
<a name="737"><span class="lineNum"> 737 </span> : {</a>
<a name="738"><span class="lineNum"> 738 </span> : /* if we reached the end */</a>
<a name="739"><span class="lineNum"> 739 </span><span class="lineCov"> 1124100 : if (task-&gt;position &gt;= worker-&gt;io-&gt;block_max) {</span></a>
<a name="740"><span class="lineNum"> 740 </span> : /* complete a dummy task */</a>
<a name="741"><span class="lineNum"> 741 </span><span class="lineCov"> 144 : task-&gt;state = TASK_STATE_EMPTY;</span></a>
<a name="742"><span class="lineNum"> 742 </span> : } else {</a>
<a name="743"><span class="lineNum"> 743 </span><span class="lineCov"> 1123956 : worker-&gt;func(worker, task);</span></a>
<a name="744"><span class="lineNum"> 744 </span> : }</a>
<a name="745"><span class="lineNum"> 745 </span><span class="lineCov"> 1124100 : }</span></a>
<a name="746"><span class="lineNum"> 746 </span> : </a>
<a name="747"><span class="lineNum"> 747 </span><span class="lineCov"> 708 : static void* io_reader_thread(void* arg)</span></a>
<a name="748"><span class="lineNum"> 748 </span> : {</a>
<a name="749"><span class="lineNum"> 749 </span><span class="lineCov"> 708 : struct snapraid_worker* worker = arg;</span></a>
<a name="750"><span class="lineNum"> 750 </span> : </a>
<a name="751"><span class="lineNum"> 751 </span> : /* force completion of the first task */</a>
<a name="752"><span class="lineNum"> 752 </span><span class="lineCov"> 708 : io_reader_worker(worker, &amp;worker-&gt;task_map[0]);</span></a>
<a name="753"><span class="lineNum"> 753 </span> : </a>
<a name="754"><span class="lineNum"> 754 </span><span class="lineCov"> 1213864 : while (1) {</span></a>
<a name="755"><span class="lineNum"> 755 </span> : struct snapraid_task* task;</a>
<a name="756"><span class="lineNum"> 756 </span> : </a>
<a name="757"><span class="lineNum"> 757 </span> : /* get the new task */</a>
<a name="758"><span class="lineNum"> 758 </span><span class="lineCov"> 1214572 : task = io_reader_step(worker);</span></a>
<a name="759"><span class="lineNum"> 759 </span> : </a>
<a name="760"><span class="lineNum"> 760 </span> : /* if no task, it means to exit */</a>
<a name="761"><span class="lineNum"> 761 </span><span class="lineCov"> 1214572 : if (!task)</span></a>
<a name="762"><span class="lineNum"> 762 </span><span class="lineCov"> 708 : break;</span></a>
<a name="763"><span class="lineNum"> 763 </span> : </a>
<a name="764"><span class="lineNum"> 764 </span> : /* nothing more to do */</a>
<a name="765"><span class="lineNum"> 765 </span><span class="lineCov"> 1213864 : if (task-&gt;state == TASK_STATE_EMPTY)</span></a>
<a name="766"><span class="lineNum"> 766 </span><span class="lineCov"> 90472 : continue;</span></a>
<a name="767"><span class="lineNum"> 767 </span> : </a>
<a name="768"><span class="lineNum"> 768 </span><span class="lineCov"> 1123392 : assert(task-&gt;state == TASK_STATE_READY);</span></a>
<a name="769"><span class="lineNum"> 769 </span> : </a>
<a name="770"><span class="lineNum"> 770 </span> : /* work on the assigned task */</a>
<a name="771"><span class="lineNum"> 771 </span><span class="lineCov"> 1123392 : io_reader_worker(worker, task);</span></a>
<a name="772"><span class="lineNum"> 772 </span> : }</a>
<a name="773"><span class="lineNum"> 773 </span> : </a>
<a name="774"><span class="lineNum"> 774 </span><span class="lineCov"> 708 : return 0;</span></a>
<a name="775"><span class="lineNum"> 775 </span> : }</a>
<a name="776"><span class="lineNum"> 776 </span> : </a>
<a name="777"><span class="lineNum"> 777 </span><span class="lineCov"> 505 : static void* io_writer_thread(void* arg)</span></a>
<a name="778"><span class="lineNum"> 778 </span> : {</a>
<a name="779"><span class="lineNum"> 779 </span><span class="lineCov"> 505 : struct snapraid_worker* worker = arg;</span></a>
<a name="780"><span class="lineNum"> 780 </span><span class="lineCov"> 505 : int latest_state = TASK_STATE_DONE;</span></a>
<a name="781"><span class="lineNum"> 781 </span> : </a>
<a name="782"><span class="lineNum"> 782 </span><span class="lineCov"> 569878 : while (1) {</span></a>
<a name="783"><span class="lineNum"> 783 </span> : struct snapraid_task* task;</a>
<a name="784"><span class="lineNum"> 784 </span> : </a>
<a name="785"><span class="lineNum"> 785 </span> : /* get the new task */</a>
<a name="786"><span class="lineNum"> 786 </span><span class="lineCov"> 570383 : task = io_writer_step(worker, latest_state);</span></a>
<a name="787"><span class="lineNum"> 787 </span> : </a>
<a name="788"><span class="lineNum"> 788 </span> : /* if no task, it means to exit */</a>
<a name="789"><span class="lineNum"> 789 </span><span class="lineCov"> 570383 : if (!task)</span></a>
<a name="790"><span class="lineNum"> 790 </span><span class="lineCov"> 505 : break;</span></a>
<a name="791"><span class="lineNum"> 791 </span> : </a>
<a name="792"><span class="lineNum"> 792 </span> : /* nothing more to do */</a>
<a name="793"><span class="lineNum"> 793 </span><span class="lineCov"> 569878 : if (task-&gt;state == TASK_STATE_EMPTY) {</span></a>
<a name="794"><span class="lineNum"> 794 </span><span class="lineCov"> 5670 : latest_state = TASK_STATE_DONE;</span></a>
<a name="795"><span class="lineNum"> 795 </span><span class="lineCov"> 5670 : continue;</span></a>
<a name="796"><span class="lineNum"> 796 </span> : }</a>
<a name="797"><span class="lineNum"> 797 </span> : </a>
<a name="798"><span class="lineNum"> 798 </span><span class="lineCov"> 564208 : assert(task-&gt;state == TASK_STATE_READY);</span></a>
<a name="799"><span class="lineNum"> 799 </span> : </a>
<a name="800"><span class="lineNum"> 800 </span> : /* work on the assigned task */</a>
<a name="801"><span class="lineNum"> 801 </span><span class="lineCov"> 564208 : worker-&gt;func(worker, task);</span></a>
<a name="802"><span class="lineNum"> 802 </span> : </a>
<a name="803"><span class="lineNum"> 803 </span> : /* save the resulting state */</a>
<a name="804"><span class="lineNum"> 804 </span><span class="lineCov"> 564208 : latest_state = task-&gt;state;</span></a>
<a name="805"><span class="lineNum"> 805 </span> : }</a>
<a name="806"><span class="lineNum"> 806 </span> : </a>
<a name="807"><span class="lineNum"> 807 </span><span class="lineCov"> 505 : return 0;</span></a>
<a name="808"><span class="lineNum"> 808 </span> : }</a>
<a name="809"><span class="lineNum"> 809 </span> : </a>
<a name="810"><span class="lineNum"> 810 </span><span class="lineCov"> 104 : static void io_start_thread(struct snapraid_io* io,</span></a>
<a name="811"><span class="lineNum"> 811 </span> : block_off_t blockstart, block_off_t blockmax,</a>
<a name="812"><span class="lineNum"> 812 </span> : bit_vect_t* block_enabled)</a>
<a name="813"><span class="lineNum"> 813 </span> : {</a>
<a name="814"><span class="lineNum"> 814 </span> : unsigned i;</a>
<a name="815"><span class="lineNum"> 815 </span> : </a>
<a name="816"><span class="lineNum"> 816 </span><span class="lineCov"> 104 : io-&gt;block_start = blockstart;</span></a>
<a name="817"><span class="lineNum"> 817 </span><span class="lineCov"> 104 : io-&gt;block_max = blockmax;</span></a>
<a name="818"><span class="lineNum"> 818 </span><span class="lineCov"> 104 : io-&gt;block_enabled = block_enabled;</span></a>
<a name="819"><span class="lineNum"> 819 </span><span class="lineCov"> 104 : io-&gt;block_next = blockstart;</span></a>
<a name="820"><span class="lineNum"> 820 </span> : </a>
<a name="821"><span class="lineNum"> 821 </span><span class="lineCov"> 104 : io-&gt;done = 0;</span></a>
<a name="822"><span class="lineNum"> 822 </span><span class="lineCov"> 104 : io-&gt;reader_index = io-&gt;io_max - 1; /* the first io_read_next() is going to set it to 0 */</span></a>
<a name="823"><span class="lineNum"> 823 </span><span class="lineCov"> 104 : io-&gt;writer_index = 0;</span></a>
<a name="824"><span class="lineNum"> 824 </span> : </a>
<a name="825"><span class="lineNum"> 825 </span> : /* clear writer errors */</a>
<a name="826"><span class="lineNum"> 826 </span><span class="lineCov"> 520 : for (i = 0; i &lt; IO_WRITER_ERROR_MAX; ++i)</span></a>
<a name="827"><span class="lineNum"> 827 </span><span class="lineCov"> 416 : io-&gt;writer_error[i] = 0;</span></a>
<a name="828"><span class="lineNum"> 828 </span> : </a>
<a name="829"><span class="lineNum"> 829 </span> : /* setup the initial read pending tasks, except the latest one, */</a>
<a name="830"><span class="lineNum"> 830 </span> : /* the latest will be initialized at the fist io_read_next() call */</a>
<a name="831"><span class="lineNum"> 831 </span><span class="lineCov"> 13312 : for (i = 0; i &lt; io-&gt;io_max - 1; ++i) {</span></a>
<a name="832"><span class="lineNum"> 832 </span><span class="lineCov"> 13208 : block_off_t blockcur = io_position_next(io);</span></a>
<a name="833"><span class="lineNum"> 833 </span> : </a>
<a name="834"><span class="lineNum"> 834 </span><span class="lineCov"> 13208 : io_reader_sched(io, i, blockcur);</span></a>
<a name="835"><span class="lineNum"> 835 </span> : }</a>
<a name="836"><span class="lineNum"> 836 </span> : </a>
<a name="837"><span class="lineNum"> 837 </span> : /* setup the lists of workers to process */</a>
<a name="838"><span class="lineNum"> 838 </span><span class="lineCov"> 104 : io-&gt;reader_list[0] = io-&gt;reader_max;</span></a>
<a name="839"><span class="lineNum"> 839 </span><span class="lineCov"> 713 : for (i = 0; i &lt;= io-&gt;writer_max; ++i)</span></a>
<a name="840"><span class="lineNum"> 840 </span><span class="lineCov"> 609 : io-&gt;writer_list[i] = i;</span></a>
<a name="841"><span class="lineNum"> 841 </span> : </a>
<a name="842"><span class="lineNum"> 842 </span> : /* start the reader threads */</a>
<a name="843"><span class="lineNum"> 843 </span><span class="lineCov"> 812 : for (i = 0; i &lt; io-&gt;reader_max; ++i) {</span></a>
<a name="844"><span class="lineNum"> 844 </span><span class="lineCov"> 708 : struct snapraid_worker* worker = &amp;io-&gt;reader_map[i];</span></a>
<a name="845"><span class="lineNum"> 845 </span> : </a>
<a name="846"><span class="lineNum"> 846 </span><span class="lineCov"> 708 : worker-&gt;index = 0;</span></a>
<a name="847"><span class="lineNum"> 847 </span> : </a>
<a name="848"><span class="lineNum"> 848 </span><span class="lineCov"> 708 : thread_create(&amp;worker-&gt;thread, io_reader_thread, worker);</span></a>
<a name="849"><span class="lineNum"> 849 </span> : }</a>
<a name="850"><span class="lineNum"> 850 </span> : </a>
<a name="851"><span class="lineNum"> 851 </span> : /* start the writer threads */</a>
<a name="852"><span class="lineNum"> 852 </span><span class="lineCov"> 609 : for (i = 0; i &lt; io-&gt;writer_max; ++i) {</span></a>
<a name="853"><span class="lineNum"> 853 </span><span class="lineCov"> 505 : struct snapraid_worker* worker = &amp;io-&gt;writer_map[i];</span></a>
<a name="854"><span class="lineNum"> 854 </span> : </a>
<a name="855"><span class="lineNum"> 855 </span><span class="lineCov"> 505 : worker-&gt;index = io-&gt;io_max - 1;</span></a>
<a name="856"><span class="lineNum"> 856 </span> : </a>
<a name="857"><span class="lineNum"> 857 </span><span class="lineCov"> 505 : thread_create(&amp;worker-&gt;thread, io_writer_thread, worker);</span></a>
<a name="858"><span class="lineNum"> 858 </span> : }</a>
<a name="859"><span class="lineNum"> 859 </span><span class="lineCov"> 104 : }</span></a>
<a name="860"><span class="lineNum"> 860 </span> : </a>
<a name="861"><span class="lineNum"> 861 </span><span class="lineCov"> 104 : static void io_stop_thread(struct snapraid_io* io)</span></a>
<a name="862"><span class="lineNum"> 862 </span> : {</a>
<a name="863"><span class="lineNum"> 863 </span> : unsigned i;</a>
<a name="864"><span class="lineNum"> 864 </span> : </a>
<a name="865"><span class="lineNum"> 865 </span><span class="lineCov"> 104 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span></a>
<a name="866"><span class="lineNum"> 866 </span> : </a>
<a name="867"><span class="lineNum"> 867 </span> : /* mark that we are stopping */</a>
<a name="868"><span class="lineNum"> 868 </span><span class="lineCov"> 104 : io-&gt;done = 1;</span></a>
<a name="869"><span class="lineNum"> 869 </span> : </a>
<a name="870"><span class="lineNum"> 870 </span> : /* signal all the threads to recognize the new state */</a>
<a name="871"><span class="lineNum"> 871 </span><span class="lineCov"> 104 : thread_cond_broadcast(&amp;io-&gt;read_sched);</span></a>
<a name="872"><span class="lineNum"> 872 </span><span class="lineCov"> 104 : thread_cond_broadcast(&amp;io-&gt;write_sched);</span></a>
<a name="873"><span class="lineNum"> 873 </span> : </a>
<a name="874"><span class="lineNum"> 874 </span><span class="lineCov"> 104 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span></a>
<a name="875"><span class="lineNum"> 875 </span> : </a>
<a name="876"><span class="lineNum"> 876 </span> : /* wait for all readers to terminate */</a>
<a name="877"><span class="lineNum"> 877 </span><span class="lineCov"> 812 : for (i = 0; i &lt; io-&gt;reader_max; ++i) {</span></a>
<a name="878"><span class="lineNum"> 878 </span><span class="lineCov"> 708 : struct snapraid_worker* worker = &amp;io-&gt;reader_map[i];</span></a>
<a name="879"><span class="lineNum"> 879 </span> : void* retval;</a>
<a name="880"><span class="lineNum"> 880 </span> : </a>
<a name="881"><span class="lineNum"> 881 </span> : /* wait for thread termination */</a>
<a name="882"><span class="lineNum"> 882 </span><span class="lineCov"> 708 : thread_join(worker-&gt;thread, &amp;retval);</span></a>
<a name="883"><span class="lineNum"> 883 </span> : }</a>
<a name="884"><span class="lineNum"> 884 </span> : </a>
<a name="885"><span class="lineNum"> 885 </span> : /* wait for all writers to terminate */</a>
<a name="886"><span class="lineNum"> 886 </span><span class="lineCov"> 609 : for (i = 0; i &lt; io-&gt;writer_max; ++i) {</span></a>
<a name="887"><span class="lineNum"> 887 </span><span class="lineCov"> 505 : struct snapraid_worker* worker = &amp;io-&gt;writer_map[i];</span></a>
<a name="888"><span class="lineNum"> 888 </span> : void* retval;</a>
<a name="889"><span class="lineNum"> 889 </span> : </a>
<a name="890"><span class="lineNum"> 890 </span> : /* wait for thread termination */</a>
<a name="891"><span class="lineNum"> 891 </span><span class="lineCov"> 505 : thread_join(worker-&gt;thread, &amp;retval);</span></a>
<a name="892"><span class="lineNum"> 892 </span> : }</a>
<a name="893"><span class="lineNum"> 893 </span><span class="lineCov"> 104 : }</span></a>
<a name="894"><span class="lineNum"> 894 </span> : </a>
<a name="895"><span class="lineNum"> 895 </span> : #endif</a>
<a name="896"><span class="lineNum"> 896 </span> : </a>
<a name="897"><span class="lineNum"> 897 </span> : /*****************************************************************************/</a>
<a name="898"><span class="lineNum"> 898 </span> : /* global */</a>
<a name="899"><span class="lineNum"> 899 </span> : </a>
<a name="900"><span class="lineNum"> 900 </span><span class="lineCov"> 106 : void io_init(struct snapraid_io* io, struct snapraid_state* state,</span></a>
<a name="901"><span class="lineNum"> 901 </span> : unsigned io_cache, unsigned buffer_max,</a>
<a name="902"><span class="lineNum"> 902 </span> : void (*data_reader)(struct snapraid_worker*, struct snapraid_task*),</a>
<a name="903"><span class="lineNum"> 903 </span> : struct snapraid_handle* handle_map, unsigned handle_max,</a>
<a name="904"><span class="lineNum"> 904 </span> : void (*parity_reader)(struct snapraid_worker*, struct snapraid_task*),</a>
<a name="905"><span class="lineNum"> 905 </span> : void (*parity_writer)(struct snapraid_worker*, struct snapraid_task*),</a>
<a name="906"><span class="lineNum"> 906 </span> : struct snapraid_parity_handle* parity_handle_map, unsigned parity_handle_max)</a>
<a name="907"><span class="lineNum"> 907 </span> : {</a>
<a name="908"><span class="lineNum"> 908 </span> : unsigned i;</a>
<a name="909"><span class="lineNum"> 909 </span> : size_t allocated_size;</a>
<a name="910"><span class="lineNum"> 910 </span><span class="lineCov"> 106 : size_t block_size = state-&gt;block_size;</span></a>
<a name="911"><span class="lineNum"> 911 </span> : </a>
<a name="912"><span class="lineNum"> 912 </span><span class="lineCov"> 106 : io-&gt;state = state;</span></a>
<a name="913"><span class="lineNum"> 913 </span> : </a>
<a name="914"><span class="lineNum"> 914 </span><span class="lineCov"> 106 : assert(buffer_max &gt;= handle_max + parity_handle_max);</span></a>
<a name="915"><span class="lineNum"> 915 </span> : </a>
<a name="916"><span class="lineNum"> 916 </span> : /* initialize bandwidth limiting */</a>
<a name="917"><span class="lineNum"> 917 </span><span class="lineCov"> 106 : bw_init(&amp;io-&gt;bw, state-&gt;opt.bwlimit);</span></a>
<a name="918"><span class="lineNum"> 918 </span> : </a>
<a name="919"><span class="lineNum"> 919 </span> : /* set IO context in handles */</a>
<a name="920"><span class="lineNum"> 920 </span><span class="lineCov"> 742 : for (i = 0; i &lt; handle_max; ++i)</span></a>
<a name="921"><span class="lineNum"> 921 </span><span class="lineCov"> 636 : handle_map[i].bw = &amp;io-&gt;bw;</span></a>
<a name="922"><span class="lineNum"> 922 </span><span class="lineCov"> 697 : for (i = 0; i &lt; parity_handle_max; ++i)</span></a>
<a name="923"><span class="lineNum"> 923 </span><span class="lineCov"> 591 : parity_handle_map[i].bw = &amp;io-&gt;bw;</span></a>
<a name="924"><span class="lineNum"> 924 </span> : </a>
<a name="925"><span class="lineNum"> 925 </span> : #if HAVE_THREAD</a>
<a name="926"><span class="lineNum"> 926 </span><span class="lineCov"> 106 : if (io_cache == 0) {</span></a>
<a name="927"><span class="lineNum"> 927 </span> : /* default is 16 MiB of cache */</a>
<a name="928"><span class="lineNum"> 928 </span> : /* this seems to be a good tradeoff between speed and memory usage */</a>
<a name="929"><span class="lineNum"> 929 </span><span class="lineCov"> 104 : io-&gt;io_max = 16 * 1024 * 1024 / state-&gt;block_size;</span></a>
<a name="930"><span class="lineNum"> 930 </span><span class="lineCov"> 104 : if (io-&gt;io_max &lt; IO_MIN)</span></a>
<a name="931"><span class="lineNum"> 931 </span><span class="lineNoCov"> 0 : io-&gt;io_max = IO_MIN;</span></a>
<a name="932"><span class="lineNum"> 932 </span><span class="lineCov"> 104 : if (io-&gt;io_max &gt; IO_MAX)</span></a>
<a name="933"><span class="lineNum"> 933 </span><span class="lineCov"> 104 : io-&gt;io_max = IO_MAX;</span></a>
<a name="934"><span class="lineNum"> 934 </span> : } else {</a>
<a name="935"><span class="lineNum"> 935 </span><span class="lineCov"> 2 : io-&gt;io_max = io_cache;</span></a>
<a name="936"><span class="lineNum"> 936 </span> : }</a>
<a name="937"><span class="lineNum"> 937 </span> : #else</a>
<a name="938"><span class="lineNum"> 938 </span> : (void)io_cache;</a>
<a name="939"><span class="lineNum"> 939 </span> : </a>
<a name="940"><span class="lineNum"> 940 </span> : /* without pthread force the mono thread mode */</a>
<a name="941"><span class="lineNum"> 941 </span> : io-&gt;io_max = 1;</a>
<a name="942"><span class="lineNum"> 942 </span> : #endif</a>
<a name="943"><span class="lineNum"> 943 </span> : </a>
<a name="944"><span class="lineNum"> 944 </span><span class="lineCov"> 106 : assert(io-&gt;io_max == 1 || (io-&gt;io_max &gt;= IO_MIN &amp;&amp; io-&gt;io_max &lt;= IO_MAX));</span></a>
<a name="945"><span class="lineNum"> 945 </span> : </a>
<a name="946"><span class="lineNum"> 946 </span><span class="lineCov"> 106 : io-&gt;buffer_max = buffer_max;</span></a>
<a name="947"><span class="lineNum"> 947 </span><span class="lineCov"> 106 : allocated_size = 0;</span></a>
<a name="948"><span class="lineNum"> 948 </span><span class="lineCov"> 13420 : for (i = 0; i &lt; io-&gt;io_max; ++i) {</span></a>
<a name="949"><span class="lineNum"> 949 </span><span class="lineCov"> 13314 : if (state-&gt;file_mode != ADVISE_DIRECT)</span></a>
<a name="950"><span class="lineNum"> 950 </span><span class="lineCov"> 13186 : io-&gt;buffer_map[i] = malloc_nofail_vector_align(handle_max, buffer_max, block_size, &amp;io-&gt;buffer_alloc_map[i]);</span></a>
<a name="951"><span class="lineNum"> 951 </span> : else</a>
<a name="952"><span class="lineNum"> 952 </span><span class="lineCov"> 128 : io-&gt;buffer_map[i] = malloc_nofail_vector_direct(handle_max, buffer_max, block_size, &amp;io-&gt;buffer_alloc_map[i]);</span></a>
<a name="953"><span class="lineNum"> 953 </span><span class="lineCov"> 13314 : if (!state-&gt;opt.skip_self)</span></a>
<a name="954"><span class="lineNum"> 954 </span><span class="lineNoCov"> 0 : mtest_vector(io-&gt;buffer_max, state-&gt;block_size, io-&gt;buffer_map[i]);</span></a>
<a name="955"><span class="lineNum"> 955 </span><span class="lineCov"> 13314 : allocated_size += block_size * buffer_max;</span></a>
<a name="956"><span class="lineNum"> 956 </span> : }</a>
<a name="957"><span class="lineNum"> 957 </span> : </a>
<a name="958"><span class="lineNum"> 958 </span><span class="lineCov"> 106 : msg_progress(&quot;Using %u MiB of memory for %u cached blocks.\n&quot;, (unsigned)(allocated_size / MEBI), io-&gt;io_max);</span></a>
<a name="959"><span class="lineNum"> 959 </span> : </a>
<a name="960"><span class="lineNum"> 960 </span><span class="lineCov"> 106 : if (parity_writer) {</span></a>
<a name="961"><span class="lineNum"> 961 </span><span class="lineCov"> 92 : io-&gt;reader_max = handle_max;</span></a>
<a name="962"><span class="lineNum"> 962 </span><span class="lineCov"> 92 : io-&gt;writer_max = parity_handle_max;</span></a>
<a name="963"><span class="lineNum"> 963 </span> : } else {</a>
<a name="964"><span class="lineNum"> 964 </span><span class="lineCov"> 14 : io-&gt;reader_max = handle_max + parity_handle_max;</span></a>
<a name="965"><span class="lineNum"> 965 </span><span class="lineCov"> 14 : io-&gt;writer_max = 0;</span></a>
<a name="966"><span class="lineNum"> 966 </span> : }</a>
<a name="967"><span class="lineNum"> 967 </span> : </a>
<a name="968"><span class="lineNum"> 968 </span><span class="lineCov"> 106 : io-&gt;reader_map = malloc_nofail(sizeof(struct snapraid_worker) * io-&gt;reader_max);</span></a>
<a name="969"><span class="lineNum"> 969 </span><span class="lineCov"> 106 : io-&gt;reader_list = malloc_nofail(io-&gt;reader_max + 1);</span></a>
<a name="970"><span class="lineNum"> 970 </span><span class="lineCov"> 106 : io-&gt;writer_map = malloc_nofail(sizeof(struct snapraid_worker) * io-&gt;writer_max);</span></a>
<a name="971"><span class="lineNum"> 971 </span><span class="lineCov"> 106 : io-&gt;writer_list = malloc_nofail(io-&gt;writer_max + 1);</span></a>
<a name="972"><span class="lineNum"> 972 </span> : </a>
<a name="973"><span class="lineNum"> 973 </span><span class="lineCov"> 106 : io-&gt;data_base = 0;</span></a>
<a name="974"><span class="lineNum"> 974 </span><span class="lineCov"> 106 : io-&gt;data_count = handle_max;</span></a>
<a name="975"><span class="lineNum"> 975 </span><span class="lineCov"> 106 : io-&gt;parity_base = handle_max;</span></a>
<a name="976"><span class="lineNum"> 976 </span><span class="lineCov"> 106 : io-&gt;parity_count = parity_handle_max;</span></a>
<a name="977"><span class="lineNum"> 977 </span> : </a>
<a name="978"><span class="lineNum"> 978 </span><span class="lineCov"> 826 : for (i = 0; i &lt; io-&gt;reader_max; ++i) {</span></a>
<a name="979"><span class="lineNum"> 979 </span><span class="lineCov"> 720 : struct snapraid_worker* worker = &amp;io-&gt;reader_map[i];</span></a>
<a name="980"><span class="lineNum"> 980 </span> : </a>
<a name="981"><span class="lineNum"> 981 </span><span class="lineCov"> 720 : worker-&gt;io = io;</span></a>
<a name="982"><span class="lineNum"> 982 </span> : </a>
<a name="983"><span class="lineNum"> 983 </span><span class="lineCov"> 720 : if (i &lt; handle_max) {</span></a>
<a name="984"><span class="lineNum"> 984 </span> : /* it's a data read */</a>
<a name="985"><span class="lineNum"> 985 </span><span class="lineCov"> 636 : worker-&gt;handle = &amp;handle_map[i];</span></a>
<a name="986"><span class="lineNum"> 986 </span><span class="lineCov"> 636 : worker-&gt;parity_handle = 0;</span></a>
<a name="987"><span class="lineNum"> 987 </span><span class="lineCov"> 636 : worker-&gt;func = data_reader;</span></a>
<a name="988"><span class="lineNum"> 988 </span> : </a>
<a name="989"><span class="lineNum"> 989 </span> : /* data read is put in lower buffer index */</a>
<a name="990"><span class="lineNum"> 990 </span><span class="lineCov"> 636 : worker-&gt;buffer_skew = 0;</span></a>
<a name="991"><span class="lineNum"> 991 </span> : } else {</a>
<a name="992"><span class="lineNum"> 992 </span> : /* it's a parity read */</a>
<a name="993"><span class="lineNum"> 993 </span><span class="lineCov"> 84 : worker-&gt;handle = 0;</span></a>
<a name="994"><span class="lineNum"> 994 </span><span class="lineCov"> 84 : worker-&gt;parity_handle = &amp;parity_handle_map[i - handle_max];</span></a>
<a name="995"><span class="lineNum"> 995 </span><span class="lineCov"> 84 : worker-&gt;func = parity_reader;</span></a>
<a name="996"><span class="lineNum"> 996 </span> : </a>
<a name="997"><span class="lineNum"> 997 </span> : /* parity read is put after data and computed parity */</a>
<a name="998"><span class="lineNum"> 998 </span><span class="lineCov"> 84 : worker-&gt;buffer_skew = parity_handle_max;</span></a>
<a name="999"><span class="lineNum"> 999 </span> : }</a>
<a name="1000"><span class="lineNum"> 1000 </span> : }</a>
<a name="1001"><span class="lineNum"> 1001 </span> : </a>
<a name="1002"><span class="lineNum"> 1002 </span><span class="lineCov"> 613 : for (i = 0; i &lt; io-&gt;writer_max; ++i) {</span></a>
<a name="1003"><span class="lineNum"> 1003 </span><span class="lineCov"> 507 : struct snapraid_worker* worker = &amp;io-&gt;writer_map[i];</span></a>
<a name="1004"><span class="lineNum"> 1004 </span> : </a>
<a name="1005"><span class="lineNum"> 1005 </span><span class="lineCov"> 507 : worker-&gt;io = io;</span></a>
<a name="1006"><span class="lineNum"> 1006 </span> : </a>
<a name="1007"><span class="lineNum"> 1007 </span> : /* it's a parity write */</a>
<a name="1008"><span class="lineNum"> 1008 </span><span class="lineCov"> 507 : worker-&gt;handle = 0;</span></a>
<a name="1009"><span class="lineNum"> 1009 </span><span class="lineCov"> 507 : worker-&gt;parity_handle = &amp;parity_handle_map[i];</span></a>
<a name="1010"><span class="lineNum"> 1010 </span><span class="lineCov"> 507 : worker-&gt;func = parity_writer;</span></a>
<a name="1011"><span class="lineNum"> 1011 </span> : </a>
<a name="1012"><span class="lineNum"> 1012 </span> : /* parity to write is put after data */</a>
<a name="1013"><span class="lineNum"> 1013 </span><span class="lineCov"> 507 : worker-&gt;buffer_skew = handle_max;</span></a>
<a name="1014"><span class="lineNum"> 1014 </span> : }</a>
<a name="1015"><span class="lineNum"> 1015 </span> : </a>
<a name="1016"><span class="lineNum"> 1016 </span> : #if HAVE_THREAD</a>
<a name="1017"><span class="lineNum"> 1017 </span><span class="lineCov"> 106 : if (io-&gt;io_max &gt; 1) {</span></a>
<a name="1018"><span class="lineNum"> 1018 </span><span class="lineCov"> 104 : io_read_next = io_read_next_thread;</span></a>
<a name="1019"><span class="lineNum"> 1019 </span><span class="lineCov"> 104 : io_write_preset = io_write_preset_thread;</span></a>
<a name="1020"><span class="lineNum"> 1020 </span><span class="lineCov"> 104 : io_write_next = io_write_next_thread;</span></a>
<a name="1021"><span class="lineNum"> 1021 </span><span class="lineCov"> 104 : io_refresh = io_refresh_thread;</span></a>
<a name="1022"><span class="lineNum"> 1022 </span><span class="lineCov"> 104 : io_flush = io_flush_thread;</span></a>
<a name="1023"><span class="lineNum"> 1023 </span><span class="lineCov"> 104 : io_data_read = io_data_read_thread;</span></a>
<a name="1024"><span class="lineNum"> 1024 </span><span class="lineCov"> 104 : io_parity_read = io_parity_read_thread;</span></a>
<a name="1025"><span class="lineNum"> 1025 </span><span class="lineCov"> 104 : io_parity_write = io_parity_write_thread;</span></a>
<a name="1026"><span class="lineNum"> 1026 </span><span class="lineCov"> 104 : io_start = io_start_thread;</span></a>
<a name="1027"><span class="lineNum"> 1027 </span><span class="lineCov"> 104 : io_stop = io_stop_thread;</span></a>
<a name="1028"><span class="lineNum"> 1028 </span> : </a>
<a name="1029"><span class="lineNum"> 1029 </span><span class="lineCov"> 104 : thread_mutex_init(&amp;io-&gt;io_mutex);</span></a>
<a name="1030"><span class="lineNum"> 1030 </span><span class="lineCov"> 104 : thread_cond_init(&amp;io-&gt;read_done);</span></a>
<a name="1031"><span class="lineNum"> 1031 </span><span class="lineCov"> 104 : thread_cond_init(&amp;io-&gt;read_sched);</span></a>
<a name="1032"><span class="lineNum"> 1032 </span><span class="lineCov"> 104 : thread_cond_init(&amp;io-&gt;write_done);</span></a>
<a name="1033"><span class="lineNum"> 1033 </span><span class="lineCov"> 104 : thread_cond_init(&amp;io-&gt;write_sched);</span></a>
<a name="1034"><span class="lineNum"> 1034 </span> : } else</a>
<a name="1035"><span class="lineNum"> 1035 </span> : #endif</a>
<a name="1036"><span class="lineNum"> 1036 </span> : {</a>
<a name="1037"><span class="lineNum"> 1037 </span><span class="lineCov"> 2 : io_read_next = io_read_next_mono;</span></a>
<a name="1038"><span class="lineNum"> 1038 </span><span class="lineCov"> 2 : io_write_preset = io_write_preset_mono;</span></a>
<a name="1039"><span class="lineNum"> 1039 </span><span class="lineCov"> 2 : io_write_next = io_write_next_mono;</span></a>
<a name="1040"><span class="lineNum"> 1040 </span><span class="lineCov"> 2 : io_refresh = io_refresh_mono;</span></a>
<a name="1041"><span class="lineNum"> 1041 </span><span class="lineCov"> 2 : io_flush = io_flush_mono;</span></a>
<a name="1042"><span class="lineNum"> 1042 </span><span class="lineCov"> 2 : io_data_read = io_data_read_mono;</span></a>
<a name="1043"><span class="lineNum"> 1043 </span><span class="lineCov"> 2 : io_parity_read = io_parity_read_mono;</span></a>
<a name="1044"><span class="lineNum"> 1044 </span><span class="lineCov"> 2 : io_parity_write = io_parity_write_mono;</span></a>
<a name="1045"><span class="lineNum"> 1045 </span><span class="lineCov"> 2 : io_start = io_start_mono;</span></a>
<a name="1046"><span class="lineNum"> 1046 </span><span class="lineCov"> 2 : io_stop = io_stop_mono;</span></a>
<a name="1047"><span class="lineNum"> 1047 </span> : }</a>
<a name="1048"><span class="lineNum"> 1048 </span><span class="lineCov"> 106 : }</span></a>
<a name="1049"><span class="lineNum"> 1049 </span> : </a>
<a name="1050"><span class="lineNum"> 1050 </span><span class="lineCov"> 106 : void io_done(struct snapraid_io* io)</span></a>
<a name="1051"><span class="lineNum"> 1051 </span> : {</a>
<a name="1052"><span class="lineNum"> 1052 </span> : unsigned i;</a>
<a name="1053"><span class="lineNum"> 1053 </span> : </a>
<a name="1054"><span class="lineNum"> 1054 </span><span class="lineCov"> 13420 : for (i = 0; i &lt; io-&gt;io_max; ++i) {</span></a>
<a name="1055"><span class="lineNum"> 1055 </span><span class="lineCov"> 13314 : free(io-&gt;buffer_map[i]);</span></a>
<a name="1056"><span class="lineNum"> 1056 </span><span class="lineCov"> 13314 : free(io-&gt;buffer_alloc_map[i]);</span></a>
<a name="1057"><span class="lineNum"> 1057 </span> : }</a>
<a name="1058"><span class="lineNum"> 1058 </span> : </a>
<a name="1059"><span class="lineNum"> 1059 </span><span class="lineCov"> 106 : free(io-&gt;reader_map);</span></a>
<a name="1060"><span class="lineNum"> 1060 </span><span class="lineCov"> 106 : free(io-&gt;reader_list);</span></a>
<a name="1061"><span class="lineNum"> 1061 </span><span class="lineCov"> 106 : free(io-&gt;writer_map);</span></a>
<a name="1062"><span class="lineNum"> 1062 </span><span class="lineCov"> 106 : free(io-&gt;writer_list);</span></a>
<a name="1063"><span class="lineNum"> 1063 </span> : </a>
<a name="1064"><span class="lineNum"> 1064 </span> : #if HAVE_THREAD</a>
<a name="1065"><span class="lineNum"> 1065 </span><span class="lineCov"> 106 : if (io-&gt;io_max &gt; 1) {</span></a>
<a name="1066"><span class="lineNum"> 1066 </span><span class="lineCov"> 104 : thread_mutex_destroy(&amp;io-&gt;io_mutex);</span></a>
<a name="1067"><span class="lineNum"> 1067 </span><span class="lineCov"> 104 : thread_cond_destroy(&amp;io-&gt;read_done);</span></a>
<a name="1068"><span class="lineNum"> 1068 </span><span class="lineCov"> 104 : thread_cond_destroy(&amp;io-&gt;read_sched);</span></a>
<a name="1069"><span class="lineNum"> 1069 </span><span class="lineCov"> 104 : thread_cond_destroy(&amp;io-&gt;write_done);</span></a>
<a name="1070"><span class="lineNum"> 1070 </span><span class="lineCov"> 104 : thread_cond_destroy(&amp;io-&gt;write_sched);</span></a>
<a name="1071"><span class="lineNum"> 1071 </span> : }</a>
<a name="1072"><span class="lineNum"> 1072 </span> : #endif</a>
<a name="1073"><span class="lineNum"> 1073 </span><span class="lineCov"> 106 : }</span></a>
<a name="1074"><span class="lineNum"> 1074 </span> : </a>
</pre>
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