snapraid/cov/cmdline/io.c.gcov.html
Andrea Mazzoleni e01ca1e0fa Auto update
2016-11-21 19:48:21 +01:00

1082 lines
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<title>LCOV - lcov.info - cmdline/io.c</title>
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<tr><td class="title">LCOV - code coverage report</td></tr>
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<td width="10%" class="headerItem">Current view:</td>
<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.html">functions</a>)</span></td>
<td width="5%"></td>
<td width="15%"></td>
<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>
<td></td>
<td class="headerItem">Lines:</td>
<td class="headerCovTableEntry">407</td>
<td class="headerCovTableEntry">417</td>
<td class="headerCovTableEntryHi">97.6 %</td>
</tr>
<tr>
<td class="headerItem">Date:</td>
<td class="headerValue">2016-11-21</td>
<td></td>
<td class="headerItem">Functions:</td>
<td class="headerCovTableEntry">29</td>
<td class="headerCovTableEntry">31</td>
<td class="headerCovTableEntryHi">93.5 %</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>
<span class="lineNum"> 2 </span> : * Copyright (C) 2016 Andrea Mazzoleni
<span class="lineNum"> 3 </span> : *
<span class="lineNum"> 4 </span> : * This program is free software: you can redistribute it and/or modify
<span class="lineNum"> 5 </span> : * it under the terms of the GNU General Public License as published by
<span class="lineNum"> 6 </span> : * the Free Software Foundation, either version 3 of the License, or
<span class="lineNum"> 7 </span> : * (at your option) any later version.
<span class="lineNum"> 8 </span> : *
<span class="lineNum"> 9 </span> : * This program is distributed in the hope that it will be useful,
<span class="lineNum"> 10 </span> : * but WITHOUT ANY WARRANTY; without even the implied warranty of
<span class="lineNum"> 11 </span> : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
<span class="lineNum"> 12 </span> : * GNU General Public License for more details.
<span class="lineNum"> 13 </span> : *
<span class="lineNum"> 14 </span> : * You should have received a copy of the GNU General Public License
<span class="lineNum"> 15 </span> : * along with this program. If not, see &lt;http://www.gnu.org/licenses/&gt;.
<span class="lineNum"> 16 </span> : */
<span class="lineNum"> 17 </span> :
<span class="lineNum"> 18 </span> : #include &quot;portable.h&quot;
<span class="lineNum"> 19 </span> :
<span class="lineNum"> 20 </span> : #include &quot;io.h&quot;
<span class="lineNum"> 21 </span> :
<span class="lineNum"> 22 </span> : /**
<a name="23"><span class="lineNum"> 23 </span> : * Get the next block position to process.</a>
<span class="lineNum"> 24 </span> : */
<span class="lineNum"> 25 </span><span class="lineCov"> 162024 : static block_off_t io_position_next(struct snapraid_io* io)</span>
<span class="lineNum"> 26 </span> : {
<span class="lineNum"> 27 </span> : block_off_t blockcur;
<span class="lineNum"> 28 </span> :
<span class="lineNum"> 29 </span> : /* get the next position */
<span class="lineNum"> 30 </span><span class="lineCov"> 647457 : while (io-&gt;block_next &lt; io-&gt;block_max &amp;&amp; !io-&gt;block_is_enabled(io-&gt;block_arg, io-&gt;block_next))</span>
<span class="lineNum"> 31 </span><span class="lineCov"> 323409 : ++io-&gt;block_next;</span>
<span class="lineNum"> 32 </span> :
<span class="lineNum"> 33 </span><span class="lineCov"> 162024 : blockcur = io-&gt;block_next;</span>
<span class="lineNum"> 34 </span> :
<span class="lineNum"> 35 </span> : /* next block for the next call */
<span class="lineNum"> 36 </span><span class="lineCov"> 162024 : ++io-&gt;block_next;</span>
<span class="lineNum"> 37 </span> :
<span class="lineNum"> 38 </span><span class="lineCov"> 162024 : return blockcur;</span>
<span class="lineNum"> 39 </span> : }
<span class="lineNum"> 40 </span> :
<span class="lineNum"> 41 </span> : /**
<a name="42"><span class="lineNum"> 42 </span> : * Setup the next pending task for all readers.</a>
<span class="lineNum"> 43 </span> : */
<span class="lineNum"> 44 </span><span class="lineCov"> 162024 : static void io_reader_sched(struct snapraid_io* io, int task_index, block_off_t blockcur)</span>
<span class="lineNum"> 45 </span> : {
<span class="lineNum"> 46 </span> : unsigned i;
<span class="lineNum"> 47 </span> :
<span class="lineNum"> 48 </span><span class="lineCov"> 1354956 : for (i = 0; i &lt; io-&gt;reader_max; ++i) {</span>
<span class="lineNum"> 49 </span><span class="lineCov"> 1192932 : struct snapraid_worker* worker = &amp;io-&gt;reader_map[i];</span>
<span class="lineNum"> 50 </span><span class="lineCov"> 1192932 : struct snapraid_task* task = &amp;worker-&gt;task_map[task_index];</span>
<span class="lineNum"> 51 </span> :
<span class="lineNum"> 52 </span> : /* setup the new pending task */
<span class="lineNum"> 53 </span><span class="lineCov"> 1192932 : if (blockcur &lt; io-&gt;block_max)</span>
<span class="lineNum"> 54 </span><span class="lineCov"> 1109982 : task-&gt;state = TASK_STATE_READY;</span>
<span class="lineNum"> 55 </span> : else
<span class="lineNum"> 56 </span><span class="lineCov"> 82950 : task-&gt;state = TASK_STATE_EMPTY;</span>
<span class="lineNum"> 57 </span> :
<span class="lineNum"> 58 </span><span class="lineCov"> 1192932 : task-&gt;path[0] = 0;</span>
<span class="lineNum"> 59 </span><span class="lineCov"> 1192932 : if (worker-&gt;handle)</span>
<span class="lineNum"> 60 </span><span class="lineCov"> 972144 : task-&gt;disk = worker-&gt;handle-&gt;disk;</span>
<span class="lineNum"> 61 </span> : else
<span class="lineNum"> 62 </span><span class="lineCov"> 220788 : task-&gt;disk = 0;</span>
<span class="lineNum"> 63 </span><span class="lineCov"> 1192932 : task-&gt;buffer = io-&gt;buffer_map[task_index][worker-&gt;buffer_skew + i];</span>
<span class="lineNum"> 64 </span><span class="lineCov"> 1192932 : task-&gt;position = blockcur;</span>
<span class="lineNum"> 65 </span><span class="lineCov"> 1192932 : task-&gt;block = 0;</span>
<span class="lineNum"> 66 </span><span class="lineCov"> 1192932 : task-&gt;file = 0;</span>
<span class="lineNum"> 67 </span><span class="lineCov"> 1192932 : task-&gt;file_pos = 0;</span>
<span class="lineNum"> 68 </span><span class="lineCov"> 1192932 : task-&gt;read_size = 0;</span>
<span class="lineNum"> 69 </span><span class="lineCov"> 1192932 : task-&gt;is_timestamp_different = 0;</span>
<span class="lineNum"> 70 </span> : }
<span class="lineNum"> 71 </span><span class="lineCov"> 162024 : }</span>
<span class="lineNum"> 72 </span> :
<span class="lineNum"> 73 </span> : /**
<a name="74"><span class="lineNum"> 74 </span> : * Setup the next pending task for all writers.</a>
<span class="lineNum"> 75 </span> : */
<span class="lineNum"> 76 </span><span class="lineCov"> 112438 : static void io_writer_sched(struct snapraid_io* io, int task_index, block_off_t blockcur)</span>
<span class="lineNum"> 77 </span> : {
<span class="lineNum"> 78 </span> : unsigned i;
<span class="lineNum"> 79 </span> :
<span class="lineNum"> 80 </span><span class="lineCov"> 656961 : for (i = 0; i &lt; io-&gt;writer_max; ++i) {</span>
<span class="lineNum"> 81 </span><span class="lineCov"> 544523 : struct snapraid_worker* worker = &amp;io-&gt;writer_map[i];</span>
<span class="lineNum"> 82 </span><span class="lineCov"> 544523 : struct snapraid_task* task = &amp;worker-&gt;task_map[task_index];</span>
<span class="lineNum"> 83 </span> :
<span class="lineNum"> 84 </span> : /* setup the new pending task */
<span class="lineNum"> 85 </span><span class="lineCov"> 544523 : task-&gt;state = TASK_STATE_READY;</span>
<span class="lineNum"> 86 </span><span class="lineCov"> 544523 : task-&gt;path[0] = 0;</span>
<span class="lineNum"> 87 </span><span class="lineCov"> 544523 : task-&gt;disk = 0;</span>
<span class="lineNum"> 88 </span><span class="lineCov"> 544523 : task-&gt;buffer = io-&gt;buffer_map[task_index][worker-&gt;buffer_skew + i];</span>
<span class="lineNum"> 89 </span><span class="lineCov"> 544523 : task-&gt;position = blockcur;</span>
<span class="lineNum"> 90 </span><span class="lineCov"> 544523 : task-&gt;block = 0;</span>
<span class="lineNum"> 91 </span><span class="lineCov"> 544523 : task-&gt;file = 0;</span>
<span class="lineNum"> 92 </span><span class="lineCov"> 544523 : task-&gt;file_pos = 0;</span>
<span class="lineNum"> 93 </span><span class="lineCov"> 544523 : task-&gt;read_size = 0;</span>
<span class="lineNum"> 94 </span><span class="lineCov"> 544523 : task-&gt;is_timestamp_different = 0;</span>
<span class="lineNum"> 95 </span> : }
<span class="lineNum"> 96 </span><span class="lineCov"> 112438 : }</span>
<span class="lineNum"> 97 </span> :
<span class="lineNum"> 98 </span> : /**
<a name="99"><span class="lineNum"> 99 </span> : * Setup an empty next pending task for all writers.</a>
<span class="lineNum"> 100 </span> : */
<span class="lineNum"> 101 </span><span class="lineCov"> 2291 : static void io_writer_sched_empty(struct snapraid_io* io, int task_index, block_off_t blockcur)</span>
<span class="lineNum"> 102 </span> : {
<span class="lineNum"> 103 </span> : unsigned i;
<span class="lineNum"> 104 </span> :
<span class="lineNum"> 105 </span><span class="lineCov"> 16037 : for (i = 0; i &lt; io-&gt;writer_max; ++i) {</span>
<span class="lineNum"> 106 </span><span class="lineCov"> 13746 : struct snapraid_worker* worker = &amp;io-&gt;writer_map[i];</span>
<span class="lineNum"> 107 </span><span class="lineCov"> 13746 : struct snapraid_task* task = &amp;worker-&gt;task_map[task_index];</span>
<span class="lineNum"> 108 </span> :
<span class="lineNum"> 109 </span> : /* setup the new pending task */
<span class="lineNum"> 110 </span><span class="lineCov"> 13746 : task-&gt;state = TASK_STATE_EMPTY;</span>
<span class="lineNum"> 111 </span><span class="lineCov"> 13746 : task-&gt;path[0] = 0;</span>
<span class="lineNum"> 112 </span><span class="lineCov"> 13746 : task-&gt;disk = 0;</span>
<span class="lineNum"> 113 </span><span class="lineCov"> 13746 : task-&gt;buffer = 0;</span>
<span class="lineNum"> 114 </span><span class="lineCov"> 13746 : task-&gt;position = blockcur;</span>
<span class="lineNum"> 115 </span><span class="lineCov"> 13746 : task-&gt;block = 0;</span>
<span class="lineNum"> 116 </span><span class="lineCov"> 13746 : task-&gt;file = 0;</span>
<span class="lineNum"> 117 </span><span class="lineCov"> 13746 : task-&gt;file_pos = 0;</span>
<span class="lineNum"> 118 </span><span class="lineCov"> 13746 : task-&gt;read_size = 0;</span>
<span class="lineNum"> 119 </span><span class="lineCov"> 13746 : task-&gt;is_timestamp_different = 0;</span>
<span class="lineNum"> 120 </span> : }
<span class="lineNum"> 121 </span><span class="lineCov"> 2291 : }</span>
<span class="lineNum"> 122 </span> :
<span class="lineNum"> 123 </span> : /*****************************************************************************/
<a name="124"><span class="lineNum"> 124 </span> : /* mono thread */</a>
<span class="lineNum"> 125 </span> :
<span class="lineNum"> 126 </span><span class="lineCov"> 4688 : static block_off_t io_read_next_mono(struct snapraid_io* io, void*** buffer)</span>
<span class="lineNum"> 127 </span> : {
<span class="lineNum"> 128 </span> : block_off_t blockcur_schedule;
<span class="lineNum"> 129 </span> :
<span class="lineNum"> 130 </span> : /* reset the index */
<span class="lineNum"> 131 </span><span class="lineCov"> 4688 : io-&gt;reader_index = 0;</span>
<span class="lineNum"> 132 </span> :
<span class="lineNum"> 133 </span><span class="lineCov"> 4688 : blockcur_schedule = io_position_next(io);</span>
<span class="lineNum"> 134 </span> :
<span class="lineNum"> 135 </span> : /* schedule the next read */
<span class="lineNum"> 136 </span><span class="lineCov"> 4688 : io_reader_sched(io, 0, blockcur_schedule);</span>
<span class="lineNum"> 137 </span> :
<span class="lineNum"> 138 </span> : /* set the buffer to use */
<span class="lineNum"> 139 </span><span class="lineCov"> 4688 : *buffer = io-&gt;buffer_map[0];</span>
<span class="lineNum"> 140 </span> :
<span class="lineNum"> 141 </span><span class="lineCov"> 4688 : return blockcur_schedule;</span>
<a name="142"><span class="lineNum"> 142 </span> : }</a>
<span class="lineNum"> 143 </span> :
<span class="lineNum"> 144 </span><span class="lineCov"> 4687 : static void io_write_preset_mono(struct snapraid_io* io, block_off_t blockcur, int skip)</span>
<span class="lineNum"> 145 </span> : {
<span class="lineNum"> 146 </span> : unsigned i;
<span class="lineNum"> 147 </span> :
<span class="lineNum"> 148 </span> : /* reset the index */
<span class="lineNum"> 149 </span><span class="lineCov"> 4687 : io-&gt;writer_index = 0;</span>
<span class="lineNum"> 150 </span> :
<span class="lineNum"> 151 </span> : /* clear errors */
<span class="lineNum"> 152 </span><span class="lineCov"> 23435 : for (i = 0; i &lt; IO_WRITER_ERROR_MAX; ++i)</span>
<span class="lineNum"> 153 </span><span class="lineCov"> 18748 : io-&gt;writer_error[i] = 0;</span>
<span class="lineNum"> 154 </span> :
<span class="lineNum"> 155 </span><span class="lineCov"> 4687 : if (skip) {</span>
<span class="lineNum"> 156 </span> : /* skip the next write */
<span class="lineNum"> 157 </span><span class="lineNoCov"> 0 : io_writer_sched_empty(io, 0, blockcur);</span>
<span class="lineNum"> 158 </span> : } else {
<span class="lineNum"> 159 </span> : /* schedule the next write */
<span class="lineNum"> 160 </span><span class="lineCov"> 4687 : io_writer_sched(io, 0, blockcur);</span>
<span class="lineNum"> 161 </span> : }
<a name="162"><span class="lineNum"> 162 </span><span class="lineCov"> 4687 : }</span></a>
<span class="lineNum"> 163 </span> :
<span class="lineNum"> 164 </span><span class="lineCov"> 4687 : static void io_write_next_mono(struct snapraid_io* io, block_off_t blockcur, int skip, int* writer_error)</span>
<span class="lineNum"> 165 </span> : {
<span class="lineNum"> 166 </span> : unsigned i;
<span class="lineNum"> 167 </span> :
<span class="lineNum"> 168 </span> : (void)blockcur;
<span class="lineNum"> 169 </span> : (void)skip;
<span class="lineNum"> 170 </span> :
<span class="lineNum"> 171 </span> : /* report errors */
<span class="lineNum"> 172 </span><span class="lineCov"> 23435 : for (i = 0; i &lt; IO_WRITER_ERROR_MAX; ++i)</span>
<span class="lineNum"> 173 </span><span class="lineCov"> 18748 : writer_error[i] = io-&gt;writer_error[i];</span>
<a name="174"><span class="lineNum"> 174 </span><span class="lineCov"> 4687 : }</span></a>
<span class="lineNum"> 175 </span> :
<span class="lineNum"> 176 </span><span class="lineNoCov"> 0 : static void io_refresh_mono(struct snapraid_io* io)</span>
<span class="lineNum"> 177 </span> : {
<span class="lineNum"> 178 </span> : (void)io;
<a name="179"><span class="lineNum"> 179 </span><span class="lineNoCov"> 0 : }</span></a>
<span class="lineNum"> 180 </span> :
<span class="lineNum"> 181 </span><span class="lineCov"> 28122 : 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>
<span class="lineNum"> 182 </span> : {
<span class="lineNum"> 183 </span> : struct snapraid_worker* worker;
<span class="lineNum"> 184 </span> : struct snapraid_task* task;
<span class="lineNum"> 185 </span> : unsigned i;
<span class="lineNum"> 186 </span> :
<span class="lineNum"> 187 </span> : /* get the next task */
<span class="lineNum"> 188 </span><span class="lineCov"> 28122 : i = io-&gt;reader_index++;</span>
<span class="lineNum"> 189 </span> :
<span class="lineNum"> 190 </span><span class="lineCov"> 28122 : assert(base &lt;= i &amp;&amp; i &lt; base + count);</span>
<span class="lineNum"> 191 </span> :
<span class="lineNum"> 192 </span><span class="lineCov"> 28122 : worker = &amp;io-&gt;reader_map[i];</span>
<span class="lineNum"> 193 </span><span class="lineCov"> 28122 : task = &amp;worker-&gt;task_map[0];</span>
<span class="lineNum"> 194 </span> :
<span class="lineNum"> 195 </span> : /* do the work */
<span class="lineNum"> 196 </span><span class="lineCov"> 28122 : if (task-&gt;state != TASK_STATE_EMPTY)</span>
<span class="lineNum"> 197 </span><span class="lineCov"> 28122 : worker-&gt;func(worker, task);</span>
<span class="lineNum"> 198 </span> :
<span class="lineNum"> 199 </span> : /* return the position */
<span class="lineNum"> 200 </span><span class="lineCov"> 28122 : *pos = i - base;</span>
<span class="lineNum"> 201 </span> :
<span class="lineNum"> 202 </span> : /* store the waiting index */
<span class="lineNum"> 203 </span><span class="lineCov"> 28122 : waiting_map[0] = i - base;</span>
<span class="lineNum"> 204 </span><span class="lineCov"> 28122 : *waiting_mac = 1;</span>
<span class="lineNum"> 205 </span> :
<span class="lineNum"> 206 </span><span class="lineCov"> 28122 : return task;</span>
<a name="207"><span class="lineNum"> 207 </span> : }</a>
<span class="lineNum"> 208 </span> :
<span class="lineNum"> 209 </span><span class="lineCov"> 28122 : static struct snapraid_task* io_data_read_mono(struct snapraid_io* io, unsigned* pos, unsigned* waiting_map, unsigned* waiting_mac)</span>
<span class="lineNum"> 210 </span> : {
<span class="lineNum"> 211 </span><span class="lineCov"> 28122 : return io_task_read_mono(io, io-&gt;data_base, io-&gt;data_count, pos, waiting_map, waiting_mac);</span>
<a name="212"><span class="lineNum"> 212 </span> : }</a>
<span class="lineNum"> 213 </span> :
<span class="lineNum"> 214 </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>
<span class="lineNum"> 215 </span> : {
<span class="lineNum"> 216 </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 name="217"><span class="lineNum"> 217 </span> : }</a>
<span class="lineNum"> 218 </span> :
<span class="lineNum"> 219 </span><span class="lineCov"> 4687 : static void io_parity_write_mono(struct snapraid_io* io, unsigned* pos, unsigned* waiting_map, unsigned* waiting_mac)</span>
<span class="lineNum"> 220 </span> : {
<span class="lineNum"> 221 </span> : struct snapraid_worker* worker;
<span class="lineNum"> 222 </span> : struct snapraid_task* task;
<span class="lineNum"> 223 </span> : unsigned i;
<span class="lineNum"> 224 </span> :
<span class="lineNum"> 225 </span> : /* get the next task */
<span class="lineNum"> 226 </span><span class="lineCov"> 4687 : i = io-&gt;writer_index++;</span>
<span class="lineNum"> 227 </span> :
<span class="lineNum"> 228 </span><span class="lineCov"> 4687 : worker = &amp;io-&gt;writer_map[i];</span>
<span class="lineNum"> 229 </span><span class="lineCov"> 4687 : task = &amp;worker-&gt;task_map[0];</span>
<span class="lineNum"> 230 </span> :
<span class="lineNum"> 231 </span><span class="lineCov"> 4687 : io-&gt;writer_error[i] = 0;</span>
<span class="lineNum"> 232 </span> :
<span class="lineNum"> 233 </span> : /* do the work */
<span class="lineNum"> 234 </span><span class="lineCov"> 4687 : if (task-&gt;state != TASK_STATE_EMPTY)</span>
<span class="lineNum"> 235 </span><span class="lineCov"> 4687 : worker-&gt;func(worker, task);</span>
<span class="lineNum"> 236 </span> :
<span class="lineNum"> 237 </span> : /* return the position */
<span class="lineNum"> 238 </span><span class="lineCov"> 4687 : *pos = i;</span>
<span class="lineNum"> 239 </span> :
<span class="lineNum"> 240 </span> : /* store the waiting index */
<span class="lineNum"> 241 </span><span class="lineCov"> 4687 : waiting_map[0] = i;</span>
<span class="lineNum"> 242 </span><span class="lineCov"> 4687 : *waiting_mac = 1;</span>
<a name="243"><span class="lineNum"> 243 </span><span class="lineCov"> 4687 : }</span></a>
<span class="lineNum"> 244 </span> :
<span class="lineNum"> 245 </span><span class="lineCov"> 1 : static void io_start_mono(struct snapraid_io* io,</span>
<span class="lineNum"> 246 </span> : block_off_t blockstart, block_off_t blockmax,
<span class="lineNum"> 247 </span> : int (*block_is_enabled)(void* arg, block_off_t), void* blockarg)
<span class="lineNum"> 248 </span> : {
<span class="lineNum"> 249 </span><span class="lineCov"> 1 : io-&gt;block_start = blockstart;</span>
<span class="lineNum"> 250 </span><span class="lineCov"> 1 : io-&gt;block_max = blockmax;</span>
<span class="lineNum"> 251 </span><span class="lineCov"> 1 : io-&gt;block_is_enabled = block_is_enabled;</span>
<span class="lineNum"> 252 </span><span class="lineCov"> 1 : io-&gt;block_arg = blockarg;</span>
<span class="lineNum"> 253 </span><span class="lineCov"> 1 : io-&gt;block_next = blockstart;</span>
<a name="254"><span class="lineNum"> 254 </span><span class="lineCov"> 1 : }</span></a>
<span class="lineNum"> 255 </span> :
<span class="lineNum"> 256 </span><span class="lineCov"> 1 : static void io_stop_mono(struct snapraid_io* io)</span>
<span class="lineNum"> 257 </span> : {
<span class="lineNum"> 258 </span> : (void)io;
<span class="lineNum"> 259 </span><span class="lineCov"> 1 : }</span>
<span class="lineNum"> 260 </span> :
<span class="lineNum"> 261 </span> : /*****************************************************************************/
<span class="lineNum"> 262 </span> : /* multi thread */
<span class="lineNum"> 263 </span> :
<span class="lineNum"> 264 </span> : /* disable multithread if pthread is not present */
<span class="lineNum"> 265 </span> : #if HAVE_PTHREAD
<span class="lineNum"> 266 </span> :
<span class="lineNum"> 267 </span> : /**
<span class="lineNum"> 268 </span> : * Get the next task to work on for a reader.
<span class="lineNum"> 269 </span> : *
<a name="270"><span class="lineNum"> 270 </span> : * This is the synchronization point for workers with the io.</a>
<span class="lineNum"> 271 </span> : */
<span class="lineNum"> 272 </span><span class="lineCov"> 1162708 : static struct snapraid_task* io_reader_step(struct snapraid_worker* worker)</span>
<span class="lineNum"> 273 </span> : {
<span class="lineNum"> 274 </span><span class="lineCov"> 1162708 : struct snapraid_io* io = worker-&gt;io;</span>
<span class="lineNum"> 275 </span> :
<span class="lineNum"> 276 </span> : /* the synchronization is protected by the io mutex */
<span class="lineNum"> 277 </span><span class="lineCov"> 1162708 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 278 </span> :
<span class="lineNum"> 279 </span> : while (1) {
<span class="lineNum"> 280 </span> : unsigned next_index;
<span class="lineNum"> 281 </span> :
<span class="lineNum"> 282 </span> : /* check if the worker has to exit */
<span class="lineNum"> 283 </span> : /* even if there is work to do */
<span class="lineNum"> 284 </span><span class="lineCov"> 2057573 : if (io-&gt;done) {</span>
<span class="lineNum"> 285 </span><span class="lineCov"> 648 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 286 </span><span class="lineCov"> 648 : return 0;</span>
<span class="lineNum"> 287 </span> : }
<span class="lineNum"> 288 </span> :
<span class="lineNum"> 289 </span> : /* get the next pending task */
<span class="lineNum"> 290 </span><span class="lineCov"> 2056925 : next_index = (worker-&gt;index + 1) % io-&gt;io_max;</span>
<span class="lineNum"> 291 </span> :
<span class="lineNum"> 292 </span> : /* if the queue of pending tasks is not empty */
<span class="lineNum"> 293 </span><span class="lineCov"> 2056925 : if (next_index != io-&gt;reader_index) {</span>
<span class="lineNum"> 294 </span> : struct snapraid_task* task;
<span class="lineNum"> 295 </span> :
<span class="lineNum"> 296 </span> : /* the index that the IO may be waiting for */
<span class="lineNum"> 297 </span><span class="lineCov"> 1162618 : unsigned waiting_index = io-&gt;reader_index;</span>
<span class="lineNum"> 298 </span> :
<span class="lineNum"> 299 </span> : /* the index that worker just completed */
<span class="lineNum"> 300 </span><span class="lineCov"> 1162618 : unsigned done_index = worker-&gt;index;</span>
<span class="lineNum"> 301 </span> :
<span class="lineNum"> 302 </span> : /* get the new working task */
<span class="lineNum"> 303 </span><span class="lineCov"> 1162618 : worker-&gt;index = next_index;</span>
<span class="lineNum"> 304 </span><span class="lineCov"> 1162618 : task = &amp;worker-&gt;task_map[worker-&gt;index];</span>
<span class="lineNum"> 305 </span> :
<span class="lineNum"> 306 </span> : /* if the just completed task is at this index */
<span class="lineNum"> 307 </span><span class="lineCov"> 1162618 : if (done_index == waiting_index) {</span>
<span class="lineNum"> 308 </span> : /* notify the IO that a new read is complete */
<span class="lineNum"> 309 </span><span class="lineCov"> 2747 : thread_cond_signal_and_unlock(&amp;io-&gt;read_done, &amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 310 </span> : } else {
<span class="lineNum"> 311 </span><span class="lineCov"> 1159871 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 312 </span> : }
<span class="lineNum"> 313 </span> :
<span class="lineNum"> 314 </span> : /* return the new task */
<span class="lineNum"> 315 </span><span class="lineCov"> 1162520 : return task;</span>
<span class="lineNum"> 316 </span> : }
<span class="lineNum"> 317 </span> :
<span class="lineNum"> 318 </span> : /* otherwise wait for a read_sched event */
<span class="lineNum"> 319 </span><span class="lineCov"> 894307 : thread_cond_wait(&amp;io-&gt;read_sched, &amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 320 </span><span class="lineCov"> 894307 : }</span>
<span class="lineNum"> 321 </span> : }
<span class="lineNum"> 322 </span> :
<span class="lineNum"> 323 </span> : /**
<span class="lineNum"> 324 </span> : * Get the next task to work on for a writer.
<span class="lineNum"> 325 </span> : *
<a name="326"><span class="lineNum"> 326 </span> : * This is the synchronization point for workers with the io.</a>
<span class="lineNum"> 327 </span> : */
<span class="lineNum"> 328 </span><span class="lineCov"> 554042 : static struct snapraid_task* io_writer_step(struct snapraid_worker* worker, int state)</span>
<span class="lineNum"> 329 </span> : {
<span class="lineNum"> 330 </span><span class="lineCov"> 554042 : struct snapraid_io* io = worker-&gt;io;</span>
<span class="lineNum"> 331 </span> : int error_index;
<span class="lineNum"> 332 </span> :
<span class="lineNum"> 333 </span> : /* the synchronization is protected by the io mutex */
<span class="lineNum"> 334 </span><span class="lineCov"> 554042 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 335 </span> :
<span class="lineNum"> 336 </span> : /* counts the number of errors in the global state */
<span class="lineNum"> 337 </span><span class="lineCov"> 554044 : error_index = state - IO_WRITER_ERROR_BASE;</span>
<span class="lineNum"> 338 </span><span class="lineCov"> 554044 : if (error_index &gt;= 0 &amp;&amp; error_index &lt; IO_WRITER_ERROR_MAX)</span>
<span class="lineNum"> 339 </span><span class="lineNoCov"> 0 : ++io-&gt;writer_error[error_index];</span>
<span class="lineNum"> 340 </span> :
<span class="lineNum"> 341 </span> : while (1) {
<span class="lineNum"> 342 </span> : unsigned next_index;
<span class="lineNum"> 343 </span> :
<span class="lineNum"> 344 </span> : /* get the next pending task */
<span class="lineNum"> 345 </span><span class="lineCov"> 625754 : next_index = (worker-&gt;index + 1) % io-&gt;io_max;</span>
<span class="lineNum"> 346 </span> :
<span class="lineNum"> 347 </span> : /* if the queue of pending tasks is not empty */
<span class="lineNum"> 348 </span><span class="lineCov"> 625754 : if (next_index != io-&gt;writer_index) {</span>
<span class="lineNum"> 349 </span> : struct snapraid_task* task;
<span class="lineNum"> 350 </span> :
<span class="lineNum"> 351 </span> : /* the index that the IO may be waiting for */
<span class="lineNum"> 352 </span><span class="lineCov"> 553582 : unsigned waiting_index = (io-&gt;writer_index + 1) % io-&gt;io_max;</span>
<span class="lineNum"> 353 </span> :
<span class="lineNum"> 354 </span> : /* the index that worker just completed */
<span class="lineNum"> 355 </span><span class="lineCov"> 553582 : unsigned done_index = worker-&gt;index;</span>
<span class="lineNum"> 356 </span> :
<span class="lineNum"> 357 </span> : /* get the new working task */
<span class="lineNum"> 358 </span><span class="lineCov"> 553582 : worker-&gt;index = next_index;</span>
<span class="lineNum"> 359 </span><span class="lineCov"> 553582 : task = &amp;worker-&gt;task_map[worker-&gt;index];</span>
<span class="lineNum"> 360 </span> :
<span class="lineNum"> 361 </span> : /* if the just completed task is at this index */
<span class="lineNum"> 362 </span><span class="lineCov"> 553582 : if (done_index == waiting_index) {</span>
<span class="lineNum"> 363 </span> : /* notify the IO that a new write is complete */
<span class="lineNum"> 364 </span><span class="lineCov"> 83140 : thread_cond_signal_and_unlock(&amp;io-&gt;write_done, &amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 365 </span> : } else {
<span class="lineNum"> 366 </span><span class="lineCov"> 470442 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 367 </span> : }
<span class="lineNum"> 368 </span> :
<span class="lineNum"> 369 </span> : /* return the new task */
<span class="lineNum"> 370 </span><span class="lineCov"> 553581 : return task;</span>
<span class="lineNum"> 371 </span> : }
<span class="lineNum"> 372 </span> :
<span class="lineNum"> 373 </span> : /* check if the worker has to exit */
<span class="lineNum"> 374 </span> : /* but only if there is no work to do */
<span class="lineNum"> 375 </span><span class="lineCov"> 72172 : if (io-&gt;done) {</span>
<span class="lineNum"> 376 </span><span class="lineCov"> 462 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 377 </span><span class="lineCov"> 462 : return 0;</span>
<span class="lineNum"> 378 </span> : }
<span class="lineNum"> 379 </span> :
<span class="lineNum"> 380 </span> : /* otherwise wait for a write_sched event */
<span class="lineNum"> 381 </span><span class="lineCov"> 71710 : thread_cond_wait(&amp;io-&gt;write_sched, &amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 382 </span><span class="lineCov"> 71710 : }</span>
<span class="lineNum"> 383 </span> : }
<span class="lineNum"> 384 </span> :
<span class="lineNum"> 385 </span> : /**
<span class="lineNum"> 386 </span> : * Get the next block position to operate on.
<span class="lineNum"> 387 </span> : *
<a name="388"><span class="lineNum"> 388 </span> : * This is the synchronization point for workers with the io.</a>
<span class="lineNum"> 389 </span> : */
<span class="lineNum"> 390 </span><span class="lineCov"> 145271 : static block_off_t io_read_next_thread(struct snapraid_io* io, void*** buffer)</span>
<span class="lineNum"> 391 </span> : {
<span class="lineNum"> 392 </span> : block_off_t blockcur_schedule;
<span class="lineNum"> 393 </span> : block_off_t blockcur_caller;
<span class="lineNum"> 394 </span> : unsigned i;
<span class="lineNum"> 395 </span> :
<span class="lineNum"> 396 </span> : /* get the next parity position to process */
<span class="lineNum"> 397 </span><span class="lineCov"> 145271 : blockcur_schedule = io_position_next(io);</span>
<span class="lineNum"> 398 </span> :
<span class="lineNum"> 399 </span> : /* ensure that all data/parity was read */
<span class="lineNum"> 400 </span><span class="lineCov"> 145271 : assert(io-&gt;reader_list[0] == io-&gt;reader_max);</span>
<span class="lineNum"> 401 </span> :
<span class="lineNum"> 402 </span> : /* setup the list of workers to process */
<span class="lineNum"> 403 </span><span class="lineCov"> 1373050 : for (i = 0; i &lt;= io-&gt;reader_max; ++i)</span>
<span class="lineNum"> 404 </span><span class="lineCov"> 1227779 : io-&gt;reader_list[i] = i;</span>
<span class="lineNum"> 405 </span> :
<span class="lineNum"> 406 </span> : /* the synchronization is protected by the io mutex */
<span class="lineNum"> 407 </span><span class="lineCov"> 145271 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 408 </span> :
<span class="lineNum"> 409 </span> : /* schedule the next read */
<span class="lineNum"> 410 </span><span class="lineCov"> 145271 : io_reader_sched(io, io-&gt;reader_index, blockcur_schedule);</span>
<span class="lineNum"> 411 </span> :
<span class="lineNum"> 412 </span> : /* set the index for the tasks to return to the caller */
<span class="lineNum"> 413 </span><span class="lineCov"> 145271 : io-&gt;reader_index = (io-&gt;reader_index + 1) % io-&gt;io_max;</span>
<span class="lineNum"> 414 </span> :
<span class="lineNum"> 415 </span> : /* get the position to operate at high level from one task */
<span class="lineNum"> 416 </span><span class="lineCov"> 145271 : blockcur_caller = io-&gt;reader_map[0].task_map[io-&gt;reader_index].position;</span>
<span class="lineNum"> 417 </span> :
<span class="lineNum"> 418 </span> : /* set the buffer to use */
<span class="lineNum"> 419 </span><span class="lineCov"> 145271 : *buffer = io-&gt;buffer_map[io-&gt;reader_index];</span>
<span class="lineNum"> 420 </span> :
<span class="lineNum"> 421 </span> : /* signal all the workers that there is a new pending task */
<span class="lineNum"> 422 </span><span class="lineCov"> 145271 : thread_cond_broadcast_and_unlock(&amp;io-&gt;read_sched, &amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 423 </span> :
<span class="lineNum"> 424 </span><span class="lineCov"> 145271 : return blockcur_caller;</span>
<a name="425"><span class="lineNum"> 425 </span> : }</a>
<span class="lineNum"> 426 </span> :
<span class="lineNum"> 427 </span><span class="lineCov"> 110042 : static void io_write_preset_thread(struct snapraid_io* io, block_off_t blockcur, int skip)</span>
<span class="lineNum"> 428 </span> : {
<span class="lineNum"> 429 </span> : (void)io;
<span class="lineNum"> 430 </span> : (void)blockcur;
<span class="lineNum"> 431 </span> : (void)skip;
<a name="432"><span class="lineNum"> 432 </span><span class="lineCov"> 110042 : }</span></a>
<span class="lineNum"> 433 </span> :
<span class="lineNum"> 434 </span><span class="lineCov"> 110042 : static void io_write_next_thread(struct snapraid_io* io, block_off_t blockcur, int skip, int* writer_error)</span>
<span class="lineNum"> 435 </span> : {
<span class="lineNum"> 436 </span> : unsigned i;
<span class="lineNum"> 437 </span> :
<span class="lineNum"> 438 </span> : /* ensure that all parity was written */
<span class="lineNum"> 439 </span><span class="lineCov"> 110042 : assert(io-&gt;writer_list[0] == io-&gt;writer_max);</span>
<span class="lineNum"> 440 </span> :
<span class="lineNum"> 441 </span> : /* setup the list of workers to process */
<span class="lineNum"> 442 </span><span class="lineCov"> 773666 : for (i = 0; i &lt;= io-&gt;writer_max; ++i)</span>
<span class="lineNum"> 443 </span><span class="lineCov"> 663624 : io-&gt;writer_list[i] = i;</span>
<span class="lineNum"> 444 </span> :
<span class="lineNum"> 445 </span> : /* the synchronization is protected by the io mutex */
<span class="lineNum"> 446 </span><span class="lineCov"> 110042 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 447 </span> :
<span class="lineNum"> 448 </span> : /* report errors */
<span class="lineNum"> 449 </span><span class="lineCov"> 550210 : for (i = 0; i &lt; IO_WRITER_ERROR_MAX; ++i) {</span>
<span class="lineNum"> 450 </span><span class="lineCov"> 440168 : writer_error[i] = io-&gt;writer_error[i];</span>
<span class="lineNum"> 451 </span><span class="lineCov"> 440168 : io-&gt;writer_error[i] = 0;</span>
<span class="lineNum"> 452 </span> : }
<span class="lineNum"> 453 </span> :
<span class="lineNum"> 454 </span><span class="lineCov"> 110042 : if (skip) {</span>
<span class="lineNum"> 455 </span> : /* skip the next write */
<span class="lineNum"> 456 </span><span class="lineCov"> 2291 : io_writer_sched_empty(io, io-&gt;writer_index, blockcur);</span>
<span class="lineNum"> 457 </span> : } else {
<span class="lineNum"> 458 </span> : /* schedule the next write */
<span class="lineNum"> 459 </span><span class="lineCov"> 107751 : io_writer_sched(io, io-&gt;writer_index, blockcur);</span>
<span class="lineNum"> 460 </span> : }
<span class="lineNum"> 461 </span> :
<span class="lineNum"> 462 </span> : /* at this point the writers must be in sync with the readers */
<span class="lineNum"> 463 </span><span class="lineCov"> 110042 : assert(io-&gt;writer_index == io-&gt;reader_index);</span>
<span class="lineNum"> 464 </span> :
<span class="lineNum"> 465 </span> : /* set the index to be used for the next write */
<span class="lineNum"> 466 </span><span class="lineCov"> 110042 : io-&gt;writer_index = (io-&gt;writer_index + 1) % io-&gt;io_max;</span>
<span class="lineNum"> 467 </span> :
<span class="lineNum"> 468 </span> : /* signal all the workers that there is a new pending task */
<span class="lineNum"> 469 </span><span class="lineCov"> 110042 : thread_cond_broadcast_and_unlock(&amp;io-&gt;write_sched, &amp;io-&gt;io_mutex);</span>
<a name="470"><span class="lineNum"> 470 </span><span class="lineCov"> 110042 : }</span></a>
<span class="lineNum"> 471 </span> :
<span class="lineNum"> 472 </span><span class="lineCov"> 1 : static void io_refresh_thread(struct snapraid_io* io)</span>
<span class="lineNum"> 473 </span> : {
<span class="lineNum"> 474 </span> : unsigned i;
<span class="lineNum"> 475 </span> :
<span class="lineNum"> 476 </span> : /* the synchronization is protected by the io mutex */
<span class="lineNum"> 477 </span><span class="lineCov"> 1 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 478 </span> :
<span class="lineNum"> 479 </span> : /* for all readers, count the number of read blocks */
<span class="lineNum"> 480 </span><span class="lineCov"> 7 : for (i = 0; i &lt; io-&gt;reader_max; ++i) {</span>
<span class="lineNum"> 481 </span> : unsigned begin, end, cached;
<span class="lineNum"> 482 </span><span class="lineCov"> 6 : struct snapraid_worker* worker = &amp;io-&gt;reader_map[i];</span>
<span class="lineNum"> 483 </span> :
<span class="lineNum"> 484 </span> : /* the first block read */
<span class="lineNum"> 485 </span><span class="lineCov"> 6 : begin = io-&gt;reader_index + 1;</span>
<span class="lineNum"> 486 </span> : /* the block in reading */
<span class="lineNum"> 487 </span><span class="lineCov"> 6 : end = worker-&gt;index;</span>
<span class="lineNum"> 488 </span><span class="lineCov"> 6 : if (begin &gt; end)</span>
<span class="lineNum"> 489 </span><span class="lineCov"> 6 : end += io-&gt;io_max;</span>
<span class="lineNum"> 490 </span><span class="lineCov"> 6 : cached = end - begin;</span>
<span class="lineNum"> 491 </span> :
<span class="lineNum"> 492 </span><span class="lineCov"> 6 : if (worker-&gt;parity_handle)</span>
<span class="lineNum"> 493 </span><span class="lineNoCov"> 0 : io-&gt;state-&gt;parity[worker-&gt;parity_handle-&gt;level].cached = cached;</span>
<span class="lineNum"> 494 </span> : else
<span class="lineNum"> 495 </span><span class="lineCov"> 6 : worker-&gt;handle-&gt;disk-&gt;cached = cached;</span>
<span class="lineNum"> 496 </span> : }
<span class="lineNum"> 497 </span> :
<span class="lineNum"> 498 </span> : /* for all writers, count the number of written blocks */
<span class="lineNum"> 499 </span> : /* note that this is a kind of &quot;opposite&quot; of cached blocks */
<span class="lineNum"> 500 </span><span class="lineCov"> 2 : for (i = 0; i &lt; io-&gt;writer_max; ++i) {</span>
<span class="lineNum"> 501 </span> : unsigned begin, end, cached;
<span class="lineNum"> 502 </span><span class="lineCov"> 1 : struct snapraid_worker* worker = &amp;io-&gt;writer_map[i];</span>
<span class="lineNum"> 503 </span> :
<span class="lineNum"> 504 </span> : /* the first block written */
<span class="lineNum"> 505 </span><span class="lineCov"> 1 : begin = io-&gt;writer_index + 1;</span>
<span class="lineNum"> 506 </span> : /* the block in writing */
<span class="lineNum"> 507 </span><span class="lineCov"> 1 : end = worker-&gt;index;</span>
<span class="lineNum"> 508 </span><span class="lineCov"> 1 : if (begin &gt; end)</span>
<span class="lineNum"> 509 </span><span class="lineCov"> 1 : end += io-&gt;io_max;</span>
<span class="lineNum"> 510 </span><span class="lineCov"> 1 : cached = end - begin;</span>
<span class="lineNum"> 511 </span> :
<span class="lineNum"> 512 </span><span class="lineCov"> 1 : io-&gt;state-&gt;parity[worker-&gt;parity_handle-&gt;level].cached = cached;</span>
<span class="lineNum"> 513 </span> : }
<span class="lineNum"> 514 </span> :
<span class="lineNum"> 515 </span><span class="lineCov"> 1 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span>
<a name="516"><span class="lineNum"> 516 </span><span class="lineCov"> 1 : }</span></a>
<span class="lineNum"> 517 </span> :
<span class="lineNum"> 518 </span><span class="lineCov"> 1081860 : 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>
<span class="lineNum"> 519 </span> : {
<span class="lineNum"> 520 </span> : unsigned waiting_cycle;
<span class="lineNum"> 521 </span> :
<span class="lineNum"> 522 </span> : /* count the waiting cycle */
<span class="lineNum"> 523 </span><span class="lineCov"> 1081860 : waiting_cycle = 0;</span>
<span class="lineNum"> 524 </span> :
<span class="lineNum"> 525 </span> : /* clear the waiting indexes */
<span class="lineNum"> 526 </span><span class="lineCov"> 1081860 : *waiting_mac = 0;</span>
<span class="lineNum"> 527 </span> :
<span class="lineNum"> 528 </span> : /* the synchronization is protected by the io mutex */
<span class="lineNum"> 529 </span><span class="lineCov"> 1081860 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 530 </span> :
<span class="lineNum"> 531 </span> : while (1) {
<span class="lineNum"> 532 </span> : unsigned char* let;
<span class="lineNum"> 533 </span> : unsigned busy_index;
<span class="lineNum"> 534 </span> :
<span class="lineNum"> 535 </span> : /* get the index the IO is using */
<span class="lineNum"> 536 </span> : /* we must ensure that this index has not a read in progress */
<span class="lineNum"> 537 </span> : /* to avoid a concurrent access */
<span class="lineNum"> 538 </span><span class="lineCov"> 1084465 : busy_index = io-&gt;reader_index;</span>
<span class="lineNum"> 539 </span> :
<span class="lineNum"> 540 </span> : /* search for a worker that has already finished */
<span class="lineNum"> 541 </span><span class="lineCov"> 1084465 : let = &amp;io-&gt;reader_list[0];</span>
<span class="lineNum"> 542 </span> : while (1) {
<span class="lineNum"> 543 </span><span class="lineCov"> 1097188 : unsigned i = *let;</span>
<span class="lineNum"> 544 </span> :
<span class="lineNum"> 545 </span> : /* if we are at the end */
<span class="lineNum"> 546 </span><span class="lineCov"> 1097188 : if (i == io-&gt;reader_max)</span>
<span class="lineNum"> 547 </span><span class="lineCov"> 2605 : break;</span>
<span class="lineNum"> 548 </span> :
<span class="lineNum"> 549 </span> : /* if it's in range */
<span class="lineNum"> 550 </span><span class="lineCov"> 1094583 : if (base &lt;= i &amp;&amp; i &lt; base + count) {</span>
<span class="lineNum"> 551 </span> : struct snapraid_worker* worker;
<span class="lineNum"> 552 </span> :
<span class="lineNum"> 553 </span> : /* if it's the first cycle */
<span class="lineNum"> 554 </span><span class="lineCov"> 1092105 : if (waiting_cycle == 0) {</span>
<span class="lineNum"> 555 </span> : /* store the waiting indexes */
<span class="lineNum"> 556 </span><span class="lineCov"> 1088986 : waiting_map[(*waiting_mac)++] = i - base;</span>
<span class="lineNum"> 557 </span> : }
<span class="lineNum"> 558 </span> :
<span class="lineNum"> 559 </span><span class="lineCov"> 1092105 : worker = &amp;io-&gt;reader_map[i];</span>
<span class="lineNum"> 560 </span> :
<span class="lineNum"> 561 </span> : /* if the worker has finished this index */
<span class="lineNum"> 562 </span><span class="lineCov"> 1092105 : if (busy_index != worker-&gt;index) {</span>
<span class="lineNum"> 563 </span> : struct snapraid_task* task;
<span class="lineNum"> 564 </span> :
<span class="lineNum"> 565 </span><span class="lineCov"> 1081860 : task = &amp;worker-&gt;task_map[io-&gt;reader_index];</span>
<span class="lineNum"> 566 </span> :
<span class="lineNum"> 567 </span><span class="lineCov"> 1081860 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 568 </span> :
<span class="lineNum"> 569 </span> : /* mark the worker as processed */
<span class="lineNum"> 570 </span> : /* setting the previous one to point at the next one */
<span class="lineNum"> 571 </span><span class="lineCov"> 1081860 : *let = io-&gt;reader_list[i + 1];</span>
<span class="lineNum"> 572 </span> :
<span class="lineNum"> 573 </span> : /* return the position */
<span class="lineNum"> 574 </span><span class="lineCov"> 1081860 : *pos = i - base;</span>
<span class="lineNum"> 575 </span> :
<span class="lineNum"> 576 </span> : /* on the first cycle, no one is waiting */
<span class="lineNum"> 577 </span><span class="lineCov"> 1081860 : if (waiting_cycle == 0)</span>
<span class="lineNum"> 578 </span><span class="lineCov"> 1079288 : *waiting_mac = 0;</span>
<span class="lineNum"> 579 </span> :
<span class="lineNum"> 580 </span><span class="lineCov"> 2163720 : return task;</span>
<span class="lineNum"> 581 </span> : }
<span class="lineNum"> 582 </span> : }
<span class="lineNum"> 583 </span> :
<span class="lineNum"> 584 </span> : /* next position to check */
<span class="lineNum"> 585 </span><span class="lineCov"> 12723 : let = &amp;io-&gt;reader_list[i + 1];</span>
<span class="lineNum"> 586 </span><span class="lineCov"> 12723 : }</span>
<span class="lineNum"> 587 </span> :
<span class="lineNum"> 588 </span> : /* if no worker is ready, wait for an event */
<span class="lineNum"> 589 </span><span class="lineCov"> 2605 : thread_cond_wait(&amp;io-&gt;read_done, &amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 590 </span> :
<span class="lineNum"> 591 </span> : /* count the cycles */
<span class="lineNum"> 592 </span><span class="lineCov"> 2605 : ++waiting_cycle;</span>
<span class="lineNum"> 593 </span><span class="lineCov"> 2605 : }</span>
<a name="594"><span class="lineNum"> 594 </span> : }</a>
<span class="lineNum"> 595 </span> :
<span class="lineNum"> 596 </span><span class="lineCov"> 871056 : static struct snapraid_task* io_data_read_thread(struct snapraid_io* io, unsigned* pos, unsigned* waiting_map, unsigned* waiting_mac)</span>
<span class="lineNum"> 597 </span> : {
<span class="lineNum"> 598 </span><span class="lineCov"> 871056 : return io_task_read_thread(io, io-&gt;data_base, io-&gt;data_count, pos, waiting_map, waiting_mac);</span>
<a name="599"><span class="lineNum"> 599 </span> : }</a>
<span class="lineNum"> 600 </span> :
<span class="lineNum"> 601 </span><span class="lineCov"> 210804 : static struct snapraid_task* io_parity_read_thread(struct snapraid_io* io, unsigned* pos, unsigned* waiting_map, unsigned* waiting_mac)</span>
<span class="lineNum"> 602 </span> : {
<span class="lineNum"> 603 </span><span class="lineCov"> 210804 : return io_task_read_thread(io, io-&gt;parity_base, io-&gt;parity_count, pos, waiting_map, waiting_mac);</span>
<a name="604"><span class="lineNum"> 604 </span> : }</a>
<span class="lineNum"> 605 </span> :
<span class="lineNum"> 606 </span><span class="lineCov"> 553582 : static void io_parity_write_thread(struct snapraid_io* io, unsigned* pos, unsigned* waiting_map, unsigned* waiting_mac)</span>
<span class="lineNum"> 607 </span> : {
<span class="lineNum"> 608 </span> : unsigned waiting_cycle;
<span class="lineNum"> 609 </span> :
<span class="lineNum"> 610 </span> : /* count the waiting cycle */
<span class="lineNum"> 611 </span><span class="lineCov"> 553582 : waiting_cycle = 0;</span>
<span class="lineNum"> 612 </span> :
<span class="lineNum"> 613 </span> : /* clear the waiting indexes */
<span class="lineNum"> 614 </span><span class="lineCov"> 553582 : *waiting_mac = 0;</span>
<span class="lineNum"> 615 </span> :
<span class="lineNum"> 616 </span> : /* the synchronization is protected by the io mutex */
<span class="lineNum"> 617 </span><span class="lineCov"> 553582 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 618 </span> :
<span class="lineNum"> 619 </span> : while (1) {
<span class="lineNum"> 620 </span> : unsigned char* let;
<span class="lineNum"> 621 </span> : unsigned busy_index;
<span class="lineNum"> 622 </span> :
<span class="lineNum"> 623 </span> : /* get the next index the IO is going to use */
<span class="lineNum"> 624 </span> : /* we must ensure that this index has not a write in progress */
<span class="lineNum"> 625 </span> : /* to avoid a concurrent access */
<span class="lineNum"> 626 </span> : /* note that we are already sure that a write is not in progress */
<span class="lineNum"> 627 </span> : /* at the index the IO is using at now */
<span class="lineNum"> 628 </span><span class="lineCov"> 622113 : busy_index = (io-&gt;writer_index + 1) % io-&gt;io_max;</span>
<span class="lineNum"> 629 </span> :
<span class="lineNum"> 630 </span> : /* search for a worker that has already finished */
<span class="lineNum"> 631 </span><span class="lineCov"> 622113 : let = &amp;io-&gt;writer_list[0];</span>
<span class="lineNum"> 632 </span> : while (1) {
<span class="lineNum"> 633 </span><span class="lineCov"> 854835 : unsigned i = *let;</span>
<span class="lineNum"> 634 </span> : struct snapraid_worker* worker;
<span class="lineNum"> 635 </span> :
<span class="lineNum"> 636 </span> : /* if we are at the end */
<span class="lineNum"> 637 </span><span class="lineCov"> 854835 : if (i == io-&gt;writer_max)</span>
<span class="lineNum"> 638 </span><span class="lineCov"> 68531 : break;</span>
<span class="lineNum"> 639 </span> :
<span class="lineNum"> 640 </span> : /* if it's the first cycle */
<span class="lineNum"> 641 </span><span class="lineCov"> 786304 : if (waiting_cycle == 0) {</span>
<span class="lineNum"> 642 </span> : /* store the waiting indexes */
<span class="lineNum"> 643 </span><span class="lineCov"> 717089 : waiting_map[(*waiting_mac)++] = i;</span>
<span class="lineNum"> 644 </span> : }
<span class="lineNum"> 645 </span> :
<span class="lineNum"> 646 </span><span class="lineCov"> 786304 : worker = &amp;io-&gt;writer_map[i];</span>
<span class="lineNum"> 647 </span> :
<span class="lineNum"> 648 </span> : /* the two indexes cannot be equal */
<span class="lineNum"> 649 </span><span class="lineCov"> 786304 : assert(io-&gt;writer_index != worker-&gt;index);</span>
<span class="lineNum"> 650 </span> :
<span class="lineNum"> 651 </span> : /* if the worker has finished this index */
<span class="lineNum"> 652 </span><span class="lineCov"> 786304 : if (busy_index != worker-&gt;index) {</span>
<span class="lineNum"> 653 </span><span class="lineCov"> 553582 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 654 </span> :
<span class="lineNum"> 655 </span> : /* mark the worker as processed */
<span class="lineNum"> 656 </span> : /* setting the previous one to point at the next one */
<span class="lineNum"> 657 </span><span class="lineCov"> 553582 : *let = io-&gt;writer_list[i + 1];</span>
<span class="lineNum"> 658 </span> :
<span class="lineNum"> 659 </span> : /* return the position */
<span class="lineNum"> 660 </span><span class="lineCov"> 553582 : *pos = i;</span>
<span class="lineNum"> 661 </span> :
<span class="lineNum"> 662 </span> : /* on the first cycle, no one is waiting */
<span class="lineNum"> 663 </span><span class="lineCov"> 553582 : if (waiting_cycle == 0)</span>
<span class="lineNum"> 664 </span><span class="lineCov"> 485051 : *waiting_mac = 0;</span>
<span class="lineNum"> 665 </span> :
<span class="lineNum"> 666 </span><span class="lineCov"> 1107164 : return;</span>
<span class="lineNum"> 667 </span> : }
<span class="lineNum"> 668 </span> :
<span class="lineNum"> 669 </span> : /* next position to check */
<span class="lineNum"> 670 </span><span class="lineCov"> 232722 : let = &amp;io-&gt;writer_list[i + 1];</span>
<span class="lineNum"> 671 </span><span class="lineCov"> 232722 : }</span>
<span class="lineNum"> 672 </span> :
<span class="lineNum"> 673 </span> : /* if no worker is ready, wait for an event */
<span class="lineNum"> 674 </span><span class="lineCov"> 68531 : thread_cond_wait(&amp;io-&gt;write_done, &amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 675 </span> :
<span class="lineNum"> 676 </span> : /* count the cycles */
<span class="lineNum"> 677 </span><span class="lineCov"> 68531 : ++waiting_cycle;</span>
<span class="lineNum"> 678 </span><span class="lineCov"> 68531 : }</span>
<a name="679"><span class="lineNum"> 679 </span> : }</a>
<span class="lineNum"> 680 </span> :
<span class="lineNum"> 681 </span><span class="lineCov"> 1081809 : static void io_reader_worker(struct snapraid_worker* worker, struct snapraid_task* task)</span>
<span class="lineNum"> 682 </span> : {
<span class="lineNum"> 683 </span> : /* if we reached the end */
<span class="lineNum"> 684 </span><span class="lineCov"> 1081809 : if (task-&gt;position &gt;= worker-&gt;io-&gt;block_max) {</span>
<span class="lineNum"> 685 </span> : /* complete a dummy task */
<span class="lineNum"> 686 </span><span class="lineCov"> 120 : task-&gt;state = TASK_STATE_EMPTY;</span>
<span class="lineNum"> 687 </span> : } else {
<span class="lineNum"> 688 </span><span class="lineCov"> 1081689 : worker-&gt;func(worker, task);</span>
<span class="lineNum"> 689 </span> : }
<a name="690"><span class="lineNum"> 690 </span><span class="lineCov"> 1081474 : }</span></a>
<span class="lineNum"> 691 </span> :
<span class="lineNum"> 692 </span><span class="lineCov"> 648 : static void* io_reader_thread(void* arg)</span>
<span class="lineNum"> 693 </span> : {
<span class="lineNum"> 694 </span><span class="lineCov"> 648 : struct snapraid_worker* worker = arg;</span>
<span class="lineNum"> 695 </span> :
<span class="lineNum"> 696 </span> : /* force completion of the first task */
<span class="lineNum"> 697 </span><span class="lineCov"> 648 : io_reader_worker(worker, &amp;worker-&gt;task_map[0]);</span>
<span class="lineNum"> 698 </span> :
<span class="lineNum"> 699 </span> : while (1) {
<span class="lineNum"> 700 </span> : struct snapraid_task* task;
<span class="lineNum"> 701 </span> :
<span class="lineNum"> 702 </span> : /* get the new task */
<span class="lineNum"> 703 </span><span class="lineCov"> 1162742 : task = io_reader_step(worker);</span>
<span class="lineNum"> 704 </span> :
<span class="lineNum"> 705 </span> : /* if no task, it means to exit */
<span class="lineNum"> 706 </span><span class="lineCov"> 1163099 : if (!task)</span>
<span class="lineNum"> 707 </span><span class="lineCov"> 647 : break;</span>
<span class="lineNum"> 708 </span> :
<span class="lineNum"> 709 </span> : /* nothing more to do */
<span class="lineNum"> 710 </span><span class="lineCov"> 1162452 : if (task-&gt;state == TASK_STATE_EMPTY)</span>
<span class="lineNum"> 711 </span><span class="lineCov"> 81239 : continue;</span>
<span class="lineNum"> 712 </span> :
<span class="lineNum"> 713 </span><span class="lineCov"> 1081213 : assert(task-&gt;state == TASK_STATE_READY);</span>
<span class="lineNum"> 714 </span> :
<span class="lineNum"> 715 </span> : /* work on the assigned task */
<span class="lineNum"> 716 </span><span class="lineCov"> 1081213 : io_reader_worker(worker, task);</span>
<span class="lineNum"> 717 </span><span class="lineCov"> 1162097 : }</span>
<span class="lineNum"> 718 </span> :
<span class="lineNum"> 719 </span><span class="lineCov"> 647 : return 0;</span>
<a name="720"><span class="lineNum"> 720 </span> : }</a>
<span class="lineNum"> 721 </span> :
<span class="lineNum"> 722 </span><span class="lineCov"> 462 : static void* io_writer_thread(void* arg)</span>
<span class="lineNum"> 723 </span> : {
<span class="lineNum"> 724 </span><span class="lineCov"> 462 : struct snapraid_worker* worker = arg;</span>
<span class="lineNum"> 725 </span><span class="lineCov"> 462 : int latest_state = TASK_STATE_DONE;</span>
<span class="lineNum"> 726 </span> :
<span class="lineNum"> 727 </span> : while (1) {
<span class="lineNum"> 728 </span> : struct snapraid_task* task;
<span class="lineNum"> 729 </span> :
<span class="lineNum"> 730 </span> : /* get the new task */
<span class="lineNum"> 731 </span><span class="lineCov"> 554042 : task = io_writer_step(worker, latest_state);</span>
<span class="lineNum"> 732 </span> :
<span class="lineNum"> 733 </span> : /* if no task, it means to exit */
<span class="lineNum"> 734 </span><span class="lineCov"> 554046 : if (!task)</span>
<span class="lineNum"> 735 </span><span class="lineCov"> 462 : break;</span>
<span class="lineNum"> 736 </span> :
<span class="lineNum"> 737 </span> : /* nothing more to do */
<span class="lineNum"> 738 </span><span class="lineCov"> 553584 : if (task-&gt;state == TASK_STATE_EMPTY) {</span>
<span class="lineNum"> 739 </span><span class="lineCov"> 13749 : latest_state = TASK_STATE_DONE;</span>
<span class="lineNum"> 740 </span><span class="lineCov"> 13749 : continue;</span>
<span class="lineNum"> 741 </span> : }
<span class="lineNum"> 742 </span> :
<span class="lineNum"> 743 </span><span class="lineCov"> 539835 : assert(task-&gt;state == TASK_STATE_READY);</span>
<span class="lineNum"> 744 </span> :
<span class="lineNum"> 745 </span> : /* work on the assigned task */
<span class="lineNum"> 746 </span><span class="lineCov"> 539835 : worker-&gt;func(worker, task);</span>
<span class="lineNum"> 747 </span> :
<span class="lineNum"> 748 </span> : /* save the resulting state */
<span class="lineNum"> 749 </span><span class="lineCov"> 539831 : latest_state = task-&gt;state;</span>
<span class="lineNum"> 750 </span><span class="lineCov"> 553580 : }</span>
<span class="lineNum"> 751 </span> :
<span class="lineNum"> 752 </span><span class="lineCov"> 462 : return 0;</span>
<a name="753"><span class="lineNum"> 753 </span> : }</a>
<span class="lineNum"> 754 </span> :
<span class="lineNum"> 755 </span><span class="lineCov"> 95 : static void io_start_thread(struct snapraid_io* io,</span>
<span class="lineNum"> 756 </span> : block_off_t blockstart, block_off_t blockmax,
<span class="lineNum"> 757 </span> : int (*block_is_enabled)(void* arg, block_off_t), void* blockarg)
<span class="lineNum"> 758 </span> : {
<span class="lineNum"> 759 </span> : unsigned i;
<span class="lineNum"> 760 </span> :
<span class="lineNum"> 761 </span><span class="lineCov"> 95 : io-&gt;block_start = blockstart;</span>
<span class="lineNum"> 762 </span><span class="lineCov"> 95 : io-&gt;block_max = blockmax;</span>
<span class="lineNum"> 763 </span><span class="lineCov"> 95 : io-&gt;block_is_enabled = block_is_enabled;</span>
<span class="lineNum"> 764 </span><span class="lineCov"> 95 : io-&gt;block_arg = blockarg;</span>
<span class="lineNum"> 765 </span><span class="lineCov"> 95 : io-&gt;block_next = blockstart;</span>
<span class="lineNum"> 766 </span> :
<span class="lineNum"> 767 </span><span class="lineCov"> 95 : io-&gt;done = 0;</span>
<span class="lineNum"> 768 </span><span class="lineCov"> 95 : io-&gt;reader_index = io-&gt;io_max - 1;</span>
<span class="lineNum"> 769 </span><span class="lineCov"> 95 : io-&gt;writer_index = 0;</span>
<span class="lineNum"> 770 </span> :
<span class="lineNum"> 771 </span> : /* clear writer errors */
<span class="lineNum"> 772 </span><span class="lineCov"> 475 : for (i = 0; i &lt; IO_WRITER_ERROR_MAX; ++i)</span>
<span class="lineNum"> 773 </span><span class="lineCov"> 380 : io-&gt;writer_error[i] = 0;</span>
<span class="lineNum"> 774 </span> :
<span class="lineNum"> 775 </span> : /* setup the initial read pending tasks, except the latest one, */
<span class="lineNum"> 776 </span> : /* the latest will be initialized at the fist io_read_next() call */
<span class="lineNum"> 777 </span><span class="lineCov"> 12160 : for (i = 0; i &lt; io-&gt;io_max - 1; ++i) {</span>
<span class="lineNum"> 778 </span><span class="lineCov"> 12065 : block_off_t blockcur = io_position_next(io);</span>
<span class="lineNum"> 779 </span> :
<span class="lineNum"> 780 </span><span class="lineCov"> 12065 : io_reader_sched(io, i, blockcur);</span>
<span class="lineNum"> 781 </span> : }
<span class="lineNum"> 782 </span> :
<span class="lineNum"> 783 </span> : /* setup the lists of workers to process */
<span class="lineNum"> 784 </span><span class="lineCov"> 95 : io-&gt;reader_list[0] = io-&gt;reader_max;</span>
<span class="lineNum"> 785 </span><span class="lineCov"> 652 : for (i = 0; i &lt;= io-&gt;writer_max; ++i)</span>
<span class="lineNum"> 786 </span><span class="lineCov"> 557 : io-&gt;writer_list[i] = i;</span>
<span class="lineNum"> 787 </span> :
<span class="lineNum"> 788 </span> : /* start the reader threads */
<span class="lineNum"> 789 </span><span class="lineCov"> 743 : for (i = 0; i &lt; io-&gt;reader_max; ++i) {</span>
<span class="lineNum"> 790 </span><span class="lineCov"> 648 : struct snapraid_worker* worker = &amp;io-&gt;reader_map[i];</span>
<span class="lineNum"> 791 </span> :
<span class="lineNum"> 792 </span><span class="lineCov"> 648 : worker-&gt;index = 0;</span>
<span class="lineNum"> 793 </span> :
<span class="lineNum"> 794 </span><span class="lineCov"> 648 : thread_create(&amp;worker-&gt;thread, 0, io_reader_thread, worker);</span>
<span class="lineNum"> 795 </span> : }
<span class="lineNum"> 796 </span> :
<span class="lineNum"> 797 </span> : /* start the writer threads */
<span class="lineNum"> 798 </span><span class="lineCov"> 557 : for (i = 0; i &lt; io-&gt;writer_max; ++i) {</span>
<span class="lineNum"> 799 </span><span class="lineCov"> 462 : struct snapraid_worker* worker = &amp;io-&gt;writer_map[i];</span>
<span class="lineNum"> 800 </span> :
<span class="lineNum"> 801 </span><span class="lineCov"> 462 : worker-&gt;index = io-&gt;io_max - 1;</span>
<span class="lineNum"> 802 </span> :
<span class="lineNum"> 803 </span><span class="lineCov"> 462 : thread_create(&amp;worker-&gt;thread, 0, io_writer_thread, worker);</span>
<span class="lineNum"> 804 </span> : }
<a name="805"><span class="lineNum"> 805 </span><span class="lineCov"> 95 : }</span></a>
<span class="lineNum"> 806 </span> :
<span class="lineNum"> 807 </span><span class="lineCov"> 95 : static void io_stop_thread(struct snapraid_io* io)</span>
<span class="lineNum"> 808 </span> : {
<span class="lineNum"> 809 </span> : unsigned i;
<span class="lineNum"> 810 </span> :
<span class="lineNum"> 811 </span><span class="lineCov"> 95 : thread_mutex_lock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 812 </span> :
<span class="lineNum"> 813 </span> : /* mark that we are stopping */
<span class="lineNum"> 814 </span><span class="lineCov"> 95 : io-&gt;done = 1;</span>
<span class="lineNum"> 815 </span> :
<span class="lineNum"> 816 </span> : /* signal all the threads to recognize the new state */
<span class="lineNum"> 817 </span><span class="lineCov"> 95 : thread_cond_broadcast(&amp;io-&gt;read_sched);</span>
<span class="lineNum"> 818 </span><span class="lineCov"> 95 : thread_cond_broadcast(&amp;io-&gt;write_sched);</span>
<span class="lineNum"> 819 </span> :
<span class="lineNum"> 820 </span><span class="lineCov"> 95 : thread_mutex_unlock(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 821 </span> :
<span class="lineNum"> 822 </span> : /* wait for all readers to terminate */
<span class="lineNum"> 823 </span><span class="lineCov"> 743 : for (i = 0; i &lt; io-&gt;reader_max; ++i) {</span>
<span class="lineNum"> 824 </span><span class="lineCov"> 648 : struct snapraid_worker* worker = &amp;io-&gt;reader_map[i];</span>
<span class="lineNum"> 825 </span> : void* retval;
<span class="lineNum"> 826 </span> :
<span class="lineNum"> 827 </span> : /* wait for thread termination */
<span class="lineNum"> 828 </span><span class="lineCov"> 648 : thread_join(worker-&gt;thread, &amp;retval);</span>
<span class="lineNum"> 829 </span> : }
<span class="lineNum"> 830 </span> :
<span class="lineNum"> 831 </span> : /* wait for all writers to terminate */
<span class="lineNum"> 832 </span><span class="lineCov"> 557 : for (i = 0; i &lt; io-&gt;writer_max; ++i) {</span>
<span class="lineNum"> 833 </span><span class="lineCov"> 462 : struct snapraid_worker* worker = &amp;io-&gt;writer_map[i];</span>
<span class="lineNum"> 834 </span> : void* retval;
<span class="lineNum"> 835 </span> :
<span class="lineNum"> 836 </span> : /* wait for thread termination */
<span class="lineNum"> 837 </span><span class="lineCov"> 462 : thread_join(worker-&gt;thread, &amp;retval);</span>
<span class="lineNum"> 838 </span> : }
<span class="lineNum"> 839 </span><span class="lineCov"> 95 : }</span>
<span class="lineNum"> 840 </span> :
<span class="lineNum"> 841 </span> : #endif
<span class="lineNum"> 842 </span> :
<span class="lineNum"> 843 </span> : /*****************************************************************************/
<a name="844"><span class="lineNum"> 844 </span> : /* global */</a>
<span class="lineNum"> 845 </span> :
<span class="lineNum"> 846 </span><span class="lineCov"> 96 : void io_init(struct snapraid_io* io, struct snapraid_state* state,</span>
<span class="lineNum"> 847 </span> : unsigned io_cache, unsigned buffer_max,
<span class="lineNum"> 848 </span> : void (*data_reader)(struct snapraid_worker*, struct snapraid_task*),
<span class="lineNum"> 849 </span> : struct snapraid_handle* handle_map, unsigned handle_max,
<span class="lineNum"> 850 </span> : void (*parity_reader)(struct snapraid_worker*, struct snapraid_task*),
<span class="lineNum"> 851 </span> : void (*parity_writer)(struct snapraid_worker*, struct snapraid_task*),
<span class="lineNum"> 852 </span> : struct snapraid_parity_handle* parity_handle_map, unsigned parity_handle_max)
<span class="lineNum"> 853 </span> : {
<span class="lineNum"> 854 </span> : unsigned i;
<span class="lineNum"> 855 </span> : size_t allocated;
<span class="lineNum"> 856 </span> :
<span class="lineNum"> 857 </span><span class="lineCov"> 96 : io-&gt;state = state;</span>
<span class="lineNum"> 858 </span> :
<span class="lineNum"> 859 </span> : #if HAVE_PTHREAD
<span class="lineNum"> 860 </span><span class="lineCov"> 96 : if (io_cache == 0) {</span>
<span class="lineNum"> 861 </span> : /* default is 8 MiB of cache */
<span class="lineNum"> 862 </span> : /* this seems to be a good tradeoff between speed and memory usage */
<span class="lineNum"> 863 </span><span class="lineCov"> 95 : io-&gt;io_max = 8 * 1024 * 1024 / state-&gt;block_size;</span>
<span class="lineNum"> 864 </span><span class="lineCov"> 95 : if (io-&gt;io_max &lt; IO_MIN)</span>
<span class="lineNum"> 865 </span><span class="lineNoCov"> 0 : io-&gt;io_max = IO_MIN;</span>
<span class="lineNum"> 866 </span><span class="lineCov"> 95 : if (io-&gt;io_max &gt; IO_MAX)</span>
<span class="lineNum"> 867 </span><span class="lineCov"> 95 : io-&gt;io_max = IO_MAX;</span>
<span class="lineNum"> 868 </span> : } else {
<span class="lineNum"> 869 </span><span class="lineCov"> 1 : io-&gt;io_max = io_cache;</span>
<span class="lineNum"> 870 </span> : }
<span class="lineNum"> 871 </span> : #else
<span class="lineNum"> 872 </span> : (void)io_cache;
<span class="lineNum"> 873 </span> :
<span class="lineNum"> 874 </span> : /* without pthread force the mono thread mode */
<span class="lineNum"> 875 </span> : io-&gt;io_max = 1;
<span class="lineNum"> 876 </span> : #endif
<span class="lineNum"> 877 </span> :
<span class="lineNum"> 878 </span><span class="lineCov"> 96 : assert(io-&gt;io_max == 1 || (io-&gt;io_max &gt;= IO_MIN &amp;&amp; io-&gt;io_max &lt;= IO_MAX));</span>
<span class="lineNum"> 879 </span> :
<span class="lineNum"> 880 </span><span class="lineCov"> 96 : io-&gt;buffer_max = buffer_max;</span>
<span class="lineNum"> 881 </span><span class="lineCov"> 96 : allocated = 0;</span>
<span class="lineNum"> 882 </span><span class="lineCov"> 12257 : for (i = 0; i &lt; io-&gt;io_max; ++i) {</span>
<span class="lineNum"> 883 </span><span class="lineCov"> 12161 : if (state-&gt;file_mode != ADVISE_DIRECT)</span>
<span class="lineNum"> 884 </span><span class="lineCov"> 12161 : io-&gt;buffer_map[i] = malloc_nofail_vector_align(handle_max, buffer_max, state-&gt;block_size, &amp;io-&gt;buffer_alloc_map[i]);</span>
<span class="lineNum"> 885 </span> : else
<span class="lineNum"> 886 </span><span class="lineNoCov"> 0 : io-&gt;buffer_map[i] = malloc_nofail_vector_direct(handle_max, buffer_max, state-&gt;block_size, &amp;io-&gt;buffer_alloc_map[i]);</span>
<span class="lineNum"> 887 </span><span class="lineCov"> 12161 : if (!state-&gt;opt.skip_self)</span>
<span class="lineNum"> 888 </span><span class="lineNoCov"> 0 : mtest_vector(io-&gt;buffer_max, state-&gt;block_size, io-&gt;buffer_map[i]);</span>
<span class="lineNum"> 889 </span><span class="lineCov"> 12161 : allocated += state-&gt;block_size * buffer_max;</span>
<span class="lineNum"> 890 </span> : }
<span class="lineNum"> 891 </span> :
<span class="lineNum"> 892 </span><span class="lineCov"> 96 : msg_progress(&quot;Using %u MiB of memory for %u blocks of IO cache.\n&quot;, (unsigned)(allocated / MEBI), io-&gt;io_max);</span>
<span class="lineNum"> 893 </span> :
<span class="lineNum"> 894 </span><span class="lineCov"> 96 : if (parity_writer) {</span>
<span class="lineNum"> 895 </span><span class="lineCov"> 83 : io-&gt;reader_max = handle_max;</span>
<span class="lineNum"> 896 </span><span class="lineCov"> 83 : io-&gt;writer_max = parity_handle_max;</span>
<span class="lineNum"> 897 </span> : } else {
<span class="lineNum"> 898 </span><span class="lineCov"> 13 : io-&gt;reader_max = handle_max + parity_handle_max;</span>
<span class="lineNum"> 899 </span><span class="lineCov"> 13 : io-&gt;writer_max = 0;</span>
<span class="lineNum"> 900 </span> : }
<span class="lineNum"> 901 </span> :
<span class="lineNum"> 902 </span><span class="lineCov"> 96 : io-&gt;reader_map = malloc_nofail(sizeof(struct snapraid_worker) * io-&gt;reader_max);</span>
<span class="lineNum"> 903 </span><span class="lineCov"> 96 : io-&gt;reader_list = malloc_nofail(io-&gt;reader_max + 1);</span>
<span class="lineNum"> 904 </span><span class="lineCov"> 96 : io-&gt;writer_map = malloc_nofail(sizeof(struct snapraid_worker) * io-&gt;writer_max);</span>
<span class="lineNum"> 905 </span><span class="lineCov"> 96 : io-&gt;writer_list = malloc_nofail(io-&gt;writer_max + 1);</span>
<span class="lineNum"> 906 </span> :
<span class="lineNum"> 907 </span><span class="lineCov"> 96 : io-&gt;data_base = 0;</span>
<span class="lineNum"> 908 </span><span class="lineCov"> 96 : io-&gt;data_count = handle_max;</span>
<span class="lineNum"> 909 </span><span class="lineCov"> 96 : io-&gt;parity_base = handle_max;</span>
<span class="lineNum"> 910 </span><span class="lineCov"> 96 : io-&gt;parity_count = parity_handle_max;</span>
<span class="lineNum"> 911 </span> :
<span class="lineNum"> 912 </span><span class="lineCov"> 750 : for (i = 0; i &lt; io-&gt;reader_max; ++i) {</span>
<span class="lineNum"> 913 </span><span class="lineCov"> 654 : struct snapraid_worker* worker = &amp;io-&gt;reader_map[i];</span>
<span class="lineNum"> 914 </span> :
<span class="lineNum"> 915 </span><span class="lineCov"> 654 : worker-&gt;io = io;</span>
<span class="lineNum"> 916 </span> :
<span class="lineNum"> 917 </span><span class="lineCov"> 654 : if (i &lt; handle_max) {</span>
<span class="lineNum"> 918 </span> : /* it's a data read */
<span class="lineNum"> 919 </span><span class="lineCov"> 576 : worker-&gt;handle = &amp;handle_map[i];</span>
<span class="lineNum"> 920 </span><span class="lineCov"> 576 : worker-&gt;parity_handle = 0;</span>
<span class="lineNum"> 921 </span><span class="lineCov"> 576 : worker-&gt;func = data_reader;</span>
<span class="lineNum"> 922 </span> :
<span class="lineNum"> 923 </span> : /* data read is put in lower buffer index */
<span class="lineNum"> 924 </span><span class="lineCov"> 576 : worker-&gt;buffer_skew = 0;</span>
<span class="lineNum"> 925 </span> : } else {
<span class="lineNum"> 926 </span> : /* it's a parity read */
<span class="lineNum"> 927 </span><span class="lineCov"> 78 : worker-&gt;handle = 0;</span>
<span class="lineNum"> 928 </span><span class="lineCov"> 78 : worker-&gt;parity_handle = &amp;parity_handle_map[i - handle_max];</span>
<span class="lineNum"> 929 </span><span class="lineCov"> 78 : worker-&gt;func = parity_reader;</span>
<span class="lineNum"> 930 </span> :
<span class="lineNum"> 931 </span> : /* parity read is put after data and computed parity */
<span class="lineNum"> 932 </span><span class="lineCov"> 78 : worker-&gt;buffer_skew = parity_handle_max;</span>
<span class="lineNum"> 933 </span> : }
<span class="lineNum"> 934 </span> : }
<span class="lineNum"> 935 </span> :
<span class="lineNum"> 936 </span><span class="lineCov"> 559 : for (i = 0; i &lt; io-&gt;writer_max; ++i) {</span>
<span class="lineNum"> 937 </span><span class="lineCov"> 463 : struct snapraid_worker* worker = &amp;io-&gt;writer_map[i];</span>
<span class="lineNum"> 938 </span> :
<span class="lineNum"> 939 </span><span class="lineCov"> 463 : worker-&gt;io = io;</span>
<span class="lineNum"> 940 </span> :
<span class="lineNum"> 941 </span> : /* it's a parity write */
<span class="lineNum"> 942 </span><span class="lineCov"> 463 : worker-&gt;handle = 0;</span>
<span class="lineNum"> 943 </span><span class="lineCov"> 463 : worker-&gt;parity_handle = &amp;parity_handle_map[i];</span>
<span class="lineNum"> 944 </span><span class="lineCov"> 463 : worker-&gt;func = parity_writer;</span>
<span class="lineNum"> 945 </span> :
<span class="lineNum"> 946 </span> : /* parity to write is put after data */
<span class="lineNum"> 947 </span><span class="lineCov"> 463 : worker-&gt;buffer_skew = handle_max;</span>
<span class="lineNum"> 948 </span> : }
<span class="lineNum"> 949 </span> :
<span class="lineNum"> 950 </span> : #if HAVE_PTHREAD
<span class="lineNum"> 951 </span><span class="lineCov"> 96 : if (io-&gt;io_max &gt; 1) {</span>
<span class="lineNum"> 952 </span><span class="lineCov"> 95 : io_read_next = io_read_next_thread;</span>
<span class="lineNum"> 953 </span><span class="lineCov"> 95 : io_write_preset = io_write_preset_thread;</span>
<span class="lineNum"> 954 </span><span class="lineCov"> 95 : io_write_next = io_write_next_thread;</span>
<span class="lineNum"> 955 </span><span class="lineCov"> 95 : io_refresh = io_refresh_thread;</span>
<span class="lineNum"> 956 </span><span class="lineCov"> 95 : io_data_read = io_data_read_thread;</span>
<span class="lineNum"> 957 </span><span class="lineCov"> 95 : io_parity_read = io_parity_read_thread;</span>
<span class="lineNum"> 958 </span><span class="lineCov"> 95 : io_parity_write = io_parity_write_thread;</span>
<span class="lineNum"> 959 </span><span class="lineCov"> 95 : io_start = io_start_thread;</span>
<span class="lineNum"> 960 </span><span class="lineCov"> 95 : io_stop = io_stop_thread;</span>
<span class="lineNum"> 961 </span> :
<span class="lineNum"> 962 </span><span class="lineCov"> 95 : thread_mutex_init(&amp;io-&gt;io_mutex, 0);</span>
<span class="lineNum"> 963 </span><span class="lineCov"> 95 : thread_cond_init(&amp;io-&gt;read_done, 0);</span>
<span class="lineNum"> 964 </span><span class="lineCov"> 95 : thread_cond_init(&amp;io-&gt;read_sched, 0);</span>
<span class="lineNum"> 965 </span><span class="lineCov"> 95 : thread_cond_init(&amp;io-&gt;write_done, 0);</span>
<span class="lineNum"> 966 </span><span class="lineCov"> 95 : thread_cond_init(&amp;io-&gt;write_sched, 0);</span>
<span class="lineNum"> 967 </span> : } else
<span class="lineNum"> 968 </span> : #endif
<span class="lineNum"> 969 </span> : {
<span class="lineNum"> 970 </span><span class="lineCov"> 1 : io_read_next = io_read_next_mono;</span>
<span class="lineNum"> 971 </span><span class="lineCov"> 1 : io_write_preset = io_write_preset_mono;</span>
<span class="lineNum"> 972 </span><span class="lineCov"> 1 : io_write_next = io_write_next_mono;</span>
<span class="lineNum"> 973 </span><span class="lineCov"> 1 : io_refresh = io_refresh_mono;</span>
<span class="lineNum"> 974 </span><span class="lineCov"> 1 : io_data_read = io_data_read_mono;</span>
<span class="lineNum"> 975 </span><span class="lineCov"> 1 : io_parity_read = io_parity_read_mono;</span>
<span class="lineNum"> 976 </span><span class="lineCov"> 1 : io_parity_write = io_parity_write_mono;</span>
<span class="lineNum"> 977 </span><span class="lineCov"> 1 : io_start = io_start_mono;</span>
<span class="lineNum"> 978 </span><span class="lineCov"> 1 : io_stop = io_stop_mono;</span>
<span class="lineNum"> 979 </span> : }
<a name="980"><span class="lineNum"> 980 </span><span class="lineCov"> 96 : }</span></a>
<span class="lineNum"> 981 </span> :
<span class="lineNum"> 982 </span><span class="lineCov"> 96 : void io_done(struct snapraid_io* io)</span>
<span class="lineNum"> 983 </span> : {
<span class="lineNum"> 984 </span> : unsigned i;
<span class="lineNum"> 985 </span> :
<span class="lineNum"> 986 </span><span class="lineCov"> 12257 : for (i = 0; i &lt; io-&gt;io_max; ++i) {</span>
<span class="lineNum"> 987 </span><span class="lineCov"> 12161 : free(io-&gt;buffer_map[i]);</span>
<span class="lineNum"> 988 </span><span class="lineCov"> 12161 : free(io-&gt;buffer_alloc_map[i]);</span>
<span class="lineNum"> 989 </span> : }
<span class="lineNum"> 990 </span> :
<span class="lineNum"> 991 </span><span class="lineCov"> 96 : free(io-&gt;reader_map);</span>
<span class="lineNum"> 992 </span><span class="lineCov"> 96 : free(io-&gt;reader_list);</span>
<span class="lineNum"> 993 </span><span class="lineCov"> 96 : free(io-&gt;writer_map);</span>
<span class="lineNum"> 994 </span><span class="lineCov"> 96 : free(io-&gt;writer_list);</span>
<span class="lineNum"> 995 </span> :
<span class="lineNum"> 996 </span> : #if HAVE_PTHREAD
<span class="lineNum"> 997 </span><span class="lineCov"> 96 : if (io-&gt;io_max &gt; 1) {</span>
<span class="lineNum"> 998 </span><span class="lineCov"> 95 : thread_mutex_destroy(&amp;io-&gt;io_mutex);</span>
<span class="lineNum"> 999 </span><span class="lineCov"> 95 : thread_cond_destroy(&amp;io-&gt;read_done);</span>
<span class="lineNum"> 1000 </span><span class="lineCov"> 95 : thread_cond_destroy(&amp;io-&gt;read_sched);</span>
<span class="lineNum"> 1001 </span><span class="lineCov"> 95 : thread_cond_destroy(&amp;io-&gt;write_done);</span>
<span class="lineNum"> 1002 </span><span class="lineCov"> 95 : thread_cond_destroy(&amp;io-&gt;write_sched);</span>
<span class="lineNum"> 1003 </span> : }
<span class="lineNum"> 1004 </span> : #endif
<span class="lineNum"> 1005 </span><span class="lineCov"> 96 : }</span>
<span class="lineNum"> 1006 </span> :
</pre>
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