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<td width="35%" class="headerValue"><a href="../index.html">top level</a> - <a href="index.html">cmdline</a> - util.h<span style="font-size: 80%;"> (source / <a href="util.h.func.html">functions</a>)</span></td>
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<td width="15%"></td>
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<td width="10%" class="headerCovTableHead">Hit</td>
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<td width="10%" class="headerCovTableHead">Total</td>
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<td width="15%" class="headerCovTableHead">Coverage</td>
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<td class="headerItem">Test:</td>
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<td class="headerValue">lcov.info</td>
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<td></td>
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<td class="headerItem">Lines:</td>
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<td class="headerCovTableEntry">28</td>
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<td class="headerCovTableEntry">30</td>
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<td class="headerCovTableEntryHi">93.3 %</td>
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<tr>
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<td class="headerItem">Date:</td>
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<td class="headerValue">2016-11-21</td>
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<td></td>
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<td class="headerItem">Functions:</td>
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<td class="headerCovTableEntry">4</td>
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<td class="headerCovTableEntry">4</td>
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<td class="headerCovTableEntryHi">100.0 %</td>
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</tr>
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<tr><td><img src="../glass.png" width=3 height=3 alt=""></td></tr>
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<td>
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<pre class="sourceHeading"> Line data Source code</pre>
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<pre class="source">
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<a name="1"><span class="lineNum"> 1 </span> : /*</a>
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<span class="lineNum"> 2 </span> : * Copyright (C) 2011 Andrea Mazzoleni
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<span class="lineNum"> 3 </span> : *
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<span class="lineNum"> 4 </span> : * This program is free software: you can redistribute it and/or modify
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<span class="lineNum"> 5 </span> : * it under the terms of the GNU General Public License as published by
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<span class="lineNum"> 6 </span> : * the Free Software Foundation, either version 3 of the License, or
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<span class="lineNum"> 7 </span> : * (at your option) any later version.
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<span class="lineNum"> 8 </span> : *
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<span class="lineNum"> 9 </span> : * This program is distributed in the hope that it will be useful,
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<span class="lineNum"> 10 </span> : * but WITHOUT ANY WARRANTY; without even the implied warranty of
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<span class="lineNum"> 11 </span> : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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<span class="lineNum"> 12 </span> : * GNU General Public License for more details.
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<span class="lineNum"> 13 </span> : *
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<span class="lineNum"> 14 </span> : * You should have received a copy of the GNU General Public License
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<span class="lineNum"> 15 </span> : * along with this program. If not, see <http://www.gnu.org/licenses/>.
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<span class="lineNum"> 16 </span> : */
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<span class="lineNum"> 17 </span> :
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<span class="lineNum"> 18 </span> : #ifndef __UTIL_H
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<span class="lineNum"> 19 </span> : #define __UTIL_H
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<span class="lineNum"> 20 </span> :
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<span class="lineNum"> 21 </span> : /****************************************************************************/
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<span class="lineNum"> 22 </span> : /* memory */
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<span class="lineNum"> 23 </span> :
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<span class="lineNum"> 24 </span> : /**
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<span class="lineNum"> 25 </span> : * Safe aligned malloc.
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<span class="lineNum"> 26 </span> : * If no memory is available, it aborts.
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<span class="lineNum"> 27 </span> : */
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<span class="lineNum"> 28 </span> : void* malloc_nofail_align(size_t size, void** freeptr);
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<span class="lineNum"> 29 </span> :
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<span class="lineNum"> 30 </span> : /**
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<span class="lineNum"> 31 </span> : * Safe aligned malloc. Usable for direct io.
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<span class="lineNum"> 32 </span> : */
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<span class="lineNum"> 33 </span> : void* malloc_nofail_direct(size_t size, void** freeptr);
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<span class="lineNum"> 34 </span> :
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<span class="lineNum"> 35 </span> : /**
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<span class="lineNum"> 36 </span> : * Safe aligned vector allocation.
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<span class="lineNum"> 37 </span> : * If no memory is available, it aborts.
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<span class="lineNum"> 38 </span> : */
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<span class="lineNum"> 39 </span> : void** malloc_nofail_vector_align(int nd, int n, size_t size, void** freeptr);
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<span class="lineNum"> 40 </span> :
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<span class="lineNum"> 41 </span> : /**
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<span class="lineNum"> 42 </span> : * Safe page vector allocation. Usable for direct io.
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<span class="lineNum"> 43 </span> : * If no memory is available, it aborts.
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<span class="lineNum"> 44 </span> : */
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<span class="lineNum"> 45 </span> : void** malloc_nofail_vector_direct(int nd, int n, size_t size, void** freeptr);
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<span class="lineNum"> 46 </span> :
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<span class="lineNum"> 47 </span> : /**
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<span class="lineNum"> 48 </span> : * Safe allocation with memory test.
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<span class="lineNum"> 49 </span> : */
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<span class="lineNum"> 50 </span> : void* malloc_nofail_test(size_t size);
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<span class="lineNum"> 51 </span> :
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<span class="lineNum"> 52 </span> : /**
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<span class="lineNum"> 53 </span> : * Test the memory vector for RAM problems.
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<span class="lineNum"> 54 </span> : * If a problem is found, it crashes.
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<span class="lineNum"> 55 </span> : */
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<span class="lineNum"> 56 </span> : void mtest_vector(int n, size_t size, void** vv);
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<span class="lineNum"> 57 </span> :
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<span class="lineNum"> 58 </span> : /****************************************************************************/
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<span class="lineNum"> 59 </span> : /* crc */
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<span class="lineNum"> 60 </span> :
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<span class="lineNum"> 61 </span> : /**
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<span class="lineNum"> 62 </span> : * CRC initial value.
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<span class="lineNum"> 63 </span> : * Using a not zero value allows to detect a leading run of zeros.
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<span class="lineNum"> 64 </span> : */
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<span class="lineNum"> 65 </span> : #define CRC_IV 0xffffffffU
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<span class="lineNum"> 66 </span> :
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<span class="lineNum"> 67 </span> : /**
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<span class="lineNum"> 68 </span> : * CRC-32 (Castagnoli) table.
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<span class="lineNum"> 69 </span> : */
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<span class="lineNum"> 70 </span> : extern uint32_t CRC32C_0[256];
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<span class="lineNum"> 71 </span> : extern uint32_t CRC32C_1[256];
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<span class="lineNum"> 72 </span> : extern uint32_t CRC32C_2[256];
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<span class="lineNum"> 73 </span> : extern uint32_t CRC32C_3[256];
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<span class="lineNum"> 74 </span> :
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<span class="lineNum"> 75 </span> : /**
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<span class="lineNum"> 76 </span> : * If the CPU support the CRC instructions.
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<span class="lineNum"> 77 </span> : */
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<span class="lineNum"> 78 </span> : #if HAVE_SSE42
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<span class="lineNum"> 79 </span> : extern int crc_x86;
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<span class="lineNum"> 80 </span> : #endif
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<span class="lineNum"> 81 </span> :
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<span class="lineNum"> 82 </span> : /**
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<a name="83"><span class="lineNum"> 83 </span> : * Compute CRC-32 (Castagnoli) for a single byte without the IV.</a>
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<span class="lineNum"> 84 </span> : */
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<span class="lineNum"> 85 </span><span class="lineCov"> 3808426 : static inline uint32_t crc32c_plain_char(uint32_t crc, unsigned char c)</span>
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<span class="lineNum"> 86 </span> : {
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<span class="lineNum"> 87 </span> : #if HAVE_SSE42
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<span class="lineNum"> 88 </span><span class="lineCov"> 3808426 : if (tommy_likely(crc_x86)) {</span>
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<span class="lineNum"> 89 </span><span class="lineCov"> 3808426 : asm("crc32b %1, %0\n" : "+r" (crc) : "m" (c));</span>
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<span class="lineNum"> 90 </span><span class="lineCov"> 3808426 : return crc;</span>
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<span class="lineNum"> 91 </span> : }
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<span class="lineNum"> 92 </span> : #endif
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<span class="lineNum"> 93 </span><span class="lineNoCov"> 0 : return CRC32C_0[(crc ^ c) & 0xff] ^ (crc >> 8);</span>
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<span class="lineNum"> 94 </span> : }
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<span class="lineNum"> 95 </span> :
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<span class="lineNum"> 96 </span> : /**
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<a name="97"><span class="lineNum"> 97 </span> : * Compute the CRC-32 (Castagnoli) without the IV.</a>
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<span class="lineNum"> 98 </span> : */
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<span class="lineNum"> 99 </span><span class="lineCov"> 337 : static inline uint32_t crc32c_gen_plain(uint32_t crc, const unsigned char* ptr, unsigned size)</span>
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<span class="lineNum"> 100 </span> : {
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<span class="lineNum"> 101 </span><span class="lineCov"> 20972361 : while (size >= 4) {</span>
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<span class="lineNum"> 102 </span><span class="lineCov"> 20971687 : crc ^= ptr[0] | (uint32_t)ptr[1] << 8 | (uint32_t)ptr[2] << 16 | (uint32_t)ptr[3] << 24;</span>
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<span class="lineNum"> 103 </span><span class="lineCov"> 20971687 : crc = CRC32C_3[crc & 0xff] ^ CRC32C_2[(crc >> 8) & 0xff] ^ CRC32C_1[(crc >> 16) & 0xff] ^ CRC32C_0[crc >> 24];</span>
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<span class="lineNum"> 104 </span><span class="lineCov"> 20971687 : ptr += 4;</span>
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<span class="lineNum"> 105 </span><span class="lineCov"> 20971687 : size -= 4;</span>
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<span class="lineNum"> 106 </span> : }
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<span class="lineNum"> 107 </span> :
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<span class="lineNum"> 108 </span><span class="lineCov"> 683 : while (size) {</span>
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<span class="lineNum"> 109 </span><span class="lineCov"> 9 : crc = CRC32C_0[(crc ^ *ptr) & 0xff] ^ (crc >> 8);</span>
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<span class="lineNum"> 110 </span><span class="lineCov"> 9 : ++ptr;</span>
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<span class="lineNum"> 111 </span><span class="lineCov"> 9 : --size;</span>
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<span class="lineNum"> 112 </span> : }
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<span class="lineNum"> 113 </span> :
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<span class="lineNum"> 114 </span><span class="lineCov"> 337 : return crc;</span>
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<span class="lineNum"> 115 </span> : }
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<span class="lineNum"> 116 </span> :
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<span class="lineNum"> 117 </span> : /**
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<span class="lineNum"> 118 </span> : * Compute the CRC-32 (Castagnoli) without the IV.
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<a name="119"><span class="lineNum"> 119 </span> : */</a>
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<span class="lineNum"> 120 </span> : #if HAVE_SSE42
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<span class="lineNum"> 121 </span><span class="lineCov"> 21365830 : static inline uint32_t crc32c_x86_plain(uint32_t crc, const unsigned char* ptr, unsigned size)</span>
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<span class="lineNum"> 122 </span> : {
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<span class="lineNum"> 123 </span> : #ifdef CONFIG_X86_64
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<span class="lineNum"> 124 </span> : uint64_t crc64 = crc;
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<span class="lineNum"> 125 </span> : while (size >= 8) {
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<span class="lineNum"> 126 </span> : asm("crc32q %1, %0\n" : "+r" (crc64) : "m" (*(const uint64_t*)ptr));
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<span class="lineNum"> 127 </span> : ptr += 8;
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<span class="lineNum"> 128 </span> : size -= 8;
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<span class="lineNum"> 129 </span> : }
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<span class="lineNum"> 130 </span> : crc = crc64;
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<span class="lineNum"> 131 </span> : #else
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<span class="lineNum"> 132 </span><span class="lineCov"> 392452749 : while (size >= 4) {</span>
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<span class="lineNum"> 133 </span><span class="lineCov"> 349721089 : asm("crc32l %1, %0\n" : "+r" (crc) : "m" (*(const uint32_t*)ptr));</span>
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<span class="lineNum"> 134 </span><span class="lineCov"> 349721089 : ptr += 4;</span>
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<span class="lineNum"> 135 </span><span class="lineCov"> 349721089 : size -= 4;</span>
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<span class="lineNum"> 136 </span> : }
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<span class="lineNum"> 137 </span> : #endif
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<span class="lineNum"> 138 </span><span class="lineCov"> 62466405 : while (size) {</span>
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<span class="lineNum"> 139 </span><span class="lineCov"> 19734745 : asm("crc32b %1, %0\n" : "+r" (crc) : "m" (*ptr));</span>
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<span class="lineNum"> 140 </span><span class="lineCov"> 19734745 : ++ptr;</span>
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<span class="lineNum"> 141 </span><span class="lineCov"> 19734745 : --size;</span>
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<span class="lineNum"> 142 </span> : }
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<span class="lineNum"> 143 </span> :
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<span class="lineNum"> 144 </span><span class="lineCov"> 21365830 : return crc;</span>
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<span class="lineNum"> 145 </span> : }
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<span class="lineNum"> 146 </span> : #endif
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<span class="lineNum"> 147 </span> :
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<span class="lineNum"> 148 </span> : /**
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<a name="149"><span class="lineNum"> 149 </span> : * Compute CRC-32 (Castagnoli) without the IV.</a>
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<span class="lineNum"> 150 </span> : */
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<span class="lineNum"> 151 </span><span class="lineCov"> 20719227 : static inline uint32_t crc32c_plain(uint32_t crc, const unsigned char* ptr, unsigned size)</span>
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<span class="lineNum"> 152 </span> : {
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<span class="lineNum"> 153 </span> : #if HAVE_SSE42
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<span class="lineNum"> 154 </span><span class="lineCov"> 20719227 : if (tommy_likely(crc_x86)) {</span>
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<span class="lineNum"> 155 </span><span class="lineCov"> 20719227 : return crc32c_x86_plain(crc, ptr, size);</span>
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<span class="lineNum"> 156 </span> : }
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<span class="lineNum"> 157 </span> : #endif
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<span class="lineNum"> 158 </span><span class="lineNoCov"> 0 : return crc32c_gen_plain(crc, ptr, size);</span>
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<span class="lineNum"> 159 </span> : }
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<span class="lineNum"> 160 </span> :
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<span class="lineNum"> 161 </span> : /**
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<span class="lineNum"> 162 </span> : * Compute the CRC-32 (Castagnoli)
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<span class="lineNum"> 163 </span> : */
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<span class="lineNum"> 164 </span> : uint32_t (*crc32c)(uint32_t crc, const unsigned char* ptr, unsigned size);
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<span class="lineNum"> 165 </span> :
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<span class="lineNum"> 166 </span> : /**
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<span class="lineNum"> 167 </span> : * Internal entry points for testing.
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<span class="lineNum"> 168 </span> : */
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<span class="lineNum"> 169 </span> : uint32_t crc32c_gen(uint32_t crc, const unsigned char* ptr, unsigned size);
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<span class="lineNum"> 170 </span> : uint32_t crc32c_x86(uint32_t crc, const unsigned char* ptr, unsigned size);
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<span class="lineNum"> 171 </span> :
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<span class="lineNum"> 172 </span> : /**
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<span class="lineNum"> 173 </span> : * Initialize the CRC-32 (Castagnoli) support.
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<span class="lineNum"> 174 </span> : */
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<span class="lineNum"> 175 </span> : void crc32c_init(void);
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<span class="lineNum"> 176 </span> :
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<span class="lineNum"> 177 </span> : /****************************************************************************/
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<span class="lineNum"> 178 </span> : /* hash */
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<span class="lineNum"> 179 </span> :
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<span class="lineNum"> 180 </span> : /**
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<span class="lineNum"> 181 </span> : * Size of the hash.
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<span class="lineNum"> 182 </span> : */
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<span class="lineNum"> 183 </span> : #define HASH_MAX 16
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<span class="lineNum"> 184 </span> :
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<span class="lineNum"> 185 </span> : /**
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<span class="lineNum"> 186 </span> : * Hash kinds.
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<span class="lineNum"> 187 </span> : */
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<span class="lineNum"> 188 </span> : #define HASH_UNDEFINED 0
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<span class="lineNum"> 189 </span> : #define HASH_MURMUR3 1
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<span class="lineNum"> 190 </span> : #define HASH_SPOOKY2 2
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<span class="lineNum"> 191 </span> :
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<span class="lineNum"> 192 </span> : /**
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<span class="lineNum"> 193 </span> : * Compute the HASH of a memory block.
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<span class="lineNum"> 194 </span> : * Seed is a 128 bit vector.
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<span class="lineNum"> 195 </span> : */
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<span class="lineNum"> 196 </span> : void memhash(unsigned kind, const unsigned char* seed, void* digest, const void* src, size_t size);
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<span class="lineNum"> 197 </span> :
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<span class="lineNum"> 198 </span> : /**
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<span class="lineNum"> 199 </span> : * Return the hash name.
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<span class="lineNum"> 200 </span> : */
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<span class="lineNum"> 201 </span> : const char* hash_config_name(unsigned kind);
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<span class="lineNum"> 202 </span> :
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<span class="lineNum"> 203 </span> : /**
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<span class="lineNum"> 204 </span> : * Count the number of different bits in the two buffers.
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<span class="lineNum"> 205 </span> : */
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<span class="lineNum"> 206 </span> : unsigned memdiff(const unsigned char* data1, const unsigned char* data2, size_t size);
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<span class="lineNum"> 207 </span> :
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<span class="lineNum"> 208 </span> : /****************************************************************************/
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<span class="lineNum"> 209 </span> : /* lock */
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<span class="lineNum"> 210 </span> :
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<span class="lineNum"> 211 </span> : /**
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<span class="lineNum"> 212 </span> : * Create and locks the lock file.
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<span class="lineNum"> 213 </span> : * Return -1 on error, otherwise it's the file handle to pass to lock_unlock().
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<span class="lineNum"> 214 </span> : */
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<span class="lineNum"> 215 </span> : int lock_lock(const char* file);
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<span class="lineNum"> 216 </span> :
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<span class="lineNum"> 217 </span> : /**
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<span class="lineNum"> 218 </span> : * Unlock the lock file.
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<span class="lineNum"> 219 </span> : * Return -1 on error.
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<span class="lineNum"> 220 </span> : */
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<span class="lineNum"> 221 </span> : int lock_unlock(int f);
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<span class="lineNum"> 222 </span> :
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<span class="lineNum"> 223 </span> : #endif
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<span class="lineNum"> 224 </span> :
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</pre>
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</td>
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</tr>
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</table>
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<br>
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<table width="100%" border=0 cellspacing=0 cellpadding=0>
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<tr><td class="ruler"><img src="../glass.png" width=3 height=3 alt=""></td></tr>
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<tr><td class="versionInfo">Generated by: <a href="http://ltp.sourceforge.net/coverage/lcov.php" target="_parent">LCOV version 1.10</a></td></tr>
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</table>
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<br>
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</body>
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</html>
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