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authorEnrico Zini <enrico@enricozini.org>2009-09-29 15:08:02 +0100
committerEnrico Zini <enrico@enricozini.org>2009-09-29 15:08:02 +0100
commit006621455482edd8abf46a05292120745f99f7ec (patch)
treeff1318ccc409a3dd0519035ce2949ac8a48e969e /rep/usr/include/c++/4.3/ext/atomicity.h.gcov.html
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+ <td class="headerValue" width="20%">2008-08-14</td>
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+ <td class="headerValue" width="20%">0.0 %</td>
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+ <tr>
+ <td><pre class="source">
+<span class="lineNum"> 1 </span> : // Support for atomic operations -*- C++ -*-
+<span class="lineNum"> 2 </span> :
+<span class="lineNum"> 3 </span> : // Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
+<span class="lineNum"> 4 </span> : //
+<span class="lineNum"> 5 </span> : // This file is part of the GNU ISO C++ Library. This library is free
+<span class="lineNum"> 6 </span> : // software; you can redistribute it and/or modify it under the
+<span class="lineNum"> 7 </span> : // terms of the GNU General Public License as published by the
+<span class="lineNum"> 8 </span> : // Free Software Foundation; either version 2, or (at your option)
+<span class="lineNum"> 9 </span> : // any later version.
+<span class="lineNum"> 10 </span> :
+<span class="lineNum"> 11 </span> : // This library is distributed in the hope that it will be useful,
+<span class="lineNum"> 12 </span> : // but WITHOUT ANY WARRANTY; without even the implied warranty of
+<span class="lineNum"> 13 </span> : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+<span class="lineNum"> 14 </span> : // GNU General Public License for more details.
+<span class="lineNum"> 15 </span> :
+<span class="lineNum"> 16 </span> : // You should have received a copy of the GNU General Public License along
+<span class="lineNum"> 17 </span> : // with this library; see the file COPYING. If not, write to the Free
+<span class="lineNum"> 18 </span> : // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+<span class="lineNum"> 19 </span> : // USA.
+<span class="lineNum"> 20 </span> :
+<span class="lineNum"> 21 </span> : // As a special exception, you may use this file as part of a free software
+<span class="lineNum"> 22 </span> : // library without restriction. Specifically, if other files instantiate
+<span class="lineNum"> 23 </span> : // templates or use macros or inline functions from this file, or you compile
+<span class="lineNum"> 24 </span> : // this file and link it with other files to produce an executable, this
+<span class="lineNum"> 25 </span> : // file does not by itself cause the resulting executable to be covered by
+<span class="lineNum"> 26 </span> : // the GNU General Public License. This exception does not however
+<span class="lineNum"> 27 </span> : // invalidate any other reasons why the executable file might be covered by
+<span class="lineNum"> 28 </span> : // the GNU General Public License.
+<span class="lineNum"> 29 </span> :
+<span class="lineNum"> 30 </span> : /** @file atomicity.h
+<span class="lineNum"> 31 </span> : * This is an internal header file, included by other library headers.
+<span class="lineNum"> 32 </span> : * You should not attempt to use it directly.
+<span class="lineNum"> 33 </span> : */
+<span class="lineNum"> 34 </span> :
+<span class="lineNum"> 35 </span> : #ifndef _GLIBCXX_ATOMICITY_H
+<span class="lineNum"> 36 </span> : #define _GLIBCXX_ATOMICITY_H 1
+<span class="lineNum"> 37 </span> :
+<span class="lineNum"> 38 </span> : #include &lt;bits/c++config.h&gt;
+<span class="lineNum"> 39 </span> : #include &lt;bits/gthr.h&gt;
+<span class="lineNum"> 40 </span> : #include &lt;bits/atomic_word.h&gt;
+<span class="lineNum"> 41 </span> :
+<span class="lineNum"> 42 </span> : _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
+<span class="lineNum"> 43 </span> :
+<span class="lineNum"> 44 </span> : // Functions for portable atomic access.
+<span class="lineNum"> 45 </span> : // To abstract locking primitives across all thread policies, use:
+<span class="lineNum"> 46 </span> : // __exchange_and_add_dispatch
+<span class="lineNum"> 47 </span> : // __atomic_add_dispatch
+<span class="lineNum"> 48 </span> : #ifdef _GLIBCXX_ATOMIC_BUILTINS
+<span class="lineNum"> 49 </span> : static inline _Atomic_word
+<span class="lineNum"> 50 </span><span class="lineNoCov"> 0 : __exchange_and_add(volatile _Atomic_word* __mem, int __val)</span>
+<span class="lineNum"> 51 </span><span class="lineNoCov"> 0 : { return __sync_fetch_and_add(__mem, __val); }</span>
+<span class="lineNum"> 52 </span> :
+<span class="lineNum"> 53 </span> : static inline void
+<span class="lineNum"> 54 </span> : __atomic_add(volatile _Atomic_word* __mem, int __val)
+<span class="lineNum"> 55 </span> : { __sync_fetch_and_add(__mem, __val); }
+<span class="lineNum"> 56 </span> : #else
+<span class="lineNum"> 57 </span> : _Atomic_word
+<span class="lineNum"> 58 </span> : __attribute__ ((__unused__))
+<span class="lineNum"> 59 </span> : __exchange_and_add(volatile _Atomic_word*, int);
+<span class="lineNum"> 60 </span> :
+<span class="lineNum"> 61 </span> : void
+<span class="lineNum"> 62 </span> : __attribute__ ((__unused__))
+<span class="lineNum"> 63 </span> : __atomic_add(volatile _Atomic_word*, int);
+<span class="lineNum"> 64 </span> : #endif
+<span class="lineNum"> 65 </span> :
+<span class="lineNum"> 66 </span> : static inline _Atomic_word
+<span class="lineNum"> 67 </span><span class="lineNoCov"> 0 : __exchange_and_add_single(_Atomic_word* __mem, int __val)</span>
+<span class="lineNum"> 68 </span> : {
+<span class="lineNum"> 69 </span><span class="lineNoCov"> 0 : _Atomic_word __result = *__mem;</span>
+<span class="lineNum"> 70 </span><span class="lineNoCov"> 0 : *__mem += __val;</span>
+<span class="lineNum"> 71 </span><span class="lineNoCov"> 0 : return __result;</span>
+<span class="lineNum"> 72 </span> : }
+<span class="lineNum"> 73 </span> :
+<span class="lineNum"> 74 </span> : static inline void
+<span class="lineNum"> 75 </span> : __atomic_add_single(_Atomic_word* __mem, int __val)
+<span class="lineNum"> 76 </span> : { *__mem += __val; }
+<span class="lineNum"> 77 </span> :
+<span class="lineNum"> 78 </span> : static inline _Atomic_word
+<span class="lineNum"> 79 </span> : __attribute__ ((__unused__))
+<span class="lineNum"> 80 </span><span class="lineNoCov"> 0 : __exchange_and_add_dispatch(_Atomic_word* __mem, int __val)</span>
+<span class="lineNum"> 81 </span> : {
+<span class="lineNum"> 82 </span> : #ifdef __GTHREADS
+<span class="lineNum"> 83 </span><span class="lineNoCov"> 0 : if (__gthread_active_p())</span>
+<span class="lineNum"> 84 </span><span class="lineNoCov"> 0 : return __exchange_and_add(__mem, __val);</span>
+<span class="lineNum"> 85 </span> : else
+<span class="lineNum"> 86 </span><span class="lineNoCov"> 0 : return __exchange_and_add_single(__mem, __val);</span>
+<span class="lineNum"> 87 </span> : #else
+<span class="lineNum"> 88 </span> : return __exchange_and_add_single(__mem, __val);
+<span class="lineNum"> 89 </span> : #endif
+<span class="lineNum"> 90 </span> : }
+<span class="lineNum"> 91 </span> :
+<span class="lineNum"> 92 </span> : static inline void
+<span class="lineNum"> 93 </span> : __attribute__ ((__unused__))
+<span class="lineNum"> 94 </span> : __atomic_add_dispatch(_Atomic_word* __mem, int __val)
+<span class="lineNum"> 95 </span> : {
+<span class="lineNum"> 96 </span> : #ifdef __GTHREADS
+<span class="lineNum"> 97 </span> : if (__gthread_active_p())
+<span class="lineNum"> 98 </span> : __atomic_add(__mem, __val);
+<span class="lineNum"> 99 </span> : else
+<span class="lineNum"> 100 </span> : __atomic_add_single(__mem, __val);
+<span class="lineNum"> 101 </span> : #else
+<span class="lineNum"> 102 </span> : __atomic_add_single(__mem, __val);
+<span class="lineNum"> 103 </span> : #endif
+<span class="lineNum"> 104 </span> : }
+<span class="lineNum"> 105 </span> :
+<span class="lineNum"> 106 </span> : _GLIBCXX_END_NAMESPACE
+<span class="lineNum"> 107 </span> :
+<span class="lineNum"> 108 </span> : // Even if the CPU doesn't need a memory barrier, we need to ensure
+<span class="lineNum"> 109 </span> : // that the compiler doesn't reorder memory accesses across the
+<span class="lineNum"> 110 </span> : // barriers.
+<span class="lineNum"> 111 </span> : #ifndef _GLIBCXX_READ_MEM_BARRIER
+<span class="lineNum"> 112 </span> : #define _GLIBCXX_READ_MEM_BARRIER __asm __volatile (&quot;&quot;:::&quot;memory&quot;)
+<span class="lineNum"> 113 </span> : #endif
+<span class="lineNum"> 114 </span> : #ifndef _GLIBCXX_WRITE_MEM_BARRIER
+<span class="lineNum"> 115 </span> : #define _GLIBCXX_WRITE_MEM_BARRIER __asm __volatile (&quot;&quot;:::&quot;memory&quot;)
+<span class="lineNum"> 116 </span> : #endif
+<span class="lineNum"> 117 </span> :
+<span class="lineNum"> 118 </span> : #endif
+</pre>
+ </td>
+ </tr>
+ </table>
+ <br>
+
+ <table width="100%" border=0 cellspacing=0 cellpadding=0>
+ <tr><td class="ruler"><img src="../../../../../glass.png" width=3 height=3 alt=""></td></tr>
+ <tr><td class="versionInfo">Generated by: <a href="http://ltp.sourceforge.net/coverage/lcov.php" target="_parent">LTP GCOV extension version 1.6</a></td></tr>
+ </table>
+ <br>
+
+</body>
+</html>
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