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4<title>Configuration</title>
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24</div>
25<div class="section" lang="en">
26<div class="titlepage"><div><div><h3 class="title">
27<a name="thread.configuration"></a>Configuration</h3></div></div></div>
28<div class="toc"><dl>
29<dt><span class="section"><a href="configuration.html#thread.configuration.public">Library Defined Public Macros</a></span></dt>
30<dt><span class="section"><a href="configuration.html#thread.configuration.implementation">Library Defined Implementation Macros</a></span></dt>
31</dl></div>
32<p><span class="bold"><strong>Boost.Threads</strong></span> uses several configuration macros in &lt;boost/config.hpp&gt;,
33        as well as configuration macros meant to be supplied by the application. These
34        macros are documented here.
35        </p>
36<div class="section" lang="en">
37<div class="titlepage"><div><div><h4 class="title">
38<a name="thread.configuration.public"></a>Library Defined Public Macros</h4></div></div></div>
39<p>
40        These macros are defined by <span class="bold"><strong>Boost.Threads</strong></span> but are expected to be used
41        by application code.
42                </p>
43<div class="informaltable"><table class="table">
44<colgroup>
45<col>
46<col>
47</colgroup>
48<thead><tr>
49<th>Macro</th>
50<th>Meaning</th>
51</tr></thead>
52<tbody><tr>
53<td>BOOST_HAS_THREADS</td>
54<td>
55        Indicates that threading support is available. This means both that there
56        is a platform specific implementation for <span class="bold"><strong>Boost.Threads</strong></span> and that
57        threading support has been enabled in a platform specific manner. For instance,
58        on the Win32 platform there's an implementation for <span class="bold"><strong>Boost.Threads</strong></span>
59        but unless the program is compiled against one of the multithreading runtimes
60        (often determined by the compiler predefining the macro _MT) the BOOST_HAS_THREADS
61        macro remains undefined.
62                                                </td>
63</tr></tbody>
64</table></div>
65</div>
66<div class="section" lang="en">
67<div class="titlepage"><div><div><h4 class="title">
68<a name="thread.configuration.implementation"></a>Library Defined Implementation Macros</h4></div></div></div>
69<p>
70        These macros are defined by <span class="bold"><strong>Boost.Threads</strong></span> and are implementation details
71        of interest only to implementors.
72                </p>
73<div class="informaltable"><table class="table">
74<colgroup>
75<col>
76<col>
77</colgroup>
78<thead><tr>
79<th>Macro</th>
80<th>Meaning</th>
81</tr></thead>
82<tbody>
83<tr>
84<td>BOOST_HAS_WINTHREADS</td>
85<td>
86        Indicates that the platform has the Microsoft Win32 threading libraries,
87        and that they should be used to implement <span class="bold"><strong>Boost.Threads</strong></span>.
88                                    </td>
89</tr>
90<tr>
91<td>BOOST_HAS_PTHREADS</td>
92<td>
93        Indicates that the platform has the POSIX pthreads libraries, and that
94        they should be used to implement <span class="bold"><strong>Boost.Threads</strong></span>.
95                                                </td>
96</tr>
97<tr>
98<td>BOOST_HAS_FTIME</td>
99<td>
100        Indicates that the implementation should use GetSystemTimeAsFileTime()
101        and the FILETIME type to calculate the current time. This is an implementation
102        detail used by boost::detail::getcurtime().
103                                                </td>
104</tr>
105<tr>
106<td>BOOST_HAS_GETTTIMEOFDAY</td>
107<td>
108        Indicates that the implementation should use gettimeofday() to calculate
109        the current time. This is an implementation detail used by boost::detail::getcurtime().
110                                                </td>
111</tr>
112</tbody>
113</table></div>
114</div>
115</div>
116<table width="100%"><tr>
117<td align="left"><small><p>Last revised: July 17, 2004 at 04:33:59 GMT</p></small></td>
118<td align="right"><small>Copyright © 2001-2003 William E. Kempf</small></td>
119</tr></table>
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