| [12] | 1 | <?xml version="1.0" encoding="utf-8" ?> |
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| 2 | <!DOCTYPE library PUBLIC "-//Boost//DTD BoostBook XML V1.0//EN" |
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| 3 | "http://www.boost.org/tools/boostbook/dtd/boostbook.dtd" [ |
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| 4 | <!ENTITY % threads.entities SYSTEM "entities.xml"> |
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| 5 | %threads.entities; |
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| 6 | ]> |
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| 7 | <section id="thread.configuration" last-revision="$Date: 2004/07/17 04:33:59 $"> |
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| 8 | <title>Configuration</title> |
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| 9 | <para>&Boost.Threads; uses several configuration macros in <boost/config.hpp>, |
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| 10 | as well as configuration macros meant to be supplied by the application. These |
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| 11 | macros are documented here. |
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| 12 | </para> |
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| 13 | <section id="thread.configuration.public"> |
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| 14 | <title>Library Defined Public Macros</title> |
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| 15 | <para> |
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| 16 | These macros are defined by &Boost.Threads; but are expected to be used |
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| 17 | by application code. |
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| 18 | </para> |
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| 19 | <informaltable> |
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| 20 | <tgroup cols="2"> |
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| 21 | <thead> |
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| 22 | <row> |
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| 23 | <entry>Macro</entry> |
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| 24 | <entry>Meaning</entry> |
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| 25 | </row> |
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| 26 | </thead> |
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| 27 | <tbody> |
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| 28 | <row> |
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| 29 | <entry>BOOST_HAS_THREADS</entry> |
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| 30 | <entry> |
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| 31 | Indicates that threading support is available. This means both that there |
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| 32 | is a platform specific implementation for &Boost.Threads; and that |
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| 33 | threading support has been enabled in a platform specific manner. For instance, |
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| 34 | on the Win32 platform there's an implementation for &Boost.Threads; |
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| 35 | but unless the program is compiled against one of the multithreading runtimes |
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| 36 | (often determined by the compiler predefining the macro _MT) the BOOST_HAS_THREADS |
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| 37 | macro remains undefined. |
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| 38 | </entry> |
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| 39 | </row> |
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| 40 | </tbody> |
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| 41 | </tgroup> |
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| 42 | </informaltable> |
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| 43 | </section> |
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| 44 | <section id="thread.configuration.implementation"> |
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| 45 | <title>Library Defined Implementation Macros</title> |
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| 46 | <para> |
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| 47 | These macros are defined by &Boost.Threads; and are implementation details |
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| 48 | of interest only to implementors. |
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| 49 | </para> |
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| 50 | <informaltable> |
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| 51 | <tgroup cols="2"> |
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| 52 | <thead> |
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| 53 | <row> |
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| 54 | <entry>Macro</entry> |
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| 55 | <entry>Meaning</entry> |
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| 56 | </row> |
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| 57 | </thead> |
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| 58 | <tbody> |
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| 59 | <row> |
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| 60 | <entry>BOOST_HAS_WINTHREADS</entry> |
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| 61 | <entry> |
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| 62 | Indicates that the platform has the Microsoft Win32 threading libraries, |
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| 63 | and that they should be used to implement &Boost.Threads;. |
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| 64 | </entry> |
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| 65 | </row> |
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| 66 | <row> |
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| 67 | <entry>BOOST_HAS_PTHREADS</entry> |
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| 68 | <entry> |
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| 69 | Indicates that the platform has the POSIX pthreads libraries, and that |
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| 70 | they should be used to implement &Boost.Threads;. |
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| 71 | </entry> |
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| 72 | </row> |
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| 73 | <row> |
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| 74 | <entry>BOOST_HAS_FTIME</entry> |
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| 75 | <entry> |
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| 76 | Indicates that the implementation should use GetSystemTimeAsFileTime() |
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| 77 | and the FILETIME type to calculate the current time. This is an implementation |
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| 78 | detail used by boost::detail::getcurtime(). |
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| 79 | </entry> |
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| 80 | </row> |
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| 81 | <row> |
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| 82 | <entry>BOOST_HAS_GETTTIMEOFDAY</entry> |
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| 83 | <entry> |
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| 84 | Indicates that the implementation should use gettimeofday() to calculate |
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| 85 | the current time. This is an implementation detail used by boost::detail::getcurtime(). |
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| 86 | </entry> |
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| 87 | </row> |
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| 88 | </tbody> |
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| 89 | </tgroup> |
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| 90 | </informaltable> |
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| 91 | </section> |
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| 92 | </section> |
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