projects / ceph.git / blame
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| 7c673cae FG |
1 | <html> |
| 2 | ||
| 3 | <head> | |
| 4 | <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> | |
| 5 | <meta name="GENERATOR" content="Microsoft FrontPage 5.0"> | |
| 6 | <meta name="ProgId" content="FrontPage.Editor.Document"> | |
| 7 | <title>Boost Timer Library</title> | |
| 8 | <style type="text/css"> | |
| 9 | ins {background-color:#A0FFA0} | |
| 10 | del {background-color:#FFA0A0} | |
| 11 | body | |
| 12 | { | |
| 13 | font-family: sans-serif; | |
| 14 | max-width : 8.5in; | |
| 15 | margin: 1em; | |
| 16 | } | |
| 17 | </style> | |
| 18 | </head> | |
| 19 | ||
| 20 | <body> | |
| 21 | <table border="0" cellpadding="5" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="750"> | |
| 22 | <tr> | |
| 23 | <td width="300"> | |
| 24 | <a href="../../../index.htm"> | |
| 25 | <img src="../../../boost.png" alt="boost.png (6897 bytes)" align="middle" width="300" height="86" border="0"></a></td> | |
| 26 | <td align="middle" width="430"> | |
| 27 | <font size="7">Timer Library<br> | |
| 28 | Version 2</font> | |
| 29 | </td> | |
| 30 | </tr> | |
| 31 | </table> | |
| 32 | ||
| 33 | <table border="0" cellpadding="5" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" bgcolor="#D7EEFF" width="100%"> | |
| 34 | <tr> | |
| 35 | <td><a href="index.html">Timer Home</a> | |
| 36 | <a href="cpu_timers.html">CPU timers</a> | |
| 37 | <a href="original_timer.html">Original timers</a> | |
| 38 | </td> | |
| 39 | </tr> | |
| 40 | </table> | |
| 41 | ||
| 42 | <p>"How long does my C++ code take to run?"<p>The Boost Timer library | |
| 43 | answers that question and does so portably, with as little as one #include and one | |
| 44 | additional line of code.<p>The Boost Timer library has two distinct sets of | |
| 45 | components:<ul> | |
| 46 | <li>If you are new to the library, please go directly to the version 2 | |
| 47 | <a href="cpu_timers.html">CPU timers</a> page.</li> | |
| 48 | <li>If you are interested in | |
| 49 | the original library, now deprecated, read on below.</li> | |
| 50 | </ul> | |
| 51 | <h2> | |
| 52 | <a href="cpu_timers.html">CPU timers</a></h2> | |
| 53 | <p>These version 2 components conform to current Boost practice:</p> | |
| 54 | <ul> | |
| 55 | <li>The interfaces and their semantics are the same across all platforms.</li> | |
| 56 | <li>The internal implementation uses operating system specific APIs to achieve | |
| 57 | higher precision and supply functionality not otherwise available. </li> | |
| 58 | <li>The headers live in a sub-directory, <code><boost/timer/...></code>.</li> | |
| 59 | <li>The content is in a sub-namespace, <code>boost::timer</code>.</li> | |
| 60 | </ul> | |
| 61 | <h2 dir="ltr"> | |
| 62 | <a href="original_timer.html">Original timers</a></h2> | |
| 63 | <p>These version 1 components are deprecated. They date from the earliest days | |
| 64 | of Boost and do not conform to current Boost practice:</p> | |
| 65 | <ul> | |
| 66 | <li>The interfaces are the same across all platforms, but the semantics differ | |
| 67 | according to platform. Wall-clock time is measured on Windows, while CPU time | |
| 68 | is measured on POSIX-like systems.</li> | |
| 69 | <li>The internal implementation uses only C/C++ standard library functions, so | |
| 70 | cannot supply desirable precision and functionality.</li> | |
| 71 | <li>The headers live in the main Boost header directory.</li> | |
| 72 | <li>The content are in namespace <code>boost</code>.</li> | |
| 73 | </ul> | |
| 74 | <hr> | |
| 75 | <p><font size="2">Revised: | |
| 76 | <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B %Y" startspan -->07 October 2011<!--webbot bot="Timestamp" endspan i-checksum="32191" --></font></p> | |
| 77 | ||
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