<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"> <title>tbx_timing.h Source File</title> <link href="doxygen.css" rel="stylesheet" type="text/css"> </head><body> <!-- Generated by Doxygen 1.2.15 --> <center> <a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="annotated.html">Data Structures</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Data Fields</a> <a class="qindex" href="globals.html">Globals</a> </center> <hr><h1>tbx_timing.h</h1><div class="fragment"><pre>00001 <font class="preprocessor">#ifndef TBX_TIMING_H</font> 00002 <font class="preprocessor"></font><font class="preprocessor">#define TBX_TIMING_H</font> 00003 <font class="preprocessor"></font> 00004 <font class="preprocessor">#include <sys/types.h></font> 00005 <font class="preprocessor">#include <sys/time.h></font> 00006 00007 <font class="comment">/*</font> 00008 <font class="comment"> * For the user interested in High resolution timer, to my knowledge </font> 00009 <font class="comment"> * the best library is "RTAI", unfortunately it works only on Linux OS</font> 00010 <font class="comment"> */</font> 00011 00012 00013 <font class="keyword">typedef</font> <font class="keyword">union </font>u_tbx_tick 00014 { 00015 <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> <font class="keywordtype">long</font> tick; 00016 00017 <font class="keyword">struct</font> 00018 <font class="keyword"> </font>{ 00019 <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> low; 00020 <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> high; 00021 } sub; 00022 00023 <font class="keyword">struct </font>timeval timev; 00024 } tbx_tick_t, *p_tbx_tick_t; 00025 00026 <font class="preprocessor">#if defined(SCS_TYPECPU_ITANIUM)</font> 00027 <font class="preprocessor"></font><font class="preprocessor">#define TBX_GET_TICK(t) \</font> 00028 <font class="preprocessor"> __asm__ __volatile__("mov %0=ar.itc" : "=r"((t).tick) :: "memory")</font> 00029 <font class="preprocessor"></font><font class="preprocessor">#define TBX_TICK_RAW_DIFF(t1, t2) \</font> 00030 <font class="preprocessor"> ((t2).tick - (t1).tick)</font> 00031 <font class="preprocessor"></font> 00032 <font class="comment">/* Hum hum... Here we suppose that X86ARCH => Pentium! */</font> 00033 <font class="preprocessor">#elif defined(SCS_TYPECPU_X86)</font> 00034 <font class="preprocessor"></font><font class="preprocessor">#define TBX_GET_TICK(t) \</font> 00035 <font class="preprocessor"> __asm__ volatile("cpuid; rdtsc" : "=a" ((t).sub.low), "=d" ((t).sub.high))</font> 00036 <font class="preprocessor"></font><font class="preprocessor">#define TBX_TICK_RAW_DIFF(t1, t2) \</font> 00037 <font class="preprocessor"> ((t2).tick - (t1).tick)</font> 00038 <font class="preprocessor"></font> 00039 <font class="preprocessor">#elif defined(SCS_TYPECPU_ALPHA)</font> 00040 <font class="preprocessor"></font><font class="preprocessor">#define TBX_GET_TICK(t) \</font> 00041 <font class="preprocessor"> __asm__ volatile("rpcc %0\n\t" : "=r"((t).tick))</font> 00042 <font class="preprocessor"></font><font class="preprocessor">#define TBX_TICK_RAW_DIFF(t1, t2) \</font> 00043 <font class="preprocessor"> (((t2).tick & 0xFFFFFFFF) - ((t1).tick & 0xFFFFFFFF))</font> 00044 <font class="preprocessor"></font> 00045 <font class="preprocessor">#elif defined(SCS_TYPECPU_SPARC)</font> 00046 <font class="preprocessor"></font><font class="preprocessor">#define TBX_GET_TICK(t) \</font> 00047 <font class="preprocessor"> (t).tick = gethrtime()</font> 00048 <font class="preprocessor"></font><font class="preprocessor">#define TBX_TICK_RAW_DIFF(t1, t2) \</font> 00049 <font class="preprocessor"> ((t2).tick - (t1).tick)</font> 00050 <font class="preprocessor"></font><font class="comment">/*</font> 00051 <font class="comment">The following instructions are done only for ppc 601 (which is an old processor!)</font> 00052 <font class="comment">#elif defined(SCS_TYPECPU_POWERPC)</font> 00053 <font class="comment">#define TBX_GET_TICK(t) \</font> 00054 <font class="comment"> __asm__ volatile("li %0,64;mtspr UMMCR0,%0;mfspr %0,UPMC1": "=r"((t).sub.low))</font> 00055 <font class="comment">#define TBX_TICK_RAW_DIFF(t1, t2) \</font> 00056 <font class="comment"> ((t2).tick - (t1).tick)</font> 00057 <font class="comment"></font> 00058 <font class="comment"></font> 00059 <font class="comment">The following one is extracted from Motorola reference manual for 32 bits PPCs.</font> 00060 <font class="comment">But apparently it give randomly numbers, may be the clock generator is a random generator !</font> 00061 <font class="comment">Silly processor !!!!</font> 00062 <font class="comment"></font> 00063 <font class="comment">#elif defined(SCS_TYPECPU_POWERPC)</font> 00064 <font class="comment">#define TBX_GET_TICK(t) \</font> 00065 <font class="comment"> {unsigned long chk; \</font> 00066 <font class="comment"> __asm__ volatile("0: mftbu %0; mftb %1; mftbu %2; cmpw %2, %0; bne 0b" \</font> 00067 <font class="comment"> : "=r" ((t).sub.low), "=r" ((t).sub.high), "=r" (chk) );}</font> 00068 <font class="comment">*/</font> 00069 <font class="preprocessor">#define TBX_TICK_RAW_DIFF(t1, t2) \</font> 00070 <font class="preprocessor"> ((t2).tick - (t1).tick)</font> 00071 <font class="preprocessor"></font> 00072 <font class="preprocessor">#else</font> 00073 <font class="preprocessor"></font><font class="preprocessor">#define TBX_GET_TICK(t) \</font> 00074 <font class="preprocessor"> gettimeofday(&(t).timev, 0)</font> 00075 <font class="preprocessor"></font><font class="preprocessor">#define TBX_TICK_RAW_DIFF(t1, t2) \</font> 00076 <font class="preprocessor"> ((t2.timev.tv_sec * 1000000L + t2.timev.tv_usec) - \</font> 00077 <font class="preprocessor"> (t1.timev.tv_sec * 1000000L + t1.timev.tv_usec))</font> 00078 <font class="preprocessor"></font> 00079 <font class="preprocessor">#endif</font> 00080 <font class="preprocessor"></font> 00081 <font class="preprocessor">#define TBX_TICK_DIFF(t1, t2) (TBX_TICK_RAW_DIFF(t1, t2) - tbx_residual + 1)</font> 00082 <font class="preprocessor"></font><font class="preprocessor">#define TBX_TIMING_DELAY(t1, t2) tbx_tick2usec(TBX_TICK_DIFF(t1, t2))</font> 00083 <font class="preprocessor"></font> 00084 <font class="keyword">extern</font> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> <font class="keywordtype">long</font> tbx_residual; 00085 <font class="keyword">extern</font> tbx_tick_t tbx_new_event; 00086 <font class="keyword">extern</font> tbx_tick_t tbx_last_event; 00087 00088 <font class="preprocessor">#endif </font><font class="comment">/* TBX_TIMING_H */</font> </pre></div><hr><address align="right"><small>Generated on Tue Jun 17 10:15:51 2003 for SCSLib by <a href="http://www.doxygen.org/index.html"> <img src="doxygen.png" alt="doxygen" align="middle" border=0 width=110 height=53></a>1.2.15 </small></address> </body> </html>