Synch with 20010921
This commit is contained in:
Don BURNS
@@ -1,273 +1,203 @@
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#include <stdlib.h>
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//#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#ifndef macintosh
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#include <sys/types.h>
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#include <fcntl.h>
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#endif
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#include <osg/Timer>
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using namespace osg;
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#ifdef WIN32 // [
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// follows are the constructors of the Timer class, once version
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// for each OS combination. The order is WIN32, FreeBSD, Linux, IRIX,
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// and the rest of the world.
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//
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// all the rest of the timer methods are implemented within the header.
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#include <windows.h>
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#include <winbase.h>
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#ifdef WIN32
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int Timer::inited = 0;
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double Timer::cpu_mhz = 0.0;
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void Timer::init( void )
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{
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Timer_t start_time = tick();
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Sleep (1000);
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Timer_t end_time = tick();
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cpu_mhz = (double)(end_time-start_time)*1e-6;
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inited = 1;
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}
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Timer::Timer( void )
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{
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if( !inited ) init();
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}
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Timer::~Timer( void )
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{
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}
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double Timer::delta_s( Timer_t t1, Timer_t t2 )
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{
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Timer_t delta = t2 - t1;
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return (((double)delta/cpu_mhz)*1e-6);
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}
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double Timer::delta_m( Timer_t t1, Timer_t t2 )
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{
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Timer_t delta = t2 - t1;
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return (((double)delta/cpu_mhz)*1e-3);
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}
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Timer_t Timer::delta_u( Timer_t t0, Timer_t t1 )
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{
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return (Timer_t)((double)(t1 - t0)/cpu_mhz);
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}
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Timer_t Timer::delta_n( Timer_t t0, Timer_t t1 )
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{
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return (Timer_t)((double)(t1 - t0) * 1e3/cpu_mhz);
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}
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#endif // ]
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#if defined(__linux) || defined(__FreeBSD__) // [
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# include <unistd.h>
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# if defined(__linux)
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# include <sys/mman.h>
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# elif defined(__FreeBSD__)
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# include <sys/types.h>
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# include <sys/sysctl.h>
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# endif
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int Timer::inited = 0;
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double Timer::cpu_mhz = 0.0;
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void Timer::init( void )
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{
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# if defined(__FreeBSD__)
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int cpuspeed;
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size_t len;
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len = sizeof(cpuspeed);
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if (sysctlbyname("machdep.tsc_freq", &cpuspeed, &len, NULL, NULL) == -1) {
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perror("sysctlbyname(machdep.tsc_freq)");
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return;
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}
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cpu_mhz = cpuspeed / 1e6;
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# elif defined(__linux)
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char buff[128];
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FILE *fp = fopen( "/proc/cpuinfo", "r" );
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while( fgets( buff, sizeof( buff ), fp ) > 0 )
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#include <sys/types.h>
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#include <fcntl.h>
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#include <windows.h>
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#include <winbase.h>
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Timer::Timer()
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{
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if( !strncmp( buff, "cpu MHz", strlen( "cpu MHz" )))
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{
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char *ptr = buff;
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_useStandardClock = false;
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if (_useStandardClock)
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{
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_secsPerClick = (1.0 / (double) CLOCKS_PER_SEC);
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}
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else
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{
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while( ptr && *ptr != ':' ) ptr++;
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if( ptr )
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{
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ptr++;
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sscanf( ptr, "%lf", &cpu_mhz );
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}
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break;
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}
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Timer_t start_time = tick();
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Sleep (1000);
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Timer_t end_time = tick();
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_secsPerClick = 1.0/(double)(end_time-start_time);
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}
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}
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fclose( fp );
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# endif
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inited = 1;
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}
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#elif defined(__FreeBSD__)
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Timer::Timer( void )
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{
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if( !inited ) init();
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}
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Timer::~Timer( void )
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{
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}
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double Timer::delta_s( Timer_t t1, Timer_t t2 )
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{
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Timer_t delta = t2 - t1;
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return ((double)delta/cpu_mhz*1e-6);
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}
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double Timer::delta_m( Timer_t t1, Timer_t t2 )
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{
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Timer_t delta = t2 - t1;
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return ((double)delta/cpu_mhz*1e-3);
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}
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Timer_t Timer::delta_u( Timer_t t0, Timer_t t1 )
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{
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return (Timer_t)((double)(t1 - t0)/cpu_mhz);
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}
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Timer_t Timer::delta_n( Timer_t t0, Timer_t t1 )
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{
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return (Timer_t)((double)(t1 - t0) * 1e3/cpu_mhz);
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}
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#endif // ]
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#ifdef __sgi // [
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#include <unistd.h>
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#include <sys/syssgi.h>
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#include <sys/immu.h>
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#include <sys/mman.h>
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unsigned long Timer::dummy = 0;
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Timer::Timer( void )
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{
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__psunsigned_t phys_addr, raddr;
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unsigned int cycleval;
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volatile unsigned long counter_value, *iotimer_addr;
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int fd, poffmask;
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poffmask = getpagesize() - 1;
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phys_addr = syssgi( SGI_QUERY_CYCLECNTR, &cycleval );
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microseconds_per_click = (double)cycleval/1e6;
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nanoseconds_per_click = (double)cycleval/1e3;
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raddr = phys_addr & ~poffmask;
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clk = &dummy;
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if( (fd = open( "/dev/mmem", O_RDONLY )) < 0 )
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <sys/types.h>
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Timer::Timer()
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{
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perror( "/dev/mmem" );
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return;
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_useStandardClock = false;
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if (_useStandardClock)
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{
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_secsPerClick = 1e-6; // gettimeofday()'s precision.
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}
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else
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{
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int cpuspeed;
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size_t len;
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len = sizeof(cpuspeed);
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if (sysctlbyname("machdep.tsc_freq", &cpuspeed, &len, NULL, NULL) == -1)
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{
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_useStandardClock = true;
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perror("sysctlbyname(machdep.tsc_freq)");
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return;
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}
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_secsPerClick = 1.0/cpuspeed;
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}
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}
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#elif defined(__linux)
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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Timer::Timer()
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{
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_useStandardClock = false;
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if (_useStandardClock)
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{
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_secsPerClick = 1e-6; // gettimeofday()'s precision.
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}
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else
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{
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char buff[128];
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FILE *fp = fopen( "/proc/cpuinfo", "r" );
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double cpu_mhz=0.0f;
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while( fgets( buff, sizeof( buff ), fp ) > 0 )
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{
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if( !strncmp( buff, "cpu MHz", strlen( "cpu MHz" )))
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{
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char *ptr = buff;
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while( ptr && *ptr != ':' ) ptr++;
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if( ptr )
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{
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ptr++;
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sscanf( ptr, "%lf", &cpu_mhz );
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}
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break;
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}
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}
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fclose( fp );
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if (cpu_mhz==0.0f)
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{
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// error - no cpu_mhz found.
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Timer_t start_time = tick();
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sleep (1);
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Timer_t end_time = tick();
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_secsPerClick = 1.0/(double)(end_time-start_time);
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}
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else
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{
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_secsPerClick = 1e-6/cpu_mhz;
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}
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}
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}
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iotimer_addr = (volatile unsigned long *)mmap(
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(void *)0L,
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(size_t)poffmask,
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(int)PROT_READ,
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(int)MAP_PRIVATE, fd, (off_t)raddr);
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#elif defined(__sgi)
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iotimer_addr = (unsigned long *)(
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(__psunsigned_t)iotimer_addr + (phys_addr & poffmask)
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);
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/syssgi.h>
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#include <sys/immu.h>
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#include <sys/mman.h>
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cycleCntrSize = syssgi( SGI_CYCLECNTR_SIZE );
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unsigned long Timer::_dummy = 0;
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if( cycleCntrSize > 32 )
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++iotimer_addr;
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Timer::Timer( void )
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{
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_useStandardClock = false;
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clk = (unsigned long *)iotimer_addr;
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}
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if (_useStandardClock)
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{
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_secsPerClick = 1e-6; // gettimeofday()'s precision.
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}
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else
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{
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__psunsigned_t phys_addr, raddr;
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unsigned int cycleval;
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volatile unsigned long counter_value, *iotimer_addr;
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int fd, poffmask;
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poffmask = getpagesize() - 1;
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phys_addr = syssgi( SGI_QUERY_CYCLECNTR, &cycleval );
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raddr = phys_addr & ~poffmask;
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_clockAddress = &_dummy;
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if( (fd = open( "/dev/mmem", O_RDONLY )) < 0 )
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{
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perror( "/dev/mmem" );
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return;
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}
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iotimer_addr = (volatile unsigned long *)mmap(
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(void *)0L,
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(size_t)poffmask,
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(int)PROT_READ,
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(int)MAP_PRIVATE, fd, (off_t)raddr);
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iotimer_addr = (unsigned long *)(
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(__psunsigned_t)iotimer_addr + (phys_addr & poffmask)
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);
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_cycleCntrSize = syssgi( SGI_CYCLECNTR_SIZE );
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if( _cycleCntrSize > 32 )
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++iotimer_addr;
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_clockAddress = (unsigned long *)iotimer_addr;
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_secsPerClick = (double)(cycleval)* 1e-12;
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}
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}
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Timer::~Timer( void )
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{
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}
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#elif defined(unix)
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Timer::Timer( void )
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{
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_useStandardClock = true;
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_secsPerClick = 1e-6; // gettimeofday()'s precision.
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}
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double Timer::delta_s( Timer_t t1, Timer_t t2 )
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{
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Timer_t delta = t2 - t1;
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return ((double)delta * microseconds_per_click*1e-6);
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}
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#else
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// handle the rest of the OS world by just using the std::clock,
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double Timer::delta_m( Timer_t t1, Timer_t t2 )
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{
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Timer_t delta = t2 - t1;
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return ((double)delta * microseconds_per_click*1e-3);
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}
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Timer::Timer( void )
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{
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_useStandardClock = true;
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_secsPerClick = (1.0 / (double) CLOCKS_PER_SEC);
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}
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Timer_t Timer::delta_u( Timer_t t1, Timer_t t2 )
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{
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Timer_t delta = t2 - t1;
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return (Timer_t)((double)delta * microseconds_per_click);
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}
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Timer_t Timer::delta_n( Timer_t t1, Timer_t t2 )
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{
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unsigned long delta = t2 - t1;
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return (Timer_t )((double)delta * nanoseconds_per_click);
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}
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#endif // ]
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#ifdef macintosh // [
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Timer::Timer( void )
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{
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microseconds_per_click = (1.0 / (double) CLOCKS_PER_SEC) * 1e6;
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nanoseconds_per_click = (1.0 / (double) CLOCKS_PER_SEC) * 1e9;
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}
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Timer::~Timer( void )
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{
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}
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double Timer::delta_s( Timer_t t1, Timer_t t2 )
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{
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Timer_t delta = t2 - t1;
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return ((double)delta * microseconds_per_click*1e-6);
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}
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double Timer::delta_m( Timer_t t1, Timer_t t2 )
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{
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Timer_t delta = t2 - t1;
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return ((double)delta * microseconds_per_click*1e-3);
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}
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Timer_t Timer::delta_u( Timer_t t1, Timer_t t2 )
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{
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Timer_t delta = t2 - t1;
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return (Timer_t)((double)delta * microseconds_per_click);
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}
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Timer_t Timer::delta_n( Timer_t t1, Timer_t t2 )
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{
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unsigned long delta = t2 - t1;
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return (Timer_t )((double)delta * nanoseconds_per_click);
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}
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#endif // ]
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#endif
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