source: benchmark/bench.h @ 909aebf

#pragma once

#if defined(__cforall)
extern "C" {
#endif
        #include <stdlib.h>
        #include <unistd.h>                                     // sysconf
#if ! defined(__cforall)
        #include <time.h>
        #include <sys/time.h>
#else
}
#include <time.hfa>
#endif


static inline unsigned long long int bench_time() {
    struct timespec ts;
    clock_gettime(
#if defined( __linux__ )
         CLOCK_THREAD_CPUTIME_ID,
#elif defined( __freebsd__ )
         CLOCK_PROF,
#elif defined( __solaris__ )
         CLOCK_HIGHRES,
#else
    #error uC++ : internal error, unsupported architecture
#endif
         &ts );
    return 1000000000LL * ts.tv_sec + ts.tv_nsec;
} // Time

#ifndef BENCH_N
#define BENCH_N 500 //10000000
#endif

#define BENCH(statement, output)                \
        size_t n = BENCH_N;                     \
        if( argc > 2 ) return 1;                \
        if( argc == 2 ) {                               \
                n = atoi(argv[1]);              \
        }                                               \
        long long int StartTime, EndTime;       \
        StartTime = bench_time();               \
        statement;                                      \
        EndTime = bench_time();                 \
        unsigned long long int output =         \
        ( EndTime - StartTime ) / n;

#if defined(__cforall)
Duration default_preemption() {
        return 0;
}
#endif