utils.h

/*
Copyright (c) 2009-2013, Intel Corporation
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the dis
tribution.
    * Neither the name of Intel Corporation nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNES
S FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDI
NG, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRI
CT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// written by Roman Dementiev

#ifndef PCM_UTILS_HEADER
#define PCM_UTILS_HEADER

#include <stdio.h>

#ifdef _MSC_VER
BOOL cleanup(DWORD)
{
    PCM::getInstance()->cleanup();
    return FALSE;
}
#else
void cleanup(int s)
{
    signal(s, SIG_IGN);
    PCM::getInstance()->cleanup();
    exit(0);
}
#endif

#ifdef _MSC_VER
void win_usleep(int delay_us)
{
    uint64 t1 = 0, t2 = 0, freq = 0;
    uint64 wait_tick;
    QueryPerformanceFrequency((LARGE_INTEGER *) &freq);
    wait_tick = freq * delay_us / 1000000ULL;
    QueryPerformanceCounter((LARGE_INTEGER *) &t1);
    do {
        QueryPerformanceCounter((LARGE_INTEGER *) &t2);
        YieldProcessor();
    } while ((t2-t1) < wait_tick);
}
#endif

void MySleep(int delay)
{
#ifdef _MSC_VER
    if(delay) Sleep(delay*1000);
#else
    ::sleep(delay);
#endif
}

void MySleepMs(int delay_ms)
{
#ifdef _MSC_VER
    if(delay_ms) Sleep(delay_ms);
#else
    ::sleep(delay_ms/1000);
#endif
}

void MySleepUs(int delay_us)
{
#ifdef _MSC_VER
    if(delay_us) win_usleep(delay_us);
#else
    ::usleep(delay_us);
#endif
}

int MySystem(char * sysCmd)
{
    std::cout << "\n Executing \"";
    std::cout << sysCmd;
    std::cout << "\" command:\n" << std::endl;
    int result = system(sysCmd);
    std::cout << "Exit code: " << result <<"\n"<< std::endl;
    return result;
}

struct null_stream : public std::streambuf
{
    void overflow(char) { }
};

template <class IntType>
std::string unit_format(IntType n)
{
    char buffer[1024];
    if (n <= 9999ULL)
    {
        sprintf(buffer, "%4d  ", int32(n));
        return buffer;
    }
    if (n <= 9999999ULL)
    {
        sprintf(buffer, "%4d K", int32(n / 1000ULL));
        return buffer;
    }
    if (n <= 9999999999ULL)
    {
        sprintf(buffer, "%4d M", int32(n / 1000000ULL));
        return buffer;
    }
    if (n <= 9999999999999ULL)
    {
        sprintf(buffer, "%4d G", int32(n / 1000000000ULL));
        return buffer;
    }

    sprintf(buffer, "%4d T", int32(n / (1000000000ULL * 1000ULL)));
    return buffer;
}


#endif