ProcessFunctions.cpp

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#include "stdafx.h"

#ifdef _MSC_VER
    #include <process.h>
#else
    #include <sys/types.h>
    #include <unistd.h>
    #include <signal.h>
#endif  // _MSC_VER


// get process ID
unsigned int getprocessid() {

#ifdef _MSC_VER
    const unsigned int pid = _getpid();
#else
    const unsigned int pid = getpid();
#endif  // _MSC_VER

    return pid;
}


// judges whether specified process exists or not
bool processexists( const unsigned int pid ) {
    bool ret = false;

#ifdef _MSC_VER
    HANDLE handle = OpenProcess(
        SYNCHRONIZE,
        FALSE,
        (DWORD)pid
    );
// >>>>>>   @Date:2013/10/03    <Modified>  A.Ozaki
    if  ( (HANDLE)NULL != handle )
    {
        ret = true;
    }
    if  ( GetLastError( ) == ERROR_ACCESS_DENIED )
    {
        ret = true;
    }
// <<<<<<   @Date:2013/10/03    <Modified>  A.Ozaki

    if( handle != NULL ) {
        CloseHandle( handle );
    }

#else
    if( kill( pid, 0 ) == 0 ) {
        ret = true;
    }
#endif  // _MSC_VER

    return ret;
}