/**
* Call another command and get stdout as a result.
*/
inline std::string call(const std::string& cmd, const std::vector<std::string> &args)
{
cybozu::FileStat stat = cybozu::FilePath(cmd).stat();
if (!stat.exists()) {
throw std::runtime_error("command not found:" + cmd);
}
if (!stat.isExecutable()) {
throw std::runtime_error("command not executable:" + cmd);
}
Pipe pipe0, pipe1;
pid_t cpid;
cpid = ::fork();
if (cpid < 0) {
throw std::runtime_error("fork() failed.");
}
if (cpid == 0) { /* child process */
/* bind pipe and stdout. */
pipe0.closeR();
pipe0.dupW(1);
pipe1.closeR();
pipe1.dupW(2);
try {
redirectToNullDev(0);
} catch (...) {
::exit(1);
}
closeAllFileDescriptors();
std::vector<char *> argv = prepareArgv(cmd, args);
::execv(cmd.c_str(), &argv[0]);
}
/* parent process. */
/* Read the stdout/stderr of the child process. */
pipe0.closeW();
pipe1.closeW();
std::string stdOutStr, stdErrStr;
std::exception_ptr epOut, epErr;
std::thread th0(streamToStr, pipe0.fdR(), std::ref(stdOutStr), std::ref(epOut));
std::thread th1(streamToStr, pipe1.fdR(), std::ref(stdErrStr), std::ref(epErr));
th0.join();
th1.join();
/* wait for done */
int status;
::waitpid(cpid, &status, 0);
/* handle errors */
if (status != 0) {
std::string msg("child process has returned non-zero:");
msg += cybozu::util::formatString("%d\n", status);
msg += "cmd:" + cmd + "\n";
msg += "args:";
for (const std::string &arg : args) msg += arg + " ";
msg += "\nstderr:" + stdErrStr;
throw std::runtime_error(msg);
}
if (epOut) std::rethrow_exception(epOut);
if (epErr) std::rethrow_exception(epErr);
return stdOutStr;
}
int main()
{
HDC1000 hdc1000_1;
MPL115A2 mpl115a2_1;
MS5607 ms5607_1;
DISPLAY d;
LOG l;
DB db;
hdc1000_1.Init();
mpl115a2_1.Init();
ms5607_1.Init();
std::cout << "Hello\nWorld!\n";
db.Connect();
if( signal(SIGINT, sig_handler) == SIG_ERR) {
std::cerr << "sig_handler fail."<<std::endl;
}
while(1) {
std::thread th0(governor);
//
std::thread th1([&]{hdc1000_1.Get();});
std::thread th2([&]{mpl115a2_1.Get();});
std::thread th3([&]{ms5607_1.Get();});
//
l.GetTime();//現在時刻の取得
//
th1.join();
th2.join();
th3.join();
//
l.Write(
hdc1000_1.Read(0),//Temp
hdc1000_1.Read(1),//Humi
mpl115a2_1.Read(1),
mpl115a2_1.Read(0),
ms5607_1.Read(1),//
ms5607_1.Read(0) //Temp
);
// 表示
d.Disp(l);
// DBインサート
db.Insert(l);
// Wait
th0.join();
// Terminate
if(sig) {
std::cout <<"Recieve SIGINT\n";
db.Disconnect();
std::cout <<std::flush;
break;
}
}
}