mirror of
https://github.com/thiagoralves/OpenPLC.git
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63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
//-----------------------------------------------------------------------------
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// Copyright 2015 Thiago Alves
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// This file is part of the OpenPLC Software Stack.
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//
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// OpenPLC is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// OpenPLC is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with OpenPLC. If not, see <http://www.gnu.org/licenses/>.
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//------
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//
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// This program is responsible to start the OpenPLC and monitor constantly if
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// it is running or not.
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//-----------------------------------------------------------------------------
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/wait.h>
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#include <time.h>
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//-----------------------------------------------------------------------------
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// Helper function - Makes the running thread sleep for the ammount of time
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// in milliseconds
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//-----------------------------------------------------------------------------
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void sleep_ms(int milliseconds)
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{
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struct timespec ts;
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ts.tv_sec = milliseconds / 1000;
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ts.tv_nsec = (milliseconds % 1000) * 1000000;
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nanosleep(&ts, NULL);
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}
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int main()
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{
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while(1)
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{
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printf("Starting OpenPLC...\n");
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if (!fork())
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{
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//executes OpenPLC
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execl("./core/openplc", "./core/openplc", (char *) 0);
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}
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else
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{
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wait(0);
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printf("OpenPLC crashed! Restarting...\n");
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}
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sleep_ms(1000); //wait until the sockets are closed
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}
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}
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