# DidaWiki

### Strumenti Sito

magistraleinformaticanetworking:spm:ff29_pipe1

### One stage pipeline (sample code)

pipe1.cpp
/* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* ***************************************************************************
*  This program is free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License version 2 as
*
*  This program is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  You should have received a copy of the GNU General Public License
*  along with this program; if not, write to the Free Software
*  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*  As a special exception, you may use this file as part of a free software
*  library without restriction.  Specifically, if other files instantiate
*  templates or use macros or inline functions from this file, or you compile
*  this file and link it with other files to produce an executable, this
*  file does not by itself cause the resulting executable to be covered by
*  the GNU General Public License.  This exception does not however
*  invalidate any other reasons why the executable file might be covered by
*  the GNU General Public License.
*
****************************************************************************
*/

/*
* Very basic test for the FastFlow pipeline (actually a 2-stage torus).
*
*/

#include <ff/pipeline.hpp>

using namespace ff;

// generic stage
class Stage: public ff_node {
public:
Stage():counter(0) {}

int svc_init() {
printf("Hello, I'm Stage\n");
return 0;
}
void *svc(void *) {
if (++counter > 10) return NULL;
printf("Hi!\n");
return GO_ON;
}
void svc_end() {
printf("Goodbay\n");
}
private:
size_t counter;
};

int main() {
ff_pipeline pipe;
}