magistraleinformaticanetworking:spm:ff29_pipe3c11
Pipeline (C++11 version, sample code)
- pipe3c11.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
* published by the Free Software Foundation.
*
* 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.
*
****************************************************************************
*/
#include <cstdlib>
#include <cstdio>
#include <ff/pipeline.hpp>
using namespace ff;
int main(int argc, char * argv[]) {
if (argc!=2) {
std::cerr << "use: " << argv[0] << " streamlen\n";
return -1;
}
long streamlen = atol(argv[1]);
srandom(111);
auto f = [streamlen](long*, ff_node*const stage) -> long* {
for(size_t i=0;i<streamlen;++i)
stage->ff_send_out(new long(random() % 1000000));
return NULL;
};
auto g = [](long *t, ff_node*const=0) -> long* {
usleep(*t);
return t;
};
auto h = [](long *t, ff_node*const=0) -> long* {
printf("received %ld\n", *t);
delete t;
return t;
};
// bild a 2-stage pipeline
ff_pipe<long> pipe(f,g,h);
if (pipe.run_and_wait_end()<0) {
error("running pipeline\n");
return -1;
}
std::cerr << "DONE, pipe time= " << pipe.ffTime() << " (ms)\n";
//pipe.ffStats(std::cerr);
return 0;
}
magistraleinformaticanetworking/spm/ff29_pipe3c11.txt · Ultima modifica: 29/10/2013 alle 17:27 (10 anni fa) da Marco Danelutto