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    Length: 691 (0x2b3)
    Types: TextFile
    Names: »pipeback.c«

└─⟦db229ac7e⟧ Bits:30007240 EUUGD20: SSBA 1.2 / AFW Benchmarks
    └─⟦this⟧ »EUUGD20/AFUU-ssba1.21/ssba1.21E/bsd/pipeback.c« 
    └─⟦this⟧ »EUUGD20/AFUU-ssba1.21/ssba1.21F/bsd/pipeback.c« 

TextFile

main(argc,argv)
	char *argv[];
{
	char buf[512];
	int fd[2], fd2[2], msgsize;
	register int i, iter;

	if (argc < 3){
		printf("usage: %s iterations message-size\n",argv[0]);
		exit(1);
	}
	argc--,argv++;
	iter = atoi(*argv);
	argc--, argv++;
	msgsize = atoi(*argv);
	if (msgsize > sizeof(buf) || msgsize <= 0){
		printf("%s: Bad message size.\n", *argv);
		exit(2);
	}
	if (pipe(fd) < 0) {
		perror("pipe");
		exit(3);
	}
	if (pipe(fd2) < 0) {
		perror("pipe");
		exit(3);
	}
	if (fork() == 0)
		for (i=0; i < iter; i++){
			read(fd[0], buf, msgsize);
			write(fd2[1], buf, msgsize);
		}
	else
		for (i=0; i < iter; i++){
			write(fd[1], buf, msgsize);
			read(fd2[0], buf, msgsize);
		}
}