/*--------------------------------------------------------------------------
* sehlltest - use shell command to test pipe machanism
*--------------------------------------------------------------------------
*/
void shelltest(void)
{
shell_pipid_test = pipcreate();
shell_piptr_test = &piptab[shell_pipid_test];
shellproducerid = create(shellproduce, 1024, 20, "shellproducer", 0);
shellconsumerid = create(shellconsume, 1024, 20, "shellconsumer", 0);
shellclockid = create(shellclock, 1024, 20, "shellclock", 0);
pipconnect(shell_pipid_test, shellproducerid, shellconsumerid);
resume(shellproducerid);
resume(shellconsumerid);
resume(shellclockid);
pipdisconnect(shell_pipid_test);
pipdelete(shell_pipid_test);
}
shellcmd xsh_gen(int nargs, char *args[])
{
pipid32 pip;
pid32 rdpid,wrtpid;
/* For argument '--help', emit help about the 'gen' command */
if (nargs == 2 && (strncmp(args[1], "--help", 7) == 0)) {
printf("Use: %s\n\n", args[0]);
printf("Description:\n");
printf("\tGenerates a word from wordlist and prints the count of words starting with vowel\n");
printf("Options:\n");
printf("\t | search\t it will print the number of words generated in 5 sec and count the number of words starting with vowels read from the pipe\n");
return 0;
}
if (nargs < 3) {
fprintf(stderr, "%s: too few arguments\n", args[0]);
fprintf(stderr, "Try '%s --help' for more information\n",
args[0]);
return 1;
}
else {
if ((nargs == 3) && (strncmp(args[1], "|", 1) == 0) && (strncmp(args[2], "search", 6) == 0)) {
//kprintf("correct usage \n\r");
if((pip = pipcreate()) == SYSERR) {
kprintf("pipe creation unsuccessful \n\r");
return 0;
}
printsem = semcreate(1);
rdpid = create(searchpipe, SHELL_CMDSTK, SHELL_CMDPRIO,"search", 2, pip, &printsem);
wrtpid = getpid();
if(pipconnect(pip,wrtpid,rdpid) == SYSERR) {
kprintf("pip connection failed \n\r");
return 0;
}
else {
//kprintf("before resuming reader and writing\n\r");
resume(rdpid);
writepip(pip);
//resume(rdpid);
kprintf("after writing\n\r");
}
}
}
return 0;
}
int main(int argc, char **argv)
{
pipid32 pip;
pid32 reader;
pid32 writer;
if(SYSERR == (pip = pipcreate())) {
return 0;
}
if(SYSERR == (reader = create(consume, 8196, 20, "read", 1, pip))) {
return 0;
}
if(SYSERR == (writer = create(produce, 8196, 20, "write", 1, pip))) {
return 0;
}
if((pipconnect(pip, writer, reader) == SYSERR)) {
return 0;
}
resume(writer);
resume(reader);
while(1){
char command = getchar();
if(command == 10){
resume(reader);
}
if(command == 'q'){
break;
}
}
kill(reader);
kill(writer);
pipdisconnect(pip);
pipdelete(pip);
return OK;
}
