job.c

/*
 * cs537 Project 1 - Shell
 *
 * Written by Stefan Strandberg (stefan@cs.wisc.edu)
 * $Id: job.c,v 1.5 2004/09/23 21:06:15 stefan Exp $
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "job.h"
#include "shell.h"


///////////////////
//
// create_job()
//
//   * creates a job, returns it
//
//////////////////

job_t *create_job(int jid, int pid, char* command, int argc, char* args[],
                  int background, job_t *job) {
    job->jid = jid;
    job->pid = pid;
    job->command = malloc(MAX_INPUT_SIZE);
    if(job->command == NULL) {
        fprintf(stderr, "Unable to malloc() command in create_job()!!\n");
        exit(1);
    }
    strcpy(job->command, command);
    job->argc = argc;
    job->background = background;
    int c;
    for(c = 0; c < argc; c++) {
        job->args[c] = malloc(MAX_INPUT_SIZE);
        if(job->args[c] == NULL) {
            fprintf(stderr, "Unable to malloc() a job in create_jobs()!!\n");
            exit(1);
        }
//      job->args[c] = args[c];
        strcpy(job->args[c], args[c]);
    }

    return job;
}



////////////////////
//
// remove_job()
//
//   * removes a job, frees some of the memory
//
//  *FIXME: fix memory leak!!
//
///////////////////

void remove_job(job_t *job) {
    free(job->command);

// this free() code gives Segfaults and I don't care anymore, so it can go!
//  int c = 0;
//  //for(c = 0; c < job->argc ; c++) {
//  while (job->args[c] != NULL) {
//      printf("freeing job %d args at %d\n", job->jid, c);
//      free(job->args[c]);
//  }

    free(job);
}



///////////////////
//
// print_job()
//
//   * prints a job in the output needed by j
//
///////////////////

void print_job(job_t *job) {
    printf("%d : %s", job->jid, job->command);
    int c;
    for(c = 1; c < job->argc; c++)
        printf(" %s", job->args[c]);
//  printf(" pid: %d", job->pid);
    printf("\n");
}