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#include "rc.h"

#include <signal.h>
#include <termios.h>

// -----------------------------------------------------------------------
// exports

Thread *
getjob(int pid, int *index)
{
    int i;
    Thread *job;
    for(i=0,job=shell.jobs; job && job->pid != pid; i++, job=job->next)
        ;

    return job;
}

void
report(Thread *job, int index)
{
    switch(job->wait.status){
        case PDone:
            print(shell.err, "job %d [%d]: done\n",      index, job->pid);
            break;
        case PStop:
            print(shell.err, "job %d [%d]: suspended\n", index, job->pid);
            break;
        case PAgain:
            print(shell.err, "job %d [%d]: continued\n", index, job->pid);
            break;
        case PRun:
            print(shell.err, "job %d [%d]: running\n",   index, job->pid);
            break;
        default:
            fatal("bad wait status: %d\n", job->wait.status);
    }
}

void
wakeup(Thread *t)
{
    int i;
    t->wait.status = PRun;
    for(i=0; i < t->wait.len; i++){
        if(t->wait.on[i].status == PStop)
            t->wait.on[i].status = PRun;
    }
}

void
foreground(Thread *job, int signal)
{
    tcsetpgrp(0, job->pgid);
    if(signal){
        if(kill(-job->pgid, SIGCONT) < 0)
            perror("kill[SIGCONT]");
    }

    waitall(job);

    tcsetpgrp(0, shell.pid);
}

void
addjob(Thread *job)
{
    job->next = shell.jobs;
    shell.jobs = job;
}

void
deljob(Thread *job)
{
    Thread **jp;

    for(jp = &shell.jobs; *jp && *jp != job; jp = &(*jp)->next)
        ;

    *jp = job->next;
}