void newJob::on_pushButton_clicked()
{
if(!insertJob(ui->lineEdit->text()))
QMessageBox::information(this,"Creating new job ...","The job could not be created!");
else
QMessageBox::information(this,"Creating new job ...","The job is created");
this->close();
}
void PrintQueueModel::getJobFinished()
{
KCupsRequest *request = static_cast<KCupsRequest *>(sender());
if (request) {
if (request->hasError()) {
// emit error(request->error(), request->serverError(), request->errorMsg());
// clear the model after so that the proper widget can be shown
// clear();// TODO remove also in printerModel
} else {
KCupsJobs jobs = request->jobs();
kDebug() << jobs.size();
for (int i = 0; i < jobs.size(); ++i) {
if (jobs.at(i).state() == IPP_JOB_PROCESSING) {
m_processingJob = jobs.at(i).name();
}
// try to find the job row
int job_row = jobRow(jobs.at(i).id());
if (job_row == -1) {
// not found, insert new one
insertJob(i, jobs.at(i));
} else if (job_row == i) {
// update the job
updateJob(i, jobs.at(i));
} else {
// found at wrong position
// take it and insert on the right position
QList<QStandardItem *> row = takeRow(job_row);
insertRow(i, row);
updateJob(i, jobs.at(i));
}
}
// remove old printers
// The above code starts from 0 and make sure
// dest == modelIndex(x) and if it's not the
// case it either inserts or moves it.
// so any item > num_jobs can be safely deleted
while (rowCount() > jobs.size()) {
removeRow(rowCount() - 1);
}
}
request->deleteLater();
} else {
kWarning() << "Should not be called from a non KCupsRequest class" << sender();
}
m_jobRequest = 0;
}
/**
* forks a process and launches a program as child
*/
void launchJob(char *command[], char *file, int newDescriptor,
int executionMode)
{
pid_t pid;
pid = fork();
switch (pid) {
case -1:
perror("R-shell(fork)");
exit(EXIT_FAILURE);
break;
case 0:
/**
* we set the handling for job control signals back to the default.
*/
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
signal(SIGTSTP, SIG_DFL);
signal(SIGCHLD, &signalHandler_child);
signal(SIGTTIN, SIG_DFL);
usleep(20000); // fixes a synchronization bug. Needed for short commands like ls
setpgrp(); // make the child as new process group leader
if (executionMode == FOREGROUND)
tcsetpgrp(RSH_TERMINAL, getpid()); // if we want the process to be in foreground
if (executionMode == BACKGROUND)
printf("[%d] %d\n", ++numActiveJobs, (int) getpid()); // inform the user about the new job in bg
executeCommand(command, file, newDescriptor, executionMode);
exit(EXIT_SUCCESS);
break;
default:
setpgid(pid, pid); // we also make the child a new process group leader from here
// to avoid race conditions
jobsList = insertJob(pid, pid, *(command), file, (int) executionMode); // insert the job in the list
t_job* job = getJob(pid, BY_PROCESS_ID); // and get it as job object
if (executionMode == FOREGROUND) {
putJobForeground(job, FALSE); // put the job in foreground (if desired)
}
if (executionMode == BACKGROUND)
putJobBackground(job, FALSE); // put the job in background (if desired)
break;
}
}
void launchJob(char *command[], char *file, int newDescriptor,
int executionMode)
{
pid_t pid;
pid = fork();
switch (pid) {
case -1:
perror("MyShell");
exit(EXIT_FAILURE);
break;
case 0:
signal(SIGINT, SIG_DFL);
signal(SIGQUIT, SIG_DFL);
signal(SIGTSTP, SIG_DFL);
signal(SIGCHLD, &signalHandler_child);
signal(SIGTTIN, SIG_DFL);
usleep(20000);
setpgrp();
if (executionMode == FOREGROUND)
tcsetpgrp(MSH_TERMINAL, getpid());
if (executionMode == BACKGROUND)
printf("[%d] %d\n", ++numActiveJobs, (int) getpid());
executeCommand(command, file, newDescriptor, executionMode);
exit(EXIT_SUCCESS);
break;
default:
setpgid(pid, pid);
jobsList = insertJob(pid, pid, *(command), file, (int) executionMode);
t_job* job = getJob(pid, BY_PROCESS_ID);
if (executionMode == FOREGROUND) {
putJobForeground(job, FALSE);
}
if (executionMode == BACKGROUND)
putJobBackground(job, FALSE);
break;
}
}
//ctrl+z命令挂起前台进程
void ctrlZ(){
JOB *cur = NULL;
if(fgPid == 0)
return;
sigchld = 1;
cur=findJob(fgPid);
if(cur == NULL)
cur = insertJob(fgPid);
//cur->state=(char*)malloc(STLEN);
strcpy(cur->state, "stopped");
//cur->command=(char*)malloc(COMMLEN);
cur->command[strlen(cur->command)] = '&';
cur->command[strlen(cur->command) + 1] = '\0';
printf("%d\t%s\t%s\n", cur->pid, cur->state, cur->command);
//发送SIGTERM信号挂起前台进程
kill(fgPid, SIGSTOP);
fgPid = 0;
}
void kCalendar::addJob(void (*func)(), unsigned long time) {
kJob job = {func, kCalendar_true_condition, time};
insertJob(job);
}
