text: /*
   * Copyright (c) 2020, the SerenityOS developers
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include "Job.h"
  #include "AST.h"
  #include "Shell.h"
  #include <inttypes.h>
  #include <stdio.h>
  #include <sys/wait.h>
  
  bool Job::print_status(PrintStatusMode mode)
  {
      int wstatus;
      auto rc = waitpid(m_pid, &wstatus, WNOHANG);
      if (rc == -1) {
          perror("waitpid");
          return false;
      }
      auto status = "running";
  
      if (rc != 0) {
          if (WIFEXITED(wstatus))
              status = "exited";
  
          if (WIFSTOPPED(wstatus))
              status = "stopped";
  
          if (WIFSIGNALED(wstatus))
              status = "signaled";
      }
  
      char background_indicator = '-';
  
      if (is_running_in_background())
          background_indicator = '+';
  
      switch (mode) {
      case PrintStatusMode::Basic:
          printf("[%" PRIu64 "] %c %s %s\n", m_job_id, background_indicator, status, m_cmd.characters());
          break;
      case PrintStatusMode::OnlyPID:
          printf("[%" PRIu64 "] %c %d %s %s\n", m_job_id, background_indicator, m_pid, status, m_cmd.characters());
          break;
      case PrintStatusMode::ListAll:
          printf("[%" PRIu64 "] %c %d %d %s %s\n", m_job_id, background_indicator, m_pid, m_pgid, status, m_cmd.characters());
          break;
      }
  
      return true;
  }
  
  Job::Job(pid_t pid, unsigned pgid, String cmd, u64 job_id, AST::Command&& command)
      : m_pgid(pgid)
      , m_pid(pid)
      , m_job_id(job_id)
      , m_cmd(move(cmd))
  {
      m_command = make<AST::Command>(move(command));
  
      set_running_in_background(false);
      m_command_timer.start();
  }
  
  void Job::set_has_exit(int exit_code)
  {
      if (m_exited)
          return;
      m_exit_code = exit_code;
      m_exited = true;
      if (on_exit)
          on_exit(*this);
  }
  
  void Job::set_signalled(int sig)
  {
      if (m_exited)
          return;
      m_exited = true;
      m_exit_code = 126;
      m_term_sig = sig;
      if (on_exit)
          on_exit(*this);
  }
  
  void Job::unblock() const
  {
      if (!m_exited && on_exit)
          on_exit(*this);
  }
  