job.h

   1 /* Copyright (C) 1992, 1993 Free Software Foundation, Inc.
   2 This file is part of GNU Make.
   3
   4 GNU Make is free software; you can redistribute it and/or modify
   5 it under the terms of the GNU General Public License as published by
   6 the Free Software Foundation; either version 2, or (at your option)
   7 any later version.
   8
   9 GNU Make is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License
  15 along with GNU Make; see the file COPYING.  If not, write to
  16 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  17
  18 /* Structure describing a running or dead child process.  */
  19
  20 struct child
  21   {
  22     struct child *next;         /* Link in the chain.  */
  23
  24     struct file *file;          /* File being remade.  */
  25
  26     char **environment;         /* Environment for commands.  */
  27
  28     char **command_lines;       /* Array of variable-expanded cmd lines.  */
  29     unsigned int command_line;  /* Index into above.  */
  30     char *command_ptr;          /* Ptr into command_lines[command_line].  */
  31
  32     int pid;                    /* Child process's ID number.  */
  33     unsigned int remote:1;      /* Nonzero if executing remotely.  */
  34
  35     unsigned int noerror:1;     /* Nonzero if commands contained a `-'.  */
  36
  37     unsigned int good_stdin:1;  /* Nonzero if this child has a good stdin.  */
  38     unsigned int deleted:1;     /* Nonzero if targets have been deleted.  */
  39   };
  40
  41 extern struct child *children;
  42
  43 extern void new_job ();
  44 extern void reap_children ();
  45 extern void start_waiting_jobs ();
  46
  47 extern char **construct_command_argv ();
  48 extern void child_execute_job ();
  49 extern void exec_command ();
  50
  51 extern unsigned int job_slots_used;
  52
  53 #ifdef POSIX
  54 extern void unblock_sigs ();
  55 #else
  56 #ifdef  HAVE_SIGSETMASK
  57 extern int fatal_signal_mask;
  58 #define unblock_sigs()  sigsetmask (0)
  59 #else
  60 #define unblock_sigs()
  61 #endif
  62 #endif