job.h

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