job.h

   1 /* Definitions for managing subprocesses in GNU Make.
   2 Copyright (C) 1992, 1993, 1996 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 #ifndef SEEN_JOB_H
  20 #define SEEN_JOB_H
  21
  22 /* Structure describing a running or dead child process.  */
  23
  24 struct child
  25   {
  26     struct child *next;         /* Link in the chain.  */
  27
  28     struct file *file;          /* File being remade.  */
  29
  30     char **environment;         /* Environment for commands.  */
  31
  32     char **command_lines;       /* Array of variable-expanded cmd lines.  */
  33     unsigned int command_line;  /* Index into above.  */
  34     char *command_ptr;          /* Ptr into command_lines[command_line].  */
  35
  36     pid_t pid;                  /* Child process's ID number.  */
  37 #ifdef VMS
  38     int efn;                    /* Completion event flag number */
  39     int cstatus;                /* Completion status */
  40 #endif
  41     unsigned int remote:1;      /* Nonzero if executing remotely.  */
  42
  43     unsigned int noerror:1;     /* Nonzero if commands contained a `-'.  */
  44
  45     unsigned int good_stdin:1;  /* Nonzero if this child has a good stdin.  */
  46     unsigned int deleted:1;     /* Nonzero if targets have been deleted.  */
  47   };
  48
  49 extern struct child *children;
  50
  51 extern void new_job PARAMS ((struct file *file));
  52 extern void reap_children PARAMS ((int block, int err));
  53 extern void start_waiting_jobs PARAMS ((void));
  54
  55 extern char **construct_command_argv PARAMS ((char *line, char **restp, struct file *file));
  56 #ifdef VMS
  57 extern int child_execute_job PARAMS ((char *argv, struct child *child));
  58 #else
  59 extern void child_execute_job PARAMS ((int stdin_fd, int stdout_fd, char **argv, char **envp));
  60 #endif
  61 #ifdef _AMIGA
  62 extern void exec_command PARAMS ((char **argv));
  63 #else
  64 extern void exec_command PARAMS ((char **argv, char **envp));
  65 #endif
  66
  67 extern unsigned int job_slots_used;
  68
  69 extern void block_sigs PARAMS ((void));
  70 #ifdef POSIX
  71 extern void unblock_sigs PARAMS ((void));
  72 #else
  73 #ifdef  HAVE_SIGSETMASK
  74 extern int fatal_signal_mask;
  75 #define unblock_sigs()  sigsetmask (0)
  76 #else
  77 #define unblock_sigs()
  78 #endif
  79 #endif
  80
  81 #endif /* SEEN_JOB_H */