job.h

   1 /* Definitions for managing subprocesses in GNU Make.
   2 Copyright (C) 1992, 1993, 1996, 1999 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, Inc., 59 Temple Place - Suite 330,
  18 Boston, MA 02111-1307, USA.  */
  19
  20 #ifndef SEEN_JOB_H
  21 #define SEEN_JOB_H
  22
  23 /* Structure describing a running or dead child process.  */
  24
  25 struct child
  26   {
  27     struct child *next;         /* Link in the chain.  */
  28
  29     struct file *file;          /* File being remade.  */
  30
  31     char **environment;         /* Environment for commands.  */
  32
  33     char **command_lines;       /* Array of variable-expanded cmd lines.  */
  34     unsigned int command_line;  /* Index into above.  */
  35     char *command_ptr;          /* Ptr into command_lines[command_line].  */
  36
  37     pid_t pid;                  /* Child process's ID number.  */
  38 #ifdef VMS
  39     int efn;                    /* Completion event flag number */
  40     int cstatus;                /* Completion status */
  41 #endif
  42     char *sh_batch_file;        /* Script file for shell commands */
  43     unsigned int remote:1;      /* Nonzero if executing remotely.  */
  44
  45     unsigned int noerror:1;     /* Nonzero if commands contained a `-'.  */
  46
  47     unsigned int good_stdin:1;  /* Nonzero if this child has a good stdin.  */
  48     unsigned int deleted:1;     /* Nonzero if targets have been deleted.  */
  49     char job_token;             /* The token read from the job pipe.  */
  50   };
  51
  52 extern struct child *children;
  53
  54 extern void new_job PARAMS ((struct file *file));
  55 extern void reap_children PARAMS ((int block, int err));
  56 extern void start_waiting_jobs PARAMS ((void));
  57
  58 extern char **construct_command_argv PARAMS ((char *line, char **restp, struct file *file, char** batch_file));
  59 #ifdef VMS
  60 extern int child_execute_job PARAMS ((char *argv, struct child *child));
  61 #else
  62 extern void child_execute_job PARAMS ((int stdin_fd, int stdout_fd, char **argv, char **envp));
  63 #endif
  64 #ifdef _AMIGA
  65 extern void exec_command PARAMS ((char **argv));
  66 #else
  67 extern void exec_command PARAMS ((char **argv, char **envp));
  68 #endif
  69
  70 extern unsigned int job_slots_used;
  71
  72 extern void block_sigs PARAMS ((void));
  73 #ifdef POSIX
  74 extern void unblock_sigs PARAMS ((void));
  75 #else
  76 #ifdef  HAVE_SIGSETMASK
  77 extern int fatal_signal_mask;
  78 #define unblock_sigs()  sigsetmask (0)
  79 #else
  80 #define unblock_sigs()
  81 #endif
  82 #endif
  83
  84 #endif /* SEEN_JOB_H */