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/* Definitions for managing subprocesses in GNU Make.
Copyright (C) 1992, 1993 Free Software Foundation, Inc.
This file is part of GNU Make.
GNU Make is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Make is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Make; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Structure describing a running or dead child process. */
struct child
{
struct child *next; /* Link in the chain. */
struct file *file; /* File being remade. */
char **environment; /* Environment for commands. */
char **command_lines; /* Array of variable-expanded cmd lines. */
unsigned int command_line; /* Index into above. */
char *command_ptr; /* Ptr into command_lines[command_line]. */
pid_t pid; /* Child process's ID number. */
unsigned int remote:1; /* Nonzero if executing remotely. */
unsigned int noerror:1; /* Nonzero if commands contained a `-'. */
unsigned int good_stdin:1; /* Nonzero if this child has a good stdin. */
unsigned int deleted:1; /* Nonzero if targets have been deleted. */
};
extern struct child *children;
extern void new_job ();
extern void reap_children ();
extern void start_waiting_jobs ();
extern char **construct_command_argv ();
extern void child_execute_job ();
extern void exec_command ();
extern unsigned int job_slots_used;
#ifdef POSIX
extern void unblock_sigs ();
#else
#ifdef HAVE_SIGSETMASK
extern int fatal_signal_mask;
#define unblock_sigs() sigsetmask (0)
#else
#define unblock_sigs()
#endif
#endif
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