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/* Definitions for managing subprocesses in GNU Make.
Copyright (C) 1992-2020 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 3 of the License, or (at your option) any later
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
this program. If not, see <>. */
#include "output.h"
/* Structure describing a running or dead child process. */
#ifdef VMS
#define VMSCHILD \
char *comname; /* Temporary command file name */ \
int efn; /* Completion event flag number */ \
int cstatus; /* Completion status */ \
int vms_launch_status; /* non-zero if lib$spawn, etc failed */
#define VMSCHILD
#define CHILDBASE \
char *cmd_name; /* Allocated copy of command run. */ \
char **environment; /* Environment for commands. */ \
struct output output /* Output for this child. */
struct childbase
struct child
struct child *next; /* Link in the chain. */
struct file *file; /* File being remade. */
char *sh_batch_file; /* Script file for shell commands */
char **command_lines; /* Array of variable-expanded cmd lines. */
char *command_ptr; /* Ptr into command_lines[command_line]. */
unsigned int command_line; /* Index into command_lines. */
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. */
unsigned int recursive:1; /* Nonzero for recursive command ('+' etc.) */
unsigned int jobslot:1; /* Nonzero if it's reserved a job slot. */
unsigned int dontcare:1; /* Saved dontcare flag. */
extern struct child *children;
/* A signal handler for SIGCHLD, if needed. */
RETSIGTYPE child_handler (int sig);
int is_bourne_compatible_shell(const char *path);
void new_job (struct file *file);
void reap_children (int block, int err);
void start_waiting_jobs (void);
char **construct_command_argv (char *line, char **restp, struct file *file,
int cmd_flags, char** batch_file);
pid_t child_execute_job (struct childbase *child, int good_stdin, char **argv);
#ifdef _AMIGA
void exec_command (char **argv) NORETURN;
#elif defined(__EMX__)
int exec_command (char **argv, char **envp);
void exec_command (char **argv, char **envp) NORETURN;
void unblock_all_sigs (void);
extern unsigned int job_slots_used;
extern unsigned int jobserver_tokens;