1 /* Definitions for managing subprocesses in GNU Make.
2 Copyright (C) 1992-2020 Free Software Foundation, Inc.
3 This file is part of GNU Make.
5 GNU Make is free software; you can redistribute it and/or modify it under the
6 terms of the GNU General Public License as published by the Free Software
7 Foundation; either version 3 of the License, or (at your option) any later
10 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
11 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License along with
15 this program. If not, see <http://www.gnu.org/licenses/>. */
19 /* Structure describing a running or dead child process. */
23 char *comname; /* Temporary command file name */ \
24 int efn; /* Completion event flag number */ \
25 int cstatus; /* Completion status */ \
26 int vms_launch_status; /* non-zero if lib$spawn, etc failed */
32 char *cmd_name; /* Alloced copy of command run. */ \
33 char **environment; /* Environment for commands. */ \
35 struct output output /* Output for this child. */
47 struct child *next; /* Link in the chain. */
49 struct file *file; /* File being remade. */
51 char *sh_batch_file; /* Script file for shell commands */
52 char **command_lines; /* Array of variable-expanded cmd lines. */
53 char *command_ptr; /* Ptr into command_lines[command_line]. */
55 unsigned int command_line; /* Index into command_lines. */
57 pid_t pid; /* Child process's ID number. */
59 unsigned int remote:1; /* Nonzero if executing remotely. */
60 unsigned int noerror:1; /* Nonzero if commands contained a '-'. */
61 unsigned int good_stdin:1; /* Nonzero if this child has a good stdin. */
62 unsigned int deleted:1; /* Nonzero if targets have been deleted. */
63 unsigned int recursive:1; /* Nonzero for recursive command ('+' etc.) */
64 unsigned int jobslot:1; /* Nonzero if it's reserved a job slot. */
65 unsigned int dontcare:1; /* Saved dontcare flag. */
68 extern struct child *children;
70 /* A signal handler for SIGCHLD, if needed. */
71 RETSIGTYPE child_handler (int sig);
72 int is_bourne_compatible_shell(const char *path);
73 void new_job (struct file *file);
74 void reap_children (int block, int err);
75 void start_waiting_jobs (void);
77 char **construct_command_argv (char *line, char **restp, struct file *file,
78 int cmd_flags, char** batch_file);
80 pid_t child_execute_job (struct childbase *child, int good_stdin, char **argv);
83 void exec_command (char **argv) NORETURN;
84 #elif defined(__EMX__)
85 int exec_command (char **argv, char **envp);
87 void exec_command (char **argv, char **envp) NORETURN;
90 void unblock_all_sigs (void);
92 extern unsigned int job_slots_used;
93 extern unsigned int jobserver_tokens;