1 /* Definitions for managing subprocesses in GNU Make.
2 Copyright (C) 1992-2012 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/>. */
23 # include <sys/file.h>
26 /* How to set close-on-exec for a file descriptor. */
29 # define CLOSE_ON_EXEC(_d)
34 # define CLOSE_ON_EXEC(_d) (void) fcntl ((_d), F_SETFD, FD_CLOEXEC)
37 /* Structure describing a running or dead child process. */
41 struct child
*next
; /* Link in the chain. */
43 struct file
*file
; /* File being remade. */
45 char **environment
; /* Environment for commands. */
46 char *sh_batch_file
; /* Script file for shell commands */
47 char **command_lines
; /* Array of variable-expanded cmd lines. */
48 char *command_ptr
; /* Ptr into command_lines[command_line]. */
51 char *comname
; /* Temporary command file name */
52 int efn
; /* Completion event flag number */
53 int cstatus
; /* Completion status */
56 unsigned int command_line
; /* Index into command_lines. */
57 pid_t pid
; /* Child process's ID number. */
58 unsigned int remote
:1; /* Nonzero if executing remotely. */
59 unsigned int noerror
:1; /* Nonzero if commands contained a '-'. */
60 unsigned int good_stdin
:1; /* Nonzero if this child has a good stdin. */
61 unsigned int deleted
:1; /* Nonzero if targets have been deleted. */
62 unsigned int dontcare
:1; /* Saved dontcare flag. */
65 extern struct child
*children
;
67 int is_bourne_compatible_shell(const char *path
);
68 void new_job (struct file
*file
);
69 void reap_children (int block
, int err
);
70 void start_waiting_jobs (void);
72 char **construct_command_argv (char *line
, char **restp
, struct file
*file
,
73 int cmd_flags
, char** batch_file
);
75 int child_execute_job (char *argv
, struct child
*child
);
76 #elif defined(__EMX__)
77 int child_execute_job (int stdin_fd
, int stdout_fd
, char **argv
, char **envp
);
79 void child_execute_job (int stdin_fd
, int stdout_fd
, char **argv
, char **envp
);
82 void exec_command (char **argv
);
83 #elif defined(__EMX__)
84 int exec_command (char **argv
, char **envp
);
86 void exec_command (char **argv
, char **envp
);
89 extern unsigned int job_slots_used
;
91 void block_sigs (void);
93 void unblock_sigs (void);
95 #ifdef HAVE_SIGSETMASK
96 extern int fatal_signal_mask
;
97 #define unblock_sigs() sigsetmask (0)
99 #define unblock_sigs()
103 extern unsigned int jobserver_tokens
;
105 #endif /* SEEN_JOB_H */