Keep the command line on the heap to avoid stack overflow.
[make.git] / job.h
blob68760f2f3c15289d6e72026e2a76a4dca9eef8fa
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
8 version.
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/>. */
17 #ifndef SEEN_JOB_H
18 #define SEEN_JOB_H
20 #ifdef HAVE_FCNTL_H
21 # include <fcntl.h>
22 #else
23 # include <sys/file.h>
24 #endif
26 /* How to set close-on-exec for a file descriptor. */
28 #if !defined F_SETFD
29 # define CLOSE_ON_EXEC(_d)
30 #else
31 # ifndef FD_CLOEXEC
32 # define FD_CLOEXEC 1
33 # endif
34 # define CLOSE_ON_EXEC(_d) (void) fcntl ((_d), F_SETFD, FD_CLOEXEC)
35 #endif
37 /* Structure describing a running or dead child process. */
39 struct child
41 struct child *next; /* Link in the chain. */
43 struct file *file; /* File being remade. */
45 char **environment; /* Environment for commands. */
47 char **command_lines; /* Array of variable-expanded cmd lines. */
48 unsigned int command_line; /* Index into above. */
49 char *command_ptr; /* Ptr into command_lines[command_line]. */
51 pid_t pid; /* Child process's ID number. */
52 #ifdef VMS
53 int efn; /* Completion event flag number */
54 int cstatus; /* Completion status */
55 char *comname; /* Temporary command file name */
56 #endif
57 char *sh_batch_file; /* Script file for shell commands */
58 unsigned int remote:1; /* Nonzero if executing remotely. */
60 unsigned int noerror:1; /* Nonzero if commands contained a '-'. */
62 unsigned int good_stdin:1; /* Nonzero if this child has a good stdin. */
63 unsigned int deleted:1; /* Nonzero if targets have been deleted. */
64 unsigned int dontcare:1; /* Saved dontcare flag. */
67 extern struct child *children;
69 int is_bourne_compatible_shell(const char *path);
70 void new_job (struct file *file);
71 void reap_children (int block, int err);
72 void start_waiting_jobs (void);
74 char **construct_command_argv (char *line, char **restp, struct file *file,
75 int cmd_flags, char** batch_file);
76 #ifdef VMS
77 int child_execute_job (char *argv, struct child *child);
78 #elif defined(__EMX__)
79 int child_execute_job (int stdin_fd, int stdout_fd, char **argv, char **envp);
80 #else
81 void child_execute_job (int stdin_fd, int stdout_fd, char **argv, char **envp);
82 #endif
83 #ifdef _AMIGA
84 void exec_command (char **argv);
85 #elif defined(__EMX__)
86 int exec_command (char **argv, char **envp);
87 #else
88 void exec_command (char **argv, char **envp);
89 #endif
91 extern unsigned int job_slots_used;
93 void block_sigs (void);
94 #ifdef POSIX
95 void unblock_sigs (void);
96 #else
97 #ifdef HAVE_SIGSETMASK
98 extern int fatal_signal_mask;
99 #define unblock_sigs() sigsetmask (0)
100 #else
101 #define unblock_sigs()
102 #endif
103 #endif
105 extern unsigned int jobserver_tokens;
107 #endif /* SEEN_JOB_H */