- Fix broken handling of order-only prereqs in secondary expansion
[make.git] / job.h
blobea6d7e8fa0b421d1f7c2310100e5453637785eae
1 /* Definitions for managing subprocesses in GNU Make.
2 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
3 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
4 This file is part of GNU Make.
6 GNU Make is free software; you can redistribute it and/or modify it under the
7 terms of the GNU General Public License as published by the Free Software
8 Foundation; either version 3 of the License, or (at your option) any later
9 version.
11 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
13 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along with
16 this program. If not, see <http://www.gnu.org/licenses/>. */
18 #ifndef SEEN_JOB_H
19 #define SEEN_JOB_H
21 #ifdef HAVE_FCNTL_H
22 # include <fcntl.h>
23 #else
24 # include <sys/file.h>
25 #endif
27 /* How to set close-on-exec for a file descriptor. */
29 #if !defined F_SETFD
30 # define CLOSE_ON_EXEC(_d)
31 #else
32 # ifndef FD_CLOEXEC
33 # define FD_CLOEXEC 1
34 # endif
35 # define CLOSE_ON_EXEC(_d) (void) fcntl ((_d), F_SETFD, FD_CLOEXEC)
36 #endif
38 /* Structure describing a running or dead child process. */
40 struct child
42 struct child *next; /* Link in the chain. */
44 struct file *file; /* File being remade. */
46 char **environment; /* Environment for commands. */
48 char **command_lines; /* Array of variable-expanded cmd lines. */
49 unsigned int command_line; /* Index into above. */
50 char *command_ptr; /* Ptr into command_lines[command_line]. */
52 pid_t pid; /* Child process's ID number. */
53 #ifdef VMS
54 int efn; /* Completion event flag number */
55 int cstatus; /* Completion status */
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 void new_job (struct file *file);
70 void reap_children (int block, int err);
71 void start_waiting_jobs (void);
73 char **construct_command_argv (char *line, char **restp, struct file *file,
74 int cmd_flags, char** batch_file);
75 #ifdef VMS
76 int child_execute_job (char *argv, struct child *child);
77 #elif defined(__EMX__)
78 int child_execute_job (int stdin_fd, int stdout_fd, char **argv, char **envp);
79 #else
80 void child_execute_job (int stdin_fd, int stdout_fd, char **argv, char **envp);
81 #endif
82 #ifdef _AMIGA
83 void exec_command (char **argv);
84 #elif defined(__EMX__)
85 int exec_command (char **argv, char **envp);
86 #else
87 void exec_command (char **argv, char **envp);
88 #endif
90 extern unsigned int job_slots_used;
92 void block_sigs (void);
93 #ifdef POSIX
94 void unblock_sigs (void);
95 #else
96 #ifdef HAVE_SIGSETMASK
97 extern int fatal_signal_mask;
98 #define unblock_sigs() sigsetmask (0)
99 #else
100 #define unblock_sigs()
101 #endif
102 #endif
104 extern unsigned int jobserver_tokens;
106 #endif /* SEEN_JOB_H */