| 1 | /* Definitions for managing subprocesses in GNU Make.
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| 2 | Copyright (C) 1992, 1993, 1996, 1999 Free Software Foundation, Inc.
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| 3 | This file is part of GNU Make.
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| 4 |
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| 5 | GNU Make is free software; you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 2, or (at your option)
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| 8 | any later version.
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| 9 |
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| 10 | GNU Make is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with GNU Make; see the file COPYING. If not, write to
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| 17 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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| 18 | Boston, MA 02111-1307, USA. */
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| 19 |
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| 20 | #ifndef SEEN_JOB_H
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| 21 | #define SEEN_JOB_H
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| 22 |
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| 23 | #ifdef HAVE_FCNTL_H
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| 24 | # include <fcntl.h>
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| 25 | #else
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| 26 | # include <sys/file.h>
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| 27 | #endif
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| 28 |
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| 29 | /* How to set close-on-exec for a file descriptor. */
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| 30 |
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| 31 | #if !defined F_SETFD
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| 32 | # define CLOSE_ON_EXEC(_d)
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| 33 | #else
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| 34 | # ifndef FD_CLOEXEC
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| 35 | # define FD_CLOEXEC 1
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| 36 | # endif
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| 37 | # define CLOSE_ON_EXEC(_d) (void) fcntl ((_d), F_SETFD, FD_CLOEXEC)
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| 38 | #endif
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| 39 |
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| 40 | /* Structure describing a running or dead child process. */
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| 41 |
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| 42 | struct child
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| 43 | {
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| 44 | struct child *next; /* Link in the chain. */
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| 45 |
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| 46 | struct file *file; /* File being remade. */
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| 47 |
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| 48 | char **environment; /* Environment for commands. */
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| 49 |
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| 50 | char **command_lines; /* Array of variable-expanded cmd lines. */
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| 51 | unsigned int command_line; /* Index into above. */
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| 52 | char *command_ptr; /* Ptr into command_lines[command_line]. */
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| 53 |
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| 54 | pid_t pid; /* Child process's ID number. */
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| 55 | #ifdef VMS
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| 56 | int efn; /* Completion event flag number */
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| 57 | int cstatus; /* Completion status */
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| 58 | #endif
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| 59 | char *sh_batch_file; /* Script file for shell commands */
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| 60 | #ifdef MAKE_DLLSHELL
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| 61 | int status; /* Status of the job.
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| 62 | Another thread might set this. */
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| 63 | char dllshell_done; /* Nonzero if executed thru a dll shell.
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| 64 | Another thread might set this. */
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| 65 | unsigned int dllshelled:1; /* Nonzero if executed thru dllshell. */
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| 66 | #endif
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| 67 | unsigned int remote:1; /* Nonzero if executing remotely. */
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| 68 |
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| 69 | unsigned int noerror:1; /* Nonzero if commands contained a `-'. */
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| 70 |
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| 71 | unsigned int good_stdin:1; /* Nonzero if this child has a good stdin. */
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| 72 | unsigned int deleted:1; /* Nonzero if targets have been deleted. */
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| 73 | };
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| 74 |
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| 75 | extern struct child *children;
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| 76 |
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| 77 | extern void new_job PARAMS ((struct file *file));
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| 78 | extern void reap_children PARAMS ((int block, int err));
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| 79 | extern void start_waiting_jobs PARAMS ((void));
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| 80 |
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| 81 | extern char **construct_command_argv PARAMS ((char *line, char **restp, struct file *file, char** batch_file));
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| 82 | #ifdef VMS
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| 83 | extern int child_execute_job PARAMS ((char *argv, struct child *child));
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| 84 | #elif defined(__EMX__) || defined (MAKE_DLLSHELL)
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| 85 | extern int child_execute_job PARAMS ((int stdin_fd, int stdout_fd, char **argv, char **envp, struct child *child));
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| 86 | #else
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| 87 | extern void child_execute_job PARAMS ((int stdin_fd, int stdout_fd, char **argv, char **envp));
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| 88 | #endif
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| 89 | #ifdef _AMIGA
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| 90 | extern void exec_command PARAMS ((char **argv));
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| 91 | #elif defined(__EMX__)
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| 92 | extern int exec_command PARAMS ((char **argv, char **envp));
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| 93 | #else
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| 94 | extern void exec_command PARAMS ((char **argv, char **envp));
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| 95 | #endif
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| 96 |
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| 97 | extern unsigned int job_slots_used;
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| 98 |
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| 99 | extern void block_sigs PARAMS ((void));
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| 100 | #ifdef POSIX
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| 101 | extern void unblock_sigs PARAMS ((void));
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| 102 | #else
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| 103 | #ifdef HAVE_SIGSETMASK
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| 104 | extern int fatal_signal_mask;
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| 105 | #define unblock_sigs() sigsetmask (0)
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| 106 | #else
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| 107 | #define unblock_sigs()
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| 108 | #endif
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| 109 | #endif
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| 110 |
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| 111 | #ifdef MAKE_DLLSHELL
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| 112 | extern pid_t wait_jobs PARAMS ((int *status, int block));
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| 113 | #endif
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| 114 |
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| 115 | #endif /* SEEN_JOB_H */
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