make/job.h
2017-07-09 21:52:28 -04:00

79 lines
3 KiB
C

/* Definitions for managing subprocesses in GNU Make.
Copyright (C) 1992-2017 Free Software Foundation, Inc.
This file is part of GNU Make.
GNU Make is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3 of the License, or (at your option) any later
version.
GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>. */
#include "output.h"
/* Structure describing a running or dead child process. */
struct child
{
struct child *next; /* Link in the chain. */
struct file *file; /* File being remade. */
char **environment; /* Environment for commands. */
char *sh_batch_file; /* Script file for shell commands */
char **command_lines; /* Array of variable-expanded cmd lines. */
char *command_ptr; /* Ptr into command_lines[command_line]. */
#ifdef VMS
char *comname; /* Temporary command file name */
int efn; /* Completion event flag number */
int cstatus; /* Completion status */
int vms_launch_status; /* non-zero if lib$spawn, etc failed */
#endif
unsigned int command_line; /* Index into command_lines. */
struct output output; /* Output for this child. */
pid_t pid; /* Child process's ID number. */
unsigned int remote:1; /* Nonzero if executing remotely. */
unsigned int noerror:1; /* Nonzero if commands contained a '-'. */
unsigned int good_stdin:1; /* Nonzero if this child has a good stdin. */
unsigned int deleted:1; /* Nonzero if targets have been deleted. */
unsigned int recursive:1; /* Nonzero for recursive command ('+' etc.) */
unsigned int dontcare:1; /* Saved dontcare flag. */
};
extern struct child *children;
/* A signal handler for SIGCHLD, if needed. */
RETSIGTYPE child_handler (int sig);
int is_bourne_compatible_shell(const char *path);
void new_job (struct file *file);
void reap_children (int block, int err);
void start_waiting_jobs (void);
char **construct_command_argv (char *line, char **restp, struct file *file,
int cmd_flags, char** batch_file);
#ifdef VMS
int child_execute_job (struct child *child, char *argv);
#else
int child_execute_job (struct output *out, int good_stdin, char **argv, char **envp);
#endif
#ifdef _AMIGA
void exec_command (char **argv) __attribute__ ((noreturn));
#elif defined(__EMX__)
int exec_command (char **argv, char **envp);
#else
void exec_command (char **argv, char **envp) __attribute__ ((noreturn));
#endif
void unblock_all_sigs (void);
extern unsigned int job_slots_used;
extern unsigned int jobserver_tokens;