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deff9dacc9
Create a new file, output.c, and collect functions that generate output there. We introduce a new global context specifying where output should go (to stdout or to a sync file), and the lowest level output generator chooses where to write output based on that context. This allows us to set the context globally, and all operations that write output (including functions like $(info ...) etc.) will use it. Removed the "--trace=dir" capability. It was too confusing. If you have directory tracking enabled then output sync will print the enter/leave message for each synchronized block. If you don't want that, disable directory tracking.
153 lines
4.7 KiB
C
153 lines
4.7 KiB
C
/* Definitions for managing subprocesses in GNU Make.
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Copyright (C) 1992-2013 Free Software Foundation, Inc.
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This file is part of GNU Make.
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GNU Make is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3 of the License, or (at your option) any later
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version.
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GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "output.h"
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#ifdef HAVE_FCNTL_H
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# include <fcntl.h>
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#else
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# include <sys/file.h>
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#endif
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/* How to set close-on-exec for a file descriptor. */
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#if !defined F_SETFD
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# ifdef WINDOWS32
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# define CLOSE_ON_EXEC(_d) process_noinherit(_d)
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# else
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# define CLOSE_ON_EXEC(_d)
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# endif
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#else
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# ifndef FD_CLOEXEC
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# define FD_CLOEXEC 1
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# endif
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# define CLOSE_ON_EXEC(_d) (void) fcntl ((_d), F_SETFD, FD_CLOEXEC)
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#endif
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#ifdef OUTPUT_SYNC
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# ifdef WINDOWS32
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/* For emulations in w32/compat/posixfcn.c. */
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# define F_GETFD 1
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# define F_SETLKW 2
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/* Implementation note: None of the values of l_type below can be zero
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-- they are compared with a static instance of the struct, so zero
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means unknown/invalid, see w32/compat/posixfcn.c. */
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# define F_WRLCK 1
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# define F_UNLCK 2
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struct flock
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{
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short l_type;
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short l_whence;
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off_t l_start;
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off_t l_len;
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pid_t l_pid;
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};
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/* This type is actually a HANDLE, but we want to avoid including
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windows.h as much as possible. */
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typedef intptr_t sync_handle_t;
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/* Public functions emulated/provided in posixfcn.c. */
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int fcntl (intptr_t fd, int cmd, ...);
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intptr_t create_mutex (void);
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int same_stream (FILE *f1, FILE *f2);
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# define RECORD_SYNC_MUTEX(m) record_sync_mutex(m)
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void record_sync_mutex (const char *str);
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void prepare_mutex_handle_string (intptr_t hdl);
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# else /* !WINDOWS32 */
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typedef int sync_handle_t; /* file descriptor */
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# define RECORD_SYNC_MUTEX(m) (void)(m)
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# endif
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#else /* !OUTPUT_SYNC */
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#define RECORD_SYNC_MUTEX(m) \
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error (NILF, \
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_("-O[TYPE] (--output-sync[=TYPE]) is not configured for this build."));
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#endif /* OUTPUT_SYNC */
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/* Structure describing a running or dead child process. */
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struct child
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{
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struct child *next; /* Link in the chain. */
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struct file *file; /* File being remade. */
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char **environment; /* Environment for commands. */
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char *sh_batch_file; /* Script file for shell commands */
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char **command_lines; /* Array of variable-expanded cmd lines. */
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char *command_ptr; /* Ptr into command_lines[command_line]. */
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#ifdef VMS
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char *comname; /* Temporary command file name */
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int efn; /* Completion event flag number */
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int cstatus; /* Completion status */
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#endif
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unsigned int command_line; /* Index into command_lines. */
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struct output output; /* Output for this child. */
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pid_t pid; /* Child process's ID number. */
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unsigned int remote:1; /* Nonzero if executing remotely. */
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unsigned int noerror:1; /* Nonzero if commands contained a '-'. */
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unsigned int good_stdin:1; /* Nonzero if this child has a good stdin. */
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unsigned int deleted:1; /* Nonzero if targets have been deleted. */
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unsigned int dontcare:1; /* Saved dontcare flag. */
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};
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extern struct child *children;
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int is_bourne_compatible_shell(const char *path);
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void new_job (struct file *file);
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void reap_children (int block, int err);
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void start_waiting_jobs (void);
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char **construct_command_argv (char *line, char **restp, struct file *file,
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int cmd_flags, char** batch_file);
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#ifdef VMS
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int child_execute_job (char *argv, struct child *child);
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#elif defined(__EMX__)
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int child_execute_job (int stdin_fd, int stdout_fd, char **argv, char **envp);
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#else
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void child_execute_job (int stdin_fd, int stdout_fd, char **argv, char **envp);
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#endif
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#ifdef _AMIGA
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void exec_command (char **argv) __attribute__ ((noreturn));
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#elif defined(__EMX__)
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int exec_command (char **argv, char **envp);
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#else
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void exec_command (char **argv, char **envp) __attribute__ ((noreturn));
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#endif
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extern unsigned int job_slots_used;
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void block_sigs (void);
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#ifdef POSIX
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void unblock_sigs (void);
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#else
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#ifdef HAVE_SIGSETMASK
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extern int fatal_signal_mask;
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#define unblock_sigs() sigsetmask (0)
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#else
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#define unblock_sigs()
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#endif
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#endif
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extern unsigned int jobserver_tokens;
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