src/syswait.h

/* Define wait system call interface for Emacs.
   Copyright (C) 1993-1995, 2000-2013 Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs 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 Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */

/* Define the structure that the wait system call stores.
   On many systems, there is a structure defined for this.
   But on vanilla-ish USG systems there is not.  */

#ifndef EMACS_SYSWAIT_H
#define EMACS_SYSWAIT_H

#include <stdbool.h>
#include <sys/types.h>

#ifdef HAVE_SYS_WAIT_H	/* We have sys/wait.h with POSIXoid definitions. */
#include <sys/wait.h>
#endif  /* !HAVE_SYS_WAIT_H */

#ifndef WCOREDUMP		/* not POSIX */
#define WCOREDUMP(status) ((status) & 0x80)
#endif
#ifndef WEXITSTATUS
#define WEXITSTATUS(status) (((status)  & 0xff00) >> 8)
#endif
#ifndef WIFEXITED
#define WIFEXITED(status) (WTERMSIG(status) == 0)
#endif
#ifndef WIFSTOPPED
#define WIFSTOPPED(status) (((status) & 0xff) == 0x7f)
#endif
#ifndef WIFSIGNALED
#define WIFSIGNALED(status) (!WIFSTOPPED(status) && !WIFEXITED(status))
#endif
#ifndef WSTOPSIG
#define WSTOPSIG(status) WEXITSTATUS(status)
#endif
#ifndef WTERMSIG
#define WTERMSIG(status) ((status) & 0x7f)
#endif

/* Defined in process.c.  */
extern void record_deleted_pid (pid_t);

/* Defined in sysdep.c.  */
extern void wait_for_termination (pid_t, int *, bool);
extern pid_t child_status_changed (pid_t, int *, int);

#endif /* EMACS_SYSWAIT_H */
Commit	Line	Data
	1	/* Define wait system call interface for Emacs.
	2	Copyright (C) 1993-1995, 2000-2013 Free Software Foundation, Inc.
	3
	4	This file is part of GNU Emacs.
	5
	6	GNU Emacs is free software: you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation, either version 3 of the License, or
	9	(at your option) any later version.
	10
	11	GNU Emacs is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
	18
	19	/* Define the structure that the wait system call stores.
	20	On many systems, there is a structure defined for this.
	21	But on vanilla-ish USG systems there is not. */
	22
	23	#ifndef EMACS_SYSWAIT_H
	24	#define EMACS_SYSWAIT_H
	25
	26	#include <stdbool.h>
	27	#include <sys/types.h>
	28
	29	#ifdef HAVE_SYS_WAIT_H /* We have sys/wait.h with POSIXoid definitions. */
	30	#include <sys/wait.h>
	31	#endif /* !HAVE_SYS_WAIT_H */
	32
	33	#ifndef WCOREDUMP /* not POSIX */
	34	#define WCOREDUMP(status) ((status) & 0x80)
	35	#endif
	36	#ifndef WEXITSTATUS
	37	#define WEXITSTATUS(status) (((status) & 0xff00) >> 8)
	38	#endif
	39	#ifndef WIFEXITED
	40	#define WIFEXITED(status) (WTERMSIG(status) == 0)
	41	#endif
	42	#ifndef WIFSTOPPED
	43	#define WIFSTOPPED(status) (((status) & 0xff) == 0x7f)
	44	#endif
	45	#ifndef WIFSIGNALED
	46	#define WIFSIGNALED(status) (!WIFSTOPPED(status) && !WIFEXITED(status))
	47	#endif
	48	#ifndef WSTOPSIG
	49	#define WSTOPSIG(status) WEXITSTATUS(status)
	50	#endif
	51	#ifndef WTERMSIG
	52	#define WTERMSIG(status) ((status) & 0x7f)
	53	#endif
	54
	55	/* Defined in process.c. */
	56	extern void record_deleted_pid (pid_t);
	57
	58	/* Defined in sysdep.c. */
	59	extern void wait_for_termination (pid_t, int *, bool);
	60	extern pid_t child_status_changed (pid_t, int *, int);
	61
	62	#endif /* EMACS_SYSWAIT_H */