projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 28f540f4 | 1 | /* Definitions of status bits for `wait' et al. |
| 688903eb | 2 | Copyright (C) 1992-2018 Free Software Foundation, Inc. |
| 54d79e99 UD |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 54d79e99 UD |
9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 41bdb6e2 | 13 | Lesser General Public License for more details. |
| 54d79e99 | 14 | |
| 41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
| 59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 28f540f4 | 18 | |
| 9323b58f | 19 | #if !defined _SYS_WAIT_H && !defined _STDLIB_H |
| f4017d20 | 20 | # error "Never include <bits/waitstatus.h> directly; use <sys/wait.h> instead." |
| 5107cf1d UD |
21 | #endif |
| 22 | ||
| 23 | ||
| 28f540f4 RM |
24 | /* Everything extant so far uses these same bits. */ |
| 25 | ||
| 28f540f4 RM |
26 | |
| 27 | /* If WIFEXITED(STATUS), the low-order 8 bits of the status. */ | |
| 28 | #define __WEXITSTATUS(status) (((status) & 0xff00) >> 8) | |
| 29 | ||
| 30 | /* If WIFSIGNALED(STATUS), the terminating signal. */ | |
| 31 | #define __WTERMSIG(status) ((status) & 0x7f) | |
| 32 | ||
| 33 | /* If WIFSTOPPED(STATUS), the signal that stopped the child. */ | |
| 34 | #define __WSTOPSIG(status) __WEXITSTATUS(status) | |
| 35 | ||
| 36 | /* Nonzero if STATUS indicates normal termination. */ | |
| 37 | #define __WIFEXITED(status) (__WTERMSIG(status) == 0) | |
| 38 | ||
| 39 | /* Nonzero if STATUS indicates termination by a signal. */ | |
| a044c713 | 40 | #define __WIFSIGNALED(status) \ |
| f26e84d3 | 41 | (((signed char) (((status) & 0x7f) + 1) >> 1) > 0) |
| 28f540f4 RM |
42 | |
| 43 | /* Nonzero if STATUS indicates the child is stopped. */ | |
| 44 | #define __WIFSTOPPED(status) (((status) & 0xff) == 0x7f) | |
| 45 | ||
| a044c713 RM |
46 | /* Nonzero if STATUS indicates the child continued after a stop. We only |
| 47 | define this if <bits/waitflags.h> provides the WCONTINUED flag bit. */ | |
| 48 | #ifdef WCONTINUED | |
| 49 | # define __WIFCONTINUED(status) ((status) == __W_CONTINUED) | |
| 50 | #endif | |
| 51 | ||
| 28f540f4 RM |
52 | /* Nonzero if STATUS indicates the child dumped core. */ |
| 53 | #define __WCOREDUMP(status) ((status) & __WCOREFLAG) | |
| 54 | ||
| 55 | /* Macros for constructing status values. */ | |
| 56 | #define __W_EXITCODE(ret, sig) ((ret) << 8 | (sig)) | |
| 57 | #define __W_STOPCODE(sig) ((sig) << 8 | 0x7f) | |
| a044c713 | 58 | #define __W_CONTINUED 0xffff |
| 28f540f4 | 59 | #define __WCOREFLAG 0x80 |