| /* Definitions of status bits for `wait' et al. |
| Copyright (C) 1992-2019 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #if !defined _SYS_WAIT_H && !defined _STDLIB_H |
| # error "Never include <bits/waitstatus.h> directly; use <sys/wait.h> instead." |
| #endif |
| |
| |
| /* Everything extant so far uses these same bits. */ |
| |
| |
| /* If WIFEXITED(STATUS), the low-order 8 bits of the status. */ |
| #define __WEXITSTATUS(status) (((status) & 0xff00) >> 8) |
| |
| /* If WIFSIGNALED(STATUS), the terminating signal. */ |
| #define __WTERMSIG(status) ((status) & 0x7f) |
| |
| /* If WIFSTOPPED(STATUS), the signal that stopped the child. */ |
| #define __WSTOPSIG(status) __WEXITSTATUS(status) |
| |
| /* Nonzero if STATUS indicates normal termination. */ |
| #define __WIFEXITED(status) (__WTERMSIG(status) == 0) |
| |
| /* Nonzero if STATUS indicates termination by a signal. */ |
| #define __WIFSIGNALED(status) \ |
| (((signed char) (((status) & 0x7f) + 1) >> 1) > 0) |
| |
| /* Nonzero if STATUS indicates the child is stopped. */ |
| #define __WIFSTOPPED(status) (((status) & 0xff) == 0x7f) |
| |
| /* Nonzero if STATUS indicates the child continued after a stop. We only |
| define this if <bits/waitflags.h> provides the WCONTINUED flag bit. */ |
| #ifdef WCONTINUED |
| # define __WIFCONTINUED(status) ((status) == __W_CONTINUED) |
| #endif |
| |
| /* Nonzero if STATUS indicates the child dumped core. */ |
| #define __WCOREDUMP(status) ((status) & __WCOREFLAG) |
| |
| /* Macros for constructing status values. */ |
| #define __W_EXITCODE(ret, sig) ((ret) << 8 | (sig)) |
| #define __W_STOPCODE(sig) ((sig) << 8 | 0x7f) |
| #define __W_CONTINUED 0xffff |
| #define __WCOREFLAG 0x80 |
