projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 28f540f4 | 1 | /* Definitions of status bits for `wait' et al. |
| c4029823 | 2 | Copyright (C) 1992, 1994, 1996 Free Software Foundation, Inc. |
| 28f540f4 RM |
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 | |
| 6 | modify it under the terms of the GNU Library General Public License as | |
| 7 | published by the Free Software Foundation; either version 2 of the | |
| 8 | License, or (at your option) any later version. | |
| 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 | |
| 13 | Library General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Library General Public | |
| 16 | License along with the GNU C Library; see the file COPYING.LIB. If | |
| 17 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
| 18 | Cambridge, MA 02139, USA. */ | |
| 19 | ||
| 20 | /* Everything extant so far uses these same bits. */ | |
| 21 | ||
| 22 | #ifndef _WAITSTATUS_H | |
| 23 | #define _WAITSTATUS_H | |
| 24 | ||
| 25 | /* If WIFEXITED(STATUS), the low-order 8 bits of the status. */ | |
| 26 | #define __WEXITSTATUS(status) (((status) & 0xff00) >> 8) | |
| 27 | ||
| 28 | /* If WIFSIGNALED(STATUS), the terminating signal. */ | |
| 29 | #define __WTERMSIG(status) ((status) & 0x7f) | |
| 30 | ||
| 31 | /* If WIFSTOPPED(STATUS), the signal that stopped the child. */ | |
| 32 | #define __WSTOPSIG(status) __WEXITSTATUS(status) | |
| 33 | ||
| 34 | /* Nonzero if STATUS indicates normal termination. */ | |
| 35 | #define __WIFEXITED(status) (__WTERMSIG(status) == 0) | |
| 36 | ||
| 37 | /* Nonzero if STATUS indicates termination by a signal. */ | |
| 38 | #ifdef __GNUC__ | |
| 39 | #define __WIFSIGNALED(status) \ | |
| 40 | (__extension__ ({ int __stat = (status); \ | |
| 41 | !__WIFSTOPPED(__stat) && !__WIFEXITED(__stat); })) | |
| 42 | #else /* Not GCC. */ | |
| 43 | #define __WIFSIGNALED(status) (!__WIFSTOPPED(status) && !__WIFEXITED(status)) | |
| 44 | #endif /* GCC. */ | |
| 45 | ||
| 46 | /* Nonzero if STATUS indicates the child is stopped. */ | |
| 47 | #define __WIFSTOPPED(status) (((status) & 0xff) == 0x7f) | |
| 48 | ||
| 49 | /* Nonzero if STATUS indicates the child dumped core. */ | |
| 50 | #define __WCOREDUMP(status) ((status) & __WCOREFLAG) | |
| 51 | ||
| 52 | /* Macros for constructing status values. */ | |
| 53 | #define __W_EXITCODE(ret, sig) ((ret) << 8 | (sig)) | |
| 54 | #define __W_STOPCODE(sig) ((sig) << 8 | 0x7f) | |
| 55 | #define __WCOREFLAG 0x80 | |
| 56 | ||
| 57 | ||
| 58 | #ifdef __USE_BSD | |
| 59 | ||
| 60 | #include <endian.h> | |
| 61 | ||
| 62 | union wait | |
| 63 | { | |
| c4029823 | 64 | int w_status; |
| 28f540f4 RM |
65 | struct |
| 66 | { | |
| 67 | #if __BYTE_ORDER == __LITTLE_ENDIAN | |
| 68 | unsigned int __w_termsig:7; /* Terminating signal. */ | |
| 69 | unsigned int __w_coredump:1; /* Set if dumped core. */ | |
| 70 | unsigned int __w_retcode:8; /* Return code if exited normally. */ | |
| 71 | unsigned int:16; | |
| 72 | #endif /* Little endian. */ | |
| 73 | #if __BYTE_ORDER == __BIG_ENDIAN | |
| 74 | unsigned int:16; | |
| 75 | unsigned int __w_retcode:8; | |
| 76 | unsigned int __w_coredump:1; | |
| 77 | unsigned int __w_termsig:7; | |
| 78 | #endif /* Big endian. */ | |
| 79 | } __wait_terminated; | |
| 80 | struct | |
| 81 | { | |
| 82 | #if __BYTE_ORDER == __LITTLE_ENDIAN | |
| 83 | unsigned int __w_stopval:8; /* W_STOPPED if stopped. */ | |
| 84 | unsigned int __w_stopsig:8; /* Stopping signal. */ | |
| 85 | unsigned int:16; | |
| 86 | #endif /* Little endian. */ | |
| 87 | #if __BYTE_ORDER == __BIG_ENDIAN | |
| 88 | unsigned int:16; | |
| 89 | unsigned int __w_stopsig:8; /* Stopping signal. */ | |
| 90 | unsigned int __w_stopval:8; /* W_STOPPED if stopped. */ | |
| 91 | #endif /* Big endian. */ | |
| 92 | } __wait_stopped; | |
| 93 | }; | |
| 94 | ||
| 95 | #define w_termsig __wait_terminated.__w_termsig | |
| 96 | #define w_coredump __wait_terminated.__w_coredump | |
| 97 | #define w_retcode __wait_terminated.__w_retcode | |
| 98 | #define w_stopsig __wait_stopped.__w_stopsig | |
| 99 | #define w_stopval __wait_stopped.__w_stopval | |
| 100 | ||
| 101 | #endif /* Use BSD. */ | |
| 102 | ||
| 103 | ||
| 104 | #endif /* waitstatus.h */ |