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GDB (API)
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GDB (API)
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00001 /* Standard wait macros. 00002 Copyright (C) 2000-2013 Free Software Foundation, Inc. 00003 00004 This file is part of GDB. 00005 00006 This program is free software; you can redistribute it and/or modify 00007 it under the terms of the GNU General Public License as published by 00008 the Free Software Foundation; either version 3 of the License, or 00009 (at your option) any later version. 00010 00011 This program is distributed in the hope that it will be useful, 00012 but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 GNU General Public License for more details. 00015 00016 You should have received a copy of the GNU General Public License 00017 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 00018 00019 #ifndef GDB_WAIT_H 00020 #define GDB_WAIT_H 00021 00022 #ifdef HAVE_SYS_WAIT_H 00023 #include <sys/wait.h> /* POSIX */ 00024 #else 00025 #ifdef HAVE_WAIT_H 00026 #include <wait.h> /* legacy */ 00027 #endif 00028 #endif 00029 00030 /* Define how to access the int that the wait system call stores. 00031 This has been compatible in all Unix systems since time immemorial, 00032 but various well-meaning people have defined various different 00033 words for the same old bits in the same old int (sometimes claimed 00034 to be a struct). We just know it's an int and we use these macros 00035 to access the bits. */ 00036 00037 /* The following macros are defined equivalently to their definitions 00038 in POSIX.1. We fail to define WNOHANG and WUNTRACED, which POSIX.1 00039 <sys/wait.h> defines, since our code does not use waitpid() (but 00040 NOTE exception for GNU/Linux below). We also fail to declare 00041 wait() and waitpid(). */ 00042 00043 #ifndef WIFEXITED 00044 #define WIFEXITED(w) (((w)&0377) == 0) 00045 #endif 00046 00047 #ifndef WIFSIGNALED 00048 #define WIFSIGNALED(w) (((w)&0377) != 0177 && ((w)&~0377) == 0) 00049 #endif 00050 00051 #ifndef WIFSTOPPED 00052 #ifdef IBM6000 00053 00054 /* Unfortunately, the above comment (about being compatible in all Unix 00055 systems) is not quite correct for AIX, sigh. And AIX 3.2 can generate 00056 status words like 0x57c (sigtrap received after load), and gdb would 00057 choke on it. */ 00058 00059 #define WIFSTOPPED(w) ((w)&0x40) 00060 00061 #else 00062 #define WIFSTOPPED(w) (((w)&0377) == 0177) 00063 #endif 00064 #endif 00065 00066 #ifndef WEXITSTATUS 00067 #define WEXITSTATUS(w) (((w) >> 8) & 0377) /* same as WRETCODE */ 00068 #endif 00069 00070 #ifndef WTERMSIG 00071 #define WTERMSIG(w) ((w) & 0177) 00072 #endif 00073 00074 #ifndef WSTOPSIG 00075 #define WSTOPSIG WEXITSTATUS 00076 #endif 00077 00078 /* These are not defined in POSIX, but are used by our programs. */ 00079 00080 #ifndef WSETEXIT 00081 # ifdef W_EXITCODE 00082 #define WSETEXIT(w,status) ((w) = W_EXITCODE(status,0)) 00083 # else 00084 #define WSETEXIT(w,status) ((w) = (0 | ((status) << 8))) 00085 # endif 00086 #endif 00087 00088 #ifndef WSETSTOP 00089 # ifdef W_STOPCODE 00090 #define WSETSTOP(w,sig) ((w) = W_STOPCODE(sig)) 00091 # else 00092 #define WSETSTOP(w,sig) ((w) = (0177 | ((sig) << 8))) 00093 # endif 00094 #endif 00095 00096 /* For native GNU/Linux we may use waitpid and the __WCLONE option. 00097 <GRIPE> It is of course dangerous not to use the REAL header file... 00098 </GRIPE>. */ 00099 00100 /* Bits in the third argument to `waitpid'. */ 00101 #ifndef WNOHANG 00102 #define WNOHANG 1 /* Don't block waiting. */ 00103 #endif 00104 00105 #ifndef WUNTRACED 00106 #define WUNTRACED 2 /* Report status of stopped children. */ 00107 #endif 00108 00109 #ifndef __WCLONE 00110 #define __WCLONE 0x80000000 /* Wait for cloned process. */ 00111 #endif 00112 00113 #endif
1.7.6.1
