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- /* Standard wait macros.
- Copyright (C) 2000-2022 Free Software Foundation, Inc.
- This file is part of GDB.
- This program 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.
- This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
- #ifndef COMMON_GDB_WAIT_H
- #define COMMON_GDB_WAIT_H
- #ifdef HAVE_SYS_WAIT_H
- #include <sys/wait.h> /* POSIX */
- #else
- #ifdef HAVE_WAIT_H
- #include <wait.h> /* legacy */
- #endif
- #endif
- /* Define how to access the int that the wait system call stores.
- This has been compatible in all Unix systems since time immemorial,
- but various well-meaning people have defined various different
- words for the same old bits in the same old int (sometimes claimed
- to be a struct). We just know it's an int and we use these macros
- to access the bits. */
- /* The following macros are defined equivalently to their definitions
- in POSIX.1. We fail to define WNOHANG and WUNTRACED, which POSIX.1
- <sys/wait.h> defines, since our code does not use waitpid() (but
- NOTE exception for GNU/Linux below). We also fail to declare
- wait() and waitpid().
- For MinGW, we use the fact that when a Windows program is
- terminated by a fatal exception, its exit code is the value of that
- exception, as defined by the various EXCEPTION_* symbols in the
- Windows API headers. See also gdb_wait.c. */
- #ifndef WIFEXITED
- # ifdef __MINGW32__
- # define WIFEXITED(w) (((w) & 0xC0000000) == 0)
- # else
- # define WIFEXITED(w) (((w)&0377) == 0)
- # endif
- #endif
- #ifndef WIFSIGNALED
- # ifdef __MINGW32__
- # define WIFSIGNALED(w) (((w) & 0xC0000000) == 0xC0000000)
- # else
- # define WIFSIGNALED(w) (((w)&0377) != 0177 && ((w)&~0377) == 0)
- # endif
- #endif
- #ifndef WIFSTOPPED
- #ifdef IBM6000
- /* Unfortunately, the above comment (about being compatible in all Unix
- systems) is not quite correct for AIX, sigh. And AIX 3.2 can generate
- status words like 0x57c (sigtrap received after load), and gdb would
- choke on it. */
- #define WIFSTOPPED(w) ((w)&0x40)
- #else
- #define WIFSTOPPED(w) (((w)&0377) == 0177)
- #endif
- #endif
- #ifndef WEXITSTATUS
- # ifdef __MINGW32__
- # define WEXITSTATUS(w) ((w) & ~0xC0000000)
- # else
- # define WEXITSTATUS(w) (((w) >> 8) & 0377) /* same as WRETCODE */
- # endif
- #endif
- #ifndef WTERMSIG
- # ifdef __MINGW32__
- extern int windows_status_to_termsig (unsigned long);
- # define WTERMSIG(w) windows_status_to_termsig (w)
- # else
- # define WTERMSIG(w) ((w) & 0177)
- # endif
- #endif
- #ifndef WSTOPSIG
- #define WSTOPSIG WEXITSTATUS
- #endif
- /* These are not defined in POSIX, but are used by our programs. */
- #ifndef WSETEXIT
- # ifdef W_EXITCODE
- #define WSETEXIT(w,status) ((w) = W_EXITCODE(status,0))
- # else
- #define WSETEXIT(w,status) ((w) = (0 | ((status) << 8)))
- # endif
- #endif
- #ifndef W_STOPCODE
- #define W_STOPCODE(sig) ((sig) << 8 | 0x7f)
- #endif
- #ifndef WSETSTOP
- #define WSETSTOP(w,sig) ((w) = W_STOPCODE(sig))
- #endif
- /* For native GNU/Linux we may use waitpid and the __WCLONE option.
- <GRIPE> It is of course dangerous not to use the REAL header file...
- </GRIPE>. */
- /* Bits in the third argument to `waitpid'. */
- #ifndef WNOHANG
- #define WNOHANG 1 /* Don't block waiting. */
- #endif
- #ifndef WUNTRACED
- #define WUNTRACED 2 /* Report status of stopped children. */
- #endif
- #ifndef __WCLONE
- #define __WCLONE 0x80000000 /* Wait for cloned process. */
- #endif
- #endif /* COMMON_GDB_WAIT_H */
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