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31aceaef1c
I was looking at some "set debug lin-lwp" logs, and saw that a thread
received the "Child exited" signal. It took me a moment to realize that
this was SIGCHLD. I then thought that it would be nice for
status_to_str to show the signal name (SIGCHLD) in addition to the
description "Child exited", since people are much more used to referring
to signals using their names.
Fortunately, libiberty contains a handy function to get the signal name
from the signal number, strsigno, use that.
The output of "set debug lin-lwp" now looks like:
[linux-nat] linux_nat_wait_1: waitpid 1209631 received SIGTRAP - Trace/breakpoint trap (stopped)
gdb/ChangeLog:
* nat/linux-waitpid.c (status_to_str): Show signal name.
Change-Id: I8ad9b1e744dd64461fd87b08d5c29f9ef97c4691
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/* Wrapper implementation for waitpid for GNU/Linux (LWP layer).
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Copyright (C) 2001-2021 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "gdbsupport/common-defs.h"
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#include "linux-nat.h"
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#include "linux-waitpid.h"
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#include "gdbsupport/gdb_wait.h"
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#include "gdbsupport/eintr.h"
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/* See linux-waitpid.h. */
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std::string
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status_to_str (int status)
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{
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if (WIFSTOPPED (status))
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{
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if (WSTOPSIG (status) == SYSCALL_SIGTRAP)
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return string_printf ("%s - %s (stopped at syscall)",
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strsigno (SIGTRAP), strsignal (SIGTRAP));
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else
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return string_printf ("%s - %s (stopped)",
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strsigno (WSTOPSIG (status)),
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strsignal (WSTOPSIG (status)));
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}
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else if (WIFSIGNALED (status))
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return string_printf ("%s - %s (terminated)",
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strsigno (WTERMSIG (status)),
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strsignal (WTERMSIG (status)));
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else
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return string_printf ("%d (exited)", WEXITSTATUS (status));
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}
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/* See linux-waitpid.h. */
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int
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my_waitpid (int pid, int *status, int flags)
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{
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return gdb::handle_eintr (-1, ::waitpid, pid, status, flags);
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}
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