1 /* Wrapper implementation for waitpid for GNU/Linux (LWP layer).
3 Copyright (C) 2001-2017 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 #include "common-defs.h"
23 /* FIXME: server.h is required for the definition of debug_threads
24 which is used in the gdbserver-specific debug printing in
25 linux_debug. This code should be made available to GDB also,
26 but the lack of a suitable flag to enable it prevents this. */
30 #include "linux-nat.h"
31 #include "linux-waitpid.h"
34 /* Print debugging output based on the format string FORMAT and
38 linux_debug (const char *format
, ...)
44 va_start (args
, format
);
45 vfprintf (stderr
, format
, args
);
51 /* Convert wait status STATUS to a string. Used for printing debug
55 status_to_str (int status
)
59 if (WIFSTOPPED (status
))
61 if (WSTOPSIG (status
) == SYSCALL_SIGTRAP
)
62 snprintf (buf
, sizeof (buf
), "%s (stopped at syscall)",
65 snprintf (buf
, sizeof (buf
), "%s (stopped)",
66 strsignal (WSTOPSIG (status
)));
68 else if (WIFSIGNALED (status
))
69 snprintf (buf
, sizeof (buf
), "%s (terminated)",
70 strsignal (WTERMSIG (status
)));
72 snprintf (buf
, sizeof (buf
), "%d (exited)", WEXITSTATUS (status
));
77 /* See linux-waitpid.h. */
80 my_waitpid (int pid
, int *status
, int flags
)
84 linux_debug ("my_waitpid (%d, 0x%x)\n", pid
, flags
);
88 ret
= waitpid (pid
, status
, flags
);
90 while (ret
== -1 && errno
== EINTR
);
93 linux_debug ("my_waitpid (%d, 0x%x): status(%x), %d\n",
94 pid
, flags
, (ret
> 0 && status
!= NULL
) ? *status
: -1, ret
);
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