gdb/nat/linux-waitpid.c

   1 /* Wrapper implementation for waitpid for GNU/Linux (LWP layer).
   2
   3    Copyright (C) 2001-2022 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   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.
  11
  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.
  16
  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/>.  */
  19
  20 #include "gdbsupport/common-defs.h"
  21
  22 #include "linux-nat.h"
  23 #include "linux-waitpid.h"
  24 #include "gdbsupport/gdb_wait.h"
  25 #include "gdbsupport/eintr.h"
  26
  27 /* See linux-waitpid.h.  */
  28
  29 std::string
  30 status_to_str (int status)
  31 {
  32   if (WIFSTOPPED (status))
  33     {
  34       if (WSTOPSIG (status) == SYSCALL_SIGTRAP)
  35         return string_printf ("%s - %s (stopped at syscall)",
  36                               strsigno (SIGTRAP), strsignal (SIGTRAP));
  37       else
  38         return string_printf ("%s - %s (stopped)",
  39                               strsigno (WSTOPSIG (status)),
  40                               strsignal (WSTOPSIG (status)));
  41     }
  42   else if (WIFSIGNALED (status))
  43     return string_printf ("%s - %s (terminated)",
  44                           strsigno (WTERMSIG (status)),
  45                           strsignal (WTERMSIG (status)));
  46   else
  47     return string_printf ("%d (exited)", WEXITSTATUS (status));
  48 }
  49
  50 /* See linux-waitpid.h.  */
  51
  52 int
  53 my_waitpid (int pid, int *status, int flags)
  54 {
  55   return gdb::handle_eintr (-1, ::waitpid, pid, status, flags);
  56 }