1 /* Provide a non-threads replacement for the POSIX raise function.
2 
3    Copyright (C) 2002-2003, 2005-2006, 2009-2020 Free Software Foundation, Inc.
4 
5    This program is free software: you can redistribute it and/or modify
6    it under the terms of the GNU General Public License as published by
7    the Free Software Foundation; either version 3 of the License, or
8    (at your option) any later version.
9 
10    This program is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13    GNU General Public License for more details.
14 
15    You should have received a copy of the GNU General Public License
16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
17 
18 /* written by Jim Meyering and Bruno Haible */
19 
20 #include <config.h>
21 
22 /* Specification.  */
23 #include <signal.h>
24 
25 #if HAVE_RAISE
26 /* Native Windows platform.  */
27 
28 # include <errno.h>
29 
30 # if HAVE_MSVC_INVALID_PARAMETER_HANDLER
31 #  include "msvc-inval.h"
32 # endif
33 
34 # if HAVE_MSVC_INVALID_PARAMETER_HANDLER
35 /* Forward declaration.  */
36 static int raise_nothrow (int sig);
37 # else
38 #  define raise_nothrow raise
39 # endif
40 
41 #else
42 /* An old Unix platform.  */
43 
44 # include <unistd.h>
45 
46 #endif
47 
48 int
raise(int sig)49 raise (int sig)
50 #undef raise
51 {
52 #if GNULIB_defined_signal_blocking && GNULIB_defined_SIGPIPE
53   if (sig == SIGPIPE)
54     return _gl_raise_SIGPIPE ();
55 #endif
56 
57 #if HAVE_RAISE
58   return raise_nothrow (sig);
59 #else
60   return kill (getpid (), sig);
61 #endif
62 }
63 
64 #if HAVE_RAISE && HAVE_MSVC_INVALID_PARAMETER_HANDLER
65 static int
raise_nothrow(int sig)66 raise_nothrow (int sig)
67 {
68   int result;
69 
70   TRY_MSVC_INVAL
71     {
72       result = raise (sig);
73     }
74   CATCH_MSVC_INVAL
75     {
76       result = -1;
77       errno = EINVAL;
78     }
79   DONE_MSVC_INVAL;
80 
81   return result;
82 }
83 #endif
84