1 ////////////////////////////////////////////////////////////////////////
2 //
3 // Copyright (C) 2016-2021 The Octave Project Developers
4 //
5 // See the file COPYRIGHT.md in the top-level directory of this
6 // distribution or <https://octave.org/copyright/>.
7 //
8 // This file is part of Octave.
9 //
10 // Octave is free software: you can redistribute it and/or modify it
11 // under the terms of the GNU General Public License as published by
12 // the Free Software Foundation, either version 3 of the License, or
13 // (at your option) any later version.
14 //
15 // Octave is distributed in the hope that it will be useful, but
16 // WITHOUT ANY WARRANTY; without even the implied warranty of
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 // GNU General Public License for more details.
19 //
20 // You should have received a copy of the GNU General Public License
21 // along with Octave; see the file COPYING. If not, see
22 // <https://www.gnu.org/licenses/>.
23 //
24 ////////////////////////////////////////////////////////////////////////
25
26 // These functions may be provided by gnulib. We don't include gnulib
27 // headers directly in Octave's C++ source files to avoid problems that
28 // may be caused by the way that gnulib overrides standard library
29 // functions.
30
31 #if defined (HAVE_CONFIG_H)
32 # include "config.h"
33 #endif
34
35 #include <sys/types.h>
36 #include <sys/wait.h>
37
38 #include "wait-wrappers.h"
39
40 #if ! defined (WCONTINUE)
41 # define WCONTINUE 0
42 #endif
43
44 #if ! defined (WNOHANG)
45 # define WNOHANG 0
46 #endif
47
48 #if ! defined (WUNTRACED)
49 # define WUNTRACED 0
50 #endif
51
52 #if ! defined (WIFCONTINUED)
53 # define WIFCONTINUED(x) false
54 #endif
55
56 pid_t
octave_waitpid_wrapper(pid_t pid,int * statusp,int options)57 octave_waitpid_wrapper (pid_t pid, int *statusp, int options)
58 {
59 #if defined (__WIN32__) && ! defined (__CYGWIN__)
60
61 octave_unused_parameter (pid);
62 octave_unused_parameter (options);
63
64 // gnulib's waitpid replacement currently uses _cwait, which
65 // apparently only works with console applications.
66 *statusp = 0;
67 return -1;
68 #else
69 return waitpid (pid, statusp, options);
70 #endif
71 }
72
73 int
octave_wcontinue_wrapper(void)74 octave_wcontinue_wrapper (void)
75 {
76 return WCONTINUE;
77 }
78
79 int
octave_wnohang_wrapper(void)80 octave_wnohang_wrapper (void)
81 {
82 return WNOHANG;
83 }
84
85 int
octave_wuntraced_wrapper(void)86 octave_wuntraced_wrapper (void)
87 {
88 return WUNTRACED;
89 }
90
91 #if defined (HAVE_PRAGMA_GCC_DIAGNOSTIC)
92 // Disable the unused parameter warning for the following wrapper functions.
93 // The <sys/wait.h> header provided by gnulib may define some of the W*
94 // macros to expand to a constant and ignore the parameter.
95 #pragma GCC diagnostic push
96 #pragma GCC diagnostic ignored "-Wunused-parameter"
97 #endif
98
99 int
octave_wcoredump_wrapper(int status)100 octave_wcoredump_wrapper (int status)
101 {
102 return WCOREDUMP (status);
103 }
104
105 int
octave_wexitstatus_wrapper(int status)106 octave_wexitstatus_wrapper (int status)
107 {
108 return WEXITSTATUS (status);
109 }
110
111 bool
octave_wifcontinued_wrapper(int status)112 octave_wifcontinued_wrapper (int status)
113 {
114 return WIFCONTINUED (status);
115 }
116
117 bool
octave_wifexited_wrapper(int status)118 octave_wifexited_wrapper (int status)
119 {
120 return WIFEXITED (status);
121 }
122
123 bool
octave_wifsignaled_wrapper(int status)124 octave_wifsignaled_wrapper (int status)
125 {
126 return WIFSIGNALED (status);
127 }
128
129 bool
octave_wifstopped_wrapper(int status)130 octave_wifstopped_wrapper (int status)
131 {
132 return WIFSTOPPED (status);
133 }
134
135 int
octave_wstopsig_wrapper(int status)136 octave_wstopsig_wrapper (int status)
137 {
138 return WSTOPSIG (status);
139 }
140
141 int
octave_wtermsig_wrapper(int status)142 octave_wtermsig_wrapper (int status)
143 {
144 return WTERMSIG (status);
145 }
146
147 #if defined (HAVE_PRAGMA_GCC_DIAGNOSTIC)
148 // Restore prevailing warning state for remainder of the file.
149 #pragma GCC diagnostic pop
150 #endif
151