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posix-hdep.c
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1/* Host support routines for MinGW, for GDB, the GNU debugger.
2
3 Copyright (C) 2006-2023 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 "defs.h"
21#include "gdbsupport/event-loop.h"
22#include "gdbsupport/gdb_select.h"
23#include "inferior.h"
24#include <signal.h>
25
26/* Wrapper for select. Nothing special needed on POSIX platforms. */
27
28int
29gdb_select (int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
30 struct timeval *timeout)
31{
32 return select (n, readfds, writefds, exceptfds, timeout);
33}
34
35/* Host-dependent console fputs method. POSIX platforms always return
36 zero, to use the default C 'fputs'. */
37int
38gdb_console_fputs (const char *buf, FILE *f)
39{
40 return 0;
41}
42
43/* See inferior.h. */
44
45tribool
47{
48 /* Using host-dependent code here is fine, because the
49 child_terminal_foo functions are meant to be used by child/native
50 targets. */
51#if defined (__linux__) || defined (__sun__)
52 char buf[100];
53
54 xsnprintf (buf, sizeof (buf), "/proc/%d/fd/0", pid);
55 return is_gdb_terminal (buf);
56#else
57 return TRIBOOL_UNKNOWN;
58#endif
59}
60
61/* Current C-c handler. */
63
64/* A wrapper that reinstalls the current signal handler. */
65static void
67{
68 signal (num, handler_wrapper);
69 if (current_handler != SIG_IGN)
70 current_handler (num);
71}
72
73/* See inferior.h. */
74
77{
78 signal (SIGINT, handler_wrapper);
80 current_handler = fn;
81 return result;
82}
void f()
Definition 1.cc:36
mach_port_t mach_port_t name mach_port_t mach_port_t name kern_return_t int int rusage_t pid_t pid
Definition gnu-nat.c:1791
tribool is_gdb_terminal(const char *tty)
Definition inflow.c:218
void c_c_handler_ftype(int)
Definition inferior.h:183
int gdb_select(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout)
Definition posix-hdep.c:29
int gdb_console_fputs(const char *buf, FILE *f)
Definition posix-hdep.c:38
static c_c_handler_ftype * current_handler
Definition posix-hdep.c:62
static void handler_wrapper(int num)
Definition posix-hdep.c:66
c_c_handler_ftype * install_sigint_handler(c_c_handler_ftype *fn)
Definition posix-hdep.c:76
tribool sharing_input_terminal(int pid)
Definition posix-hdep.c:46