/* Low level interface to ptrace, for GDB when running under Unix.
- Copyright (C) 1986-2016 Free Software Foundation, Inc.
+ Copyright (C) 1986-2017 Free Software Foundation, Inc.
This file is part of GDB.
};
/* Our own tty state, which we restore every time we need to deal with
- the terminal. This is only set once, when GDB first starts. The
- settings of flags which readline saves and restores and
+ the terminal. This is set once, when GDB first starts, and then
+ whenever we enter/leave TUI mode (gdb_save_tty_state). The
+ settings of flags which readline saves and restores are
unimportant. */
static struct terminal_info our_terminal_info;
-/* Snapshot of our own tty state taken during initialization of GDB.
- This is used as the initial tty state given to each new inferior. */
+/* Snapshot of the initial tty state taken during initialization of
+ GDB, before readline/ncurses have had a chance to change it. This
+ is used as the initial tty state given to each new spawned
+ inferior. Unlike our_terminal_info, this is only ever set
+ once. */
static serial_ttystate initial_gdb_ttystate;
static struct terminal_info *get_inflow_inferior_data (struct inferior *);
}
#endif
-enum gdb_has_a_terminal_flag_enum
- {
- yes, no, have_not_checked
- }
-gdb_has_a_terminal_flag = have_not_checked;
-
-/* Set the initial tty state that is to be inherited by new inferiors. */
+/* See terminal.h. */
void
set_initial_gdb_ttystate (void)
{
+ /* Note we can't do any of this in _initialize_inflow because at
+ that point stdin_serial has not been created yet. */
+
initial_gdb_ttystate = serial_get_tty_state (stdin_serial);
-}
-/* Does GDB have a terminal (on stdin)? */
-int
-gdb_has_a_terminal (void)
-{
- switch (gdb_has_a_terminal_flag)
+ if (initial_gdb_ttystate != NULL)
{
- case yes:
- return 1;
- case no:
- return 0;
- case have_not_checked:
- /* Get all the current tty settings (including whether we have a
- tty at all!). Can't do this in _initialize_inflow because
- serial_fdopen() won't work until the serial_ops_list is
- initialized. */
-
+ our_terminal_info.ttystate
+ = serial_copy_tty_state (stdin_serial, initial_gdb_ttystate);
#ifdef F_GETFL
our_terminal_info.tflags = fcntl (0, F_GETFL, 0);
#endif
-
- gdb_has_a_terminal_flag = no;
- if (stdin_serial != NULL)
- {
- our_terminal_info.ttystate = serial_get_tty_state (stdin_serial);
-
- if (our_terminal_info.ttystate != NULL)
- {
- gdb_has_a_terminal_flag = yes;
#ifdef PROCESS_GROUP_TYPE
- our_terminal_info.process_group = gdb_getpgrp ();
+ our_terminal_info.process_group = gdb_getpgrp ();
#endif
- }
- }
-
- return gdb_has_a_terminal_flag == yes;
- default:
- /* "Can't happen". */
- return 0;
}
}
+/* Does GDB have a terminal (on stdin)? */
+
+static int
+gdb_has_a_terminal (void)
+{
+ return initial_gdb_ttystate != NULL;
+}
+
/* Macro for printing errors from ioctl operations */
#define OOPSY(what) \