#include "command.h"
#include "signals.h"
#include "serial.h"
+#include "terminal.h"
#include "target.h"
-#ifdef USG
-#include <sys/types.h>
+#include <signal.h>
+#include <fcntl.h>
+
+#if !defined (HAVE_TERMIOS) && !defined (HAVE_TERMIO) && !defined (HAVE_SGTTY) && !defined (__GO32__)
+#define HAVE_SGTTY
#endif
-/* Some USG-esque systems (some of which are BSD-esque enough so that USG
- is not defined) want this header, and it won't do any harm. */
-#include <fcntl.h>
+#if defined (HAVE_TERMIOS)
+#include <termios.h>
+#include <unistd.h>
+#endif
-#include <sys/param.h>
-#include <signal.h>
+#ifdef HAVE_TERMIOS
+#define PROCESS_GROUP_TYPE pid_t
+#endif
+
+#ifdef HAVE_SGTTY
+#ifdef SHORT_PGRP
+/* This is only used for the ultra. Does it have pid_t? */
+#define PROCESS_GROUP_TYPE short
+#else
+#define PROCESS_GROUP_TYPE int
+#endif
+#endif /* sgtty */
static void
kill_command PARAMS ((char *, int));
static int tflags_inferior;
static int tflags_ours;
+#ifdef PROCESS_GROUP_TYPE
+/* Process group for us and the inferior. Saved and restored just like
+ {our,inferior}_ttystate. */
+PROCESS_GROUP_TYPE our_process_group;
+PROCESS_GROUP_TYPE inferior_process_group;
+#endif
+
/* While the inferior is running, we want SIGINT and SIGQUIT to go to the
inferior only. If we have job control, that takes care of it. If not,
we save our handlers in these two variables and set SIGINT and SIGQUIT
if (stdin_serial != NULL)
{
our_ttystate = SERIAL_GET_TTY_STATE (stdin_serial);
+
if (our_ttystate != NULL)
- gdb_has_a_terminal_flag = yes;
+ {
+ gdb_has_a_terminal_flag = yes;
+#ifdef HAVE_TERMIOS
+ our_process_group = tcgetpgrp (0);
+#endif
+#ifdef HAVE_SGTTY
+ ioctl (0, TIOCGPGRP, &our_process_group);
+#endif
+ }
}
return gdb_has_a_terminal_flag == yes;
if (inferior_ttystate)
free (inferior_ttystate);
inferior_ttystate = SERIAL_GET_TTY_STATE (stdin_serial);
- SERIAL_SET_PROCESS_GROUP (stdin_serial, inferior_ttystate, inferior_pid);
+#ifdef PROCESS_GROUP_TYPE
+ inferior_process_group = inferior_pid;
+#endif
/* Make sure that next time we call terminal_inferior (which will be
before the program runs, as it needs to be), we install the new
terminal_ours, we will not change in our out of raw mode with
this call, so we don't flush any input. */
result = SERIAL_SET_TTY_STATE (stdin_serial, inferior_ttystate);
+ OOPSY ("setting tty state");
+
+ if (!job_control)
+ {
+ sigint_ours = (void (*) ()) signal (SIGINT, SIG_IGN);
+ sigquit_ours = (void (*) ()) signal (SIGQUIT, SIG_IGN);
+ }
/* If attach_flag is set, we don't know whether we are sharing a
terminal with the inferior or not. (attaching a process
`sharing' in the sense that we need to save and restore tty
state)). I don't know if there is any way to tell whether we
are sharing a terminal. So what we do is to go through all
- the saving and restoring of terminal state, but ignore errors
- (which will occur, in tcsetpgrp, if we are not sharing a
- terminal). */
-
- if (!attach_flag)
- OOPSY ("setting tty state");
+ the saving and restoring of the tty state, but ignore errors
+ setting the process group, which will happen if we are not
+ sharing a terminal). */
- if (!job_control)
+ if (job_control)
{
- sigint_ours = (void (*) ()) signal (SIGINT, SIG_IGN);
- sigquit_ours = (void (*) ()) signal (SIGQUIT, SIG_IGN);
+#ifdef HAVE_TERMIOS
+ result = tcsetpgrp (0, inferior_process_group);
+ if (!attach_flag)
+ OOPSY ("tcsetpgrp");
+#endif
+
+#ifdef HAVE_SGTTY
+ result = ioctl (0, TIOCSPGRP, &inferior_process_group);
+ if (!attach_flag)
+ OOPSY ("TIOCSPGRP");
+#endif
}
+
}
terminal_is_ours = 0;
}
if (inferior_ttystate)
free (inferior_ttystate);
inferior_ttystate = SERIAL_GET_TTY_STATE (stdin_serial);
+#ifdef HAVE_TERMIOS
+ inferior_process_group = tcgetpgrp (0);
+#endif
+#ifdef HAVE_SGTTY
+ ioctl (0, TIOCGPGRP, &inferior_process_group);
+#endif
/* Here we used to set ICANON in our ttystate, but I believe this
was an artifact from before when we used readline. Readline sets
SERIAL_NOFLUSH_SET_TTY_STATE (stdin_serial, our_ttystate,
inferior_ttystate);
+ if (job_control)
+ {
+#ifdef HAVE_TERMIOS
+ result = tcsetpgrp (0, our_process_group);
+#if 0
+ /* This fails on Ultrix with EINVAL if you run the testsuite
+ in the background with nohup, and then log out. GDB never
+ used to check for an error here, so perhaps there are other
+ such situations as well. */
+ if (result == -1)
+ fprintf (stderr, "[tcsetpgrp failed in terminal_ours: %s]\n",
+ strerror (errno));
+#endif
+#endif /* termios */
+
+#ifdef HAVE_SGTTY
+ result = ioctl (0, TIOCSPGRP, &our_process_group);
+#endif
+ }
+
#ifdef SIGTTOU
if (job_control)
signal (SIGTTOU, osigttou);
printf_filtered ("\n");
}
+#ifdef PROCESS_GROUP_TYPE
+ printf_filtered ("Process group = %d\n", inferior_process_group);
+#endif
+
SERIAL_PRINT_TTY_STATE (stdin_serial, inferior_ttystate);
}
\f
{
inferior_pid = 0;
attach_flag = 0;
- mark_breakpoints_out ();
+ breakpoint_init_inferior ();
registers_changed ();
#ifdef CLEAR_DEFERRED_STORES
#endif
reopen_exec_file ();
- flush_cached_frames ();
- if (target_has_stack) {
- set_current_frame ( create_new_frame (read_register (FP_REGNUM),
- read_pc ()));
- select_frame (get_current_frame (), 0);
- } else {
- set_current_frame (0);
- select_frame ((FRAME) 0, -1);
- }
+ reinit_frame_cache ();
+
/* It is confusing to the user for ignore counts to stick around
from previous runs of the inferior. So clear them. */
breakpoint_clear_ignore_counts ();
signal (SIGINT, osig);
}
\f
+
+int job_control;
+
+/* This is here because this is where we figure out whether we (probably)
+ have job control. Just using job_control only does part of it because
+ setpgid or setpgrp might not exist on a system without job control.
+ It might be considered misplaced (on the other hand, process groups and
+ job control are closely related to ttys).
+
+ For a more clean implementation, in libiberty, put a setpgid which merely
+ calls setpgrp and a setpgrp which does nothing (any system with job control
+ will have one or the other). */
+int
+gdb_setpgid ()
+{
+ int retval = 0;
+ if (job_control)
+ {
+#if defined (NEED_POSIX_SETPGID) || defined (HAVE_TERMIOS)
+ /* Do all systems with termios have setpgid? I hope so. */
+ /* setpgid (0, 0) is supposed to work and mean the same thing as
+ this, but on Ultrix 4.2A it fails with EPERM (and
+ setpgid (getpid (), getpid ()) succeeds). */
+ retval = setpgid (getpid (), getpid ());
+#else
+#if defined (TIOCGPGRP)
+#if defined(USG) && !defined(SETPGRP_ARGS)
+ retval = setpgrp ();
+#else
+ retval = setpgrp (getpid (), getpid ());
+#endif /* USG */
+#endif /* TIOCGPGRP. */
+#endif /* NEED_POSIX_SETPGID */
+ }
+ return retval;
+}
+
void
_initialize_inflow ()
{
inferior_pid = 0;
terminal_is_ours = 1;
+
+ /* OK, figure out whether we have job control. If neither termios nor
+ sgtty (i.e. termio or go32), leave job_control 0. */
+
+#if defined (HAVE_TERMIOS)
+ /* Do all systems with termios have the POSIX way of identifying job
+ control? I hope so. */
+#ifdef _POSIX_JOB_CONTROL
+ job_control = 1;
+#else
+ job_control = sysconf (_SC_JOB_CONTROL);
+#endif
+#endif /* termios */
+
+#ifdef HAVE_SGTTY
+#ifdef TIOCGPGRP
+ job_control = 1;
+#else
+ job_control = 0;
+#endif /* TIOCGPGRP */
+#endif /* sgtty */
}
projects / binutils-gdb.git / blobdiff