/* Interfaces to system-dependent kernel and library entries.
- Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001,
- 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+ Copyright (C) 1985-1988, 1993-1995, 1999-2011
Free Software Foundation, Inc.
This file is part of GNU Emacs.
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif /* HAVE_LIMITS_H */
-#ifdef HAVE_UNISTD_H
#include <unistd.h>
-#endif
+
+#include <ignore-value.h>
#include "lisp.h"
#include "sysselect.h"
#endif
#include <sys/file.h>
-
-#ifdef HAVE_FCNTL_H
#include <fcntl.h>
-#endif
#include "systty.h"
#include "syswait.h"
#include "dispextern.h"
#include "process.h"
#include "cm.h" /* for reset_sys_modes */
-#ifdef HAVE_TERM_H
-/* Include this last. If it is ncurses header file, it adds a lot of
- defines that interfere with stuff in other headers. Someone responsible
- for ncurses messed up bigtime. See bug#6812. */
-#include <term.h>
-#endif
#ifdef WINDOWSNT
#include <direct.h>
#endif
#endif
-/* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
-#ifndef LPASS8
-#define LPASS8 0
-#endif
+/* Declare here, including term.h is problematic on some systems. */
+extern void tputs (const char *, int, int (*)(int));
static const int baud_convert[] =
{
1800, 2400, 4800, 9600, 19200, 38400
};
-int emacs_ospeed;
-
void croak (char *) NO_RETURN;
/* Temporary used by `sigblock' when defined in terms of signprocmask. */
{
if (tty->input) /* Is the device suspended? */
{
- EMACS_GET_TTY (fileno (tty->input), &buf);
- EMACS_SET_TTY (fileno (tty->input), &buf, 0);
+ emacs_get_tty (fileno (tty->input), &buf);
+ emacs_set_tty (fileno (tty->input), &buf, 0);
}
}
}
void
init_baud_rate (int fd)
{
+ int emacs_ospeed;
+
if (noninteractive)
emacs_ospeed = 0;
else
baud_rate = 1200;
}
-\f
-/*ARGSUSED*/
-void
-set_exclusive_use (int fd)
-{
-#ifdef FIOCLEX
- ioctl (fd, FIOCLEX, 0);
-#endif
- /* Ok to do nothing if this feature does not exist */
-}
\f
int wait_debugging; /* Set nonzero to make following function work under dbx
void
flush_pending_output (int channel)
{
-#ifndef DOS_NT
- /* If we try this, we get hit with SIGTTIN, because
- the child's tty belongs to the child's pgrp. */
-#else
-#ifdef TCFLSH
- ioctl (channel, TCFLSH, 1);
-#else
-#ifdef TIOCFLUSH
- int zero = 0;
- /* 3rd arg should be ignored
- but some 4.2 kernels actually want the address of an int
- and nonzero means something different. */
- ioctl (channel, TIOCFLUSH, &zero);
-#endif
-#endif
-#endif
+ /* FIXME: maybe this function should be removed */
}
\f
/* Set up the terminal at the other end of a pseudo-terminal that
#ifndef WINDOWSNT
struct emacs_tty s;
- EMACS_GET_TTY (out, &s);
+ emacs_get_tty (out, &s);
s.main.c_oflag |= OPOST; /* Enable output postprocessing */
s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */
#ifdef NLDLY
s.main.c_cc[VTIME] = 0;
#endif
- EMACS_SET_TTY (out, &s, 0);
+ emacs_set_tty (out, &s, 0);
#endif /* not WINDOWSNT */
}
-#endif /* MSDOS */
+#endif /* not MSDOS */
\f
/* Record a signal code and the handler for it. */
close_process_descs (); /* Close Emacs's pipes/ptys */
-#ifdef SET_EMACS_PRIORITY
- {
- extern EMACS_INT emacs_priority;
-
- if (emacs_priority < 0)
- nice (-emacs_priority);
- }
-#endif
-
#ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
{
char *epwd = getenv ("PWD");
write (1, "Can't execute subshell", 22);
#else /* not WINDOWSNT */
execlp (sh, sh, (char *) 0);
- write (1, "Can't execute subshell", 22);
+ ignore_value (write (1, "Can't execute subshell", 22));
_exit (1);
#endif /* not WINDOWSNT */
#endif /* not MSDOS */
if (! tty_out->old_tty)
tty_out->old_tty = (struct emacs_tty *) xmalloc (sizeof (struct emacs_tty));
- EMACS_GET_TTY (fileno (tty_out->input), tty_out->old_tty);
+ emacs_get_tty (fileno (tty_out->input), tty_out->old_tty);
tty = *tty_out->old_tty;
dos_ttraw (tty_out);
#endif
- EMACS_SET_TTY (fileno (tty_out->input), &tty, 0);
+ emacs_set_tty (fileno (tty_out->input), &tty, 0);
/* This code added to insure that, if flow-control is not to be used,
we have an unlocked terminal at the start. */
{
struct emacs_tty etty;
- EMACS_GET_TTY (fd, &etty);
- return EMACS_TTY_TABS_OK (&etty);
+ emacs_get_tty (fd, &etty);
+#ifndef DOS_NT
+#ifdef TABDLY
+ return ((etty.main.c_oflag & TABDLY) != TAB3);
+#else /* not TABDLY */
+ return 1;
+#endif /* not TABDLY */
+#else /* DOS_NT */
+ return 0;
+#endif /* DOS_NT */
}
\f
/* Get terminal size from system.
#endif /* F_SETFL */
if (tty_out->old_tty)
- while (EMACS_SET_TTY (fileno (tty_out->input),
+ while (emacs_set_tty (fileno (tty_out->input),
tty_out->old_tty, 0) < 0 && errno == EINTR)
;
}
#endif /* HAVE_PTYS */
\f
-/* init_system_name sets up the string for the Lisp function
- system-name to return. */
-
-extern Lisp_Object Vsystem_name;
-
#ifdef HAVE_SOCKETS
#include <sys/socket.h>
#include <netdb.h>
}
}
\f
-#ifndef MSDOS
-#if !defined (HAVE_SELECT)
-
-#include "sysselect.h"
-#undef select
-
-#if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
-/* Cause explanatory error message at compile time,
- since the select emulation is not good enough for X. */
-int *x = &x_windows_lose_if_no_select_system_call;
-#endif
-
-/* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
- * Only checks read descriptors.
- */
-/* How long to wait between checking fds in select */
-#define SELECT_PAUSE 1
-int select_alarmed;
-
-/* For longjmp'ing back to read_input_waiting. */
-
-jmp_buf read_alarm_throw;
-
-/* Nonzero if the alarm signal should throw back to read_input_waiting.
- The read_socket_hook function sets this to 1 while it is waiting. */
-
-int read_alarm_should_throw;
-
-void
-select_alarm (int ignore)
-{
- select_alarmed = 1;
- signal (SIGALRM, SIG_IGN);
- SIGNAL_THREAD_CHECK (SIGALRM);
- if (read_alarm_should_throw)
- longjmp (read_alarm_throw, 1);
-}
-
-#ifndef WINDOWSNT
-/* Only rfds are checked. */
-int
-sys_select (int nfds,
- SELECT_TYPE *rfds, SELECT_TYPE *wfds, SELECT_TYPE *efds,
- EMACS_TIME *timeout)
-{
- /* XXX This needs to be updated for multi-tty support. Is there
- anybody who needs to emulate select these days? */
- int ravail = 0;
- SELECT_TYPE orfds;
- int timeoutval;
- int *local_timeout;
- extern int proc_buffered_char[];
- extern int process_tick, update_tick;
- unsigned char buf;
-
-#if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
- /* If we're using X, then the native select will work; we only need the
- emulation for non-X usage. */
- if (!NILP (Vinitial_window_system))
- return select (nfds, rfds, wfds, efds, timeout);
-#endif
- timeoutval = timeout ? EMACS_SECS (*timeout) : 100000;
- local_timeout = &timeoutval;
- FD_ZERO (&orfds);
- if (rfds)
- {
- orfds = *rfds;
- FD_ZERO (rfds);
- }
- if (wfds)
- FD_ZERO (wfds);
- if (efds)
- FD_ZERO (efds);
-
- /* If we are looking only for the terminal, with no timeout,
- just read it and wait -- that's more efficient. */
- if (*local_timeout == 100000 && process_tick == update_tick
- && FD_ISSET (0, &orfds))
- {
- int fd;
- for (fd = 1; fd < nfds; ++fd)
- if (FD_ISSET (fd, &orfds))
- goto hardway;
- if (! detect_input_pending ())
- read_input_waiting ();
- FD_SET (0, rfds);
- return 1;
- }
-
- hardway:
- /* Once a second, till the timer expires, check all the flagged read
- * descriptors to see if any input is available. If there is some then
- * set the corresponding bit in the return copy of rfds.
- */
- while (1)
- {
- register int to_check, fd;
-
- if (rfds)
- {
- for (to_check = nfds, fd = 0; --to_check >= 0; fd++)
- {
- if (FD_ISSET (fd, &orfds))
- {
- int avail = 0, status = 0;
-
- if (fd == 0)
- avail = detect_input_pending (); /* Special keyboard handler */
- else
- {
-#ifdef FIONREAD
- status = ioctl (fd, FIONREAD, &avail);
-#else /* no FIONREAD */
- /* Hoping it will return -1 if nothing available
- or 0 if all 0 chars requested are read. */
- if (proc_buffered_char[fd] >= 0)
- avail = 1;
- else
- {
- avail = read (fd, &buf, 1);
- if (avail > 0)
- proc_buffered_char[fd] = buf;
- }
-#endif /* no FIONREAD */
- }
- if (status >= 0 && avail > 0)
- {
- FD_SET (fd, rfds);
- ravail++;
- }
- }
- }
- }
- if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick)
- break;
-
- turn_on_atimers (0);
- signal (SIGALRM, select_alarm);
- select_alarmed = 0;
- alarm (SELECT_PAUSE);
-
- /* Wait for a SIGALRM (or maybe a SIGTINT) */
- while (select_alarmed == 0 && *local_timeout != 0
- && process_tick == update_tick)
- {
- /* If we are interested in terminal input,
- wait by reading the terminal.
- That makes instant wakeup for terminal input at least. */
- if (FD_ISSET (0, &orfds))
- {
- read_input_waiting ();
- if (detect_input_pending ())
- select_alarmed = 1;
- }
- else
- pause ();
- }
- (*local_timeout) -= SELECT_PAUSE;
-
- /* Reset the old alarm if there was one. */
- turn_on_atimers (1);
-
- if (*local_timeout == 0) /* Stop on timer being cleared */
- break;
- }
- return ravail;
-}
-#endif /* not WINDOWSNT */
-
-/* Read keyboard input into the standard buffer,
- waiting for at least one character. */
-
-void
-read_input_waiting (void)
-{
- /* XXX This needs to be updated for multi-tty support. Is there
- anybody who needs to emulate select these days? */
- int nread, i;
-
- if (read_socket_hook)
- {
- struct input_event hold_quit;
-
- EVENT_INIT (hold_quit);
- hold_quit.kind = NO_EVENT;
-
- read_alarm_should_throw = 0;
- if (! setjmp (read_alarm_throw))
- nread = (*read_socket_hook) (0, 1, &hold_quit);
- else
- nread = -1;
-
- if (hold_quit.kind != NO_EVENT)
- kbd_buffer_store_event (&hold_quit);
- }
- else
- {
- struct input_event e;
- char buf[3];
- nread = read (fileno (stdin), buf, 1);
- EVENT_INIT (e);
-
- /* Scan the chars for C-g and store them in kbd_buffer. */
- e.kind = ASCII_KEYSTROKE_EVENT;
- e.frame_or_window = selected_frame;
- e.modifiers = 0;
- for (i = 0; i < nread; i++)
- {
- /* Convert chars > 0177 to meta events if desired.
- We do this under the same conditions that read_avail_input does. */
- if (read_socket_hook == 0)
- {
- /* If the user says she has a meta key, then believe her. */
- if (meta_key == 1 && (buf[i] & 0x80))
- e.modifiers = meta_modifier;
- if (meta_key != 2)
- buf[i] &= ~0x80;
- }
-
- XSETINT (e.code, buf[i]);
- kbd_buffer_store_event (&e);
- /* Don't look at input that follows a C-g too closely.
- This reduces lossage due to autorepeat on C-g. */
- if (buf[i] == quit_char)
- break;
- }
- }
-}
-
-#if !defined (HAVE_SELECT)
-#define select sys_select
-#endif
-
-#endif /* not HAVE_SELECT */
-#endif /* not MSDOS */
-\f
/* POSIX signals support - DJB */
/* Anyone with POSIX signals should have ANSI C declarations */
#ifndef HAVE_GETTIMEOFDAY
#ifdef HAVE_TIMEVAL
-/* ARGSUSED */
int
gettimeofday (struct timeval *tp, struct timezone *tzp)
{
}
#endif /* !defined (WINDOWSNT) */
-
-
-/* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf
- (do not change this comment) */