Split out tty and shared_info stuff into their own headers and use throughout.

Include sys/termios.h for files which need it.
* tty.h: New file.
* shared_info.h: New file.
* fhandler.h: Move inline methods that rely on tty stuff to
fhandler_console.cc.
* fhandler_tty.cc (fhandler_pty_master::process_slave_output): Set
output_done_event immediately after reading data to speed up tty output
processing.
(process_output): Set write_error to errno or zero.
(fhandler_tty_slave::write): Check previous write error prior to writing to
slave end of pipe.  This allows tty output to be slightly less synchronous.
* fhandler_console.cc (fhandler_console::tcsetpgrp): Moved here from
fhandler.h.
(fhandler_console::set_input_state): Ditto.

1 files changed, 143 insertions, 0 deletions

diff --git a/winsup/cygwin/tty.h b/winsup/cygwin/tty.h
new file mode 100644
index 000000000..f4fa67102
--- /dev/null
+++ b/winsup/cygwin/tty.h
@@ -0,0 +1,143 @@
+/* tty.h: shared info for cygwin
+
+   Copyright 2000 Cygnus Solutions.
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+
+/* tty tables */
+
+#define INP_BUFFER_SIZE 256
+#define OUT_BUFFER_SIZE 256
+#define NTTYS		128
+#define TTY_CONSOLE	0x40000000
+#define tty_attached(p)	((p)->ctty >= 0 && (p)->ctty != TTY_CONSOLE)
+
+/* Input/Output/ioctl events */
+
+#define OUTPUT_DONE_EVENT	"cygtty%d.output.done"
+#define IOCTL_REQUEST_EVENT	"cygtty%d.ioctl.request"
+#define IOCTL_DONE_EVENT	"cygtty%d.ioctl.done"
+#define RESTART_OUTPUT_EVENT	"cygtty%d.output.restart"
+#define OUTPUT_MUTEX		"cygtty%d.output.mutex"
+#define TTY_SLAVE_ALIVE		"cygtty%x.slave_alive"
+#define TTY_MASTER_ALIVE	"cygtty%x.master_alive"
+
+#include <sys/termios.h>
+
+enum
+{
+  TTY_INITIALIZED = 1,		/* Set if tty is initialized */
+  TTY_RSTCONS = 2		/* Set if console needs to be set to "non-cooked" */
+};
+
+#define TTYISSETF(x)	__ISSETF (tc, x, TTY)
+#define TTYSETF(x)	__SETF (tc, x, TTY)
+#define TTYCLEARF(x)	__CLEARF (tc, x, TTY)
+#define TTYCONDSETF(n, x) __CONDSETF(n, tc, x, TTY)
+
+#ifndef MIN_CTRL_C_SLOP
+#define MIN_CTRL_C_SLOP 50
+#endif
+
+class tty_min
+{
+  pid_t sid;	/* Session ID of tty */
+public:
+  DWORD status;
+  pid_t pgid;
+  int OutputStopped;
+  int ntty;
+  DWORD last_ctrl_c;	// tick count of last ctrl-c
+
+  tty_min (int t = -1, pid_t s = -1) : sid (s), ntty (t) {}
+  void setntty (int n) {ntty = n;}
+  pid_t getpgid () {return pgid;}
+  void setpgid (int pid) {pgid = pid;}
+  int getsid () {return sid;}
+  void setsid (pid_t tsid) {sid = tsid;}
+  struct termios ti;
+  struct winsize winsize;
+
+  /* ioctl requests buffer */
+  int cmd;
+  union
+  {
+    struct termios termios;
+    struct winsize winsize;
+    int value;
+    pid_t pid;
+  } arg;
+  /* XXX_retval variables holds master's completion codes. Error are stored as
+   * -ERRNO
+   */
+  int ioctl_retval;
+
+  int write_error;
+};
+
+class fhandler_pty_master;
+
+class tty: public tty_min
+{
+  HANDLE get_event (const char *fmt, BOOL inherit);
+public:
+  HWND  hwnd;	/* Console window handle tty belongs to */
+
+  DWORD master_pid;	/* Win32 PID of tty master process */
+
+  HANDLE from_master, to_slave;
+  HANDLE from_slave, to_master;
+
+  int read_retval;
+  BOOL was_opened;	/* True if opened at least once. */
+
+  void init ();
+  HANDLE create_inuse (const char *);
+  BOOL common_init (fhandler_pty_master *);
+  BOOL alive (const char *fmt);
+  BOOL slave_alive ();
+  BOOL master_alive ();
+  HWND gethwnd () {return hwnd;}
+  void sethwnd (HWND wnd) {hwnd = wnd;}
+  int make_pipes (fhandler_pty_master *ptym);
+  HANDLE open_output_mutex (BOOL inherit = FALSE)
+  {
+    char buf[80];
+    __small_sprintf (buf, OUTPUT_MUTEX, ntty);
+    return OpenMutex (MUTEX_ALL_ACCESS, inherit, buf);
+  }
+  BOOL exists ()
+  {
+    HANDLE h = open_output_mutex ();
+    if (h)
+      {
+	CloseHandle (h);
+	return 1;
+      }
+    return slave_alive ();
+  }
+};
+
+class tty_list
+{
+  tty ttys[NTTYS];
+
+public:
+  tty * operator [](int n) {return ttys + n;}
+  int allocate_tty (int n); /* n non zero if allocate a tty, pty otherwise */
+  int connect_tty (int);
+  void terminate ();
+  void init ();
+  tty_min *get_tty (int n);
+};
+
+void __stdcall tty_init ();
+void __stdcall tty_terminate ();
+int __stdcall attach_tty (int);
+void __stdcall create_tty_master (int);
+extern "C" int ttyslot (void);