306c4b6737
syncronize input on master tty with slave tty. * fhandler_tty.cc (fhandler_pty_master::accept_input): Use them to syncronize with slave. * fhandler_tty.cc (fhandler_tty_slave::read): Use input mutex and event to syncronize with master. Do not limit amount of data read from master to vmin value. Interrupt on signal and return already read data, if any. * fhandler_tty.cc (fhandler_tty_slave::open): Handle input mutex and event. * fhandler_tty.cc (fhandler_tty_common::close): Ditto. * fhandler_tty.cc (fhandler_tty_common::set_close_on_exec): Ditto. * fhandler_tty.cc (fhandler_tty_common::fixup_after_fork): Ditto. * fhandler_tty.cc (fhandler_tty_common::dup): Ditto. * tty.h (tty::open_input_mutex): New function. * tty.cc (tty::common_init): Create input mutex and event.
152 lines
3.6 KiB
C++
152 lines
3.6 KiB
C++
/* tty.h: shared tty info for cygwin
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Copyright 2000 Cygnus Solutions.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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/* tty tables */
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#define INP_BUFFER_SIZE 256
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#define OUT_BUFFER_SIZE 256
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#define NTTYS 128
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#define TTY_CONSOLE 0x40000000
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#define tty_attached(p) ((p)->ctty >= 0 && (p)->ctty != TTY_CONSOLE)
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/* Input/Output/ioctl events */
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#define OUTPUT_DONE_EVENT "cygtty%d.output.done"
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#define IOCTL_REQUEST_EVENT "cygtty%d.ioctl.request"
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#define IOCTL_DONE_EVENT "cygtty%d.ioctl.done"
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#define RESTART_OUTPUT_EVENT "cygtty%d.output.restart"
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#define INPUT_AVAILABLE_EVENT "cygtty%d.input.avail"
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#define OUTPUT_MUTEX "cygtty%d.output.mutex"
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#define INPUT_MUTEX "cygtty%d.input.mutex"
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#define TTY_SLAVE_ALIVE "cygtty%x.slave_alive"
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#define TTY_MASTER_ALIVE "cygtty%x.master_alive"
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#include <sys/termios.h>
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enum
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{
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TTY_INITIALIZED = 1, /* Set if tty is initialized */
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TTY_RSTCONS = 2 /* Set if console needs to be set to "non-cooked" */
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};
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#define TTYISSETF(x) __ISSETF (tc, x, TTY)
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#define TTYSETF(x) __SETF (tc, x, TTY)
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#define TTYCLEARF(x) __CLEARF (tc, x, TTY)
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#define TTYCONDSETF(n, x) __CONDSETF(n, tc, x, TTY)
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#ifndef MIN_CTRL_C_SLOP
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#define MIN_CTRL_C_SLOP 50
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#endif
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class tty_min
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{
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pid_t sid; /* Session ID of tty */
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public:
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DWORD status;
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pid_t pgid;
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int OutputStopped;
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int ntty;
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DWORD last_ctrl_c; // tick count of last ctrl-c
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tty_min (int t = -1, pid_t s = -1) : sid (s), ntty (t) {}
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void setntty (int n) {ntty = n;}
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pid_t getpgid () {return pgid;}
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void setpgid (int pid) {pgid = pid;}
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int getsid () {return sid;}
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void setsid (pid_t tsid) {sid = tsid;}
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struct termios ti;
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struct winsize winsize;
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/* ioctl requests buffer */
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int cmd;
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union
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{
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struct termios termios;
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struct winsize winsize;
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int value;
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pid_t pid;
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} arg;
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/* XXX_retval variables holds master's completion codes. Error are stored as
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* -ERRNO
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*/
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int ioctl_retval;
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int write_error;
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};
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class fhandler_pty_master;
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class tty: public tty_min
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{
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HANDLE get_event (const char *fmt, BOOL inherit);
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public:
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HWND hwnd; /* Console window handle tty belongs to */
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DWORD master_pid; /* Win32 PID of tty master process */
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HANDLE from_master, to_slave;
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HANDLE from_slave, to_master;
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int read_retval;
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BOOL was_opened; /* True if opened at least once. */
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void init ();
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HANDLE create_inuse (const char *);
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BOOL common_init (fhandler_pty_master *);
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BOOL alive (const char *fmt);
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BOOL slave_alive ();
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BOOL master_alive ();
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HWND gethwnd () {return hwnd;}
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void sethwnd (HWND wnd) {hwnd = wnd;}
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int make_pipes (fhandler_pty_master *ptym);
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HANDLE open_output_mutex (BOOL inherit = FALSE)
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{
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char buf[80];
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__small_sprintf (buf, OUTPUT_MUTEX, ntty);
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return OpenMutex (MUTEX_ALL_ACCESS, inherit, buf);
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}
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HANDLE open_input_mutex (BOOL inherit = FALSE)
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{
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char buf[80];
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__small_sprintf (buf, INPUT_MUTEX, ntty);
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return OpenMutex (MUTEX_ALL_ACCESS, inherit, buf);
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}
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BOOL exists ()
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{
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HANDLE h = open_output_mutex ();
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if (h)
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{
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CloseHandle (h);
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return 1;
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}
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return slave_alive ();
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}
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};
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class tty_list
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{
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tty ttys[NTTYS];
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public:
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tty * operator [](int n) {return ttys + n;}
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int allocate_tty (int n); /* n non zero if allocate a tty, pty otherwise */
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int connect_tty (int);
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void terminate ();
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void init ();
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tty_min *get_tty (int n);
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};
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void __stdcall tty_init ();
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void __stdcall tty_terminate ();
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int __stdcall attach_tty (int);
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void __stdcall create_tty_master (int);
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extern "C" int ttyslot (void);
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