along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+#ifndef SERIAL_H
+#define SERIAL_H
+
/* Terminal state pointer. This is specific to each type of interface. */
typedef PTR serial_ttystate;
int (*noflush_set_tty_state)
PARAMS ((serial_t, serial_ttystate, serial_ttystate));
int (*setbaudrate) PARAMS ((serial_t, int rate));
- int (*set_process_group) PARAMS ((serial_t, serial_ttystate, int));
};
/* Add a new serial interface to the interface list */
serial_t serial_open PARAMS ((const char *name));
-serial_t serial_fdopen PARAMS ((int fd));
+serial_t serial_fdopen PARAMS ((const int fd));
/* For most routines, if a failure is indicated, then errno should be
examined. */
((*((SERIAL_T)->ops->noflush_set_tty_state)) \
((SERIAL_T), (NEW_TTYSTATE), (OLD_TTYSTATE)))
-/* Read one char from the serial device with TIMEOUT seconds timeout.
- Returns char if ok, else one of the following codes. Note that all
- error codes are guaranteed to be < 0. */
+/* Read one char from the serial device with TIMEOUT seconds to wait
+ or -1 to wait forever. Use timeout of 0 to effect a poll. Returns
+ char if ok, else one of the following codes. Note that all error
+ codes are guaranteed to be < 0. */
#define SERIAL_ERROR -1 /* General error, see errno for details */
#define SERIAL_TIMEOUT -2
#define SERIAL_SETBAUDRATE(SERIAL_T, RATE) ((SERIAL_T)->ops->setbaudrate((SERIAL_T), RATE))
-/* Write LEN chars from STRING to the port SERIAL_T. Returns 0 for success,
- -1 for failure. */
+/* Write LEN chars from STRING to the port SERIAL_T. Returns 0 for
+ success, non-zero for failure. */
#define SERIAL_WRITE(SERIAL_T, STRING, LEN) ((SERIAL_T)->ops->write((SERIAL_T), STRING, LEN))
#define SERIAL_UN_FDOPEN(SERIAL_T) (free (SERIAL_T))
-/* Set the process group saved in TTYSTATE to GROUP. This just modifies
- the ttystate setting; need to call SERIAL_SET_TTY_STATE for this to
- actually have any effect. If no job control, then don't do anything. */
-#define SERIAL_SET_PROCESS_GROUP(SERIAL_T, TTYSTATE, GROUP) \
- ((*((SERIAL_T)->ops->set_process_group)) (SERIAL_T, TTYSTATE, GROUP))
-
-/* Do we have job control? Can be assumed to always be the same within
- a given run of GDB. In ser-unix.c, ser-go32.c, etc. */
-extern int job_control;
-
-/* Set the process group of the caller to its own pid, or do nothing if
- we lack job control. */
-extern int gdb_setpgid PARAMS ((void));
+#endif /* SERIAL_H */