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authorJason Molenda <jmolenda@apple.com>1999-10-05 23:13:56 +0000
committerJason Molenda <jmolenda@apple.com>1999-10-05 23:13:56 +0000
commit2acceee2182a942e6a79a972009540990f4dfabf (patch)
tree2ed7ca473f0b49181f1d0214c3450a7eb17f7bcb /gdb/serial.h
parent3e9c42873ee1d0bbb03039baea78c617174f9269 (diff)
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import gdb-1999-10-04 snapshot
Diffstat (limited to 'gdb/serial.h')
-rw-r--r--gdb/serial.h44
1 files changed, 32 insertions, 12 deletions
diff --git a/gdb/serial.h b/gdb/serial.h
index e3a1bf2..11554d7 100644
--- a/gdb/serial.h
+++ b/gdb/serial.h
@@ -55,12 +55,17 @@ extern void serial_un_fdopen (serial_t scb);
/* 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_EOF -3
+ unsigned char if ok, else one of the following codes. Note that
+ all error return-codes are guaranteed to be < 0. */
+
+enum serial_rc {
+ SERIAL_ERROR = -1, /* General error. */
+ SERIAL_TIMEOUT = -2, /* Timeout during read. ui_loop_hook() can,
+ unfortunatly, force this to be returned. */
+ SERIAL_EOF = -3 /* General end-of-file or remote target
+ connection closed, indication. Includes
+ things like the line dropping dead. */
+};
extern int serial_readchar (serial_t scb, int timeout);
#define SERIAL_READCHAR(SERIAL_T, TIMEOUT) serial_readchar ((SERIAL_T), (TIMEOUT))
@@ -165,7 +170,7 @@ extern int serial_is_async_p (serial_t scb);
asynchronous mode. To disable asynchronous mode, register a NULL
callback. */
-typedef void (serial_event_ftype) (int error, void *context, int fd);
+typedef void (serial_event_ftype) (serial_t scb, void *context);
extern void serial_async (serial_t scb, serial_event_ftype *handler, void *context);
#define SERIAL_ASYNC(SERIAL_T, HANDLER, CONTEXT) serial_async ((SERIAL_T), (HANDLER), (CONTEXT))
@@ -177,6 +182,17 @@ extern void serial_async (serial_t scb, serial_event_ftype *handler, void *conte
extern int deprecated_serial_fd (serial_t scb);
#define DEPRECATED_SERIAL_FD(SERIAL_T) deprecated_serial_fd ((SERIAL_T))
+/* Trace/debug mechanism.
+
+ SERIAL_DEBUG() enables/disables internal debugging.
+ SERIAL_DEBUG_P() indicates the current debug state. */
+
+extern void serial_debug (serial_t scb, int debug_p);
+#define SERIAL_DEBUG(SERIAL_T, DEBUG_P) serial_debug ((SERIAL_T), (DEBUG_P))
+
+extern int serial_debug_p (serial_t scb);
+#define SERIAL_DEBUG_P(SERIAL_T) serial_debug_p ((SERIAL_T))
+
/* Details of an instance of a serial object */
@@ -186,16 +202,20 @@ struct _serial_t
struct serial_ops *ops; /* Function vector */
void *state; /* Local context info for open FD */
serial_ttystate ttystate; /* Not used (yet) */
- int bufcnt; /* Amount of data in receive buffer */
+ int bufcnt; /* Amount of data remaining in receive
+ buffer. -ve for sticky errors. */
unsigned char *bufp; /* Current byte */
unsigned char buf[BUFSIZ]; /* Da buffer itself */
- int current_timeout; /* (termio{s} only), last value of VTIME */
- /* ser-unix.c termio{,s} only, we still need to wait for this many more
- seconds. */
- int timeout_remaining;
+ int current_timeout; /* (ser-unix.c termio{,s} only), last
+ value of VTIME */
+ int timeout_remaining; /* (ser-unix.c termio{,s} only), we
+ still need to wait for this many
+ more seconds. */
char *name; /* The name of the device or host */
struct _serial_t *next; /* Pointer to the next serial_t */
int refcnt; /* Number of pointers to this block */
+ int debug_p; /* Trace this serial devices operation. */
+ int async_state; /* Async internal state. */
void *async_context; /* Async event thread's context */
serial_event_ftype *async_handler;/* Async event handler */
};