diff options
Diffstat (limited to 'gdb/serial.h')
| -rw-r--r-- | gdb/serial.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gdb/serial.h b/gdb/serial.h index 1f0accd..49ad4d1 100644 --- a/gdb/serial.h +++ b/gdb/serial.h @@ -191,6 +191,11 @@ extern int serial_debug_p (struct serial *scb); struct serial { int fd; /* File descriptor */ + /* File descriptor for a separate error stream that should be + immediately forwarded to gdb_stderr. This may be -1. + If != -1, this descriptor should be non-blocking or + ops->avail should be non-NULL. */ + int error_fd; struct serial_ops *ops; /* Function vector */ void *state; /* Local context info for open FD */ serial_ttystate ttystate; /* Not used (yet) */ @@ -246,6 +251,11 @@ struct serial_ops /* Perform a low-level write operation, writing (at most) COUNT bytes from BUF. */ int (*write_prim)(struct serial *scb, const void *buf, size_t count); + /* Return that number of bytes that can be read from FD + without blocking. Return value of -1 means that the + the read will not block even if less that requested bytes + are available. */ + int (*avail)(struct serial *scb, int fd); #ifdef USE_WIN32API /* Return a handle to wait on, indicating available data from SCB |