diff options
Diffstat (limited to 'gdb/serial.c')
| -rw-r--r-- | gdb/serial.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/gdb/serial.c b/gdb/serial.c index c1f331d..1140feb 100644 --- a/gdb/serial.c +++ b/gdb/serial.c @@ -196,6 +196,7 @@ serial_open (const char *name) scb->bufcnt = 0; scb->bufp = scb->buf; scb->error_fd = -1; + scb->refcnt = 1; /* `...->open (...)' would get expanded by the open(2) syscall macro. */ if ((*scb->ops->open) (scb, open_name)) @@ -245,6 +246,7 @@ serial_fdopen_ops (const int fd, struct serial_ops *ops) scb->bufcnt = 0; scb->bufp = scb->buf; scb->error_fd = -1; + scb->refcnt = 1; scb->name = NULL; scb->debug_p = 0; @@ -291,7 +293,10 @@ do_serial_close (struct serial *scb, int really_close) if (scb->name) xfree (scb->name); - xfree (scb); + /* For serial_is_open. */ + scb->bufp = NULL; + + serial_unref (scb); } void @@ -307,6 +312,26 @@ serial_un_fdopen (struct serial *scb) } int +serial_is_open (struct serial *scb) +{ + return scb->bufp != NULL; +} + +void +serial_ref (struct serial *scb) +{ + scb->refcnt++; +} + +void +serial_unref (struct serial *scb) +{ + --scb->refcnt; + if (scb->refcnt == 0) + xfree (scb); +} + +int serial_readchar (struct serial *scb, int timeout) { int ch; |