FreeChainXenon/binutils-gdb
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2012-06-11 Pedro Alves <palves@redhat.com>

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* ser-base.c (run_async_handler_and_reschedule): New.
	(fd_event, push_event): Use it.
	* serial.c (serial_open, serial_fdopen_ops): Set the initial
	reference count to 1.
	(do_serial_close): Set the bufp field to NULL.  Use serial_unref
	instead of xfree.
	(serial_is_open, serial_ref, serial_unref): New.
	* serial.h (serial_open): Adjust comment.
	(serial_is_open): Declare.
	(serial_close): Adjust comment.
	(serial_ref, serial_unref) Declare.
	(struct serial): New field 'refcnt'.
This commit is contained in:
Pedro Alves 2012-06-11 20:36:53 +00:00
parent d5ad6aa5ce
commit ddefb60ff8
4 changed files with 88 additions and 11 deletions
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27
gdb/serial.c
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@ -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
@ -306,6 +311,26 @@ serial_un_fdopen (struct serial *scb)
do_serial_close (scb, 0);
}
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)
{