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char: use common function to disable callbacks on chardev close

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This deduplicates code used a lot of times.

CC: <qemu-stable@nongnu.org>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
Amit Shah 2013-08-28 15:23:37 +05:30
parent 7ba9addc16
commit 26da70c725
1 changed files with 19 additions and 43 deletions
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62
qemu-char.c
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@ -725,6 +725,14 @@ static void io_remove_watch_poll(guint tag)
g_source_destroy(&iwp->parent);
}
static void remove_fd_in_watch(CharDriverState *chr)
{
if (chr->fd_in_tag) {
io_remove_watch_poll(chr->fd_in_tag);
chr->fd_in_tag = 0;
}
}
#ifndef _WIN32
static GIOChannel *io_channel_from_fd(int fd)
{
@ -829,10 +837,7 @@ static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
status = g_io_channel_read_chars(chan, (gchar *)buf,
len, &bytes_read, NULL);
if (status == G_IO_STATUS_EOF) {
if (chr->fd_in_tag) {
io_remove_watch_poll(chr->fd_in_tag);
chr->fd_in_tag = 0;
}
remove_fd_in_watch(chr);
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
return FALSE;
}
@ -862,11 +867,7 @@ static void fd_chr_update_read_handler(CharDriverState *chr)
{
FDCharDriver *s = chr->opaque;
if (chr->fd_in_tag) {
io_remove_watch_poll(chr->fd_in_tag);
chr->fd_in_tag = 0;
}
remove_fd_in_watch(chr);
if (s->fd_in) {
chr->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll,
fd_chr_read, chr);
@ -877,11 +878,7 @@ static void fd_chr_close(struct CharDriverState *chr)
{
FDCharDriver *s = chr->opaque;
if (chr->fd_in_tag) {
io_remove_watch_poll(chr->fd_in_tag);
chr->fd_in_tag = 0;
}
remove_fd_in_watch(chr);
if (s->fd_in) {
g_io_channel_unref(s->fd_in);
}
@ -1126,10 +1123,7 @@ static void pty_chr_state(CharDriverState *chr, int connected)
PtyCharDriver *s = chr->opaque;
if (!connected) {
if (chr->fd_in_tag) {
io_remove_watch_poll(chr->fd_in_tag);
chr->fd_in_tag = 0;
}
remove_fd_in_watch(chr);
s->connected = 0;
/* (re-)connect poll interval for idle guests: once per second.
* We check more frequently in case the guests sends data to
@ -1155,10 +1149,7 @@ static void pty_chr_close(struct CharDriverState *chr)
PtyCharDriver *s = chr->opaque;
int fd;
if (chr->fd_in_tag) {
io_remove_watch_poll(chr->fd_in_tag);
chr->fd_in_tag = 0;
}
remove_fd_in_watch(chr);
fd = g_io_channel_unix_get_fd(s->fd);
g_io_channel_unref(s->fd);
close(fd);
@ -2220,10 +2211,7 @@ static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
s->bufcnt = bytes_read;
s->bufptr = s->bufcnt;
if (status != G_IO_STATUS_NORMAL) {
if (chr->fd_in_tag) {
io_remove_watch_poll(chr->fd_in_tag);
chr->fd_in_tag = 0;
}
remove_fd_in_watch(chr);
return FALSE;
}
@ -2241,11 +2229,7 @@ static void udp_chr_update_read_handler(CharDriverState *chr)
{
NetCharDriver *s = chr->opaque;
if (chr->fd_in_tag) {
io_remove_watch_poll(chr->fd_in_tag);
chr->fd_in_tag = 0;
}
remove_fd_in_watch(chr);
if (s->chan) {
chr->fd_in_tag = io_add_watch_poll(s->chan, udp_chr_read_poll,
udp_chr_read, chr);
@ -2255,10 +2239,8 @@ static void udp_chr_update_read_handler(CharDriverState *chr)
static void udp_chr_close(CharDriverState *chr)
{
NetCharDriver *s = chr->opaque;
if (chr->fd_in_tag) {
io_remove_watch_poll(chr->fd_in_tag);
chr->fd_in_tag = 0;
}
remove_fd_in_watch(chr);
if (s->chan) {
g_io_channel_unref(s->chan);
closesocket(s->fd);
@ -2493,10 +2475,7 @@ static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
if (s->listen_chan) {
s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
}
if (chr->fd_in_tag) {
io_remove_watch_poll(chr->fd_in_tag);
chr->fd_in_tag = 0;
}
remove_fd_in_watch(chr);
g_io_channel_unref(s->chan);
s->chan = NULL;
closesocket(s->fd);
@ -2610,10 +2589,7 @@ static void tcp_chr_close(CharDriverState *chr)
{
TCPCharDriver *s = chr->opaque;
if (s->fd >= 0) {
if (chr->fd_in_tag) {
io_remove_watch_poll(chr->fd_in_tag);
chr->fd_in_tag = 0;
}
remove_fd_in_watch(chr);
if (s->chan) {
g_io_channel_unref(s->chan);
}