Laurent Desnogues <[email protected]> writes:
> Hello,
>
> On Tue, Mar 5, 2013 at 6:51 PM, Amit Shah <[email protected]> wrote:
>> From: Anthony Liguori <[email protected]>
>>
>> Signed-off-by: Anthony Liguori <[email protected]>
>> Signed-off-by: Amit Shah <[email protected]>
>> ---
>> qemu-char.c | 68
>> ++++++++++++++++++++++++++++++++++++++++---------------------
>> 1 file changed, 45 insertions(+), 23 deletions(-)
>>
>> diff --git a/qemu-char.c b/qemu-char.c
>> index eb0ac81..6dba943 100644
>> --- a/qemu-char.c
>> +++ b/qemu-char.c
>> @@ -990,12 +990,50 @@ typedef struct {
>> int connected;
>> int polling;
>> int read_bytes;
>> - QEMUTimer *timer;
>> + guint timer_tag;
>> } PtyCharDriver;
>>
>> static void pty_chr_update_read_handler(CharDriverState *chr);
>> static void pty_chr_state(CharDriverState *chr, int connected);
>>
>> +static gboolean pty_chr_timer(gpointer opaque)
>> +{
>> + struct CharDriverState *chr = opaque;
>> + PtyCharDriver *s = chr->opaque;
>> +
>> + if (s->connected) {
>> + goto out;
>> + }
>> + if (s->polling) {
>> + /* If we arrive here without polling being cleared due
>> + * read returning -EIO, then we are (re-)connected */
>> + pty_chr_state(chr, 1);
>> + goto out;
>> + }
>> +
>> + /* Next poll ... */
>> + pty_chr_update_read_handler(chr);
>> +
>> +out:
>> + return FALSE;
>> +}
>> +
>> +static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
>> +{
>> + PtyCharDriver *s = chr->opaque;
>> +
>> + if (s->timer_tag) {
>> + g_source_remove(s->timer_tag);
>> + s->timer_tag = 0;
>> + }
>> +
>> + if (ms == 1000) {
>> + s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
>
> It looks like g_timeout_add_seconds isn't available for
> poor people using some old distros (glib 2.12.3 here).
Can you test adding:
#if !GLIB_CHECK_VERSION(2, 14, 0)
static guint g_timeout_add_seconds(guint interval, GSourceFunc function,
gpointer data)
{
return g_timeout_add(interval * 1000, function, data);
}
#endif
We probably should introduce a glib-compat to centralize work arounds
for older versions of glib...
Regards,
Anthony Liguori
>
> Thanks,
>
> Laurent
>
>> + } else {
>> + s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
>> + }
>> +}
>> +
>> static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
>> {
>> PtyCharDriver *s = chr->opaque;
>> @@ -1065,7 +1103,7 @@ static void
>> pty_chr_update_read_handler(CharDriverState *chr)
>> * timeout to the normal (much longer) poll interval before the
>> * timer triggers.
>> */
>> - qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 10);
>> + pty_chr_rearm_timer(chr, 10);
>> }
>>
>> static void pty_chr_state(CharDriverState *chr, int connected)
>> @@ -1080,7 +1118,7 @@ static void pty_chr_state(CharDriverState *chr, int
>> connected)
>> /* (re-)connect poll interval for idle guests: once per second.
>> * We check more frequently in case the guests sends data to
>> * the virtual device linked to our pty. */
>> - qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 1000);
>> + pty_chr_rearm_timer(chr, 1000);
>> } else {
>> if (!s->connected)
>> qemu_chr_generic_open(chr);
>> @@ -1088,23 +1126,6 @@ static void pty_chr_state(CharDriverState *chr, int
>> connected)
>> }
>> }
>>
>> -static void pty_chr_timer(void *opaque)
>> -{
>> - struct CharDriverState *chr = opaque;
>> - PtyCharDriver *s = chr->opaque;
>> -
>> - if (s->connected)
>> - return;
>> - if (s->polling) {
>> - /* If we arrive here without polling being cleared due
>> - * read returning -EIO, then we are (re-)connected */
>> - pty_chr_state(chr, 1);
>> - return;
>> - }
>> -
>> - /* Next poll ... */
>> - pty_chr_update_read_handler(chr);
>> -}
>>
>> static void pty_chr_close(struct CharDriverState *chr)
>> {
>> @@ -1117,8 +1138,9 @@ static void pty_chr_close(struct CharDriverState *chr)
>> fd = g_io_channel_unix_get_fd(s->fd);
>> g_io_channel_unref(s->fd);
>> close(fd);
>> - qemu_del_timer(s->timer);
>> - qemu_free_timer(s->timer);
>> + if (s->timer_tag) {
>> + g_source_remove(s->timer_tag);
>> + }
>> g_free(s);
>> qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
>> }
>> @@ -1170,7 +1192,7 @@ static CharDriverState *qemu_chr_open_pty(QemuOpts
>> *opts)
>> chr->chr_add_watch = pty_chr_add_watch;
>>
>> s->fd = io_channel_from_fd(master_fd);
>> - s->timer = qemu_new_timer_ms(rt_clock, pty_chr_timer, chr);
>> + s->timer_tag = 0;
>>
>> return chr;
>> }
>> --
>> 1.8.1.2
>>
>>
