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enhanced mio_dev_watch and MIO_DEV_WATCH_RENEW.

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drafting resource handling code in the http server
This commit is contained in:
hyung-hwan
2020-05-08 09:48:26 +00:00
parent 89335404c8
commit e2115286ec
6 changed files with 267 additions and 77 deletions
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22
mio/lib/mio.c
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@ -568,7 +568,7 @@ static MIO_INLINE void handle_event (mio_t* mio, mio_dev_t* dev, int events, int
}
skip_evcb:
if (dev && (dev->dev_cap & MIO_DEV_CAP_RENEW_REQUIRED) && mio_dev_watch(dev, MIO_DEV_WATCH_RENEW, 0) <= -1)
if (dev && (dev->dev_cap & MIO_DEV_CAP_RENEW_REQUIRED) && mio_dev_watch(dev, MIO_DEV_WATCH_RENEW, MIO_DEV_EVENT_IN) <= -1)
{
mio_dev_halt (dev);
dev = MIO_NULL;
@ -959,11 +959,15 @@ int mio_dev_watch (mio_dev_t* dev, mio_dev_watch_cmd_t cmd, int events)
break;
case MIO_DEV_WATCH_RENEW:
/* auto-renwal mode. input watching is requested all the time.
* output watching is requested only if there're enqueued
* data for writing. */
events = MIO_DEV_EVENT_IN;
if (!MIO_WQ_IS_EMPTY(&dev->wq)) events |= MIO_DEV_EVENT_OUT;
/* auto-renwal mode. input watching is taken from the events make passed in.
* output watching is requested only if there're enqueued data for writing.
* if you want to enable input watching while renewing, call this function like this.
* mio_dev_wtach (dev, MIO_DEV_WATCH_RENEW, MIO_DEV_EVENT_IN);
* if you want input whatching disabled while renewing, call this function like this.
* mio_dev_wtach (dev, MIO_DEV_WATCH_RENEW, 0); */
if (MIO_WQ_IS_EMPTY(&dev->wq)) events &= ~MIO_DEV_EVENT_OUT;
else events |= MIO_DEV_EVENT_OUT;
/* fall through */
case MIO_DEV_WATCH_UPDATE:
/* honor event watching requests as given by the caller */
@ -1054,7 +1058,7 @@ static int __dev_read (mio_dev_t* dev, int enabled, const mio_ntime_t* tmout, vo
goto update_timer;
renew_watch_now:
if (mio_dev_watch(dev, MIO_DEV_WATCH_RENEW, 0) <= -1) return -1;
if (mio_dev_watch(dev, MIO_DEV_WATCH_RENEW, MIO_DEV_EVENT_IN) <= -1) return -1;
goto update_timer;
update_timer:
@ -1259,7 +1263,7 @@ enqueue_data:
if (!(dev->dev_cap & MIO_DEV_CAP_OUT_WATCHED))
{
/* if output is not being watched, arrange to do so */
if (mio_dev_watch(dev, MIO_DEV_WATCH_RENEW, 0) <= -1)
if (mio_dev_watch(dev, MIO_DEV_WATCH_RENEW, MIO_DEV_EVENT_IN) <= -1)
{
unlink_wq (mio, q);
mio_freemem (mio, q);
@ -1469,7 +1473,7 @@ enqueue_data:
if (!(dev->dev_cap & MIO_DEV_CAP_OUT_WATCHED))
{
/* if output is not being watched, arrange to do so */
if (mio_dev_watch(dev, MIO_DEV_WATCH_RENEW, 0) <= -1)
if (mio_dev_watch(dev, MIO_DEV_WATCH_RENEW, MIO_DEV_EVENT_IN) <= -1)
{
unlink_wq (mio, q);
mio_freemem (mio, q);