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block/curl: Implement a flush function on the fd handlers 

Signed-off-by: Nick Thomas <nick@bytemark.co.uk>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Nick Thomas 2011-09-21 11:55:49 +01:00 committed by Kevin Wolf
parent 465f1ab161
commit c84dcdc1d6
1 changed files with 22 additions and 4 deletions
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26
block/curl.c
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@ -76,6 +76,7 @@ typedef struct BDRVCURLState {
static void curl_clean_state(CURLState *s);
static void curl_multi_do(void *arg);
static int curl_aio_flush(void *opaque);
static int curl_sock_cb(CURL *curl, curl_socket_t fd, int action,
void *s, void *sp)
@ -83,14 +84,16 @@ static int curl_sock_cb(CURL *curl, curl_socket_t fd, int action,
DPRINTF("CURL (AIO): Sock action %d on fd %d\n", action, fd);
switch (action) {
case CURL_POLL_IN:
qemu_aio_set_fd_handler(fd, curl_multi_do, NULL, NULL, NULL, s);
qemu_aio_set_fd_handler(fd, curl_multi_do, NULL, curl_aio_flush,
NULL, s);
break;
case CURL_POLL_OUT:
qemu_aio_set_fd_handler(fd, NULL, curl_multi_do, NULL, NULL, s);
qemu_aio_set_fd_handler(fd, NULL, curl_multi_do, curl_aio_flush,
NULL, s);
break;
case CURL_POLL_INOUT:
qemu_aio_set_fd_handler(fd, curl_multi_do,
curl_multi_do, NULL, NULL, s);
qemu_aio_set_fd_handler(fd, curl_multi_do, curl_multi_do,
curl_aio_flush, NULL, s);
break;
case CURL_POLL_REMOVE:
qemu_aio_set_fd_handler(fd, NULL, NULL, NULL, NULL, NULL);
@ -412,6 +415,21 @@ out_noclean:
return -EINVAL;
}
static int curl_aio_flush(void *opaque)
{
BDRVCURLState *s = opaque;
int i, j;
for (i=0; i < CURL_NUM_STATES; i++) {
for(j=0; j < CURL_NUM_ACB; j++) {
if (s->states[i].acb[j]) {
return 1;
}
}
}
return 0;
}
static void curl_aio_cancel(BlockDriverAIOCB *blockacb)
{
// Do we have to implement canceling? Seems to work without...