rewrite iov_send_recv() and move it to iov.c
Make it much more understandable, add a missing
iov_cnt argument (number of iovs in the iov), and
add comments to it.
The new implementation has been extensively tested
by splitting a large buffer into many small
randomly-sized chunks, sending it over socket to
another, slow process and verifying the receiving
data is the same.
Also add a unit test for iov_send_recv(), sending/
receiving data between two processes over a socketpair
using random vectors and random sizes.
Signed-off-by: Michael Tokarev <[email protected]>
diff --git a/qemu-coroutine-io.c b/qemu-coroutine-io.c
index 6693c78..5734965 100644
--- a/qemu-coroutine-io.c
+++ b/qemu-coroutine-io.c
@@ -34,7 +34,7 @@
size_t done = 0;
ssize_t ret;
while (done < bytes) {
- ret = iov_send_recv(sockfd, iov,
+ ret = iov_send_recv(sockfd, iov, iov_cnt,
offset + done, bytes - done, do_send);
if (ret > 0) {
done += ret;
