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Code Issues Releases Wiki Activity

Refine sendmmsg, move to ST

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This commit is contained in:
winlin 2020-05-03 11:32:54 +08:00
parent 2a0562da5e
commit f71b833520
5 changed files with 40 additions and 52 deletions
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29
trunk/3rdparty/st-srs/io.c vendored
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@ -742,12 +742,9 @@ int st_sendmsg(_st_netfd_t *fd, const struct msghdr *msg, int flags, st_utime_t
return n;
}
int st_sendmmsg(st_netfd_t fd, void *msgvec, unsigned int vlen, int flags, st_utime_t timeout)
int st_sendmmsg(st_netfd_t fd, struct st_mmsghdr *msgvec, unsigned int vlen, int flags, st_utime_t timeout)
{
#if !defined(MD_HAVE_SENDMMSG) || !defined(_GNU_SOURCE)
return -1;
#else
#if defined(MD_HAVE_SENDMMSG) && defined(_GNU_SOURCE)
int n;
int left;
struct mmsghdr *p;
@ -774,6 +771,28 @@ int st_sendmmsg(st_netfd_t fd, void *msgvec, unsigned int vlen, int flags, st_ut
return n;
}
return (int)vlen - left;
#else
struct st_mmsghdr *p;
int i, n;
// @see http://man7.org/linux/man-pages/man2/sendmmsg.2.html
for (i = 0; i < (int)vlen; ++i) {
p = msgvec + i;
n = st_sendmsg(fd, &p->msg_hdr, flags, timeout);
if (n < 0) {
// An error is returned only if no datagrams could be sent.
if (i == 0) {
return n;
}
return i + 1;
}
p->msg_len = n;
}
// Returns the number of messages sent from msgvec; if this is less than vlen, the caller can retry with a
// further sendmmsg() call to send the remaining messages.
return vlen;
#endif
}