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Untested (and compiled-out) evbuffer_write backend to use WSASend on win32 where we use writev on unix.

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svn:r998
This commit is contained in:
Nick Mathewson 2009-01-13 19:34:50 +00:00
parent fbd5e820d7
commit 822ca048ad
1 changed files with 27 additions and 1 deletions
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28
buffer.c
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@ -922,8 +922,34 @@ evbuffer_write_atmost(struct evbuffer *buffer, evutil_socket_t fd,
void *p = evbuffer_pullup(buffer, howmuch);
n = write(fd, p, howmuch, 0);
#endif
#elif 0
const int N_BUFFERS 8;
WSABUF buffers[N_BUFFERS];
struct evbuffer_chain *chain = buffer->first;
int i = 0;
DWORD bytesSent;
/* XXX make this top out at some maximal data length? if the buffer has
* (say) 1MB in it, split over 128 chains, there's no way it all gets
* written in one go. */
while (chain != NULL && i < N_BUFFERS && howmuch) {
buffers[i].buf = chain->buffer + chain->misalign;
if (howmuch >= chain->off) {
buffers[i++].len = chain->off;
howmuch -= chain->off;
} else {
buffers[i++].len = howmuch;
break;
}
chain = chain->next;
}
if (WSASend(s, buffers, i, &bytesSent, 0, NULL, NULL))
n = -1;
else
n = bytesSent;
#else
/* XXX(niels): investigate if windows has writev */
/* XXX(nickm) Don't disable this code until we know if the WSARecv
* code above works. */
void *p = evbuffer_pullup(buffer, howmuch);
n = send(fd, p, howmuch, 0);
#endif