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multi: reuse WinSock events variable in Curl_multi_wait

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Since the struct is quite large (1 long and 10 ints) we
declare it once at the beginning of the function instead
of multiple times inside loops to avoid stack movements.

Reviewed-by: Viktor Szakats
Reviewed-by: Daniel Stenberg

Closes #5886
This commit is contained in:
Marc Hoersken 2020-09-12 21:59:26 +02:00
parent af09599958
commit 40d67da7ca
No known key found for this signature in database
GPG Key ID: 61E03CBED7BC859E
1 changed files with 11 additions and 12 deletions
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23
lib/multi.c
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@ -1095,6 +1095,7 @@ static CURLMcode Curl_multi_wait(struct Curl_multi *multi,
bool ufds_malloc = FALSE;
#else
struct pollfd pre_poll;
WSANETWORKEVENTS wsa_events;
DEBUGASSERT(multi->wsa_event != WSA_INVALID_EVENT);
#endif
@ -1295,18 +1296,17 @@ static CURLMcode Curl_multi_wait(struct Curl_multi *multi,
for(i = 0; i < extra_nfds; i++) {
unsigned short mask = 0;
#ifdef USE_WINSOCK
WSANETWORKEVENTS events = {0};
wsa_events.lNetworkEvents = 0;
mask = extra_fds[i].revents;
if(WSAEnumNetworkEvents(extra_fds[i].fd, multi->wsa_event,
&events) == 0) {
if(events.lNetworkEvents & (FD_READ|FD_ACCEPT|FD_CLOSE))
&wsa_events) == 0) {
if(wsa_events.lNetworkEvents & (FD_READ|FD_ACCEPT|FD_CLOSE))
mask |= CURL_WAIT_POLLIN;
if(events.lNetworkEvents & (FD_WRITE|FD_CONNECT|FD_CLOSE))
if(wsa_events.lNetworkEvents & (FD_WRITE|FD_CONNECT|FD_CLOSE))
mask |= CURL_WAIT_POLLOUT;
if(events.lNetworkEvents & FD_OOB)
if(wsa_events.lNetworkEvents & FD_OOB)
mask |= CURL_WAIT_POLLPRI;
if(ret && events.lNetworkEvents != 0)
if(ret && wsa_events.lNetworkEvents != 0)
retcode++;
}
WSAEventSelect(extra_fds[i].fd, multi->wsa_event, 0);
@ -1320,7 +1320,6 @@ static CURLMcode Curl_multi_wait(struct Curl_multi *multi,
if(r & POLLPRI)
mask |= CURL_WAIT_POLLPRI;
#endif
extra_fds[i].revents = mask;
}
@ -1334,13 +1333,13 @@ static CURLMcode Curl_multi_wait(struct Curl_multi *multi,
for(i = 0; i < MAX_SOCKSPEREASYHANDLE; i++) {
if(bitmap & (GETSOCK_READSOCK(i) | GETSOCK_WRITESOCK(i))) {
WSANETWORKEVENTS events = {0};
wsa_events.lNetworkEvents = 0;
if(WSAEnumNetworkEvents(sockbunch[i], multi->wsa_event,
&events) == 0) {
if(ret && events.lNetworkEvents != 0)
&wsa_events) == 0) {
if(ret && wsa_events.lNetworkEvents != 0)
retcode++;
}
if(ret && !timeout_ms && !events.lNetworkEvents) {
if(ret && !timeout_ms && wsa_events.lNetworkEvents == 0) {
if((bitmap & GETSOCK_READSOCK(i)) &&
SOCKET_READABLE(sockbunch[i], 0) > 0)
retcode++;