generic-library/curl
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

curl_multi_wait: avoid second loop if nothing to do

Browse Source 
... hopefully this will also make clang-analyzer stop warning on
potentional NULL dereferences (which were false positives anyway).
This commit is contained in:
Daniel Stenberg
2013-03-09 22:26:07 +01:00
parent 64b2d2d77e
commit 136a3a0ee2
1 changed files with 32 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
lib/multi.c
View File

@@ -802,7 +802,8 @@ CURLMcode curl_multi_wait(CURLM *multi_handle,
curl_socket_t sockbunch[MAX_SOCKSPEREASYHANDLE]; curl_socket_t sockbunch[MAX_SOCKSPEREASYHANDLE];
int bitmap; int bitmap;
unsigned int i; unsigned int i;
unsigned int nfds = extra_nfds; unsigned int nfds = 0;
unsigned int curlfds;
struct pollfd *ufds = NULL; struct pollfd *ufds = NULL;
if(!GOOD_MULTI_HANDLE(multi)) if(!GOOD_MULTI_HANDLE(multi))
@@ -832,6 +833,9 @@ CURLMcode curl_multi_wait(CURLM *multi_handle,
easy = easy->next; /* check next handle */ easy = easy->next; /* check next handle */
} }
curlfds = nfds; /* number of internal file descriptors */
nfds += extra_nfds; /* add the externally provided ones */
if(nfds) { if(nfds) {
ufds = malloc(nfds * sizeof(struct pollfd)); ufds = malloc(nfds * sizeof(struct pollfd));
if(!ufds) if(!ufds)
@@ -839,6 +843,10 @@ CURLMcode curl_multi_wait(CURLM *multi_handle,
} }
nfds = 0; nfds = 0;
/* only do the second loop if we found descriptors in the first stage run
above */
if(curlfds) {
/* Add the curl handles to our pollfds first */ /* Add the curl handles to our pollfds first */
easy=multi->easy.next; easy=multi->easy.next;
while(easy != &multi->easy) { while(easy != &multi->easy) {
@@ -866,6 +874,7 @@ CURLMcode curl_multi_wait(CURLM *multi_handle,
easy = easy->next; /* check next handle */ easy = easy->next; /* check next handle */
} }
}
/* Add external file descriptions from poll-like struct curl_waitfd */ /* Add external file descriptions from poll-like struct curl_waitfd */
for(i = 0; i < extra_nfds; i++) { for(i = 0; i < extra_nfds; i++) {