void ResourceHandleManager::cancel(ResourceHandle* job)
{
if (removeScheduledJob(job))
return;
removeFromCurl(job);
// FIXME: report an error?
}
void CurlDownloadManager::updateHandleList()
{
MutexLocker locker(m_mutex);
// Remove curl easy handles from multi list
int size = m_removedHandleList.size();
for (int i = 0; i < size; i++) {
removeFromCurl(m_removedHandleList[0]);
m_removedHandleList.remove(0);
}
// Add pending curl easy handles to multi list
size = m_pendingHandleList.size();
for (int i = 0; i < size; i++) {
addToCurl(m_pendingHandleList[0]);
m_pendingHandleList.remove(0);
}
}
void ResourceHandleManager::downloadTimerCallback(Timer<ResourceHandleManager>* timer)
{
startScheduledJobs();
fd_set fdread;
fd_set fdwrite;
fd_set fdexcep;
int maxfd = 0;
struct timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec = selectTimeoutMS * 1000; // select waits microseconds
// Temporarily disable timers since signals may interrupt select(), raising EINTR errors on some platforms
setDeferringTimers(true);
int rc = 0;
do {
FD_ZERO(&fdread);
FD_ZERO(&fdwrite);
FD_ZERO(&fdexcep);
curl_multi_fdset(m_curlMultiHandle, &fdread, &fdwrite, &fdexcep, &maxfd);
// When the 3 file descriptors are empty, winsock will return -1
// and bail out, stopping the file download. So make sure we
// have valid file descriptors before calling select.
if (maxfd >= 0)
rc = ::select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
} while (rc == -1 && errno == EINTR);
setDeferringTimers(false);
if (-1 == rc) {
#ifndef NDEBUG
perror("bad: select() returned -1: ");
#endif
return;
}
int runningHandles = 0;
while (curl_multi_perform(m_curlMultiHandle, &runningHandles) == CURLM_CALL_MULTI_PERFORM) { }
// check the curl messages indicating completed transfers
// and free their resources
while (true) {
int messagesInQueue;
CURLMsg* msg = curl_multi_info_read(m_curlMultiHandle, &messagesInQueue);
if (!msg)
break;
// find the node which has same d->m_handle as completed transfer
CURL* handle = msg->easy_handle;
ASSERT(handle);
ResourceHandle* job = 0;
CURLcode err = curl_easy_getinfo(handle, CURLINFO_PRIVATE, &job);
ASSERT(CURLE_OK == err);
ASSERT(job);
if (!job)
continue;
ResourceHandleInternal* d = job->getInternal();
ASSERT(d->m_handle == handle);
if (d->m_cancelled) {
removeFromCurl(job);
continue;
}
if (CURLMSG_DONE != msg->msg)
continue;
if (CURLE_OK == msg->data.result) {
if (d->client())
d->client()->didFinishLoading(job);
} else {
#ifndef NDEBUG
char* url = 0;
curl_easy_getinfo(d->m_handle, CURLINFO_EFFECTIVE_URL, &url);
printf("Curl ERROR for url='%s', error: '%s'\n", url, curl_easy_strerror(msg->data.result));
#endif
if (d->client())
d->client()->didFail(job, ResourceError());
}
removeFromCurl(job);
}
bool started = startScheduledJobs(); // new jobs might have been added in the meantime
if (!m_downloadTimer.isActive() && (started || (runningHandles > 0)))
m_downloadTimer.startOneShot(pollTimeSeconds);
}
void ResourceHandleManager::downloadTimerCallback(Timer<ResourceHandleManager>* timer)
{
startScheduledJobs();
fd_set fdread;
FD_ZERO(&fdread);
fd_set fdwrite;
FD_ZERO(&fdwrite);
fd_set fdexcep;
FD_ZERO(&fdexcep);
int maxfd = 0;
curl_multi_fdset(m_curlMultiHandle, &fdread, &fdwrite, &fdexcep, &maxfd);
struct timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec = selectTimeoutMS * 1000; // select waits microseconds
int rc = ::select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout);
if (-1 == rc) {
#ifndef NDEBUG
printf("bad: select() returned -1\n");
#endif
return;
}
int runningHandles = 0;
CURLMcode curlCode = CURLM_CALL_MULTI_PERFORM;
while (CURLM_CALL_MULTI_PERFORM == curlCode) {
curlCode = curl_multi_perform(m_curlMultiHandle, &runningHandles);
}
// check the curl messages indicating completed transfers
// and free their resources
while (true) {
int messagesInQueue;
CURLMsg* msg = curl_multi_info_read(m_curlMultiHandle, &messagesInQueue);
if (!msg)
break;
if (CURLMSG_DONE != msg->msg)
continue;
// find the node which has same d->m_handle as completed transfer
CURL* handle = msg->easy_handle;
ASSERT(handle);
ResourceHandle* job = 0;
CURLcode err = curl_easy_getinfo(handle, CURLINFO_PRIVATE, &job);
ASSERT(CURLE_OK == err);
ASSERT(job);
if (!job)
continue;
ResourceHandleInternal* d = job->getInternal();
ASSERT(d->m_handle == handle);
if (CURLE_OK == msg->data.result) {
if (d->client())
d->client()->didFinishLoading(job);
} else {
#ifndef NDEBUG
char* url = 0;
curl_easy_getinfo(d->m_handle, CURLINFO_EFFECTIVE_URL, &url);
printf("Curl ERROR for url='%s', error: '%s'\n", url, curl_easy_strerror(msg->data.result));
#endif
if (d->client())
d->client()->didFail(job, ResourceError());
}
removeFromCurl(job);
}
bool started = startScheduledJobs(); // new jobs might have been added in the meantime
if (!m_downloadTimer.isActive() && (started || (runningHandles > 0)))
m_downloadTimer.startOneShot(pollTimeSeconds);
}
void ResourceHandleManager::cancel(ResourceHandle* job)
{
removeFromCurl(job);
// FIXME: report an error?
}
