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#include "XmlRpcDispatch.h"
#include "XmlRpcSource.h"
#include "XmlRpcUtil.h"
#include <math.h>
#include <sys/timeb.h>
#if defined(_WINDOWS)
# include <winsock2.h>
# define USE_FTIME
# if defined(_MSC_VER)
# define timeb _timeb
# define ftime _ftime
# endif
#else
# include <sys/time.h>
#endif // _WINDOWS
using namespace XmlRpc;
XmlRpcDispatch::XmlRpcDispatch()
{
_endTime = -1.0;
_doClear = false;
_inWork = false;
}
XmlRpcDispatch::~XmlRpcDispatch()
{
}
// Monitor this source for the specified events and call its event handler
// when the event occurs
void
XmlRpcDispatch::addSource(XmlRpcSource* source, unsigned mask)
{
_sources.push_back(MonitoredSource(source, mask));
}
// Stop monitoring this source. Does not close the source.
void
XmlRpcDispatch::removeSource(XmlRpcSource* source)
{
for (SourceList::iterator it=_sources.begin(); it!=_sources.end(); ++it)
if (it->getSource() == source)
{
_sources.erase(it);
break;
}
}
// Modify the types of events to watch for on this source
void
XmlRpcDispatch::setSourceEvents(XmlRpcSource* source, unsigned eventMask)
{
for (SourceList::iterator it=_sources.begin(); it!=_sources.end(); ++it)
if (it->getSource() == source)
{
it->getMask() = eventMask;
break;
}
}
// Watch current set of sources and process events
void
XmlRpcDispatch::work(double timeout)
{
// Compute end time
_endTime = (timeout < 0.0) ? -1.0 : (getTime() + timeout);
_doClear = false;
_inWork = true;
// Only work while there is something to monitor
while (_sources.size() > 0) {
// Construct the sets of descriptors we are interested in
fd_set inFd, outFd, excFd;
FD_ZERO(&inFd);
FD_ZERO(&outFd);
FD_ZERO(&excFd);
int maxFd = -1; // Not used on windows
SourceList::iterator it;
for (it=_sources.begin(); it!=_sources.end(); ++it) {
int fd = it->getSource()->getfd();
if (it->getMask() & ReadableEvent) FD_SET(fd, &inFd);
if (it->getMask() & WritableEvent) FD_SET(fd, &outFd);
if (it->getMask() & Exception) FD_SET(fd, &excFd);
if (it->getMask() && fd > maxFd) maxFd = fd;
}
// Check for events
int nEvents;
if (timeout < 0.0)
nEvents = select(maxFd+1, &inFd, &outFd, &excFd, NULL);
else
{
struct timeval tv;
tv.tv_sec = (int)floor(timeout);
tv.tv_usec = ((int)floor(1000000.0 * (timeout-floor(timeout)))) % 1000000;
nEvents = select(maxFd+1, &inFd, &outFd, &excFd, &tv);
}
if (nEvents < 0)
{
XmlRpcUtil::error("Error in XmlRpcDispatch::work: error in select (%d).", nEvents);
_inWork = false;
return;
}
// Process events
for (it=_sources.begin(); it != _sources.end(); )
{
SourceList::iterator thisIt = it++;
XmlRpcSource* src = thisIt->getSource();
int fd = src->getfd();
unsigned newMask = (unsigned) -1;
if (fd <= maxFd) {
// If you select on multiple event types this could be ambiguous
if (FD_ISSET(fd, &inFd))
newMask &= src->handleEvent(ReadableEvent);
if (FD_ISSET(fd, &outFd))
newMask &= src->handleEvent(WritableEvent);
if (FD_ISSET(fd, &excFd))
newMask &= src->handleEvent(Exception);
if ( ! newMask) {
_sources.erase(thisIt); // Stop monitoring this one
if ( ! src->getKeepOpen())
src->close();
} else if (newMask != (unsigned) -1) {
thisIt->getMask() = newMask;
}
}
}
// Check whether to clear all sources
if (_doClear)
{
SourceList closeList = _sources;
_sources.clear();
for (SourceList::iterator it=closeList.begin(); it!=closeList.end(); ++it) {
XmlRpcSource *src = it->getSource();
src->close();
}
_doClear = false;
}
// Check whether end time has passed
if (0 <= _endTime && getTime() > _endTime)
break;
}
_inWork = false;
}
// Exit from work routine. Presumably this will be called from
// one of the source event handlers.
void
XmlRpcDispatch::exit()
{
_endTime = 0.0; // Return from work asap
}
// Clear all sources from the monitored sources list
void
XmlRpcDispatch::clear()
{
if (_inWork)
_doClear = true; // Finish reporting current events before clearing
else
{
SourceList closeList = _sources;
_sources.clear();
for (SourceList::iterator it=closeList.begin(); it!=closeList.end(); ++it)
it->getSource()->close();
}
}
double
XmlRpcDispatch::getTime()
{
#ifdef USE_FTIME
struct timeb tbuff;
ftime(&tbuff);
return ((double) tbuff.time + ((double)tbuff.millitm / 1000.0) +
((double) tbuff.timezone * 60));
#else
struct timeval tv;
struct timezone tz;
gettimeofday(&tv, &tz);
return (tv.tv_sec + tv.tv_usec / 1000000.0);
#endif /* USE_FTIME */
}
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