bool FSEventsEventPublisher::isStreamRunning() const {
if (stream_ == nullptr || !stream_started_ || run_loop_ == nullptr) {
return false;
}
return CFRunLoopIsWaiting(run_loop_);
}
//-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
// Reset()
//-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
void CFMachPortThread::Reset(CFMachPortCallBack portCallBack, void* userData)
{
// Wait for the thread to be running or invalid prior to tearing it down.
while (kStarting == mState)
pthread_yield_np();
if (kRunning == mState)
{
// Wait for the thread's run loop to be "waiting." This will avoid a small window of having set 'mState = kRunning' but not having invoked CFRunLoopRun() yet.
while (not CFRunLoopIsWaiting(mRunLoop.GetCFObject()))
pthread_yield_np();
// Stop the thread's run loop
CFRunLoopStop(mRunLoop.GetCFObject());
// Set the thread's state to kStopping
mState = kStopping;
// Wait for the thread to run to completion (it will set the state to kInvalid)
while (kStopping == mState)
{
(void) pthread_cond_signal(mStoppingCondition);
pthread_yield_np();
}
}
mPort = MACH_PORT_NULL;
mPortCallBack = 0;
mUserData = 0;
mPThread = 0;
mRunLoop = 0;
mState = kInvalid;
if (0 != portCallBack)
{
typedef void* (*PThreadStart)(void*);
mPortCallBack = portCallBack;
mUserData = userData;
mState = kStarting;
int err = pthread_create(&mPThread, 0, reinterpret_cast<PThreadStart>(Start), this);
ThrowIfError(err, CAException(err), "CMIO::PTA::CFMachPortThread::Reset: pthread_create() failed");
(void) pthread_detach(mPThread);
}
}
/* CF_EXPORT */ void
CFNetServiceBrowserStopSearch(CFNetServiceBrowserRef b, CFStreamError* error) {
__CFNetServiceBrowser* browser = (__CFNetServiceBrowser*)b;
// By default, the error is marked as a cancel
CFStreamError extra = {kCFStreamErrorDomainNetServices , kCFNetServicesErrorCancel};
// Make sure error has a value.
if (!error)
error = &extra;
// Lock down the browser
__CFSpinLock(&(browser->_lock));
// Make sure there is something to cancel.
if (browser->_trigger) {
CFRunLoopSourceContext ctxt = {
0, // version
browser, // info
NULL, // retain
NULL, // release
NULL, // copyDescription
NULL, // equal
NULL, // hash
NULL, // schedule
NULL, // cancel
(void(*)(void*))(&_BrowserCancel) // perform
};
// Remove the trigger from run loops and modes
_CFTypeUnscheduleFromMultipleRunLoops(browser->_trigger, browser->_schedules);
// Go ahead and invalidate the trigger
_CFTypeInvalidate(browser->_trigger);
// Release the trigger now.
CFRelease(browser->_trigger);
// Need to clean up the service discovery stuff if there is
if (browser->_browse) {
// Release the underlying service discovery reference
DNSServiceRefDeallocate(browser->_browse);
browser->_browse = NULL;
// Dump all the lists of items.
CFDictionaryRemoveAllValues(browser->_found);
CFArrayRemoveAllValues(browser->_adds);
CFArrayRemoveAllValues(browser->_removes);
}
// Copy the error into place
memmove(&(browser->_error), error, sizeof(error[0]));
// Create the cancel source
browser->_trigger = CFRunLoopSourceCreate(CFGetAllocator(browser), 0, &ctxt);
// If the cancel was created, need to schedule and signal it.
if (browser->_trigger) {
CFArrayRef schedules = browser->_schedules;
CFIndex i, count = CFArrayGetCount(schedules);
// Schedule the new trigger
_CFTypeScheduleOnMultipleRunLoops(browser->_trigger, schedules);
// Signal the cancel for immediate attention.
CFRunLoopSourceSignal((CFRunLoopSourceRef)(browser->_trigger));
// Make sure the signal can make it through
for (i = 0; i < count; i += 2) {
// Grab the run loop for checking
CFRunLoopRef runloop = (CFRunLoopRef)CFArrayGetValueAtIndex(schedules, i);
// If it's sleeping, need to further check it.
if (CFRunLoopIsWaiting(runloop)) {
// Grab the mode for further check
CFStringRef mode = CFRunLoopCopyCurrentMode(runloop);
if (mode) {
// If the trigger is in the right mode, need to wake up the run loop.
if (CFRunLoopContainsSource(runloop, (CFRunLoopSourceRef)(browser->_trigger), mode)) {
CFRunLoopWakeUp(runloop);
}
// Don't need this anymore.
CFRelease(mode);
}
}
}
}
}
// Unlock the browser
__CFSpinUnlock(&(browser->_lock));
}
