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Diffstat (limited to 'Swiften/EventLoop/EventLoop.cpp')
-rw-r--r--Swiften/EventLoop/EventLoop.cpp124
1 files changed, 63 insertions, 61 deletions
diff --git a/Swiften/EventLoop/EventLoop.cpp b/Swiften/EventLoop/EventLoop.cpp
index 8e7add5..186616f 100644
--- a/Swiften/EventLoop/EventLoop.cpp
+++ b/Swiften/EventLoop/EventLoop.cpp
@@ -8,31 +8,30 @@
#include <algorithm>
#include <cassert>
+#include <vector>
#include <boost/bind.hpp>
#include <boost/lambda/bind.hpp>
#include <boost/lambda/lambda.hpp>
#include <boost/optional.hpp>
-#include <boost/thread/locks.hpp>
#include <Swiften/Base/Log.h>
-#include <Swiften/Base/foreach.h>
namespace lambda = boost::lambda;
namespace Swift {
inline void invokeCallback(const Event& event) {
- try {
- assert(!event.callback.empty());
- event.callback();
- }
- catch (const std::exception& e) {
- SWIFT_LOG(error) << "Uncaught exception in event loop: " << e.what() << std::endl;
- }
- catch (...) {
- SWIFT_LOG(error) << "Uncaught non-exception in event loop" << std::endl;
- }
+ try {
+ assert(!event.callback.empty());
+ event.callback();
+ }
+ catch (const std::exception& e) {
+ SWIFT_LOG(error) << "Uncaught exception in event loop: " << e.what() << std::endl;
+ }
+ catch (...) {
+ SWIFT_LOG(error) << "Uncaught non-exception in event loop" << std::endl;
+ }
}
EventLoop::EventLoop() : nextEventID_(0), handlingEvents_(false) {
@@ -42,59 +41,62 @@ EventLoop::~EventLoop() {
}
void EventLoop::handleNextEvents() {
- const int eventsBatched = 100;
- // If handleNextEvents is already in progress, e.g. in case of a recursive call due to
- // the event loop implementation, then do no handle further events. Instead call
- // eventPosted() to continue event handling later.
- bool callEventPosted = handlingEvents_;
- if (!handlingEvents_) {
- handlingEvents_ = true;
- boost::recursive_mutex::scoped_lock lock(removeEventsMutex_);
- {
- std::vector<Event> nextEvents;
- {
- boost::recursive_mutex::scoped_lock lock(eventsMutex_);
- for (int n = 0; ((n < eventsBatched) && !events_.empty()); n++) {
- nextEvents.push_back(events_.front());
- events_.pop_front();
- }
- callEventPosted = !events_.empty();
- }
- if (!nextEvents.empty()) {
- foreach (const Event& event, nextEvents) {
- invokeCallback(event);
- }
- }
- }
- handlingEvents_ = false;
- }
-
- if (callEventPosted) {
- eventPosted();
- }
+ const int eventsBatched = 100;
+ // If handleNextEvents is already in progress, e.g. in case of a recursive call due to
+ // the event loop implementation, then do no handle further events. Instead call
+ // eventPosted() to continue event handling later.
+ bool callEventPosted = handlingEvents_;
+ if (!handlingEvents_) {
+ handlingEvents_ = true;
+ std::unique_lock<std::recursive_mutex> lock(removeEventsMutex_);
+ {
+ std::vector<Event> nextEvents;
+ {
+ std::unique_lock<std::recursive_mutex> lock(eventsMutex_);
+ for (int n = 0; ((n < eventsBatched) && !events_.empty()); n++) {
+ nextEvents.push_back(events_.front());
+ events_.pop_front();
+ }
+ callEventPosted = !events_.empty();
+ }
+ if (!nextEvents.empty()) {
+ for (const auto& event : nextEvents) {
+ invokeCallback(event);
+ }
+ }
+ }
+ handlingEvents_ = false;
+ }
+
+ if (callEventPosted) {
+ eventPosted();
+ }
}
-void EventLoop::postEvent(boost::function<void ()> callback, boost::shared_ptr<EventOwner> owner) {
- Event event(owner, callback);
- bool callEventPosted = false;
- {
- boost::recursive_mutex::scoped_lock lock(eventsMutex_);
-
- callEventPosted = events_.empty();
-
- event.id = nextEventID_;
- nextEventID_++;
- events_.push_back(event);
- }
- if (callEventPosted) {
- eventPosted();
- }
+void EventLoop::postEvent(boost::function<void ()> callback, std::shared_ptr<EventOwner> owner) {
+ Event event(owner, callback);
+ bool callEventPosted = false;
+ {
+ std::unique_lock<std::recursive_mutex> lock(eventsMutex_);
+
+ callEventPosted = events_.empty();
+
+ event.id = nextEventID_;
+ nextEventID_++;
+ events_.push_back(event);
+ }
+ if (callEventPosted) {
+ eventPosted();
+ }
}
-void EventLoop::removeEventsFromOwner(boost::shared_ptr<EventOwner> owner) {
- boost::recursive_mutex::scoped_lock removeLock(removeEventsMutex_);
- boost::recursive_mutex::scoped_lock lock(eventsMutex_);
- events_.remove_if(lambda::bind(&Event::owner, lambda::_1) == owner);
+void EventLoop::removeEventsFromOwner(std::shared_ptr<EventOwner> owner) {
+ std::unique_lock<std::recursive_mutex> removeLock(removeEventsMutex_, std::defer_lock);
+ std::unique_lock<std::recursive_mutex> eventsLock(eventsMutex_, std::defer_lock);
+
+ std::lock(removeLock, eventsLock);
+
+ events_.remove_if(lambda::bind(&Event::owner, lambda::_1) == owner);
}
}