webrtc_m130/webrtc/api/notifier.h
nisse ede5da4960 Replace ASSERT by RTC_DCHECK in all non-test code.
Bulk of the changes were produced using

  git grep -l ' ASSERT(' | grep -v test | grep -v 'common\.h' |\
    xargs -n1 sed -i 's/ ASSERT(/ RTC_DCHECK(/'

followed by additional includes of base/checks.h in affected files,
and git cl format.

Also had to do some tweaks to #if !defined(NDEBUG) logic in the
taskrunner code (webrtc/base/task.cc, webrtc/base/taskparent.cc,
webrtc/base/taskparent.h, webrtc/base/taskrunner.cc), replaced to
consistently use RTC_DCHECK_IS_ON, and some of the checks needed
additional #if protection.

Test code was excluded, because it should probably use RTC_CHECK
rather than RTC_DCHECK.

BUG=webrtc:6424

Review-Url: https://codereview.webrtc.org/2620303003
Cr-Commit-Position: refs/heads/master@{#16030}
2017-01-12 13:15:36 +00:00

62 lines
1.7 KiB
C++

/*
* Copyright 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_API_NOTIFIER_H_
#define WEBRTC_API_NOTIFIER_H_
#include <list>
#include "webrtc/api/mediastreaminterface.h"
#include "webrtc/base/checks.h"
#include "webrtc/base/common.h"
namespace webrtc {
// Implement a template version of a notifier.
template <class T>
class Notifier : public T {
public:
Notifier() {
}
virtual void RegisterObserver(ObserverInterface* observer) {
RTC_DCHECK(observer != NULL);
observers_.push_back(observer);
}
virtual void UnregisterObserver(ObserverInterface* observer) {
for (std::list<ObserverInterface*>::iterator it = observers_.begin();
it != observers_.end(); it++) {
if (*it == observer) {
observers_.erase(it);
break;
}
}
}
void FireOnChanged() {
// Copy the list of observers to avoid a crash if the observer object
// unregisters as a result of the OnChanged() call. If the same list is used
// UnregisterObserver will affect the list make the iterator invalid.
std::list<ObserverInterface*> observers = observers_;
for (std::list<ObserverInterface*>::iterator it = observers.begin();
it != observers.end(); ++it) {
(*it)->OnChanged();
}
}
protected:
std::list<ObserverInterface*> observers_;
};
} // namespace webrtc
#endif // WEBRTC_API_NOTIFIER_H_