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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef InstanceCounters_h
#define InstanceCounters_h
#include "platform/PlatformExport.h"
#include "wtf/Allocator.h"
#include "wtf/Atomics.h"
namespace blink {
class InstanceCounters {
STATIC_ONLY(InstanceCounters);
public:
enum CounterType {
AudioHandlerCounter,
DocumentCounter,
FrameCounter,
JSEventListenerCounter,
LayoutObjectCounter,
MediaKeySessionCounter,
MediaKeysCounter,
NodeCounter,
ResourceCounter,
ScriptPromiseCounter,
SuspendableObjectCounter,
V8PerContextDataCounter,
WorkerGlobalScopeCounter,
// This value must be the last.
CounterTypeLength,
};
static inline void incrementCounter(CounterType type) {
DCHECK_NE(type, NodeCounter);
atomicIncrement(&s_counters[type]);
}
static inline void decrementCounter(CounterType type) {
DCHECK_NE(type, NodeCounter);
atomicDecrement(&s_counters[type]);
}
static inline void incrementNodeCounter() {
DCHECK(isMainThread());
s_nodeCounter++;
}
static inline void decrementNodeCounter() {
DCHECK(isMainThread());
s_nodeCounter--;
}
PLATFORM_EXPORT static int counterValue(CounterType);
private:
PLATFORM_EXPORT static int s_counters[CounterTypeLength];
PLATFORM_EXPORT static int s_nodeCounter;
};
} // namespace blink
#endif // !defined(InstanceCounters_h)
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