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      1 /*
      2 * Copyright (C) 2012 Google Inc. All rights reserved.
      3 *
      4 * Redistribution and use in source and binary forms, with or without
      5 * modification, are permitted provided that the following conditions are
      6 * met:
      7 *
      8 *     * Redistributions of source code must retain the above copyright
      9 * notice, this list of conditions and the following disclaimer.
     10 *     * Redistributions in binary form must reproduce the above
     11 * copyright notice, this list of conditions and the following disclaimer
     12 * in the documentation and/or other materials provided with the
     13 * distribution.
     14 *     * Neither the name of Google Inc. nor the names of its
     15 * contributors may be used to endorse or promote products derived from
     16 * this software without specific prior written permission.
     17 *
     18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29 */
     30 
     31 #ifndef InspectorCounters_h
     32 #define InspectorCounters_h
     33 
     34 #include "wtf/FastAllocBase.h"
     35 
     36 #if ENABLE(ASSERT)
     37 #include "wtf/MainThread.h"
     38 #endif
     39 
     40 namespace blink {
     41 
     42 class InspectorCounters {
     43 public:
     44     enum CounterType {
     45         DocumentCounter,
     46         NodeCounter,
     47         JSEventListenerCounter,
     48         CounterTypeLength
     49     };
     50 
     51     static inline void incrementCounter(CounterType type)
     52     {
     53         ASSERT(isMainThread());
     54         ++s_counters[type];
     55     }
     56 
     57     static inline void decrementCounter(CounterType type)
     58     {
     59         ASSERT(isMainThread());
     60         --s_counters[type];
     61     }
     62 
     63     static int counterValue(CounterType);
     64 
     65 private:
     66     InspectorCounters();
     67 
     68     static int s_counters[CounterTypeLength];
     69 };
     70 
     71 } // namespace blink
     72 
     73 #endif // !defined(InspectorCounters_h)
     74