util_stats.h

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/*
 * Copyright 2011-2013 Blender Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef __UTIL_STATS_H__
#define __UTIL_STATS_H__
 
#include "util/util_atomic.h"
#include "util/util_profiling.h"
 
CCL_NAMESPACE_BEGIN
 
class Stats {
 public:
  enum static_init_t { static_init = 0 };
 
  Stats() : mem_used(0), mem_peak(0)
  {
  }
  explicit Stats(static_init_t)
  {
  }
 
  void mem_alloc(size_t size)
  {
    atomic_add_and_fetch_z(&mem_used, size);
    atomic_fetch_and_update_max_z(&mem_peak, mem_used);
  }
 
  void mem_free(size_t size)
  {
    assert(mem_used >= size);
    atomic_sub_and_fetch_z(&mem_used, size);
  }
 
  size_t mem_used;
  size_t mem_peak;
};
 
CCL_NAMESPACE_END
 
#endif /* __UTIL_STATS_H__ */