starboard/common/instance_counter.h

// Copyright 2019 The Cobalt Authors. All Rights Reserved.
//
// 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 STARBOARD_COMMON_INSTANCE_COUNTER_H_
#define STARBOARD_COMMON_INSTANCE_COUNTER_H_

#include "starboard/atomic.h"
#include "starboard/common/log.h"

#if defined(COBALT_BUILD_TYPE_GOLD)

#define DECLARE_INSTANCE_COUNTER(class_name)
#define ON_INSTANCE_CREATED(class_name)
#define ON_INSTANCE_RELEASED(class_name)

#else  // defined(COBALT_BUILD_TYPE_GOLD)

#define DECLARE_INSTANCE_COUNTER(class_name)      \
  namespace {                                     \
  SbAtomic32 s_##class_name##_instance_count = 0; \
  }

#define ON_INSTANCE_CREATED(class_name)                       \
  {                                                           \
    SB_LOG(INFO) << "New instance of " << #class_name         \
                 << " is created. We have "                   \
                 << (SbAtomicNoBarrier_Increment(             \
                        &s_##class_name##_instance_count, 1)) \
                 << " instances in total.";                   \
  }

#define ON_INSTANCE_RELEASED(class_name)                                      \
  {                                                                           \
    SB_LOG(INFO) << "Instance of " << #class_name << " is released. We have " \
                 << (SbAtomicNoBarrier_Increment(                             \
                        &s_##class_name##_instance_count, -1))                \
                 << " instances in total.";                                   \
  }
#endif  // defined(COBALT_BUILD_TYPE_GOLD)

#endif  // STARBOARD_COMMON_INSTANCE_COUNTER_H_