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/*
* Copyright (C) 2012-2017 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
*/
#pragma once
#include "BPlatform.h"
#include "Sizes.h"
namespace bmalloc {
size_t availableMemory();
#if BPLATFORM(IOS)
struct MemoryStatus {
MemoryStatus(size_t memoryFootprint, double percentAvailableMemoryInUse)
: memoryFootprint(memoryFootprint)
, percentAvailableMemoryInUse(percentAvailableMemoryInUse)
{
}
size_t memoryFootprint;
double percentAvailableMemoryInUse;
};
MemoryStatus memoryStatus();
inline size_t memoryFootprint()
{
auto memoryUse = memoryStatus();
return memoryUse.memoryFootprint;
}
inline double percentAvailableMemoryInUse()
{
auto memoryUse = memoryStatus();
return memoryUse.percentAvailableMemoryInUse;
}
#endif
inline bool isUnderMemoryPressure()
{
#if BPLATFORM(IOS)
return percentAvailableMemoryInUse() > memoryPressureThreshold;
#else
return false;
#endif
}
} // namespace bmalloc