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/* Copyright (C) 2011 Wildfire Games.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* arena allocator (variable-size blocks, no deallocation).
*/
#include "precompiled.h"
#include "lib/allocators/arena.h"
namespace Allocators {
template<class Storage>
struct BasicArenaTest
{
void operator()() const
{
Arena<Storage> a(100);
const size_t initialSpace = a.RemainingBytes();
void* p = a.allocate(100);
ENSURE(p != 0);
ENSURE(a.Contains(uintptr_t(p)));
ENSURE(a.RemainingBytes() == initialSpace-100);
ENSURE(a.Contains(uintptr_t(p)+1));
ENSURE(a.Contains(uintptr_t(p)+99));
ENSURE(!a.Contains(uintptr_t(p)-1));
ENSURE(!a.Contains(uintptr_t(p)+100));
if(a.RemainingBytes() == 0)
ENSURE(a.allocate(1) == 0); // full
else
ENSURE(a.allocate(1) != 0); // can still expand
a.DeallocateAll();
ENSURE(!a.Contains(uintptr_t(p)));
p = a.allocate(36);
ENSURE(p != 0);
ENSURE(a.Contains(uintptr_t(p)));
ENSURE(a.RemainingBytes() == initialSpace-36);
void* p2 = a.allocate(64);
ENSURE(p2 != 0);
ENSURE(a.Contains(uintptr_t(p2)));
ENSURE(a.RemainingBytes() == initialSpace-36-64);
ENSURE(p2 == (void*)(uintptr_t(p)+36));
if(a.RemainingBytes() == 0)
ENSURE(a.allocate(1) == 0); // full
else
ENSURE(a.allocate(1) != 0); // can still expand
}
};
void TestArena()
{
ForEachStorage<BasicArenaTest>();
}
} // namespace Allocators
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