#pragma once
|
|
#include "os/Unity/AtomicQueue.h"
|
|
namespace il2cpp
|
{
|
namespace utils
|
{
|
struct ThreadSafeFreeListNode
|
{
|
ThreadSafeFreeListNode* nextFreeListNode;
|
|
ThreadSafeFreeListNode()
|
: nextFreeListNode(NULL) {}
|
};
|
|
/// Lockless allocator that keeps instances of T on a free list.
|
///
|
/// T must be derived from ThreadSafeFreeListNode.
|
///
|
/// NOTE: T must have sizeof(T) >= sizeof(void*).
|
template<typename T>
|
struct ThreadSafeFreeList
|
{
|
T* Allocate()
|
{
|
T* instance = reinterpret_cast<T*>(m_FreeList.Pop());
|
if (!instance)
|
instance = new T();
|
|
return instance;
|
}
|
|
void Release(T* instance)
|
{
|
ThreadSafeFreeListNode* node = static_cast<ThreadSafeFreeListNode*>(instance);
|
m_FreeList.Push(reinterpret_cast<il2cpp::os::AtomicNode*>(node));
|
}
|
|
~ThreadSafeFreeList()
|
{
|
T* instance;
|
while ((instance = reinterpret_cast<T*>(m_FreeList.Pop())) != NULL)
|
delete instance;
|
}
|
|
private:
|
|
ALIGN_TYPE(64) il2cpp::os::AtomicStack m_FreeList;
|
};
|
} /* utils */
|
} /* il2cpp */
|
