RecastAlloc.h

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//
// Copyright (c) 2009-2010 Mikko Mononen memon@inside.org
//
// This software is provided 'as-is', without any express or implied
// warranty.  In no event will the authors be held liable for any damages
// arising from the use of this software.
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 1. The origin of this software must not be misrepresented; you must not
//    claim that you wrote the original software. If you use this software
//    in a product, an acknowledgment in the product documentation would be
//    appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//    misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
//

#ifndef RECASTALLOC_H
#define RECASTALLOC_H

enum rcAllocHint
{
        RC_ALLOC_PERM,          
        RC_ALLOC_TEMP           
};

//  @param[in]          size                    The size, in bytes of memory, to allocate.
//  @param[in]          rcAllocHint     A hint to the allocator on how long the memory is expected to be in use.
//  @return A pointer to the beginning of the allocated memory block, or null if the allocation failed.
typedef void* (rcAllocFunc)(int size, rcAllocHint hint);

typedef void (rcFreeFunc)(void* ptr);

void rcAllocSetCustom(rcAllocFunc *allocFunc, rcFreeFunc *freeFunc);

void* rcAlloc(int size, rcAllocHint hint);

void rcFree(void* ptr);


class rcIntArray
{
        int* m_data;
        int m_size, m_cap;
        inline rcIntArray(const rcIntArray&);
        inline rcIntArray& operator=(const rcIntArray&);
public:

        inline rcIntArray() : m_data(0), m_size(0), m_cap(0) {}

        inline rcIntArray(int n) : m_data(0), m_size(0), m_cap(0) { resize(n); }
        inline ~rcIntArray() { rcFree(m_data); }

        void resize(int n);

        inline void push(int item) { resize(m_size+1); m_data[m_size-1] = item; }

        inline int pop() { if (m_size > 0) m_size--; return m_data[m_size]; }

        inline const int& operator[](int i) const { return m_data[i]; }

        inline int& operator[](int i) { return m_data[i]; }

        inline int size() const { return m_size; }
};

template<class T> class rcScopedDelete
{
        T* ptr;
        inline T* operator=(T* p);
public:

        inline rcScopedDelete() : ptr(0) {}

        inline rcScopedDelete(T* p) : ptr(p) {}
        inline ~rcScopedDelete() { rcFree(ptr); }

        inline operator T*() { return ptr; }
};

#endif