87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
//
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// Copyright (c) 2009-2010 Mikko Mononen memon@inside.org
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would be
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// appreciated but is not required.
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// 2. Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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// 3. This notice may not be removed or altered from any source distribution.
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//
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#include <stdlib.h>
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#include <string.h>
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#include "RecastAlloc.h"
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#include "RecastAssert.h"
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static void *rcAllocDefault(size_t size, rcAllocHint)
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{
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return malloc(size);
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}
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static void rcFreeDefault(void *ptr)
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{
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free(ptr);
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}
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static rcAllocFunc* sRecastAllocFunc = rcAllocDefault;
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static rcFreeFunc* sRecastFreeFunc = rcFreeDefault;
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/// @see rcAlloc, rcFree
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void rcAllocSetCustom(rcAllocFunc *allocFunc, rcFreeFunc *freeFunc)
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{
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sRecastAllocFunc = allocFunc ? allocFunc : rcAllocDefault;
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sRecastFreeFunc = freeFunc ? freeFunc : rcFreeDefault;
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}
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/// @see rcAllocSetCustom
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void* rcAlloc(size_t size, rcAllocHint hint)
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{
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return sRecastAllocFunc(size, hint);
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}
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/// @par
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///
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/// @warning This function leaves the value of @p ptr unchanged. So it still
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/// points to the same (now invalid) location, and not to null.
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///
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/// @see rcAllocSetCustom
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void rcFree(void* ptr)
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{
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if (ptr)
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sRecastFreeFunc(ptr);
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}
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/// @class rcIntArray
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///
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/// While it is possible to pre-allocate a specific array size during
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/// construction or by using the #resize method, certain methods will
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/// automatically resize the array as needed.
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///
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/// @warning The array memory is not initialized to zero when the size is
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/// manually set during construction or when using #resize.
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/// @par
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///
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/// Using this method ensures the array is at least large enough to hold
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/// the specified number of elements. This can improve performance by
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/// avoiding auto-resizing during use.
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void rcIntArray::doResize(int n)
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{
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if (!m_cap) m_cap = n;
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while (m_cap < n) m_cap *= 2;
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int* newData = (int*)rcAlloc(m_cap*sizeof(int), RC_ALLOC_TEMP);
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rcAssert(newData);
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if (m_size && newData) memcpy(newData, m_data, m_size*sizeof(int));
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rcFree(m_data);
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m_data = newData;
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}
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