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#include "precompiled.h"
//
// Copyright (c) 2002-2011 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// HandleAllocator.cpp: Implements the gl::HandleAllocator class, which is used
// to allocate GL handles.
#include "libGLESv2/HandleAllocator.h"
#include "libGLESv2/main.h"
namespace gl
{
HandleAllocator::HandleAllocator() : mBaseValue(1), mNextValue(1)
{
}
HandleAllocator::~HandleAllocator()
{
}
void HandleAllocator::setBaseHandle(GLuint value)
{
ASSERT(mBaseValue == mNextValue);
mBaseValue = value;
mNextValue = value;
}
GLuint HandleAllocator::allocate()
{
if (mFreeValues.size())
{
GLuint handle = mFreeValues.back();
mFreeValues.pop_back();
return handle;
}
return mNextValue++;
}
void HandleAllocator::release(GLuint handle)
{
if (handle == mNextValue - 1)
{
// Don't drop below base value
if(mNextValue > mBaseValue)
{
mNextValue--;
}
}
else
{
// Only free handles that we own - don't drop below the base value
if (handle >= mBaseValue)
{
mFreeValues.push_back(handle);
}
}
}
}
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