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https://gitlab.freedesktop.org/mesa/vulkan-wsi-layer.git
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f0b541a4e3
Change util::allocator's create and destroy methods so that they can allocate multiple objects, in line with the allocate and deallocate methods of std::allocator. Also add documentation for util::allocator and its methods. Finally, use util::allocator in swapchain.cpp, rather than allocating memory directly via VkAllocationCallbacks. Change-Id: I0bc25abe3cbc3af9608218411da8d70e04dd9749 Signed-off-by: Matteo Franchin <matteo.franchin@arm.com>
70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
/*
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* Copyright (c) 2020 Arm Limited.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "custom_allocator.hpp"
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extern "C" {
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static void *default_allocation(void *, size_t size, size_t, VkSystemAllocationScope)
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{
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return malloc(size);
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}
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static void *default_reallocation(void *, void *pOriginal, size_t size, size_t, VkSystemAllocationScope)
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{
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return realloc(pOriginal, size);
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}
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static void default_free(void *, void *pMemory)
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{
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free(pMemory);
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}
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}
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namespace util
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{
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/* If callbacks is already populated by vulkan then use those specified as default. */
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allocator::allocator(const VkAllocationCallbacks *callbacks, VkSystemAllocationScope scope)
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{
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m_scope = scope;
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if (callbacks != nullptr)
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{
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m_callbacks = *callbacks;
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}
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else
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{
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m_callbacks = {};
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m_callbacks.pfnAllocation = default_allocation;
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m_callbacks.pfnReallocation = default_reallocation;
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m_callbacks.pfnFree = default_free;
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}
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}
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const VkAllocationCallbacks *allocator::get_original_callbacks() const
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{
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return m_callbacks.pfnAllocation == default_allocation ? nullptr : &m_callbacks;
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}
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} /* namespace util */
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