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121 lines
4.8 KiB
C++
121 lines
4.8 KiB
C++
/**************************************************************************/
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/* jolt_temp_allocator.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all 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, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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/*
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Adapted to Godot from the Jolt Physics library.
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*/
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/*
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Copyright 2021 Jorrit Rouwe
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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR
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A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "jolt_temp_allocator.h"
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#include "../jolt_project_settings.h"
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#include "core/variant/variant.h"
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#include "Jolt/Core/Memory.h"
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namespace {
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template <typename TValue, typename TAlignment>
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constexpr TValue align_up(TValue p_value, TAlignment p_alignment) {
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return (p_value + p_alignment - 1) & ~(p_alignment - 1);
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}
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} //namespace
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JoltTempAllocator::JoltTempAllocator() :
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capacity((uint64_t)JoltProjectSettings::get_temp_memory_b()),
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base(static_cast<uint8_t *>(JPH::Allocate((size_t)capacity))) {
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}
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JoltTempAllocator::~JoltTempAllocator() {
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JPH::Free(base);
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}
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void *JoltTempAllocator::Allocate(uint32_t p_size) {
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if (p_size == 0) {
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return nullptr;
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}
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p_size = align_up(p_size, 16U);
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const uint64_t new_top = top + p_size;
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void *ptr = nullptr;
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if (new_top <= capacity) {
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ptr = base + top;
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} else {
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WARN_PRINT_ONCE(vformat("Jolt Physics temporary memory allocator exceeded capacity of %d MiB. "
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"Falling back to slower general-purpose allocator. "
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"Consider increasing maximum temporary memory in project settings.",
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JoltProjectSettings::get_temp_memory_mib()));
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ptr = JPH::Allocate(p_size);
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}
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top = new_top;
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return ptr;
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}
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void JoltTempAllocator::Free(void *p_ptr, uint32_t p_size) {
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if (p_ptr == nullptr) {
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return;
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}
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p_size = align_up(p_size, 16U);
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const uint64_t new_top = top - p_size;
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if (top <= capacity) {
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if (base + new_top != p_ptr) {
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CRASH_NOW_MSG("Jolt Physics temporary memory was freed in the wrong order.");
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}
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} else {
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JPH::Free(p_ptr);
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}
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top = new_top;
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}
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