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Diffstat (limited to '')
-rw-r--r-- | src/VBox/Additions/3D/win/VBoxNine/nine/nine_memory_helper.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/src/VBox/Additions/3D/win/VBoxNine/nine/nine_memory_helper.c b/src/VBox/Additions/3D/win/VBoxNine/nine/nine_memory_helper.c new file mode 100644 index 00000000..9fe5c652 --- /dev/null +++ b/src/VBox/Additions/3D/win/VBoxNine/nine/nine_memory_helper.c @@ -0,0 +1,176 @@ +/* + * Copyright (C) 2016-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * SPDX-License-Identifier: GPL-3.0-only + */ + +/* + * Copyright 2020 Axel Davy <davyaxel0@gmail.com> + * + * 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 the Software without restriction, including without limitation + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * 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 A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN 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. */ + +#include "util/list.h" +#include "util/u_memory.h" +#include "util/slab.h" + +#include "nine_debug.h" +#include "nine_memory_helper.h" +#include "nine_state.h" + +#include <iprt/win/windows.h> + +#define DIVUP(a,b) (((a)+(b)-1)/(b)) + +/* Required alignment for allocations */ +#define NINE_ALLOCATION_ALIGNMENT 32 + +#define DBG_CHANNEL (DBG_BASETEXTURE|DBG_SURFACE|DBG_VOLUME|DBG_TEXTURE|DBG_CUBETEXTURE) + +struct nine_allocation { + unsigned is_external; + void *external; +}; + +struct nine_allocator { + struct slab_mempool external_allocation_pool; + CRITICAL_SECTION mutex_slab; +}; + +struct nine_allocation * +nine_allocate(struct nine_allocator *allocator, unsigned size) +{ + struct nine_allocation *allocation; + (void)allocator; + assert(sizeof(struct nine_allocation) <= NINE_ALLOCATION_ALIGNMENT); + allocation = align_calloc(size + NINE_ALLOCATION_ALIGNMENT, NINE_ALLOCATION_ALIGNMENT); + allocation->is_external = false; + return allocation; +} + + +void nine_free(struct nine_allocator *allocator, struct nine_allocation *allocation) +{ + if (allocation->is_external) { + EnterCriticalSection(&allocator->mutex_slab); + slab_free_st(&allocator->external_allocation_pool, allocation); + LeaveCriticalSection(&allocator->mutex_slab); + } else + align_free(allocation); +} + +void nine_free_worker(struct nine_allocator *allocator, struct nine_allocation *allocation) +{ + nine_free(allocator, allocation); +} + +void *nine_get_pointer(struct nine_allocator *allocator, struct nine_allocation *allocation) +{ + (void)allocator; + if (allocation->is_external) + return allocation->external; + return (uint8_t *)allocation + NINE_ALLOCATION_ALIGNMENT; +} + +void nine_pointer_weakrelease(struct nine_allocator *allocator, struct nine_allocation *allocation) +{ + (void)allocator; + (void)allocation; +} + +void nine_pointer_strongrelease(struct nine_allocator *allocator, struct nine_allocation *allocation) +{ + (void)allocator; + (void)allocation; +} + +void nine_pointer_delayedstrongrelease(struct nine_allocator *allocator, + struct nine_allocation *allocation, + unsigned *counter) +{ + (void)allocator; + (void)allocation; + (void)counter; +} + +struct nine_allocation * +nine_suballocate(struct nine_allocator* allocator, struct nine_allocation *allocation, int offset) +{ + struct nine_allocation *new_allocation; + EnterCriticalSection(&allocator->mutex_slab); + new_allocation = slab_alloc_st(&allocator->external_allocation_pool); + LeaveCriticalSection(&allocator->mutex_slab); + new_allocation->is_external = true; + if (allocation->is_external) + new_allocation->external = (uint8_t *)allocation->external + offset; + else + new_allocation->external = (uint8_t *)allocation + NINE_ALLOCATION_ALIGNMENT + offset; + return new_allocation; +} + +struct nine_allocation * +nine_wrap_external_pointer(struct nine_allocator* allocator, void* data) +{ + struct nine_allocation *new_allocation; + EnterCriticalSection(&allocator->mutex_slab); + new_allocation = slab_alloc_st(&allocator->external_allocation_pool); + LeaveCriticalSection(&allocator->mutex_slab); + new_allocation->is_external = true; + new_allocation->external = data; + return new_allocation; +} + +struct nine_allocator * +nine_allocator_create(struct NineDevice9 *device, int memfd_virtualsizelimit) +{ + struct nine_allocator* allocator = MALLOC(sizeof(struct nine_allocator)); + (void)device; + (void)memfd_virtualsizelimit; + + if (!allocator) + return NULL; + + slab_create(&allocator->external_allocation_pool, sizeof(struct nine_allocation), 4096); + InitializeCriticalSection(&allocator->mutex_slab); + + return allocator; +} + +void +nine_allocator_destroy(struct nine_allocator *allocator) +{ + slab_destroy(&allocator->external_allocation_pool); + DeleteCriticalSection(&allocator->mutex_slab); +} |