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);
+}