Add Chromium-only Blender WebEngine parity work

blender-5.2.0/intern/cycles/util/aligned_malloc.cpp

@@ -0,0 +1,73 @@
+/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
+ *
+ * SPDX-License-Identifier: Apache-2.0 */
+
+#include "util/aligned_malloc.h"
+#include "util/guarded_allocator.h"
+
+#ifdef WITH_BLENDER_GUARDEDALLOC
+#  include "../../guardedalloc/MEM_guardedalloc.h"
+#endif
+
+#include <cassert>
+
+/* Adopted from Libmv. */
+
+#if !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__NetBSD__) && !defined(__OpenBSD__)
+/* Needed for memalign on Linux and _aligned_alloc on Windows. */
+#  ifdef FREE_WINDOWS
+/* Make sure _aligned_malloc is included. */
+#    ifdef __MSVCRT_VERSION__
+#      undef __MSVCRT_VERSION__
+#    endif
+#    define __MSVCRT_VERSION__ 0x0700
+#  endif /* FREE_WINDOWS */
+#  include <malloc.h>
+#else
+/* Apple's `malloc` is 16-byte aligned, and does not have `malloc.h`, so include
+ * `stdilb` instead.
+ */
+#  include <cstdlib>
+#endif
+
+CCL_NAMESPACE_BEGIN
+
+void *util_aligned_malloc(const size_t size, const int alignment)
+{
+  void *mem = nullptr;
+#ifdef WITH_BLENDER_GUARDEDALLOC
+  mem = MEM_new_uninitialized_aligned(size, alignment, "Cycles Aligned Alloc");
+#elif defined(_WIN32)
+  mem = _aligned_malloc(size, alignment);
+#elif defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+  if (posix_memalign(&mem, alignment, size)) {
+    /* Non-zero means allocation error
+     * either no allocation or bad alignment value. */
+    mem = nullptr;
+  }
+#else /* This is for Linux. */
+  mem = memalign(alignment, size);
+#endif
+  if (mem) {
+    util_guarded_mem_alloc(size);
+  }
+  return mem;
+}
+
+void util_aligned_free(void *ptr, const size_t size)
+{
+  if (ptr) {
+    util_guarded_mem_free(size);
+  }
+#if defined(WITH_BLENDER_GUARDEDALLOC)
+  if (ptr != nullptr) {
+    MEM_delete_void(ptr);
+  }
+#elif defined(_WIN32)
+  _aligned_free(ptr);
+#else
+  free(ptr);
+#endif
+}
+
+CCL_NAMESPACE_END