1 files changed, 64 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/common/aligned_memory.cpp b/gfx/angle/checkout/src/common/aligned_memory.cpp
new file mode 100644
index 0000000000..9798fc0f42
--- /dev/null
+++ b/gfx/angle/checkout/src/common/aligned_memory.cpp
@@ -0,0 +1,64 @@
+//
+// Copyright 2017 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// aligned_memory: An aligned memory allocator. Based on Chrome's base/memory/aligned_memory.
+//
+
+#include "common/aligned_memory.h"
+
+#include "common/debug.h"
+#include "common/platform.h"
+
+#if defined(COMPILER_MSVC)
+#    include <malloc.h>
+#else
+#    include <stdlib.h>
+#endif
+
+namespace angle
+{
+
+void *AlignedAlloc(size_t size, size_t alignment)
+{
+    ASSERT(size > 0);
+    ASSERT((alignment & (alignment - 1)) == 0);
+    ASSERT((alignment % sizeof(void *)) == 0);
+    void *ptr = nullptr;
+#if defined(ANGLE_PLATFORM_WINDOWS)
+    ptr = _aligned_malloc(size, alignment);
+// Android technically supports posix_memalign(), but does not expose it in
+// the current version of the library headers used by Chrome.  Luckily,
+// memalign() on Android returns pointers which can safely be used with
+// free(), so we can use it instead.  Issue filed to document this:
+// http://code.google.com/p/android/issues/detail?id=35391
+#elif defined(ANGLE_PLATFORM_ANDROID)
+    ptr = memalign(alignment, size);
+#else
+    if (posix_memalign(&ptr, alignment, size))
+        ptr = nullptr;
+#endif
+    // Since aligned allocations may fail for non-memory related reasons, force a
+    // crash if we encounter a failed allocation.
+    if (!ptr)
+    {
+        ERR() << "If you crashed here, your aligned allocation is incorrect: "
+              << "size=" << size << ", alignment=" << alignment;
+        ASSERT(false);
+    }
+    // Confidence check alignment just to be safe.
+    ASSERT((reinterpret_cast<uintptr_t>(ptr) & (alignment - 1)) == 0);
+    return ptr;
+}
+
+void AlignedFree(void *ptr)
+{
+#if defined(ANGLE_PLATFORM_WINDOWS)
+    _aligned_free(ptr);
+#else
+    free(ptr);
+#endif
+}
+
+}  // namespace angle