Rewrite SamplingCircularQueue

src/allocation.h

Index: src/allocation.h
diff --git a/src/allocation.h b/src/allocation.h
index 45bde4c4cb07068a05e301d2124990637d82609d..09344f9187482b120bf6f5c44f1f717ad872513c 100644
--- a/src/allocation.h
+++ b/src/allocation.h
@@ -30,6 +30,19 @@
 
 #include "globals.h"
 
+/* Round up n to be a multiple of sz, where sz is a power of 2. */
+#define ROUND_UP(n, sz) (((n) + ((sz) - 1)) & ~((sz) - 1))
+
+// Specify memory alignment for structs, classes, etc.
+// Use like:
+//   class ALIGN_AT(16) MyClass { ... }
+//   ALIGNAS(16) int array[4];

[Benedikt Meurer, 2013/08/13 14:29:42]

Typo: ALIGN_AT

[yurys, 2013/08/13 14:52:37]

Done.

+#if defined(_MSC_VER)
+#define ALIGN_AT(byte_alignment) __declspec(align(byte_alignment))
+#elif defined(__GNUC__)
+#define ALIGN_AT(byte_alignment) __attribute__((aligned(byte_alignment)))
+#endif

[Benedikt Meurer, 2013/08/13 14:29:42]

Missing #else for other compilers.

[yurys, 2013/08/13 14:52:37]

Done. Added #error for other compilers.

+
 namespace v8 {
 namespace internal {