--- /dev/null
+++ libmalloc/libmalloc-116.30.3/src/base.h
@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2015 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#ifndef __BASE_H
+#define __BASE_H
+
+#ifndef __has_extension
+#define __has_extension(x) 0
+#endif
+
+#if __has_extension(c_static_assert)
+#define MALLOC_STATIC_ASSERT(x, y) _Static_assert((x), y)
+#else
+#define MALLOC_STATIC_ASSERT(x, y)
+#endif
+
+#define MALLOC_ASSERT(e) ({ \
+	if (__builtin_expect(!(e), 0)) { \
+		__asm__ __volatile__ (""); \
+		__builtin_trap(); \
+	} \
+})
+
+#define MALLOC_FATAL_ERROR(cause, message) ({ \
+		_os_set_crash_log_cause_and_message((cause), "FATAL ERROR - " message); \
+		__asm__ __volatile__ (""); \
+		__builtin_trap(); \
+})
+
+#define MALLOC_PRINTF_FATAL_ERROR(cause, message) ({ \
+		malloc_printf("*** FATAL ERROR - " message ".\n"); \
+		MALLOC_FATAL_ERROR((cause), message); \
+})
+
+#if defined(__i386__) || defined(__x86_64__) || defined(__arm__) || defined(__arm64__)
+#   define __APPLE_API_PRIVATE
+#   include <machine/cpu_capabilities.h>
+#   define _COMM_PAGE_VERSION_REQD 9
+#   undef __APPLE_API_PRIVATE
+#else
+#   include <sys/sysctl.h>
+#endif
+
+#if defined(__i386__) || defined(__x86_64__)
+// <rdar://problem/23495834> nano vs. magazine have different definitions
+// for this cache-line size.
+#   define MALLOC_CACHE_LINE 128
+#   define MALLOC_NANO_CACHE_LINE 64
+#elif defined(__arm__) || defined(__arm64__)
+#   define MALLOC_CACHE_LINE 64
+#   define MALLOC_NANO_CACHE_LINE 64
+#else
+#   define MALLOC_CACHE_LINE 32
+#   define MALLOC_NANO_CACHE_LINE 32
+#endif
+
+#define MALLOC_CACHE_ALIGN __attribute__ ((aligned (MALLOC_CACHE_LINE) ))
+#define MALLOC_NANO_CACHE_ALIGN __attribute__ ((aligned (MALLOC_NANO_CACHE_LINE) ))
+#define MALLOC_EXPORT extern __attribute__((visibility("default")))
+#define MALLOC_NOEXPORT __attribute__((visibility("hidden")))
+#define MALLOC_NOINLINE __attribute__((noinline))
+#define MALLOC_INLINE __inline__
+#define MALLOC_ALWAYS_INLINE __attribute__((always_inline))
+#define MALLOC_PACKED __attribute__((packed))
+#define MALLOC_USED __attribute__((used))
+#define MALLOC_UNUSED __attribute__((unused))
+#define CHECK_MAGAZINE_PTR_LOCKED(szone, mag_ptr, fun) {}
+
+#define SCRIBBLE_BYTE 0xaa /* allocated scribble */
+#define SCRABBLE_BYTE 0x55 /* free()'d scribble */
+#define SCRUBBLE_BYTE 0xdd /* madvise(..., MADV_FREE) scriblle */
+
+#define NDEBUG 1
+#define trunc_page_quanta(x) trunc_page((x))
+#define round_page_quanta(x) round_page((x))
+#define vm_page_quanta_size (vm_page_size)
+#define vm_page_quanta_shift (vm_page_shift)
+
+// add a guard page before and after each VM region to help debug
+#define MALLOC_ADD_GUARD_PAGES (1 << 0)
+// do not protect prelude page
+#define MALLOC_DONT_PROTECT_PRELUDE (1 << 1)
+// do not protect postlude page
+#define MALLOC_DONT_PROTECT_POSTLUDE (1 << 2)
+// write 0x55 onto free blocks
+#define MALLOC_DO_SCRIBBLE (1 << 3)
+// call abort() on any malloc error, such as double free or out of memory.
+#define MALLOC_ABORT_ON_ERROR (1 << 4)
+// allocate objects such that they may be used with VM purgability APIs
+#define MALLOC_PURGEABLE (1 << 5)
+// call abort() on malloc errors, but not on out of memory.
+#define MALLOC_ABORT_ON_CORRUPTION (1 << 6)
+
+/*
+ * msize - a type to refer to the number of quanta of a tiny or small
+ * allocation.  A tiny block with an msize of 3 would be 3 << SHIFT_TINY_QUANTUM
+ * bytes in size.
+ */
+typedef unsigned short msize_t;
+
+typedef unsigned int grain_t; // N.B. wide enough to index all free slots
+typedef struct large_entry_s large_entry_t;
+typedef struct szone_s szone_t;
+typedef struct magazine_s magazine_t;
+typedef int mag_index_t;
+typedef void *region_t;
+
+#endif // __BASE_H