--- /dev/null
+++ libmalloc/libmalloc-283.60.1/src/nano_malloc_common.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2018 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 __NANO_MALLOC_COMMON_H
+#define __NANO_MALLOC_COMMON_H
+
+// Definitions that are common to Nano V1 and Nano V2.
+#if TARGET_OS_OSX || TARGET_OS_SIMULATOR || TARGET_OS_DRIVERKIT
+#define NANO_PREALLOCATE_BAND_VM 0
+#else // TARGET_OS_OSX || TARGET_OS_SIMULATOR || TARGET_OS_DRIVERKIT
+#define NANO_PREALLOCATE_BAND_VM 1 // pre-allocate reserved vm range
+#endif // TARGET_OS_OSX || TARGET_OS_SIMULATOR || TARGET_OS_DRIVERKIT
+
+typedef enum {
+	NANO_NONE	= 0,
+	NANO_V1 	= 1,
+	NANO_V2		= 2,
+} nano_version_t;
+
+// Nano malloc enabled flag
+MALLOC_NOEXPORT
+extern nano_version_t _malloc_engaged_nano;
+
+// The maximum number of per-CPU allocation regions to use for Nano.
+MALLOC_NOEXPORT
+extern unsigned int nano_common_max_magazines;
+
+MALLOC_NOEXPORT
+extern boolean_t nano_common_max_magazines_is_ncpu;
+
+MALLOC_NOEXPORT
+void
+nano_common_cpu_number_override_set(void);
+
+MALLOC_NOEXPORT
+void
+nano_common_init(const char *envp[], const char *apple[], const char *bootargs);
+
+MALLOC_NOEXPORT
+void
+nano_common_configure(void);
+
+MALLOC_NOEXPORT
+void *
+nano_common_allocate_based_pages(size_t size, unsigned char align,
+		unsigned debug_flags, int vm_page_label, void *base_addr);
+
+MALLOC_NOEXPORT
+boolean_t
+nano_common_allocate_vm_space(mach_vm_address_t base, mach_vm_size_t size);
+
+MALLOC_NOEXPORT
+void
+nano_common_deallocate_pages(void *addr, size_t size, unsigned debug_flags);
+
+MALLOC_NOEXPORT
+kern_return_t
+nano_common_default_reader(task_t task, vm_address_t address, vm_size_t size,
+		void **ptr);
+
+#endif // __NANO_MALLOC_COMMON_H
+