--- /dev/null
+++ libmalloc/libmalloc-166.220.1/private/malloc_private.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 1999-2016 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 _MALLOC_PRIVATE_H_
+#define _MALLOC_PRIVATE_H_
+
+/* Here be dragons (SPIs) */
+
+#include <mach/boolean.h>
+#include <sys/cdefs.h>
+#include <Availability.h>
+#include <os/availability.h>
+#include <malloc/malloc.h>
+
+/*********	Callbacks	************/
+
+API_AVAILABLE(macos(10.12), ios(10.0), tvos(10.0), watchos(3.0))
+void malloc_enter_process_memory_limit_warn_mode(void);
+	/* A callback invoked once the process receives a warning for approaching
+	 * memory limit. */
+
+__OSX_AVAILABLE(10.12) __IOS_AVAILABLE(10.0)
+__TVOS_AVAILABLE(10.0) __WATCHOS_AVAILABLE(3.0)
+void malloc_memory_event_handler(unsigned long);
+	/* A function invoked when malloc needs to handle any flavor of
+	 * memory pressure notification or process memory limit notification. */
+
+API_AVAILABLE(macos(10.12), ios(10.0), tvos(10.0), watchos(3.0))
+void * reallocarray(void * in_ptr, size_t nmemb, size_t size) __DARWIN_EXTSN(reallocarray) __result_use_check;
+
+API_AVAILABLE(macos(10.12), ios(10.0), tvos(10.0), watchos(3.0))
+void * reallocarrayf(void * in_ptr, size_t nmemb, size_t size) __DARWIN_EXTSN(reallocarrayf) __result_use_check;
+
+/*
+ * Checks whether an address might belong to any registered zone. False positives
+ * are allowed (e.g. the memory was freed, or it's in a part of the address
+ * space used by malloc that has not yet been allocated.) False negatives are
+ * not allowed.
+ */
+API_AVAILABLE(macos(10.14), ios(12.0), tvos(12.0), watchos(5.0))
+boolean_t malloc_claimed_address(void *ptr) __result_use_check;
+
+/*
+ * Checks whether an address might belong to a given zone. False positives are
+ * allowed (e.g. the memory was freed, or it's in a part of the address space
+ * used by malloc that has not yet been allocated.) False negatives are not
+ * allowed.
+ */
+API_AVAILABLE(macos(10.14), ios(12.0), tvos(12.0), watchos(5.0))
+boolean_t malloc_zone_claimed_address(malloc_zone_t *zone, void *ptr) __result_use_check;
+
+/**
+ * Returns whether the nano allocator is engaged. The return value is 0 if Nano
+ * is not engaged and the allocator version otherwise.
+ */
+API_AVAILABLE(macos(10.14), ios(12.0), tvos(12.0), watchos(5.0))
+int malloc_engaged_nano(void) __result_use_check;
+
+#endif /* _MALLOC_PRIVATE_H_ */