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diff --git a/include/cutils/mspace.h b/include/cutils/mspace.h
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+++ b/include/cutils/mspace.h
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+/*
+ * Copyright (C) 2006 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* A wrapper file for dlmalloc.h that defines prototypes for the
+ * mspace_*() functions, which provide an interface for creating
+ * multiple heaps.
+ */
+
+#ifndef MSPACE_H_
+#define MSPACE_H_
+
+/* It's a pain getting the mallinfo stuff to work
+ * with Linux, OSX, and klibc, so just turn it off
+ * for now.
+ * TODO: make mallinfo work
+ */
+#define NO_MALLINFO 1
+
+/* Allow setting the maximum heap footprint.
+ */
+#define USE_MAX_ALLOWED_FOOTPRINT 1
+
+#define USE_CONTIGUOUS_MSPACES 1
+#if USE_CONTIGUOUS_MSPACES
+#define HAVE_MMAP 0
+#define HAVE_MORECORE 1
+#define MORECORE_CONTIGUOUS 0
+#endif
+
+#define MSPACES 1
+#define ONLY_MSPACES 1
+#include "../../../../bionic/libc/bionic/dlmalloc.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+  mspace_usable_size(void* p);
+
+  Returns the number of bytes you can actually use in
+  an allocated chunk, which may be more than you requested (although
+  often not) due to alignment and minimum size constraints.
+  You can use this many bytes without worrying about
+  overwriting other allocated objects. This is not a particularly great
+  programming practice. mspace_usable_size can be more useful in
+  debugging and assertions, for example:
+
+  p = mspace_malloc(msp, n);
+  assert(mspace_usable_size(msp, p) >= 256);
+*/
+size_t mspace_usable_size(mspace, const void*);
+
+#if USE_CONTIGUOUS_MSPACES
+/*
+  Similar to create_mspace(), but the underlying memory is
+  guaranteed to be contiguous.  No more than max_capacity
+  bytes is ever allocated to the mspace.
+ */
+mspace create_contiguous_mspace(size_t starting_capacity, size_t max_capacity,
+    int locked);
+
+/*
+   Identical to create_contiguous_mspace, but labels the mapping 'mspace/name'
+   instead of 'mspace'
+*/
+mspace create_contiguous_mspace_with_name(size_t starting_capacity,
+    size_t max_capacity, int locked, const char *name);
+
+/*
+   Identical to create_contiguous_mspace, but uses previously mapped memory.
+*/
+mspace create_contiguous_mspace_with_base(size_t starting_capacity,
+    size_t max_capacity, int locked, void *base);
+
+size_t destroy_contiguous_mspace(mspace msp);
+
+/*
+   Returns the position of the "break" within the given mspace.
+*/
+void *contiguous_mspace_sbrk0(mspace msp);
+#endif
+
+/*
+  Call the handler for each block in the specified mspace.
+  chunkptr and chunklen refer to the heap-level chunk including
+  the chunk overhead, and userptr and userlen refer to the
+  user-usable part of the chunk.  If the chunk is free, userptr
+  will be NULL and userlen will be 0.  userlen is not guaranteed
+  to be the same value passed into malloc() for a given chunk;
+  it is >= the requested size.
+ */
+void mspace_walk_heap(mspace msp,
+    void(*handler)(const void *chunkptr, size_t chunklen,
+        const void *userptr, size_t userlen, void *arg), void *harg);
+
+/*
+  mspace_walk_free_pages(handler, harg)
+
+  Calls the provided handler on each free region in the specified
+  mspace.  The memory between start and end are guaranteed not to
+  contain any important data, so the handler is free to alter the
+  contents in any way.  This can be used to advise the OS that large
+  free regions may be swapped out.
+
+  The value in harg will be passed to each call of the handler.
+ */
+void mspace_walk_free_pages(mspace msp,
+    void(*handler)(void *start, void *end, void *arg), void *harg);
+
+#ifdef __cplusplus
+};  /* end of extern "C" */
+#endif
+
+#endif /* MSPACE_H_ */