--- /dev/null
+/* Prototypes and definition for malloc implementation.
+ Copyright (C) 1996-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _MALLOC_H
+#define _MALLOC_H 1
+
+#include <features.h>
+#include <stddef.h>
+#include <stdio.h>
+
+#ifdef _LIBC
+# define __MALLOC_HOOK_VOLATILE
+# define __MALLOC_DEPRECATED
+#else
+# define __MALLOC_HOOK_VOLATILE volatile
+# define __MALLOC_DEPRECATED __attribute_deprecated__
+#endif
+
+
+__BEGIN_DECLS
+
+/* Allocate SIZE bytes of memory. */
+extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur;
+
+/* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */
+extern void *calloc (size_t __nmemb, size_t __size)
+__THROW __attribute_malloc__ __wur;
+
+/* Re-allocate the previously allocated block in __ptr, making the new
+ block SIZE bytes long. */
+/* __attribute_malloc__ is not used, because if realloc returns
+ the same pointer that was passed to it, aliasing needs to be allowed
+ between objects pointed by the old and new pointers. */
+extern void *realloc (void *__ptr, size_t __size)
+__THROW __attribute_warn_unused_result__;
+
+/* Re-allocate the previously allocated block in PTR, making the new
+ block large enough for NMEMB elements of SIZE bytes each. */
+/* __attribute_malloc__ is not used, because if reallocarray returns
+ the same pointer that was passed to it, aliasing needs to be allowed
+ between objects pointed by the old and new pointers. */
+extern void *reallocarray (void *__ptr, size_t __nmemb, size_t __size)
+__THROW __attribute_warn_unused_result__;
+
+/* Free a block allocated by `malloc', `realloc' or `calloc'. */
+extern void free (void *__ptr) __THROW;
+
+/* Allocate SIZE bytes allocated to ALIGNMENT bytes. */
+extern void *memalign (size_t __alignment, size_t __size)
+__THROW __attribute_malloc__ __wur;
+
+/* Allocate SIZE bytes on a page boundary. */
+extern void *valloc (size_t __size) __THROW __attribute_malloc__ __wur;
+
+/* Equivalent to valloc(minimum-page-that-holds(n)), that is, round up
+ __size to nearest pagesize. */
+extern void *pvalloc (size_t __size) __THROW __attribute_malloc__ __wur;
+
+/* Underlying allocation function; successive calls should return
+ contiguous pieces of memory. */
+extern void *(*__morecore) (ptrdiff_t __size);
+
+/* Default value of `__morecore'. */
+extern void *__default_morecore (ptrdiff_t __size)
+__THROW __attribute_malloc__;
+
+/* SVID2/XPG mallinfo structure */
+
+struct mallinfo
+{
+ int arena; /* non-mmapped space allocated from system */
+ int ordblks; /* number of free chunks */
+ int smblks; /* number of fastbin blocks */
+ int hblks; /* number of mmapped regions */
+ int hblkhd; /* space in mmapped regions */
+ int usmblks; /* always 0, preserved for backwards compatibility */
+ int fsmblks; /* space available in freed fastbin blocks */
+ int uordblks; /* total allocated space */
+ int fordblks; /* total free space */
+ int keepcost; /* top-most, releasable (via malloc_trim) space */
+};
+
+/* Returns a copy of the updated current mallinfo. */
+extern struct mallinfo mallinfo (void) __THROW;
+
+/* SVID2/XPG mallopt options */
+#ifndef M_MXFAST
+# define M_MXFAST 1 /* maximum request size for "fastbins" */
+#endif
+#ifndef M_NLBLKS
+# define M_NLBLKS 2 /* UNUSED in this malloc */
+#endif
+#ifndef M_GRAIN
+# define M_GRAIN 3 /* UNUSED in this malloc */
+#endif
+#ifndef M_KEEP
+# define M_KEEP 4 /* UNUSED in this malloc */
+#endif
+
+/* mallopt options that actually do something */
+#define M_TRIM_THRESHOLD -1
+#define M_TOP_PAD -2
+#define M_MMAP_THRESHOLD -3
+#define M_MMAP_MAX -4
+#define M_CHECK_ACTION -5
+#define M_PERTURB -6
+#define M_ARENA_TEST -7
+#define M_ARENA_MAX -8
+
+/* General SVID/XPG interface to tunable parameters. */
+extern int mallopt (int __param, int __val) __THROW;
+
+/* Release all but __pad bytes of freed top-most memory back to the
+ system. Return 1 if successful, else 0. */
+extern int malloc_trim (size_t __pad) __THROW;
+
+/* Report the number of usable allocated bytes associated with allocated
+ chunk __ptr. */
+extern size_t malloc_usable_size (void *__ptr) __THROW;
+
+/* Prints brief summary statistics on stderr. */
+extern void malloc_stats (void) __THROW;
+
+/* Output information about state of allocator to stream FP. */
+extern int malloc_info (int __options, FILE *__fp) __THROW;
+
+/* Hooks for debugging and user-defined versions. */
+extern void (*__MALLOC_HOOK_VOLATILE __free_hook) (void *__ptr,
+ const void *)
+__MALLOC_DEPRECATED;
+extern void *(*__MALLOC_HOOK_VOLATILE __malloc_hook)(size_t __size,
+ const void *)
+__MALLOC_DEPRECATED;
+extern void *(*__MALLOC_HOOK_VOLATILE __realloc_hook)(void *__ptr,
+ size_t __size,
+ const void *)
+__MALLOC_DEPRECATED;
+extern void *(*__MALLOC_HOOK_VOLATILE __memalign_hook)(size_t __alignment,
+ size_t __size,
+ const void *)
+__MALLOC_DEPRECATED;
+extern void (*__MALLOC_HOOK_VOLATILE __after_morecore_hook) (void);
+
+/* Activate a standard set of debugging hooks. */
+extern void __malloc_check_init (void) __THROW __MALLOC_DEPRECATED;
+
+
+__END_DECLS
+#endif /* malloc.h */
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