/* Prototypes and definition for malloc implementation.
- Copyright (C) 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1996-2015 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
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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
#ifndef _MALLOC_H
#define _MALLOC_H 1
-#ifdef _LIBC
#include <features.h>
-#endif
-
-/*
- $Id$
- `ptmalloc2', a malloc implementation for multiple threads without
- lock contention, by Wolfram Gloger <wg@malloc.de>.
-
- VERSION 2.7.0
-
- This work is mainly derived from malloc-2.7.0 by Doug Lea
- <dl@cs.oswego.edu>, which is available from:
-
- ftp://gee.cs.oswego.edu/pub/misc/malloc.c
-
- This trimmed-down header file only provides function prototypes and
- the exported data structures. For more detailed function
- descriptions and compile-time options, see the source file
- `malloc.c'.
-*/
-
-#if defined(__STDC__) || defined (__cplusplus)
-# include <stddef.h>
-# define __malloc_ptr_t void *
-#else
-# undef size_t
-# define size_t unsigned int
-# undef ptrdiff_t
-# define ptrdiff_t int
-# define __malloc_ptr_t char *
-#endif
+#include <stddef.h>
+#include <stdio.h>
#ifdef _LIBC
-/* Used by GNU libc internals. */
-# define __malloc_size_t size_t
-# define __malloc_ptrdiff_t ptrdiff_t
-#elif !defined __attribute_malloc__
-# define __attribute_malloc__
-#endif
-
-#ifdef __GNUC__
-
-/* GCC can always grok prototypes. For C++ programs we add throw()
- to help it optimize the function calls. But this works only with
- gcc 2.8.x and egcs. */
-# if defined __cplusplus && (__GNUC__ >= 3 || __GNUC_MINOR__ >= 8)
-# define __THROW throw ()
-# else
-# define __THROW
-# endif
-# define __MALLOC_P(args) args __THROW
-/* This macro will be used for functions which might take C++ callback
- functions. */
-# define __MALLOC_PMT(args) args
-
-#else /* Not GCC. */
-
-# define __THROW
-
-# if (defined __STDC__ && __STDC__) || defined __cplusplus
-
-# define __MALLOC_P(args) args
-# define __MALLOC_PMT(args) args
-
-# else /* Not ANSI C or C++. */
-
-# define __MALLOC_P(args) () /* No prototypes. */
-# define __MALLOC_PMT(args) ()
-
-# endif /* ANSI C or C++. */
-
-#endif /* GCC. */
-
-#ifndef NULL
-# ifdef __cplusplus
-# define NULL 0
-# else
-# define NULL ((__malloc_ptr_t) 0)
-# endif
+# define __MALLOC_HOOK_VOLATILE
+# define __MALLOC_DEPRECATED
+#else
+# define __MALLOC_HOOK_VOLATILE volatile
+# define __MALLOC_DEPRECATED __attribute_deprecated__
#endif
-#ifdef __cplusplus
-extern "C" {
-#endif
-/* Nonzero if the malloc is already initialized. */
-#ifdef _LIBC
-/* In the GNU libc we rename the global variable
- `__malloc_initialized' to `__libc_malloc_initialized'. */
-# define __malloc_initialized __libc_malloc_initialized
-#endif
-extern int __malloc_initialized;
+__BEGIN_DECLS
/* Allocate SIZE bytes of memory. */
-extern __malloc_ptr_t malloc __MALLOC_P ((size_t __size)) __attribute_malloc__;
+extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur;
/* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */
-extern __malloc_ptr_t calloc __MALLOC_P ((size_t __nmemb, size_t __size))
- __attribute_malloc__;
+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. */
-extern __malloc_ptr_t realloc __MALLOC_P ((__malloc_ptr_t __ptr,
- size_t __size))
- __attribute_malloc__;
+/* __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__;
/* Free a block allocated by `malloc', `realloc' or `calloc'. */
-extern void free __MALLOC_P ((__malloc_ptr_t __ptr));
+extern void free (void *__ptr) __THROW;
/* Free a block allocated by `calloc'. */
-extern void cfree __MALLOC_P ((__malloc_ptr_t __ptr));
+extern void cfree (void *__ptr) __THROW;
/* Allocate SIZE bytes allocated to ALIGNMENT bytes. */
-extern __malloc_ptr_t memalign __MALLOC_P ((size_t __alignment, size_t __size));
+extern void *memalign (size_t __alignment, size_t __size)
+__THROW __attribute_malloc__ __wur;
/* Allocate SIZE bytes on a page boundary. */
-extern __malloc_ptr_t valloc __MALLOC_P ((size_t __size)) __attribute_malloc__;
+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 __malloc_ptr_t pvalloc __MALLOC_P ((size_t __size))
- __attribute_malloc__;
+extern void *pvalloc (size_t __size) __THROW __attribute_malloc__ __wur;
/* Underlying allocation function; successive calls should return
contiguous pieces of memory. */
-extern __malloc_ptr_t (*__morecore) __MALLOC_PMT ((ptrdiff_t __size));
+extern void *(*__morecore) (ptrdiff_t __size);
/* Default value of `__morecore'. */
-extern __malloc_ptr_t __default_morecore __MALLOC_P ((ptrdiff_t __size))
- __attribute_malloc__;
+extern void *__default_morecore (ptrdiff_t __size)
+__THROW __attribute_malloc__;
/* SVID2/XPG mallinfo structure */
-struct mallinfo {
+struct mallinfo
+{
int arena; /* non-mmapped space allocated from system */
int ordblks; /* number of free chunks */
int smblks; /* number of fastbin blocks */
};
/* Returns a copy of the updated current mallinfo. */
-extern struct mallinfo mallinfo __MALLOC_P ((void));
+extern struct mallinfo mallinfo (void) __THROW;
/* SVID2/XPG mallopt options */
#ifndef M_MXFAST
-# define M_MXFAST 1 /* maximum request size for "fastbins" */
+# define M_MXFAST 1 /* maximum request size for "fastbins" */
#endif
#ifndef M_NLBLKS
-# define M_NLBLKS 2 /* UNUSED in this malloc */
+# define M_NLBLKS 2 /* UNUSED in this malloc */
#endif
#ifndef M_GRAIN
-# define M_GRAIN 3 /* UNUSED in this malloc */
+# define M_GRAIN 3 /* UNUSED in this malloc */
#endif
#ifndef M_KEEP
-# define M_KEEP 4 /* UNUSED in this malloc */
+# define M_KEEP 4 /* UNUSED in this malloc */
#endif
/* mallopt options that actually do something */
#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 __MALLOC_P ((int __param, int __val));
+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 __MALLOC_P ((size_t __pad));
+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 __MALLOC_P ((__malloc_ptr_t __ptr));
+extern size_t malloc_usable_size (void *__ptr) __THROW;
/* Prints brief summary statistics on stderr. */
-extern void malloc_stats __MALLOC_P ((void));
+extern void malloc_stats (void) __THROW;
+
+/* Output information about state of allocator to stream FP. */
+extern int malloc_info (int __options, FILE *__fp) __THROW;
/* Record the state of all malloc variables in an opaque data structure. */
-extern __malloc_ptr_t malloc_get_state __MALLOC_P ((void));
+extern void *malloc_get_state (void) __THROW;
/* Restore the state of all malloc variables from data obtained with
malloc_get_state(). */
-extern int malloc_set_state __MALLOC_P ((__malloc_ptr_t __ptr));
+extern int malloc_set_state (void *__ptr) __THROW;
/* Called once when malloc is initialized; redefining this variable in
the application provides the preferred way to set up the hook
pointers. */
-extern void (*__malloc_initialize_hook) __MALLOC_PMT ((void));
+extern void (*__MALLOC_HOOK_VOLATILE __malloc_initialize_hook) (void)
+__MALLOC_DEPRECATED;
/* Hooks for debugging and user-defined versions. */
-extern void (*__free_hook) __MALLOC_PMT ((__malloc_ptr_t __ptr,
- __const __malloc_ptr_t));
-extern __malloc_ptr_t (*__malloc_hook) __MALLOC_PMT ((size_t __size,
- __const __malloc_ptr_t));
-extern __malloc_ptr_t (*__realloc_hook) __MALLOC_PMT ((__malloc_ptr_t __ptr,
- size_t __size,
- __const __malloc_ptr_t));
-extern __malloc_ptr_t (*__memalign_hook) __MALLOC_PMT ((size_t __alignment,
- size_t __size,
- __const __malloc_ptr_t));
-extern void (*__after_morecore_hook) __MALLOC_PMT ((void));
+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 __MALLOC_P ((void));
-
-/* Internal routines, operating on "arenas". */
-struct malloc_state;
-typedef struct malloc_state *mstate;
-
-extern mstate _int_new_arena __MALLOC_P ((size_t __ini_size));
-extern __malloc_ptr_t _int_malloc __MALLOC_P ((mstate __m, size_t __size));
-extern void _int_free __MALLOC_P ((mstate __m, __malloc_ptr_t __ptr));
-extern __malloc_ptr_t _int_realloc __MALLOC_P ((mstate __m,
- __malloc_ptr_t __ptr,
- size_t __size));
-extern __malloc_ptr_t _int_memalign __MALLOC_P ((mstate __m, size_t __alignment,
- size_t __size));
-
-#ifdef __cplusplus
-}; /* end of extern "C" */
-#endif
+extern void __malloc_check_init (void) __THROW __MALLOC_DEPRECATED;
+
+__END_DECLS
#endif /* malloc.h */
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