summaryrefslogtreecommitdiff
path: root/include/malloc.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/malloc.h')
-rw-r--r--include/malloc.h245
1 files changed, 235 insertions, 10 deletions
diff --git a/include/malloc.h b/include/malloc.h
index 7ef63d8c7..8accd6469 100644
--- a/include/malloc.h
+++ b/include/malloc.h
@@ -1,18 +1,243 @@
+/* Prototypes and definition for malloc implementation.
+ Copyright (C) 1996, 1997, 1999, 2000 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _MALLOC_H
+#define _MALLOC_H 1
-#ifndef __MALLOC_H
-#define __MALLOC_H
#include <features.h>
-#include <sys/types.h>
-__BEGIN_DECLS
+/*
+ `ptmalloc', a malloc implementation for multiple threads without
+ lock contention, by Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>.
+ See the files `ptmalloc.c' or `COPYRIGHT' for copying conditions.
+
+ VERSION 2.6.4-pt Wed Dec 4 00:35:54 MET 1996
+
+ This work is mainly derived from malloc-2.6.4 by Doug Lea
+ <dl@cs.oswego.edu>, which is available from:
+
+ ftp://g.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
+ `ptmalloc.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
+
+#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
-extern void free __P((void *));
-extern void *malloc __P((size_t));
-extern void *realloc __P((void *, size_t));
-extern void *alloca __P((size_t));
+#else /* Not GCC. */
-extern void *(*__alloca_alloc) __P((size_t));
+# define __THROW
-__END_DECLS
+# 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
+#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;
+
+/* Initialize global configuration. Not needed with GNU libc. */
+#ifndef __GLIBC__
+extern void ptmalloc_init __MALLOC_P ((void));
+#endif
+
+/* Allocate SIZE bytes of memory. */
+extern __malloc_ptr_t malloc __MALLOC_P ((size_t __size)) __attribute_malloc__;
+
+/* 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__;
+
+/* 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__;
+
+/* Free a block allocated by `malloc', `realloc' or `calloc'. */
+extern void free __MALLOC_P ((__malloc_ptr_t __ptr));
+
+/* Free a block allocated by `calloc'. */
+extern void cfree __MALLOC_P ((__malloc_ptr_t __ptr));
+
+/* Allocate SIZE bytes allocated to ALIGNMENT bytes. */
+extern __malloc_ptr_t memalign __MALLOC_P ((size_t __alignment, size_t __size));
+
+/* Allocate SIZE bytes on a page boundary. */
+extern __malloc_ptr_t valloc __MALLOC_P ((size_t __size)) __attribute_malloc__;
+
+/* 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__;
+
+/* Underlying allocation function; successive calls should return
+ contiguous pieces of memory. */
+extern __malloc_ptr_t (*__morecore) __MALLOC_PMT ((ptrdiff_t __size));
+
+/* Default value of `__morecore'. */
+extern __malloc_ptr_t __default_morecore __MALLOC_P ((ptrdiff_t __size))
+ __attribute_malloc__;
+
+/* SVID2/XPG mallinfo structure */
+struct mallinfo {
+ int arena; /* total space allocated from system */
+ int ordblks; /* number of non-inuse chunks */
+ int smblks; /* unused -- always zero */
+ int hblks; /* number of mmapped regions */
+ int hblkhd; /* total space in mmapped regions */
+ int usmblks; /* unused -- always zero */
+ int fsmblks; /* unused -- always zero */
+ int uordblks; /* total allocated space */
+ int fordblks; /* total non-inuse space */
+ int keepcost; /* top-most, releasable (via malloc_trim) space */
+};
+
+/* Returns a copy of the updated current mallinfo. */
+extern struct mallinfo mallinfo __MALLOC_P ((void));
+
+/* SVID2/XPG mallopt options */
+#ifndef M_MXFAST
+# define M_MXFAST 1 /* UNUSED in this malloc */
+#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
+
+/* General SVID/XPG interface to tunable parameters. */
+extern int mallopt __MALLOC_P ((int __param, int __val));
+
+/* 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));
+
+/* Report the number of usable allocated bytes associated with allocated
+ chunk __ptr. */
+extern size_t malloc_usable_size __MALLOC_P ((__malloc_ptr_t __ptr));
+
+/* Prints brief summary statistics on stderr. */
+extern void malloc_stats __MALLOC_P ((void));
+
+/* Record the state of all malloc variables in an opaque data structure. */
+extern __malloc_ptr_t malloc_get_state __MALLOC_P ((void));
+
+/* 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));
+
+#if defined __GLIBC__ || defined MALLOC_HOOKS
+/* 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));
+/* 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));
+
+/* Activate a standard set of debugging hooks. */
+extern void __malloc_check_init __MALLOC_P ((void));
+#endif
+
+#ifdef __cplusplus
+}; /* end of extern "C" */
+#endif
+
+#endif /* malloc.h */