/* Prototypes and definition for malloc implementation.
- Copyright (C) 1996 Free Software Foundation, Inc.
+ 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
#ifndef _MALLOC_H
#define _MALLOC_H 1
+#include <features.h>
+
/*
`ptmalloc', a malloc implementation for multiple threads without
lock contention, by Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>.
*/
#if defined(__STDC__) || defined (__cplusplus)
-#include <stddef.h>
-#define __malloc_ptr_t void *
+# 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 *
+# 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
+# define __malloc_size_t size_t
+# define __malloc_ptrdiff_t ptrdiff_t
+#elif !defined __attribute_malloc__
+# define __attribute_malloc__
#endif
-#if defined (__STDC__) || defined (__cplusplus) || defined (__GNUC__)
-#define __MALLOC_P(args) args
-#else
-#define __MALLOC_P(args) ()
-#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
+# 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));
+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));
+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));
+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));
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));
+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));
+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_P ((ptrdiff_t __size));
+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));
+extern __malloc_ptr_t __default_morecore __MALLOC_P ((ptrdiff_t __size))
+ __attribute_malloc__;
/* SVID2/XPG mallinfo structure */
struct mallinfo {
/* SVID2/XPG mallopt options */
#ifndef M_MXFAST
-#define M_MXFAST 1 /* UNUSED in this malloc */
+# define M_MXFAST 1 /* UNUSED in this malloc */
#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_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));
/* 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 /* !defined(_MALLOC_H) */
+#endif /* malloc.h */
projects / platform / upstream / glibc.git / blobdiff