| /* 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 |
| |
| #include <features.h> |
| |
| /* |
| `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 |
| |
| #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 |
| #endif |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| struct _reent; |
| |
| /* 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__; |
| extern __malloc_ptr_t _malloc_r __MALLOC_P ((struct _reent * __r, 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__; |
| extern __malloc_ptr_t _calloc_r __MALLOC_P ((struct _reent * __r, |
| 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__; |
| extern __malloc_ptr_t _realloc_r __MALLOC_P ((struct _reent * __r, |
| __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 void _free_r __MALLOC_P ((struct _reent * __r, __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)); |
| extern __malloc_ptr_t _memalign_r __MALLOC_P ((struct _reent *__r, |
| 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__; |
| extern __malloc_ptr_t _valloc_r __MALLOC_P ((struct _reent *__r, |
| 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__; |
| extern __malloc_ptr_t _pvalloc_r __MALLOC_P ((struct _reent *__r, |
| 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)); |
| extern struct mallinfo _mallinfo_r __MALLOC_P ((struct _reent *__r)); |
| |
| /* 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)); |
| extern int _mallopt_r __MALLOC_P ((struct _reent *__r, 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)); |
| extern void _malloc_stats_r __MALLOC_P ((struct _reent *__r)); |
| |
| /* 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 */ |