/* 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, see <http://www.gnu.org/licenses/>. */ #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. */ #ifndef __THROW # if defined __cplusplus && (__GNUC__ >= 3 || __GNUC_MINOR__ >= 8) # define __THROW throw () # else # define __THROW # endif #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 /* 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)); /* Allocate SIZE bytes allocated to ALIGNMENT bytes. */ extern __malloc_ptr_t memalign __MALLOC_P ((size_t __alignment, size_t __size)); libc_hidden_proto(memalign) #ifdef __UCLIBC_SUSV2_LEGACY__ /* Allocate SIZE bytes on a page boundary. */ extern __malloc_ptr_t valloc __MALLOC_P ((size_t __size)) __attribute_malloc__; #endif #ifdef __MALLOC_STANDARD__ /* 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)); libc_hidden_proto(mallinfo) /* 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); #include <stdio.h> /* Prints brief summary statistics to the specified file. * Writes to stderr if file is NULL. */ extern void malloc_stats(FILE *file); /* 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 #define M_PERTURB -6 /* General SVID/XPG interface to tunable parameters. */ extern int mallopt __MALLOC_P ((int __param, int __val)); #endif /* __MALLOC_STANDARD__ */ /* uClibc may use malloc internally in situations where user can not be * notified about out-of-memory condition. In this situation uClibc will * call __uc_malloc_failed if it is non-NULL, and retry allocation * if it returns. If __uc_malloc_failed is NULL, uclibc will _exit(1). * NB: do not use stdio in __uc_malloc_failed handler! */ extern void *__uc_malloc(size_t size); libc_hidden_proto(__uc_malloc) extern void (*__uc_malloc_failed)(size_t size); libc_hidden_proto(__uc_malloc_failed) #ifdef __cplusplus } /* end of extern "C" */ #endif #endif /* malloc.h */