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Diffstat (limited to 'REORG.TODO/malloc/malloc.h')
| -rw-r--r-- | REORG.TODO/malloc/malloc.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/REORG.TODO/malloc/malloc.h b/REORG.TODO/malloc/malloc.h new file mode 100644 index 0000000000..339ab64c7d --- /dev/null +++ b/REORG.TODO/malloc/malloc.h @@ -0,0 +1,164 @@ +/* Prototypes and definition for malloc implementation. + Copyright (C) 1996-2017 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> +#include <stddef.h> +#include <stdio.h> + +#ifdef _LIBC +# define __MALLOC_HOOK_VOLATILE +# define __MALLOC_DEPRECATED +#else +# define __MALLOC_HOOK_VOLATILE volatile +# define __MALLOC_DEPRECATED __attribute_deprecated__ +#endif + + +__BEGIN_DECLS + +/* Allocate SIZE bytes of memory. */ +extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur; + +/* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */ +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. */ +/* __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__; + +/* Re-allocate the previously allocated block in PTR, making the new + block large enough for NMEMB elements of SIZE bytes each. */ +/* __attribute_malloc__ is not used, because if reallocarray 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 *reallocarray (void *__ptr, size_t __nmemb, size_t __size) +__THROW __attribute_warn_unused_result__; + +/* Free a block allocated by `malloc', `realloc' or `calloc'. */ +extern void free (void *__ptr) __THROW; + +/* Allocate SIZE bytes allocated to ALIGNMENT bytes. */ +extern void *memalign (size_t __alignment, size_t __size) +__THROW __attribute_malloc__ __wur; + +/* Allocate SIZE bytes on a page boundary. */ +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 void *pvalloc (size_t __size) __THROW __attribute_malloc__ __wur; + +/* Underlying allocation function; successive calls should return + contiguous pieces of memory. */ +extern void *(*__morecore) (ptrdiff_t __size); + +/* Default value of `__morecore'. */ +extern void *__default_morecore (ptrdiff_t __size) +__THROW __attribute_malloc__; + +/* SVID2/XPG mallinfo structure */ + +struct mallinfo +{ + int arena; /* non-mmapped space allocated from system */ + int ordblks; /* number of free chunks */ + int smblks; /* number of fastbin blocks */ + int hblks; /* number of mmapped regions */ + int hblkhd; /* space in mmapped regions */ + int usmblks; /* always 0, preserved for backwards compatibility */ + int fsmblks; /* space available in freed fastbin blocks */ + int uordblks; /* total allocated space */ + int fordblks; /* total free space */ + int keepcost; /* top-most, releasable (via malloc_trim) space */ +}; + +/* Returns a copy of the updated current mallinfo. */ +extern struct mallinfo mallinfo (void) __THROW; + +/* SVID2/XPG mallopt options */ +#ifndef M_MXFAST +# define M_MXFAST 1 /* maximum request size for "fastbins" */ +#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 +#define M_ARENA_TEST -7 +#define M_ARENA_MAX -8 + +/* General SVID/XPG interface to tunable parameters. */ +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 (size_t __pad) __THROW; + +/* Report the number of usable allocated bytes associated with allocated + chunk __ptr. */ +extern size_t malloc_usable_size (void *__ptr) __THROW; + +/* Prints brief summary statistics on stderr. */ +extern void malloc_stats (void) __THROW; + +/* Output information about state of allocator to stream FP. */ +extern int malloc_info (int __options, FILE *__fp) __THROW; + +/* Hooks for debugging and user-defined versions. */ +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 (void) __THROW __MALLOC_DEPRECATED; + + +__END_DECLS +#endif /* malloc.h */ |