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Declare malloc hook variables as volatile.
This commit is contained in:
Ulrich Drepper
@ -1,5 +1,5 @@
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/* Prototypes and definition for malloc implementation.
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Copyright (C) 1996, 1997, 1999, 2000, 2002-2004, 2005, 2007, 2009
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Copyright (C) 1996, 1997, 1999, 2000, 2002-2004, 2005, 2007, 2009, 2011
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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@ -37,10 +37,17 @@
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functions. */
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# define __MALLOC_PMT(args) args
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# ifdef _LIBC
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# define __MALLOC_HOOK_VOLATILE
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# else
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# define __MALLOC_HOOK_VOLATILE
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# endif
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#else /* Not GCC. */
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# define __MALLOC_P(args) args
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# define __MALLOC_PMT(args) args
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# define __MALLOC_HOOK_VOLATILE
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#endif /* GCC. */
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@ -48,50 +55,49 @@
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__BEGIN_DECLS
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/* Allocate SIZE bytes of memory. */
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extern void *malloc __MALLOC_P ((size_t __size)) __attribute_malloc__ __wur;
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extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur;
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/* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */
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extern void *calloc __MALLOC_P ((size_t __nmemb, size_t __size))
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__attribute_malloc__ __wur;
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extern void *calloc (size_t __nmemb, size_t __size)
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__THROW __attribute_malloc__ __wur;
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/* Re-allocate the previously allocated block in __ptr, making the new
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block SIZE bytes long. */
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/* __attribute_malloc__ is not used, because if realloc returns
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the same pointer that was passed to it, aliasing needs to be allowed
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between objects pointed by the old and new pointers. */
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extern void *realloc __MALLOC_P ((void *__ptr, size_t __size))
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__attribute_warn_unused_result__;
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extern void *realloc (void *__ptr, size_t __size)
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__THROW __attribute_warn_unused_result__;
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/* Free a block allocated by `malloc', `realloc' or `calloc'. */
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extern void free __MALLOC_P ((void *__ptr));
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extern void free (void *__ptr) __THROW;
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/* Free a block allocated by `calloc'. */
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extern void cfree __MALLOC_P ((void *__ptr));
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extern void cfree (void *__ptr) __THROW;
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/* Allocate SIZE bytes allocated to ALIGNMENT bytes. */
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extern void *memalign __MALLOC_P ((size_t __alignment, size_t __size))
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__attribute_malloc__ __wur;
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extern void *memalign (size_t __alignment, size_t __size)
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__THROW __attribute_malloc__ __wur;
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/* Allocate SIZE bytes on a page boundary. */
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extern void *valloc __MALLOC_P ((size_t __size))
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__attribute_malloc__ __wur;
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extern void *valloc (size_t __size) __THROW __attribute_malloc__ __wur;
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/* Equivalent to valloc(minimum-page-that-holds(n)), that is, round up
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__size to nearest pagesize. */
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extern void * pvalloc __MALLOC_P ((size_t __size))
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__attribute_malloc__ __wur;
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extern void * pvalloc (size_t __size) __THROW __attribute_malloc__ __wur;
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/* Underlying allocation function; successive calls should return
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contiguous pieces of memory. */
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extern void *(*__morecore) __MALLOC_PMT ((ptrdiff_t __size));
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extern void *(*__morecore) (ptrdiff_t __size);
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/* Default value of `__morecore'. */
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extern void *__default_morecore __MALLOC_P ((ptrdiff_t __size))
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__attribute_malloc__;
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extern void *__default_morecore (ptrdiff_t __size)
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__THROW __attribute_malloc__;
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/* SVID2/XPG mallinfo structure */
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struct mallinfo {
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struct mallinfo
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{
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int arena; /* non-mmapped space allocated from system */
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int ordblks; /* number of free chunks */
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int smblks; /* number of fastbin blocks */
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@ -105,7 +111,7 @@ struct mallinfo {
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};
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/* Returns a copy of the updated current mallinfo. */
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extern struct mallinfo mallinfo __MALLOC_P ((void));
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extern struct mallinfo mallinfo (void) __THROW;
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/* SVID2/XPG mallopt options */
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#ifndef M_MXFAST
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@ -132,47 +138,48 @@ extern struct mallinfo mallinfo __MALLOC_P ((void));
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#define M_ARENA_MAX -8
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/* General SVID/XPG interface to tunable parameters. */
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extern int mallopt __MALLOC_P ((int __param, int __val));
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extern int mallopt (int __param, int __val) __THROW;
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/* Release all but __pad bytes of freed top-most memory back to the
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system. Return 1 if successful, else 0. */
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extern int malloc_trim __MALLOC_P ((size_t __pad));
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extern int malloc_trim (size_t __pad) __THROW;
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/* Report the number of usable allocated bytes associated with allocated
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chunk __ptr. */
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extern size_t malloc_usable_size __MALLOC_P ((void *__ptr));
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extern size_t malloc_usable_size (void *__ptr) __THROW;
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/* Prints brief summary statistics on stderr. */
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extern void malloc_stats __MALLOC_P ((void));
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extern void malloc_stats (void) __THROW;
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/* Output information about state of allocator to stream FP. */
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extern int malloc_info (int __options, FILE *__fp);
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extern int malloc_info (int __options, FILE *__fp) __THROW;
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/* Record the state of all malloc variables in an opaque data structure. */
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extern void *malloc_get_state __MALLOC_P ((void));
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extern void *malloc_get_state (void) __THROW;
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/* Restore the state of all malloc variables from data obtained with
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malloc_get_state(). */
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extern int malloc_set_state __MALLOC_P ((void *__ptr));
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extern int malloc_set_state (void *__ptr) __THROW;
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/* Called once when malloc is initialized; redefining this variable in
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the application provides the preferred way to set up the hook
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pointers. */
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extern void (*__malloc_initialize_hook) __MALLOC_PMT ((void));
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extern void (*__malloc_initialize_hook) (void);
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/* Hooks for debugging and user-defined versions. */
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extern void (*__free_hook) __MALLOC_PMT ((void *__ptr,
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__const __malloc_ptr_t));
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extern void *(*__malloc_hook) __MALLOC_PMT ((size_t __size,
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__const __malloc_ptr_t));
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extern void *(*__realloc_hook) __MALLOC_PMT ((void *__ptr, size_t __size,
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__const __malloc_ptr_t));
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extern void *(*__memalign_hook) __MALLOC_PMT ((size_t __alignment,
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size_t __size,
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__const __malloc_ptr_t));
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extern void (*__after_morecore_hook) __MALLOC_PMT ((void));
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extern void (*__MALLOC_HOOK_VOLATILE __free_hook) (void *__ptr,
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__const __malloc_ptr_t);
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extern void *(*__MALLOC_HOOK_VOLATILE __malloc_hook) (size_t __size,
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__const __malloc_ptr_t);
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extern void *(*__MALLOC_HOOK_VOLATILE __realloc_hook) (void *__ptr,
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size_t __size,
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__const __malloc_ptr_t);
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extern void *(*__MALLOC_HOOK_VOLATILE __memalign_hook) (size_t __alignment,
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size_t __size,
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__const __malloc_ptr_t);
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extern void (*__MALLOC_HOOK_VOLATILE __after_morecore_hook) (void);
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/* Activate a standard set of debugging hooks. */
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extern void __malloc_check_init __MALLOC_P ((void));
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extern void __malloc_check_init (void) __THROW;
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__END_DECLS
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