malloc/hooks.c

   1 /* Compatibility code for malloc debugging and state management.
   2    Copyright (C) 2001-2021 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Wolfram Gloger <wg@malloc.de>, 2001.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public License as
   8    published by the Free Software Foundation; either version 2.1 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If
  18    not, see <https://www.gnu.org/licenses/>.  */
  19
  20 #ifndef weak_variable
  21 # define weak_variable weak_function
  22 #endif
  23
  24 #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_24)
  25 void (*__malloc_initialize_hook) (void);
  26 compat_symbol (libc, __malloc_initialize_hook,
  27                __malloc_initialize_hook, GLIBC_2_0);
  28 #endif
  29
  30 #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_34)
  31 void weak_variable (*__after_morecore_hook) (void) = NULL;
  32 compat_symbol (libc, __after_morecore_hook, __after_morecore_hook, GLIBC_2_0);
  33 void *(*__morecore)(ptrdiff_t);
  34 compat_symbol (libc, __morecore, __morecore, GLIBC_2_0);
  35
  36 void weak_variable (*__free_hook) (void *, const void *) = NULL;
  37 void *weak_variable (*__malloc_hook) (size_t, const void *) = NULL;
  38 void *weak_variable (*__realloc_hook) (void *, size_t, const void *) = NULL;
  39 void *weak_variable (*__memalign_hook) (size_t, size_t, const void *) = NULL;
  40 compat_symbol (libc, __free_hook, __free_hook, GLIBC_2_0);
  41 compat_symbol (libc, __malloc_hook, __malloc_hook, GLIBC_2_0);
  42 compat_symbol (libc, __realloc_hook, __realloc_hook, GLIBC_2_0);
  43 compat_symbol (libc, __memalign_hook, __memalign_hook, GLIBC_2_0);
  44 #endif
  45
  46 /*
  47  * Local variables:
  48  * c-basic-offset: 2
  49  * End:
  50  */