malloc/hooks.c

   1 /* Compatibility code for malloc debugging and state management.
   2    Copyright (C) 2001-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public License as
   7    published by the Free Software Foundation; either version 2.1 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If
  17    not, see <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef weak_variable
  20 # define weak_variable weak_function
  21 #endif
  22
  23 #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_24)
  24 void (*__malloc_initialize_hook) (void);
  25 compat_symbol (libc, __malloc_initialize_hook,
  26                __malloc_initialize_hook, GLIBC_2_0);
  27 #endif
  28
  29 #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_34)
  30 void weak_variable (*__after_morecore_hook) (void) = NULL;
  31 compat_symbol (libc, __after_morecore_hook, __after_morecore_hook, GLIBC_2_0);
  32 void *(*__morecore)(ptrdiff_t);
  33 compat_symbol (libc, __morecore, __morecore, GLIBC_2_0);
  34
  35 void weak_variable (*__free_hook) (void *, const void *) = NULL;
  36 void *weak_variable (*__malloc_hook) (size_t, const void *) = NULL;
  37 void *weak_variable (*__realloc_hook) (void *, size_t, const void *) = NULL;
  38 void *weak_variable (*__memalign_hook) (size_t, size_t, const void *) = NULL;
  39 compat_symbol (libc, __free_hook, __free_hook, GLIBC_2_0);
  40 compat_symbol (libc, __malloc_hook, __malloc_hook, GLIBC_2_0);
  41 compat_symbol (libc, __realloc_hook, __realloc_hook, GLIBC_2_0);
  42 compat_symbol (libc, __memalign_hook, __memalign_hook, GLIBC_2_0);
  43 #endif
  44
  45 /*
  46  * Local variables:
  47  * c-basic-offset: 2
  48  * End:
  49  */