diff options
Diffstat (limited to 'elf/tst-recursive-tlsmallocmod.c')
-rw-r--r-- | elf/tst-recursive-tlsmallocmod.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/elf/tst-recursive-tlsmallocmod.c b/elf/tst-recursive-tlsmallocmod.c new file mode 100644 index 0000000..c24e994 --- /dev/null +++ b/elf/tst-recursive-tlsmallocmod.c @@ -0,0 +1,64 @@ +/* Interposed malloc with dynamic TLS. + Copyright (C) 2024 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 + <https://www.gnu.org/licenses/>. */ + +#include <stdlib.h> +#include <dlfcn.h> + +__thread unsigned int malloc_subsytem_counter; + +static __typeof (malloc) *malloc_fptr; +static __typeof (free) *free_fptr; +static __typeof (calloc) *calloc_fptr; +static __typeof (realloc) *realloc_fptr; + +static void __attribute__ ((constructor)) +init (void) +{ + malloc_fptr = dlsym (RTLD_NEXT, "malloc"); + free_fptr = dlsym (RTLD_NEXT, "free"); + calloc_fptr = dlsym (RTLD_NEXT, "calloc"); + realloc_fptr = dlsym (RTLD_NEXT, "realloc"); +} + +void * +malloc (size_t size) +{ + ++malloc_subsytem_counter; + return malloc_fptr (size); +} + +void +free (void *ptr) +{ + ++malloc_subsytem_counter; + return free_fptr (ptr); +} + +void * +calloc (size_t a, size_t b) +{ + ++malloc_subsytem_counter; + return calloc_fptr (a, b); +} + +void * +realloc (void *ptr, size_t size) +{ + ++malloc_subsytem_counter; + return realloc_fptr (ptr, size); +} |