aboutsummaryrefslogtreecommitdiff
path: root/elf/tst-recursive-tlsmallocmod.c
diff options
context:
space:
mode:
Diffstat (limited to 'elf/tst-recursive-tlsmallocmod.c')
-rw-r--r--elf/tst-recursive-tlsmallocmod.c64
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);
+}