aboutsummaryrefslogtreecommitdiffstats
path: root/libs/nanopb/tests/common/malloc_wrappers.c
diff options
context:
space:
mode:
Diffstat (limited to 'libs/nanopb/tests/common/malloc_wrappers.c')
-rw-r--r--libs/nanopb/tests/common/malloc_wrappers.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/libs/nanopb/tests/common/malloc_wrappers.c b/libs/nanopb/tests/common/malloc_wrappers.c
new file mode 100644
index 00000000..ad69f1ce
--- /dev/null
+++ b/libs/nanopb/tests/common/malloc_wrappers.c
@@ -0,0 +1,54 @@
+#include "malloc_wrappers.h"
+#include <stdint.h>
+#include <assert.h>
+#include <string.h>
+
+static size_t alloc_count = 0;
+
+/* Allocate memory and place check values before and after. */
+void* malloc_with_check(size_t size)
+{
+ size_t size32 = (size + 3) / 4 + 3;
+ uint32_t *buf = malloc(size32 * sizeof(uint32_t));
+ buf[0] = size32;
+ buf[1] = 0xDEADBEEF;
+ buf[size32 - 1] = 0xBADBAD;
+ return buf + 2;
+}
+
+/* Free memory allocated with malloc_with_check() and do the checks. */
+void free_with_check(void *mem)
+{
+ uint32_t *buf = (uint32_t*)mem - 2;
+ assert(buf[1] == 0xDEADBEEF);
+ assert(buf[buf[0] - 1] == 0xBADBAD);
+ free(buf);
+}
+
+/* Track memory usage */
+void* counting_realloc(void *ptr, size_t size)
+{
+ /* Don't allocate crazy amounts of RAM when fuzzing */
+ if (size > 1000000)
+ return NULL;
+
+ if (!ptr && size)
+ alloc_count++;
+
+ return realloc(ptr, size);
+}
+
+void counting_free(void *ptr)
+{
+ if (ptr)
+ {
+ assert(alloc_count > 0);
+ alloc_count--;
+ free(ptr);
+ }
+}
+
+size_t get_alloc_count()
+{
+ return alloc_count;
+}