talloc: allow replacement allocator

[ccan] / ccan / talloc / test / run-set_allocator.c

diff --git a/ccan/talloc/test/run-set_allocator.c b/ccan/talloc/test/run-set_allocator.c
new file mode 100644 (file)
index 0000000..e485c62
--- /dev/null
+++ b/ccan/talloc/test/run-set_allocator.c
@@ -0,0 +1,57 @@
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+static unsigned my_malloc_count, my_free_count, my_realloc_count;
+
+static void *my_malloc(size_t size)
+{
+       my_malloc_count++;
+       return malloc(size);
+}
+
+static void my_free(void *ptr)
+{
+       my_free_count++;
+       free(ptr);
+}
+
+static void *my_realloc(void *ptr, size_t size)
+{
+       my_realloc_count++;
+       ok1(ptr);
+       ok1(size);
+       return realloc(ptr, size);
+}
+
+int main(int argc, char *argv[])
+{
+       int *p1, *p2;
+
+       plan_tests(14);
+       failtest_init(argc, argv);
+       talloc_set_allocator(my_malloc, my_free, my_realloc);
+       p1 = talloc_array(NULL, int, 10);
+       ok1(my_malloc_count == 1);
+       ok1(my_free_count == 0);
+       ok1(my_realloc_count == 0);
+
+       p1 = talloc_realloc(NULL, p1, int, 10000);
+       ok1(my_malloc_count == 1);
+       ok1(my_free_count == 0);
+       ok1(my_realloc_count == 1);
+
+       p2 = talloc(p1, int);
+       ok1(my_malloc_count == 2);
+       ok1(my_free_count == 0);
+       ok1(my_realloc_count == 1);
+
+       talloc_free(p1);
+       ok1(my_malloc_count == 2);
+       ok1(my_free_count == 2);
+       ok1(my_realloc_count == 1);
+
+       failtest_exit(exit_status());
+}