1 files changed, 84 insertions, 0 deletions
diff --git a/tests/context/context_test.c b/tests/context/context_test.c
new file mode 100644
index 00000000..e9a55593
--- /dev/null
+++ b/tests/context/context_test.c
@@ -0,0 +1,84 @@
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#include <sys/eventfd.h>
+
+#include <osmocom/core/logging.h>
+#include <osmocom/core/application.h>
+#include <osmocom/core/utils.h>
+#include <osmocom/core/select.h>
+#include <osmocom/core/talloc.h>
+
+static struct osmo_fd g_evfd;
+
+static void *alloc_res_select;
+static void *alloc_res_global;
+
+static int destructor_called;
+
+static int talloc_destructor(void *ptr)
+{
+	printf("destructor was called automatically\n");
+	/* ensure the destructor is only called for the chunk allocated from the
+	 * volatile select context */
+	OSMO_ASSERT(ptr == alloc_res_select);
+	destructor_called += 1;
+	return 0;
+}
+
+static int evfd_cb(struct osmo_fd *ofd, unsigned int what)
+{
+	uint64_t rval;
+	int rc;
+
+	rc = read(ofd->fd, &rval, sizeof(rval));
+	OSMO_ASSERT(rc == sizeof(rval));
+
+	printf("allocating from select context\n");
+	alloc_res_select = talloc_named_const(OTC_SELECT, 23, "alloc_select");
+	OSMO_ASSERT(alloc_res_select);
+	talloc_set_destructor(alloc_res_select, talloc_destructor);
+
+	printf("allocating from global context\n");
+	alloc_res_global = talloc_named_const(OTC_GLOBAL, 42, "alloc_global");
+	OSMO_ASSERT(alloc_res_global);
+	talloc_set_destructor(alloc_res_global, talloc_destructor);
+	return 0;
+}
+
+const struct log_info_cat default_categories[] = {
+};
+
+static struct log_info info = {
+	.cat = default_categories,
+	.num_cat = ARRAY_SIZE(default_categories),
+};
+
+int main(int argc, char **argv)
+{
+	int rc;
+
+	osmo_init_logging2(OTC_GLOBAL, &info);
+
+	rc = eventfd(0, 0);
+	OSMO_ASSERT(rc >= 0);
+	osmo_fd_setup(&g_evfd, rc, OSMO_FD_READ, evfd_cb, NULL, 0);
+	osmo_fd_register(&g_evfd);
+
+	/* make sure the select loop will immediately call the callback */
+	uint64_t val = 1;
+	rc = write(g_evfd.fd, &val, sizeof(val));
+	OSMO_ASSERT(rc == sizeof(val));
+
+	/* enter osmo_select_main_ctx() once */
+	printf("entering osmo_select_main\n");
+	osmo_select_main_ctx(1);
+
+	/* the allocation must have happened, and the destructor must have been called
+	 * automatically exactly once */
+	OSMO_ASSERT(destructor_called == 1);
+
+	exit(0);
+}