Migrate to threading_helpers.h
Signed-off-by: Paul Elliott <paul.elliott@arm.com>
diff --git a/tests/include/test/threading_helpers.h b/tests/include/test/threading_helpers.h
new file mode 100644
index 0000000..3c4d441
--- /dev/null
+++ b/tests/include/test/threading_helpers.h
@@ -0,0 +1,45 @@
+/**
+ * \file threading_helpers.h
+ *
+ * \brief This file contains the prototypes of helper functions for the purpose
+ * of testing threading.
+ */
+
+/*
+ * Copyright The Mbed TLS Contributors
+ * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+#ifndef THREADING_HELPERS_H
+#define THREADING_HELPERS_H
+
+#if defined MBEDTLS_THREADING_C
+
+#if defined(MBEDTLS_THREADING_PTHREAD) && defined(MBEDTLS_TEST_HOOKS)
+#define MBEDTLS_TEST_MUTEX_USAGE
+#endif
+
+#if defined(MBEDTLS_TEST_MUTEX_USAGE)
+/**
+ * Activate the mutex usage verification framework. See threading_helpers.c for
+ * information.
+ */
+void mbedtls_test_mutex_usage_init(void);
+
+/**
+ * Deactivate the mutex usage verification framework. See threading_helpers.c
+ * for information.
+ */
+void mbedtls_test_mutex_usage_end(void);
+
+/**
+ * Call this function after executing a test case to check for mutex usage
+ * errors.
+ */
+void mbedtls_test_mutex_usage_check(void);
+#endif /* MBEDTLS_TEST_MUTEX_USAGE */
+
+#endif /* MBEDTLS_THREADING_C */
+
+#endif /* THREADING_HELPERS_H */
+