charon-tkm: Return current refcount when releasing ID

src/charon-tkm/src/tkm/tkm_id_manager.c

@@ -130,27 +130,28 @@ METHOD(tkm_id_manager_t, acquire_ref, bool,
 	return TRUE;
 }
 
-METHOD(tkm_id_manager_t, release_id, bool,
+METHOD(tkm_id_manager_t, release_id, int,
 	private_tkm_id_manager_t * const this, const tkm_context_kind_t kind,
 	const int id)
 {
 	const int idx = id - 1;
+	int refcount = 0;
 
 	if (!is_valid_kind(kind))
 	{
 		DBG1(DBG_LIB, "tried to release id %d for invalid context kind '%d'",
 			 id, kind);
-		return FALSE;
+		return -1;
 	}
 
 	this->locks[kind]->write_lock(this->locks[kind]);
 	if (this->ctxids[kind][idx] > 0)
 	{
-		this->ctxids[kind][idx]--;
+		refcount = --this->ctxids[kind][idx];
 	}
 	this->locks[kind]->unlock(this->locks[kind]);
 
-	return TRUE;
+	return refcount;
 }
 
 

src/charon-tkm/src/tkm/tkm_id_manager.h

@@ -90,11 +90,11 @@ struct tkm_id_manager_t {
 	 *
 	 * @param kind			kind of context id to release
 	 * @param id			id to release
-	 * @return				TRUE if id was released, FALSE otherwise
+	 * @return				current refcount if id was released, -1 otherwise
 	 */
-	bool (*release_id)(tkm_id_manager_t * const this,
+	int (*release_id)(tkm_id_manager_t * const this,
-					   const tkm_context_kind_t kind,
+					  const tkm_context_kind_t kind,
-					   const int id);
+					  const int id);
 
 	/**
 	 * Destroy a tkm_id_manager instance.

src/charon-tkm/tests/id_manager_tests.c

@@ -151,19 +151,18 @@ END_TEST
 
 START_TEST(test_release_id)
 {
-	int i, id = 0;
+	int i, count, id = 0;
-	bool released = false;
 	tkm_id_manager_t *idmgr = tkm_id_manager_create(limits);
 
 	for (i = 0; i < TKM_CTX_MAX; i++)
 	{
 		id = idmgr->acquire_id(idmgr, i);
-		released = idmgr->release_id(idmgr, i, id);
+		count = idmgr->release_id(idmgr, i, id);
 
-		fail_unless(released, "Error releasing id of context kind %d", i);
+		fail_unless(count == 0, "Error releasing id of context kind %d", i);
 
-		/* Reset released variable */
+		/* Reset count variable */
-		released = FALSE;
+		count = 0;
 	}
 
 	idmgr->destroy(idmgr);
@@ -172,17 +171,17 @@ END_TEST
 
 START_TEST(test_release_id_invalid_kind)
 {
-	bool released = TRUE;
+	int count = 0;
 	tkm_id_manager_t *idmgr = tkm_id_manager_create(limits);
 
-	released = idmgr->release_id(idmgr, TKM_CTX_MAX, 1);
+	count = idmgr->release_id(idmgr, TKM_CTX_MAX, 1);
-	fail_if(released, "Released id for invalid context kind %d", TKM_CTX_MAX);
+	fail_if(count >= 0, "Released id for invalid context kind %d", TKM_CTX_MAX);
 
 	/* Reset test variable */
-	released = TRUE;
+	count = 0;
 
-	released = idmgr->release_id(idmgr, -1, 1);
+	count = idmgr->release_id(idmgr, -1, 1);
-	fail_if(released, "Released id for invalid context kind %d", -1);
+	fail_if(count >= 0, "Released id for invalid context kind %d", -1);
 
 	idmgr->destroy(idmgr);
 }
@@ -190,11 +189,11 @@ END_TEST
 
 START_TEST(test_release_id_nonexistent)
 {
-	bool released = FALSE;
+	int count = 0;
 	tkm_id_manager_t *idmgr = tkm_id_manager_create(limits);
 
-	released = idmgr->release_id(idmgr, TKM_CTX_NONCE, 1);
+	count = idmgr->release_id(idmgr, TKM_CTX_NONCE, 1);
-	fail_unless(released, "Release of nonexistent id failed");
+	fail_unless(count == 0, "Release of nonexistent id failed");
 
 	idmgr->destroy(idmgr);
 }