From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Thu, 9 Jun 2022 16:16:39 +0000 (-0400)
Subject: sessiond: registry_session: mark functions as noexcept
X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=3691d312bcf4dc2cc15f0ecb1f0e2fd2f34315b8

sessiond: registry_session: mark functions as noexcept

Mark functions destroy_channel and _destroy_enum as noexcept as they are
used by the registry_session destructor (which must not throw).

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Ie7bbbf349f14f5691b52873fe8ba6556be143d93
---

diff --git a/src/bin/lttng-sessiond/ust-registry-session.cpp b/src/bin/lttng-sessiond/ust-registry-session.cpp
index 255a5ec81..b78091a04 100644
--- a/src/bin/lttng-sessiond/ust-registry-session.cpp
+++ b/src/bin/lttng-sessiond/ust-registry-session.cpp
@@ -98,8 +98,10 @@ void destroy_channel_rcu(struct rcu_head *head)
  * Destroy every element of the registry and free the memory. This does NOT
  * free the registry pointer since it might not have been allocated before so
  * it's the caller responsability.
+ *
+ * Called from ~registry_session(), must not throw.
  */
-void destroy_channel(lsu::registry_channel *chan, bool notify)
+void destroy_channel(lsu::registry_channel *chan, bool notify) noexcept
 {
 	struct lttng_ht_iter iter;
 	lttng::sessiond::ust::registry_event *event;
@@ -286,8 +288,10 @@ lsu::registry_session::registry_session(const struct lst::abi& in_abi,
 /*
  * For a given enumeration in a registry, delete the entry and destroy
  * the enumeration.
+ *
+ * Note that this is used by ~registry_session() and must not throw.
  */
-void lsu::registry_session::_destroy_enum(lsu::registry_enum *reg_enum)
+void lsu::registry_session::_destroy_enum(lsu::registry_enum *reg_enum) noexcept
 {
 	int ret;
 	lttng::urcu::read_lock_guard read_lock_guard;
diff --git a/src/bin/lttng-sessiond/ust-registry-session.hpp b/src/bin/lttng-sessiond/ust-registry-session.hpp
index 0bd023d70..cce7c5c1b 100644
--- a/src/bin/lttng-sessiond/ust-registry-session.hpp
+++ b/src/bin/lttng-sessiond/ust-registry-session.hpp
@@ -112,7 +112,7 @@ private:
 	void _increase_metadata_size(size_t reservation_length);
 	void _append_metadata_fragment(const std::string& fragment);
 	void _reset_metadata();
-	void _destroy_enum(registry_enum *reg_enum);
+	void _destroy_enum(registry_enum *reg_enum) noexcept;
 	registry_enum *_lookup_enum(const registry_enum *target_enum) const;
 
 	virtual void _accept_on_clock_classes(