chore: Mark some ThreadPool methods as noexcept

Author: jrosdahl

src/ccache/util/threadpool.cpp

@@ -31,7 +31,7 @@ ThreadPool::ThreadPool(size_t number_of_threads, size_t task_queue_max_size)
   }
 }
 
-ThreadPool::~ThreadPool()
+ThreadPool::~ThreadPool() noexcept
 {
   shut_down();
 }
@@ -53,7 +53,7 @@ ThreadPool::enqueue(std::function<void()> function)
 }
 
 void
-ThreadPool::shut_down()
+ThreadPool::shut_down() noexcept
 {
   {
     std::unique_lock<std::mutex> lock(m_mutex);

src/ccache/util/threadpool.hpp

@@ -35,10 +35,10 @@ class ThreadPool
   explicit ThreadPool(
     size_t number_of_threads,
     size_t task_queue_max_size = std::numeric_limits<size_t>::max());
-  ~ThreadPool();
+  ~ThreadPool() noexcept;
 
   void enqueue(std::function<void()> function);
-  void shut_down();
+  void shut_down() noexcept;
 
 private:
   std::vector<std::thread> m_worker_threads;