ircd: Various exception assertions; minor cleanup.

include/ircd/client.h

@@ -62,7 +62,7 @@ struct ircd::client
 	bool resource_request(const http::request::head &);
 	bool handle_request(parse::capstan &pc);
 	bool main() noexcept;
-	void async();
+	bool async();
 
   public:
 	client(std::shared_ptr<socket>);

include/ircd/ctx/pool.h

@@ -30,7 +30,7 @@ struct ircd::ctx::pool
 	std::vector<context> ctxs;
 
 	void next();
-	void main();
+	void main() noexcept;
 
   public:
 	// indicators

ircd/client.cc

@@ -267,9 +267,10 @@ namespace ircd
 ///
 /// This call returns immediately so we no longer block the current context and
 /// its stack while waiting for activity on idle connections between requests.
-void
+bool
 ircd::client::async()
 {
+	const unwind::nominal::assertion na;
 	assert(bool(this->sock));
 	assert(bool(this->conf));
 	auto &sock(*this->sock);
@@ -289,6 +290,7 @@ ircd::client::async()
 	};
 
 	sock(opts, std::move(handler));
+	return true;
 }
 
 /// The client's socket is ready for reading. This intermediate handler

ircd/ctx.cc

@@ -727,7 +727,7 @@ ircd::ctx::pool::interrupt()
 
 void
 ircd::ctx::pool::main()
-try
+noexcept try
 {
 	++running;
 	const unwind avail([this]
@@ -741,10 +741,13 @@ try
 catch(const interrupted &e)
 {
 /*
-	log::debug("pool(%p) ctx(%p): %s",
+	log::debug
+	{
+		"pool(%p) ctx(%p): %s",
 		this,
 		&cur(),
-	           e.what());
+		e.what()
+	};
 */
 }
 
@@ -773,10 +776,13 @@ catch(const interrupted &e)
 }
 catch(const std::exception &e)
 {
-	log::critical("pool(%p) ctx(%p): unhandled: %s",
+	log::critical
+	{
+		"pool(%p) ctx(%p): unhandled: %s",
 		this,
 		&cur(),
-	              e.what());
+		e.what()
+	};
 }
 
 void