Support BOOST_ASIO_NO_TS_EXECUTORS

test/doc/core_snippets.cpp

@@ -38,7 +38,9 @@ namespace ssl = boost::asio::ssl;
 using tcp = net::ip::tcp;
 
 net::io_context ioc;
-auto work = net::make_work_guard(ioc);
+auto work = net::any_io_executor(
+    net::prefer(ioc.get_executor(),
+        net::execution::outstanding_work.tracked));
 std::thread t{[&](){ ioc.run(); }};
 
 error_code ec;

test/doc/http_snippets.cpp

@@ -37,7 +37,10 @@ net::const_buffer get_next_chunk_body()
 void fxx() {
 
     net::io_context ioc;
-    auto work = net::make_work_guard(ioc);
+    auto work = net::any_io_executor(
+        net::prefer(
+            ioc.get_executor(),
+            net::execution::outstanding_work.tracked));
     std::thread t{[&](){ ioc.run(); }};
     net::ip::tcp::socket sock{ioc};
 

test/doc/snippets.ipp

@@ -17,7 +17,10 @@ using tcp     = net::ip::tcp;
 
 error_code ec;
 net::io_context ioc;
-auto work = net::make_work_guard(ioc);
+auto work = net::any_io_executor(
+    net::prefer(
+        ioc.get_executor(),
+        net::execution::outstanding_work.tracked));
 std::thread t{[&](){ ioc.run(); }};
 
 tcp::socket sock(ioc);