early-access version 3088

externals/vcpkg/buildtrees/boost-context/src/ost-1.79.0-c7ed8111f4.clean/example/callcc/throw.cpp

@@ -0,0 +1,47 @@
+
+//          Copyright Oliver Kowalke 2016.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE_1_0.txt or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+
+#include <cstdlib>
+#include <exception>
+#include <iostream>
+#include <stdexcept>
+#include <string>
+
+#include <boost/context/continuation.hpp>
+
+namespace ctx = boost::context;
+
+struct my_exception : public std::runtime_error {
+    ctx::continuation    c;
+    my_exception( ctx::continuation && c_, std::string const& what) :
+        std::runtime_error{ what },
+        c{ std::move( c_) } {
+    }
+};
+
+int main() {
+    ctx::continuation c = ctx::callcc([](ctx::continuation && c) {
+        for (;;) {
+            try {
+                std::cout << "entered" << std::endl;
+                c = c.resume();
+            } catch ( my_exception & ex) {
+                std::cerr << "my_exception: " << ex.what() << std::endl;
+                return std::move( ex.c);
+            }
+        }
+        return std::move( c);
+    });
+    c = c.resume_with(
+           [](ctx::continuation && c){
+               throw my_exception(std::move( c), "abc");
+               return {};
+           });
+
+    std::cout << "main: done" << std::endl;
+
+    return EXIT_SUCCESS;
+}