1 files changed, 56 insertions, 0 deletions
diff --git a/libs/context/example/jump.cpp b/libs/context/example/jump.cpp
new file mode 100644
index 0000000000..7520b2fcd5
--- /dev/null
+++ b/libs/context/example/jump.cpp
@@ -0,0 +1,56 @@
+
+//          Copyright Oliver Kowalke 2009.
+// 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 <cstring>
+#include <iostream>
+#include <vector>
+
+#include <boost/assert.hpp>
+#include <boost/context/all.hpp>
+
+namespace ctx = boost::ctx;
+
+ctx::fcontext_t fcm, fc1, fc2;
+
+void f1( intptr_t)
+{
+        std::cout << "f1: entered" << std::endl;
+        std::cout << "f1: call jump_fcontext( & fc1, & fc2, 0)" << std::endl;
+        ctx::jump_fcontext( & fc1, & fc2, 0);
+        std::cout << "f1: return" << std::endl;
+        ctx::jump_fcontext( & fc1, & fcm, 0);
+}
+
+void f2( intptr_t)
+{
+        std::cout << "f2: entered" << std::endl;
+        std::cout << "f2: call jump_fcontext( & fc2, & fc1, 0)" << std::endl;
+        ctx::jump_fcontext( & fc2, & fc1, 0);
+        BOOST_ASSERT( false && ! "f2: never returns");
+}
+
+int main( int argc, char * argv[])
+{
+        ctx::stack_allocator alloc1, alloc2;
+
+        fc1.fc_stack.base = alloc1.allocate(ctx::minimum_stacksize());
+        fc1.fc_stack.limit =
+            static_cast< char * >( fc1.fc_stack.base) - ctx::minimum_stacksize();
+        ctx::make_fcontext( & fc1, f1);
+
+        fc2.fc_stack.base = alloc2.allocate(ctx::minimum_stacksize());
+        fc2.fc_stack.limit =
+            static_cast< char * >( fc2.fc_stack.base) - ctx::minimum_stacksize();
+        ctx::make_fcontext( & fc2, f2);
+
+        std::cout << "main: call start_fcontext( & fcm, & fc1, 0)" << std::endl;
+        ctx::jump_fcontext( & fcm, & fc1, 0);
+
+        std::cout << "main: done" << std::endl;
+
+        return EXIT_SUCCESS;
+}