// 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 <boost/assert.hpp> #include <boost/context/all.hpp> #include "simple_stack_allocator.hpp" namespace ctx = boost::context; typedef ctx::simple_stack_allocator< 8 * 1024 * 1024, // 8MB 64 * 1024, // 64kB 8 * 1024 // 8kB > stack_allocator; ctx::fcontext_t fcm = 0; ctx::fcontext_t fc1 = 0; typedef std::pair< int, int > pair_t; void f1( intptr_t param) { pair_t * p = ( pair_t *) param; p = ( pair_t *) ctx::jump_fcontext( & fc1, fcm, ( intptr_t) ( p->first + p->second) ); ctx::jump_fcontext( & fc1, fcm, ( intptr_t) ( p->first + p->second) ); } int main( int argc, char * argv[]) { stack_allocator alloc; void * sp = alloc.allocate( stack_allocator::default_stacksize() ); fc1 = ctx::make_fcontext( sp, stack_allocator::default_stacksize(), f1); pair_t p( std::make_pair( 2, 7) ); int res = ( int) ctx::jump_fcontext( & fcm, fc1, ( intptr_t) & p); std::cout << p.first << " + " << p.second << " == " << res << std::endl; p = std::make_pair( 5, 6); res = ( int) ctx::jump_fcontext( & fcm, fc1, ( intptr_t) & p); std::cout << p.first << " + " << p.second << " == " << res << std::endl; std::cout << "main: done" << std::endl; return EXIT_SUCCESS; }