mirror of
https://github.com/boostorg/context.git
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52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
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// Copyright Oliver Kowalke 2009.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <cstdlib>
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#include <cstring>
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#include <iostream>
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#include <utility>
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#include <vector>
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#include <boost/assert.hpp>
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#include <boost/context/all.hpp>
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namespace ctx = boost::ctx;
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ctx::fcontext_t fc1, fcm;
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typedef std::pair< int, int > pair_t;
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void f1( intptr_t param)
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{
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pair_t * p = ( pair_t *) param;
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p = ( pair_t *) ctx::jump_fcontext( & fc1, & fcm, ( intptr_t) ( p->first + p->second) );
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ctx::jump_fcontext( & fc1, & fcm, ( intptr_t) ( p->first + p->second) );
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}
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int main( int argc, char * argv[])
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{
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ctx::stack_allocator alloc;
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fc1.fc_stack.base = alloc.allocate(ctx::minimum_stacksize());
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fc1.fc_stack.limit =
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static_cast< char * >( fc1.fc_stack.base) - ctx::minimum_stacksize();
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ctx::make_fcontext( & fc1, f1);
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pair_t p( std::make_pair( 2, 7) );
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int res = ( int) ctx::jump_fcontext( & fcm, & fc1, ( intptr_t) & p);
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std::cout << p.first << " + " << p.second << " == " << res << std::endl;
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p = std::make_pair( 5, 6);
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res = ( int) ctx::jump_fcontext( & fcm, & fc1, ( intptr_t) & p);
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std::cout << p.first << " + " << p.second << " == " << res << std::endl;
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std::cout << "main: done" << std::endl;
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return EXIT_SUCCESS;
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}
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