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// 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 <iostream>
#include <sstream>
#include <stdexcept>
#include <string>
#include <utility>
#include <boost/array.hpp>
#include <boost/assert.hpp>
#include <boost/test/unit_test.hpp>
#include <boost/utility.hpp>
#include <boost/context/all.hpp>
#include <boost/context/detail/config.hpp>
#include "../example/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 fc = 0;
ctx::fcontext_t fc1 = 0;
ctx::fcontext_t fc2 = 0;
int value1 = 0;
std::string value2;
double value3 = 0.;
void f1( intptr_t)
{
++value1;
ctx::jump_fcontext( & fc, fcm, 0);
}
void f3( intptr_t)
{
++value1;
ctx::jump_fcontext( & fc, fcm, 0);
++value1;
ctx::jump_fcontext( & fc, fcm, 0);
}
void f4( intptr_t)
{
ctx::jump_fcontext( & fc, fcm, 7);
}
void f5( intptr_t arg)
{
ctx::jump_fcontext( & fc, fcm, arg);
}
void f6( intptr_t arg)
{
std::pair< int, int > data = * ( std::pair< int, int > * ) arg;
int res = data.first + data.second;
data = * ( std::pair< int, int > *)
ctx::jump_fcontext( & fc, fcm, ( intptr_t) res);
res = data.first + data.second;
ctx::jump_fcontext( & fc, fcm, ( intptr_t) res);
}
void f7( intptr_t arg)
{
try
{ throw std::runtime_error( ( char *) arg); }
catch ( std::runtime_error const& e)
{ value2 = e.what(); }
ctx::jump_fcontext( & fc, fcm, arg);
}
void f8( intptr_t arg)
{
double d = * ( double *) arg;
d += 3.45;
value3 = d;
ctx::jump_fcontext( & fc, fcm, 0);
}
void f10( intptr_t)
{
value1 = 3;
ctx::jump_fcontext( & fc2, fc1, 0);
}
void f9( intptr_t)
{
std::cout << "f1: entered" << std::endl;
stack_allocator alloc;
void * sp = alloc.allocate( stack_allocator::default_stacksize());
fc2 = ctx::make_fcontext( sp, stack_allocator::default_stacksize(), f10);
ctx::jump_fcontext( & fc1, fc2, 0);
ctx::jump_fcontext( & fc1, fcm, 0);
}
void test_setup()
{
stack_allocator alloc;
void * sp = alloc.allocate( stack_allocator::minimum_stacksize() );
fc = ctx::make_fcontext( sp, stack_allocator::minimum_stacksize(), f1);
BOOST_CHECK( fc);
}
void test_start()
{
value1 = 0;
stack_allocator alloc;
void * sp = alloc.allocate( stack_allocator::minimum_stacksize() );
fc = ctx::make_fcontext( sp, stack_allocator::minimum_stacksize(), f1);
BOOST_CHECK( fc);
BOOST_CHECK_EQUAL( 0, value1);
ctx::jump_fcontext( & fcm, fc, 0);
BOOST_CHECK_EQUAL( 1, value1);
}
void test_jump()
{
value1 = 0;
stack_allocator alloc;
void * sp = alloc.allocate( stack_allocator::minimum_stacksize() );
fc = ctx::make_fcontext( sp, stack_allocator::minimum_stacksize(), f3);
BOOST_CHECK( fc);
BOOST_CHECK_EQUAL( 0, value1);
ctx::jump_fcontext( & fcm, fc, 0);
BOOST_CHECK_EQUAL( 1, value1);
ctx::jump_fcontext( & fcm, fc, 0);
BOOST_CHECK_EQUAL( 2, value1);
}
void test_result()
{
stack_allocator alloc;
void * sp = alloc.allocate( stack_allocator::minimum_stacksize() );
fc = ctx::make_fcontext( sp, stack_allocator::minimum_stacksize(), f4);
BOOST_CHECK( fc);
int result = ( int) ctx::jump_fcontext( & fcm, fc, 0);
BOOST_CHECK_EQUAL( 7, result);
}
void test_arg()
{
stack_allocator alloc;
int i = 7;
void * sp = alloc.allocate( stack_allocator::minimum_stacksize() );
fc = ctx::make_fcontext( sp, stack_allocator::minimum_stacksize(), f5);
BOOST_CHECK( fc);
int result = ( int) ctx::jump_fcontext( & fcm, fc, i);
BOOST_CHECK_EQUAL( i, result);
}
void test_transfer()
{
stack_allocator alloc;
std::pair< int, int > data = std::make_pair( 3, 7);
void * sp = alloc.allocate( stack_allocator::minimum_stacksize() );
fc = ctx::make_fcontext( sp, stack_allocator::minimum_stacksize(), f6);
BOOST_CHECK( fc);
int result = ( int) ctx::jump_fcontext( & fcm, fc, ( intptr_t) & data);
BOOST_CHECK_EQUAL( 10, result);
data = std::make_pair( 7, 7);
result = ( int) ctx::jump_fcontext( & fcm, fc, ( intptr_t) & data);
BOOST_CHECK_EQUAL( 14, result);
}
void test_exception()
{
stack_allocator alloc;
const char * what = "hello world";
void * sp = alloc.allocate( stack_allocator::default_stacksize() );
fc = ctx::make_fcontext( sp, stack_allocator::minimum_stacksize(), f7);
BOOST_CHECK( fc);
ctx::jump_fcontext( & fcm, fc, ( intptr_t) what);
BOOST_CHECK_EQUAL( std::string( what), value2);
}
void test_fp()
{
stack_allocator alloc;
double d = 7.13;
void * sp = alloc.allocate( stack_allocator::minimum_stacksize() );
fc = ctx::make_fcontext( sp, stack_allocator::minimum_stacksize(), f8);
BOOST_CHECK( fc);
ctx::jump_fcontext( & fcm, fc, (intptr_t) & d);
BOOST_CHECK_EQUAL( 10.58, value3);
}
void test_stacked()
{
value1 = 0;
stack_allocator alloc;
void * sp = alloc.allocate( stack_allocator::default_stacksize());
fc1 = ctx::make_fcontext( sp, stack_allocator::default_stacksize(), f9);
ctx::jump_fcontext( & fcm, fc1, 0);
BOOST_CHECK_EQUAL( 3, value1);
}
#if ! defined(BOOST_CONTEXT_NO_EXECUTION_CONTEXT)
ctx::execution_context * mctx = nullptr;
void f11() {
value1 = 3;
mctx->resume();
}
void f12( int i) {
value1 = i;
mctx->resume();
}
void test_ectx() {
boost::context::execution_context ctx( boost::context::execution_context::current() );
mctx = & ctx;
value1 = 0;
ctx::fixedsize_stack alloc;
ctx::execution_context ectx( alloc, f11);
ectx.resume();
BOOST_CHECK_EQUAL( 3, value1);
}
void test_variadric() {
boost::context::execution_context ctx( boost::context::execution_context::current() );
mctx = & ctx;
value1 = 0;
ctx::fixedsize_stack alloc;
ctx::execution_context ectx( alloc, f12, 5);
ectx.resume();
BOOST_CHECK_EQUAL( 5, value1);
}
void test_prealloc() {
boost::context::execution_context ctx( boost::context::execution_context::current() );
mctx = & ctx;
value1 = 0;
ctx::fixedsize_stack alloc;
ctx::stack_context sctx( alloc.allocate() );
void * sp = static_cast< char * >( sctx.sp) - 10;
std::size_t size = sctx.size - 10;
ctx::execution_context ectx( ctx::preallocated( sp, size, sctx), alloc, f12, 7);
ectx.resume();
BOOST_CHECK_EQUAL( 7, value1);
}
#endif
boost::unit_test::test_suite * init_unit_test_suite( int, char* [])
{
boost::unit_test::test_suite * test =
BOOST_TEST_SUITE("Boost.Context: context test suite");
test->add( BOOST_TEST_CASE( & test_setup) );
test->add( BOOST_TEST_CASE( & test_start) );
test->add( BOOST_TEST_CASE( & test_jump) );
test->add( BOOST_TEST_CASE( & test_result) );
test->add( BOOST_TEST_CASE( & test_arg) );
test->add( BOOST_TEST_CASE( & test_transfer) );
test->add( BOOST_TEST_CASE( & test_exception) );
test->add( BOOST_TEST_CASE( & test_fp) );
test->add( BOOST_TEST_CASE( & test_stacked) );
#if ! defined(BOOST_CONTEXT_NO_EXECUTION_CONTEXT)
test->add( BOOST_TEST_CASE( & test_ectx) );
test->add( BOOST_TEST_CASE( & test_variadric) );
test->add( BOOST_TEST_CASE( & test_prealloc) );
#endif
return test;
}
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