bool coroutine_impl::operator()()
{
assert(!done);
// Passing this, as the trampoline expects it as a parameter. (Used only on the first call.)
main.jump(gen, reinterpret_cast<intptr_t>(this), true);
if (exception) std::rethrow_exception(exception);
return !done;
}
// Run in callee.
void coroutine_impl::run()
{
auto yield = [this]()
{
if (deleted)
throw coroutine::stop();
gen.jump(main, {}, true);
if (deleted)
throw coroutine::stop();
};
try
{
body(std::move(yield));
}
catch (coroutine::stop&) {}
catch (...) { exception = std::current_exception(); }
done = true;
gen.jump(main, {}, true);
}
R * yield_to_( Other * other, typename Other::param_type * to)
{
BOOST_ASSERT( ! is_complete() );
BOOST_ASSERT( is_running() );
BOOST_ASSERT( ! other->is_complete() );
BOOST_ASSERT( ! other->is_running() );
other->caller_ = caller_;
flags_ &= ~flag_running;
param_type * from(
reinterpret_cast< param_type * >(
callee_.jump(
other->callee_,
reinterpret_cast< intptr_t >( to),
preserve_fpu() ) ) );
flags_ |= flag_running;
if ( from->do_unwind) throw forced_unwind();
BOOST_ASSERT( from->data);
return from->data;
}