execute.cpp
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//
// execute.cpp
// ~~~~~~~~~~~
//
// Copyright (c) 2003-2020 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// 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)
//
// Disable autolinking for unit tests.
#if !defined(BOOST_ALL_NO_LIB)
#define BOOST_ALL_NO_LIB 1
#endif // !defined(BOOST_ALL_NO_LIB)
// Test that header file is self-contained.
#include "asio/execution/execute.hpp"
#include "asio/execution/sender.hpp"
#include "asio/execution/submit.hpp"
#include "asio/execution/invocable_archetype.hpp"
#include "../unit_test.hpp"
#if defined(ASIO_HAS_BOOST_BIND)
# include <boost/bind/bind.hpp>
#else // defined(ASIO_HAS_BOOST_BIND)
# include <functional>
#endif // defined(ASIO_HAS_BOOST_BIND)
namespace exec = asio::execution;
struct no_execute
{
};
struct const_member_execute
{
template <typename F>
void execute(ASIO_MOVE_ARG(F) f) const
{
typename asio::decay<F>::type tmp(ASIO_MOVE_CAST(F)(f));
tmp();
}
};
#if !defined(ASIO_HAS_DEDUCED_EXECUTE_MEMBER_TRAIT)
namespace asio {
namespace traits {
template <typename F>
struct execute_member<const_member_execute, F>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
typedef void result_type;
};
} // namespace traits
} // namespace asio
#endif // !defined(ASIO_HAS_DEDUCED_EXECUTE_MEMBER_TRAIT)
struct free_execute_const_executor
{
template <typename F>
friend void execute(const free_execute_const_executor&,
ASIO_MOVE_ARG(F) f)
{
typename asio::decay<F>::type tmp(ASIO_MOVE_CAST(F)(f));
tmp();
}
};
#if !defined(ASIO_HAS_DEDUCED_EXECUTE_FREE_TRAIT)
namespace asio {
namespace traits {
template <typename F>
struct execute_free<free_execute_const_executor, F>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
typedef void result_type;
};
} // namespace traits
} // namespace asio
#endif // !defined(ASIO_HAS_DEDUCED_EXECUTE_FREE_TRAIT)
#if defined(ASIO_HAS_MOVE)
// Support for rvalue references is required in order to use the execute
// customisation point with non-const member functions and free functions
// taking non-const arguments.
struct non_const_member_execute
{
template <typename F>
void execute(ASIO_MOVE_ARG(F) f)
{
typename asio::decay<F>::type tmp(ASIO_MOVE_CAST(F)(f));
tmp();
}
};
#if !defined(ASIO_HAS_DEDUCED_EXECUTE_MEMBER_TRAIT)
namespace asio {
namespace traits {
template <typename F>
struct execute_member<non_const_member_execute, F>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
typedef void result_type;
};
template <typename F>
struct execute_member<const non_const_member_execute, F>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = false);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
typedef void result_type;
};
template <typename F>
struct execute_member<const non_const_member_execute&, F>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = false);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
typedef void result_type;
};
} // namespace traits
} // namespace asio
#endif // !defined(ASIO_HAS_DEDUCED_EXECUTE_MEMBER_TRAIT)
struct free_execute_non_const_executor
{
template <typename F>
friend void execute(free_execute_non_const_executor&,
ASIO_MOVE_ARG(F) f)
{
typename asio::decay<F>::type tmp(ASIO_MOVE_CAST(F)(f));
tmp();
}
};
#if !defined(ASIO_HAS_DEDUCED_EXECUTE_FREE_TRAIT)
namespace asio {
namespace traits {
template <typename F>
struct execute_free<free_execute_non_const_executor, F>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
typedef void result_type;
};
template <typename F>
struct execute_free<const free_execute_non_const_executor, F>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = false);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
typedef void result_type;
};
template <typename F>
struct execute_free<const free_execute_non_const_executor&, F>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = false);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
typedef void result_type;
};
} // namespace traits
} // namespace asio
#endif // !defined(ASIO_HAS_DEDUCED_EXECUTE_FREE_TRAIT)
#endif // defined(ASIO_HAS_MOVE)
struct operation_state
{
void start() ASIO_NOEXCEPT
{
}
};
namespace asio {
namespace traits {
#if !defined(ASIO_HAS_DEDUCED_START_MEMBER_TRAIT)
template <>
struct start_member<operation_state>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
typedef void result_type;
};
#endif // !defined(ASIO_HAS_DEDUCED_START_MEMBER_TRAIT)
} // namespace traits
} // namespace asio
struct sender : exec::sender_base
{
sender()
{
}
template <typename R>
operation_state connect(ASIO_MOVE_ARG(R) r) const
{
(void)r;
return operation_state();
}
template <typename R>
void submit(ASIO_MOVE_ARG(R) r) const
{
exec::set_value(ASIO_MOVE_CAST(R)(r));
}
};
namespace asio {
namespace traits {
#if !defined(ASIO_HAS_DEDUCED_CONNECT_MEMBER_TRAIT)
template <typename R>
struct connect_member<const sender, R>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
typedef operation_state result_type;
};
#endif // !defined(ASIO_HAS_DEDUCED_CONNECT_MEMBER_TRAIT)
#if !defined(ASIO_HAS_DEDUCED_SUBMIT_MEMBER_TRAIT)
template <typename R>
struct submit_member<const sender, R>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
typedef void result_type;
};
#endif // !defined(ASIO_HAS_DEDUCED_SUBMIT_MEMBER_TRAIT)
} // namespace traits
} // namespace asio
void test_can_execute()
{
ASIO_CONSTEXPR bool b1 = exec::can_execute<
no_execute&, exec::invocable_archetype>::value;
ASIO_CHECK(b1 == false);
ASIO_CONSTEXPR bool b2 = exec::can_execute<
const no_execute&, exec::invocable_archetype>::value;
ASIO_CHECK(b2 == false);
ASIO_CONSTEXPR bool b3 = exec::can_execute<
const_member_execute&, exec::invocable_archetype>::value;
ASIO_CHECK(b3 == true);
ASIO_CONSTEXPR bool b4 = exec::can_execute<
const const_member_execute&, exec::invocable_archetype>::value;
ASIO_CHECK(b4 == true);
ASIO_CONSTEXPR bool b5 = exec::can_execute<
free_execute_const_executor&, exec::invocable_archetype>::value;
ASIO_CHECK(b5 == true);
ASIO_CONSTEXPR bool b6 = exec::can_execute<
const free_execute_const_executor&, exec::invocable_archetype>::value;
ASIO_CHECK(b6 == true);
#if defined(ASIO_HAS_MOVE)
ASIO_CONSTEXPR bool b7 = exec::can_execute<
non_const_member_execute&, exec::invocable_archetype>::value;
ASIO_CHECK(b7 == true);
ASIO_CONSTEXPR bool b8 = exec::can_execute<
const non_const_member_execute&, exec::invocable_archetype>::value;
ASIO_CHECK(b8 == false);
ASIO_CONSTEXPR bool b9 = exec::can_execute<
free_execute_non_const_executor&, exec::invocable_archetype>::value;
ASIO_CHECK(b9 == true);
ASIO_CONSTEXPR bool b10 = exec::can_execute<
const free_execute_non_const_executor&, exec::invocable_archetype>::value;
ASIO_CHECK(b10 == false);
#endif // defined(ASIO_HAS_MOVE)
ASIO_CONSTEXPR bool b11 = exec::can_execute<
sender&, exec::invocable_archetype>::value;
ASIO_CHECK(b11 == true);
ASIO_CONSTEXPR bool b12 = exec::can_execute<
const sender&, exec::invocable_archetype>::value;
ASIO_CHECK(b12 == true);
}
void increment(int* count)
{
++(*count);
}
void test_execute()
{
#if defined(ASIO_HAS_BOOST_BIND)
namespace bindns = boost;
#else // defined(ASIO_HAS_BOOST_BIND)
namespace bindns = std;
#endif // defined(ASIO_HAS_BOOST_BIND)
int count = 0;
const_member_execute ex1 = {};
exec::execute(ex1, bindns::bind(&increment, &count));
ASIO_CHECK(count == 1);
count = 0;
const const_member_execute ex2 = {};
exec::execute(ex2, bindns::bind(&increment, &count));
ASIO_CHECK(count == 1);
count = 0;
exec::execute(const_member_execute(), bindns::bind(&increment, &count));
ASIO_CHECK(count == 1);
count = 0;
free_execute_const_executor ex3 = {};
exec::execute(ex3, bindns::bind(&increment, &count));
ASIO_CHECK(count == 1);
count = 0;
const free_execute_const_executor ex4 = {};
exec::execute(ex4, bindns::bind(&increment, &count));
ASIO_CHECK(count == 1);
count = 0;
exec::execute(free_execute_const_executor(),
bindns::bind(&increment, &count));
ASIO_CHECK(count == 1);
#if defined(ASIO_HAS_MOVE)
count = 0;
non_const_member_execute ex5 = {};
exec::execute(ex5, bindns::bind(&increment, &count));
ASIO_CHECK(count == 1);
count = 0;
free_execute_non_const_executor ex6 = {};
exec::execute(ex6, bindns::bind(&increment, &count));
ASIO_CHECK(count == 1);
#endif // defined(ASIO_HAS_MOVE)
count = 0;
sender ex7;
exec::execute(ex3, bindns::bind(&increment, &count));
ASIO_CHECK(count == 1);
count = 0;
const sender ex8;
exec::execute(ex4, bindns::bind(&increment, &count));
ASIO_CHECK(count == 1);
}
ASIO_TEST_SUITE
(
"blocking",
ASIO_TEST_CASE(test_can_execute)
ASIO_TEST_CASE(test_execute)
)