启动一个新的基于协程的执行线程。
template< typename Executor, typename T, typename AwaitableExecutor, typename CompletionToken = DEFAULT> DEDUCED co_spawn( const Executor & ex, awaitable< T, AwaitableExecutor > a, CompletionToken && token = DEFAULT, constraint_t<(is_executor< Executor >::value||execution::is_executor< Executor >::value) &&is_convertible< Executor, AwaitableExecutor >::value > = 0); » more... template< typename Executor, typename AwaitableExecutor, typename CompletionToken = DEFAULT> DEDUCED co_spawn( const Executor & ex, awaitable< void, AwaitableExecutor > a, CompletionToken && token = DEFAULT, constraint_t<(is_executor< Executor >::value||execution::is_executor< Executor >::value) &&is_convertible< Executor, AwaitableExecutor >::value > = 0); » more... template< typename ExecutionContext, typename T, typename AwaitableExecutor, typename CompletionToken = DEFAULT> DEDUCED co_spawn( ExecutionContext & ctx, awaitable< T, AwaitableExecutor > a, CompletionToken && token = DEFAULT, constraint_t< is_convertible< ExecutionContext &, execution_context & >::value &&is_convertible< typename ExecutionContext::executor_type, AwaitableExecutor >::value > = 0); » more... template< typename ExecutionContext, typename AwaitableExecutor, typename CompletionToken = DEFAULT> DEDUCED co_spawn( ExecutionContext & ctx, awaitable< void, AwaitableExecutor > a, CompletionToken && token = DEFAULT, constraint_t< is_convertible< ExecutionContext &, execution_context & >::value &&is_convertible< typename ExecutionContext::executor_type, AwaitableExecutor >::value > = 0); » more... template< typename Executor, typename F, typename CompletionToken = DEFAULT> DEDUCED co_spawn( const Executor & ex, F && f, CompletionToken && token = DEFAULT, constraint_t< is_executor< Executor >::value||execution::is_executor< Executor >::value > = 0); » more... template< typename ExecutionContext, typename F, typename CompletionToken = DEFAULT> DEDUCED co_spawn( ExecutionContext & ctx, F && f, CompletionToken && token = DEFAULT, constraint_t< is_convertible< ExecutionContext &, execution_context & >::value > = 0); » more...
头文件：boost/asio/impl/co_spawn.hpp
便捷头文件： boost/asio.hpp
