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Start a new stackful coroutine.
Start a new stackful coroutine that executes on a given executor.
template< typename Executor, typename F, typename CompletionToken = default_completion_token_t<Executor>> auto spawn( const Executor & ex, F && function, CompletionToken && token = default_completion_token_t< Executor >(), constraint_t< is_executor< Executor >::value||execution::is_executor< Executor >::value > = 0); » more...
Start a new stackful coroutine that executes on a given execution context.
template< typename ExecutionContext, typename F, typename CompletionToken = default_completion_token_t< typename ExecutionContext::executor_type>> auto spawn( ExecutionContext & ctx, F && function, CompletionToken && token = default_completion_token_t< typename ExecutionContext::executor_type >(), constraint_t< is_convertible< ExecutionContext &, execution_context & >::value > = 0); » more...
Start a new stackful coroutine, inheriting the executor of another.
template< typename Executor, typename F, typename CompletionToken = default_completion_token_t<Executor>> auto spawn( const basic_yield_context< Executor > & ctx, F && function, CompletionToken && token = default_completion_token_t< Executor >(), constraint_t< is_executor< Executor >::value||execution::is_executor< Executor >::value > = 0); » more...
Start a new stackful coroutine that executes on a given executor.
template< typename Executor, typename StackAllocator, typename F, typename CompletionToken = default_completion_token_t<Executor>> auto spawn( const Executor & ex, allocator_arg_t , StackAllocator && stack_allocator, F && function, CompletionToken && token = default_completion_token_t< Executor >(), constraint_t< is_executor< Executor >::value||execution::is_executor< Executor >::value > = 0); » more...
Start a new stackful coroutine that executes on a given execution context.
template< typename ExecutionContext, typename StackAllocator, typename F, typename CompletionToken = default_completion_token_t< typename ExecutionContext::executor_type>> auto spawn( ExecutionContext & ctx, allocator_arg_t , StackAllocator && stack_allocator, F && function, CompletionToken && token = default_completion_token_t< typename ExecutionContext::executor_type >(), constraint_t< is_convertible< ExecutionContext &, execution_context & >::value > = 0); » more...
Start a new stackful coroutine, inheriting the executor of another.
template< typename Executor, typename StackAllocator, typename F, typename CompletionToken = default_completion_token_t<Executor>> auto spawn( const basic_yield_context< Executor > & ctx, allocator_arg_t , StackAllocator && stack_allocator, F && function, CompletionToken && token = default_completion_token_t< Executor >(), constraint_t< is_executor< Executor >::value||execution::is_executor< Executor >::value > = 0); » more...
(Deprecated: Use overloads with a completion token.) Start a new stackful coroutine, calling the specified handler when it completes.
template< typename Function> void spawn( Function && function, const boost::coroutines::attributes & attributes = boost::coroutines::attributes()); » more... template< typename Handler, typename Function> void spawn( Handler && handler, Function && function, const boost::coroutines::attributes & attributes = boost::coroutines::attributes(), constraint_t< !is_executor< decay_t< Handler > >::value &&!execution::is_executor< decay_t< Handler > >::value &&!is_convertible< Handler &, execution_context & >::value > = 0); » more...
(Deprecated: Use overloads with a completion token.) Start a new stackful coroutine, inheriting the execution context of another.
template< typename Executor, typename Function> void spawn( basic_yield_context< Executor > ctx, Function && function, const boost::coroutines::attributes & attributes = boost::coroutines::attributes()); » more...
(Deprecated: Use overloads with a completion token.) Start a new stackful coroutine that executes on a given executor.
template< typename Function, typename Executor> void spawn( const Executor & ex, Function && function, const boost::coroutines::attributes & attributes = boost::coroutines::attributes(), constraint_t< is_executor< Executor >::value||execution::is_executor< Executor >::value > = 0); » more...
(Deprecated: Use overloads with a completion token.) Start a new stackful coroutine that executes on a given strand.
template< typename Function, typename Executor> void spawn( const strand< Executor > & ex, Function && function, const boost::coroutines::attributes & attributes = boost::coroutines::attributes()); » more...
(Deprecated: Use overloads with a completion token.) Start a new stackful coroutine that executes in the context of a strand.
template< typename Function> void spawn( const asio::io_context::strand & s, Function && function, const boost::coroutines::attributes & attributes = boost::coroutines::attributes()); » more...
(Deprecated: Use overloads with a completion token.) Start a new stackful coroutine that executes on a given execution context.
template< typename Function, typename ExecutionContext> void spawn( ExecutionContext & ctx, Function && function, const boost::coroutines::attributes & attributes = boost::coroutines::attributes(), constraint_t< is_convertible< ExecutionContext &, execution_context & >::value > = 0); » more...
The spawn
function is a high-level wrapper over the Boost.Coroutine library. This function
enables programs to implement asynchronous logic in a synchronous manner,
as illustrated by the following example:
asio::spawn(my_strand, do_echo, asio::detached); // ... void do_echo(asio::yield_context yield) { try { char data[128]; for (;;) { std::size_t length = my_socket.async_read_some( asio::buffer(data), yield); asio::async_write(my_socket, asio::buffer(data, length), yield); } } catch (std::exception& e) { // ... } }
Header: asio/impl/spawn.hpp
Convenience header: asio.hpp