seastar::smp Class Reference

Static Public Member Functions
static boost::program_options::options_description	get_options_description ()
static void	register_network_stacks ()
static void	configure (boost::program_options::variables_map vm, reactor_config cfg={})
static void	cleanup ()
static void	cleanup_cpu ()
static void	arrive_at_event_loop_end ()
static void	join_all ()
static bool	main_thread ()
template<typename Func >
static futurize_t< std::result_of_t< Func()> >	submit_to (unsigned t, smp_submit_to_options options, Func &&func) noexcept
template<typename Func >
static futurize_t< std::result_of_t< Func()> >	submit_to (unsigned t, Func &&func) noexcept
static bool	poll_queues ()
static bool	pure_poll_queues ()
static boost::integer_range< unsigned >	all_cpus () noexcept
template<typename Func >
static future	invoke_on_all (smp_submit_to_options options, Func &&func) noexcept
template<typename Func >
static future	invoke_on_all (Func &&func) noexcept
template<typename Func >
static future	invoke_on_others (unsigned cpu_id, smp_submit_to_options options, Func func) noexcept
template<typename Func >
static future	invoke_on_others (unsigned cpu_id, Func func) noexcept

Static Public Attributes
static unsigned	count

Member Function Documentation

invoke_on_all() [1/2]

template<typename Func >

static future seastar::smp::invoke_on_all ( Func &&  func )

inlinestaticnoexcept

Invokes func on all shards.

Parameters

func	the function to be invoked on each shard. May return void or future<>. Each async invocation will work with a separate copy of func.

Returns

a future that resolves when all async invocations finish.

Passes the default smp_submit_to_options to the smp::submit_to() called behind the scenes.

invoke_on_all() [2/2]

template<typename Func >

static future seastar::smp::invoke_on_all ( smp_submit_to_options  options, Func &&  func  )

inlinestaticnoexcept

Invokes func on all shards.

Parameters

options	the options to forward to the smp::submit_to() called behind the scenes.
func	the function to be invoked on each shard. May return void or future<>. Each async invocation will work with a separate copy of func.

Returns

a future that resolves when all async invocations finish.

invoke_on_others() [1/2]

template<typename Func >

static future seastar::smp::invoke_on_others ( unsigned  cpu_id, Func  func  )

inlinestaticnoexcept

Invokes func on all other shards.

Parameters

cpu_id	the cpu on which not to run the function.
func	the function to be invoked on each shard. May return void or future<>. Each async invocation will work with a separate copy of func.

Returns

a future that resolves when all async invocations finish.

Passes the default smp_submit_to_options to the smp::submit_to() called behind the scenes.

invoke_on_others() [2/2]

template<typename Func >

static future seastar::smp::invoke_on_others ( unsigned  cpu_id, smp_submit_to_options  options, Func  func  )

inlinestaticnoexcept

Invokes func on all other shards.

Parameters

cpu_id	the cpu on which not to run the function.
options	the options to forward to the smp::submit_to() called behind the scenes.
func	the function to be invoked on each shard. May return void or future<>. Each async invocation will work with a separate copy of func.

Returns

a future that resolves when all async invocations finish.

submit_to() [1/2]

template<typename Func >

static futurize_t<std::result_of_t<Func()> > seastar::smp::submit_to ( unsigned  t, Func &&  func  )

inlinestaticnoexcept

Runs a function on a remote core.

Uses default_smp_service_group() to control resource allocation.

Parameters

t	designates the core to run the function on (may be a remote core or the local core).
func	a callable to run on core t. If func is a temporary object, its lifetime will be extended by moving. This movement and the eventual destruction of func are both done in the calling core. If func is a reference, the caller must guarantee that it will survive the call.

Returns

whatever func returns, as a future<> (if func does not return a future, submit_to() will wrap it in a future<>).

submit_to() [2/2]

template<typename Func >

static futurize_t<std::result_of_t<Func()> > seastar::smp::submit_to ( unsigned  t, smp_submit_to_options  options, Func &&  func  )

inlinestaticnoexcept

Runs a function on a remote core.

Parameters

t	designates the core to run the function on (may be a remote core or the local core).
options	an smp_submit_to_options that contains options for this call.
func	a callable to run on core t. If func is a temporary object, its lifetime will be extended by moving. This movement and the eventual destruction of func are both done in the calling core. If func is a reference, the caller must guarantee that it will survive the call.

Returns

whatever func returns, as a future<> (if func does not return a future, submit_to() will wrap it in a future<>).

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The documentation for this class was generated from the following file:

• seastar/core/smp.hh