hpx::distributed::latch#

Defined in header hpx/latch.hpp.

See Public API for a list of names and headers that are part of the public HPX API.

namespace hpx

Top level HPX namespace.

namespace distributed

Functions

explicit latch(std::ptrdiff_t count)#

Initialize the latch

Requires: count >= 0. Synchronization: None Postconditions: counter_ == count.

latch(hpx::id_type const &id)#

Extension: Create a client side representation for the existing server::latch instance with the given global id id.

latch(hpx::future<hpx::id_type> &&f)#

Extension: Create a client side representation for the existing server::latch instance with the given global id id.

latch(hpx::shared_future<hpx::id_type> const &id)#

Extension: Create a client side representation for the existing server::latch instance with the given global id id.

void count_down_and_wait()#

Decrements counter_ by 1 . Blocks at the synchronization point until counter_ reaches 0.

Requires: counter_ > 0.

Synchronization: Synchronizes with all calls that block on this latch and with all is_ready calls on this latch that return true.

Throws

Nothing.

void arrive_and_wait()#

Decrements counter_ by update . Blocks at the synchronization point until counter_ reaches 0.

Requires: counter_ > 0.

Synchronization: Synchronizes with all calls that block on this latch and with all is_ready calls on this latch that return true.

Throws

Nothing.

void count_down(std::ptrdiff_t n)#

Decrements counter_ by n. Does not block.

Requires: counter_ >= n and n >= 0.

Synchronization: Synchronizes with all calls that block on this latch and with all is_ready calls on this latch that return true .

Throws

Nothing.

bool is_ready() const noexcept#

Returns: counter_ == 0. Does not block.

Throws

Nothing.

bool try_wait() const noexcept#

Returns: counter_ == 0. Does not block.

Throws

Nothing.