semaphore.hpp File Reference

Table of Contents

• Detailed Description
• Classes
• Namespaces

Detailed Description

Class that allows up to max_simultaneous_locks concurrent accesses to the critical section. It ignores task cancellation, unlike CancellableSemaphore.

Definition in file semaphore.hpp.

Go to the source code of this file.

#include <atomic>
#include <chrono>
#include <shared_mutex>
#include <stdexcept>
#include <userver/engine/deadline.hpp>
#include <userver/engine/impl/wait_list_fwd.hpp>
#include <memory>
#include <userver/utils/assert.hpp>

Include dependency graph for semaphore.hpp:

This graph shows which files directly or indirectly include this file:

Classes
class	engine::UnreachableSemaphoreLockError
class	engine::SemaphoreLockCancelledError
	Thrown by engine::CancellableSemaphore on current task cancellation. More...
class	engine::CancellableSemaphore
	Class that allows up to max_simultaneous_locks concurrent accesses to the critical section. It honours task cancellation, unlike Semaphore. More...
class	engine::Semaphore
	Class that allows up to max_simultaneous_locks concurrent accesses to the critical section. It ignores task cancellation, unlike CancellableSemaphore. More...
class	engine::SemaphoreLock
	A replacement for std::shared_lock that accepts Deadline arguments. More...

Namespaces
namespace	engine
	Asynchronous engine primitives.