One caller operation's claim on the Access engine lock. More...

#include <ace_backend.h>

Public Types
enum class	STATE { IDLE , WAITING , ACQUIRED , EXPIRED }

using	CLOCK = std::chrono::steady_clock

Public Member Functions
	ACE_ENGINE_OP (CLOCK::time_point aDeadline)

bool	Busy () const
	True if the operation is waiting for the engine lock or gave up on it.

Public Attributes
const CLOCK::time_point	deadline

std::atomic< STATE >	state { STATE::IDLE }

Detailed Description

One caller operation's claim on the Access engine lock.

The deadline is fixed when the operation starts, and every job the operation submits, including the worker's exit hook after it, waits for the lock no longer than that. The state is the operation's own, so a worker abandoned by an earlier operation never touches a later one.

Definition at line 43 of file ace_backend.h.

Member Typedef Documentation

◆ CLOCK

using ACE_ENGINE_OP::CLOCK = std::chrono::steady_clock

Definition at line 45 of file ace_backend.h.

Member Enumeration Documentation

◆ STATE

enum class ACE_ENGINE_OP::STATE

strong

Enumerator
IDLE
WAITING	A job is blocked on the engine lock.
ACQUIRED	The job took the lock.
EXPIRED	The deadline passed first; never cleared.

Definition at line 47 of file ace_backend.h.

Constructor & Destructor Documentation

◆ ACE_ENGINE_OP()

ACE_ENGINE_OP::ACE_ENGINE_OP ( CLOCK::time_point aDeadline )

inlineexplicit

Definition at line 55 of file ace_backend.h.

References deadline.

Member Function Documentation

◆ Busy()

bool ACE_ENGINE_OP::Busy ( ) const

inline

True if the operation is waiting for the engine lock or gave up on it.

Definition at line 61 of file ace_backend.h.

References EXPIRED, state, and WAITING.

Member Data Documentation

◆ deadline

const CLOCK::time_point ACE_ENGINE_OP::deadline

Definition at line 67 of file ace_backend.h.

Referenced by ACE_ENGINE_OP().

◆ state

std::atomic<STATE> ACE_ENGINE_OP::state { STATE::IDLE }

Definition at line 68 of file ace_backend.h.

Referenced by Busy().

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

ace_backend.h

Public Types

Public Member Functions

Public Attributes