mysql::scheduler::Dependency_tracker_stub Class Reference

Dependency tracker stub: empty tracker, does not check dependencies. More...

#include <dependency_tracker_stub.h>

Inheritance diagram for mysql::scheduler::Dependency_tracker_stub:

Public Member Functions
bool	add_dependency (const Task_id_type &, const Task_id_type &) override
	add_dependency More...
bool	activate_task (const Task_id &) override
	Register task in the system to prevent adding dependencies on non-existing tasks and adding active dependencies on tasks that are already finished. More...
bool	check_ready (const Task_id &) override
	check_ready More...
std::vector< Task_id >	mark_dependency_met (const Task_id &, bool) override
	Task is finished, mark all dependencies of this task as met. More...
virtual	~Dependency_tracker_stub () override=default
Public Member Functions inherited from mysql::scheduler::Base_dependency_tracker
virtual	~Base_dependency_tracker ()=default
	Destructor. More...

Additional Inherited Members
Public Types inherited from mysql::scheduler::Base_dependency_tracker
using	Task_id_type = Task_id
using	Mutex_type = concurrency::Mutex

Detailed Description

Dependency tracker stub: empty tracker, does not check dependencies.

Constructor & Destructor Documentation

~Dependency_tracker_stub()

virtual mysql::scheduler::Dependency_tracker_stub::~Dependency_tracker_stub ( )

overridevirtualdefault

Member Function Documentation

activate_task()

bool mysql::scheduler::Dependency_tracker_stub::activate_task ( const Task_id &  task )

inlineoverridevirtual

Register task in the system to prevent adding dependencies on non-existing tasks and adding active dependencies on tasks that are already finished.

Implements mysql::scheduler::Base_dependency_tracker.

add_dependency()

bool mysql::scheduler::Dependency_tracker_stub::add_dependency ( const Task_id_type &  predecessor, const Task_id_type &  successor  )

inlineoverridevirtual

add_dependency

Function adds dependency if valid

Parameters

predecessor	Predecessor task ID
successor	Successor task ID

Return values

true	Dependency added successfully
false	Failed to add dependency

Implements mysql::scheduler::Base_dependency_tracker.

check_ready()

bool mysql::scheduler::Dependency_tracker_stub::check_ready ( const Task_id &  task )

inlineoverridevirtual

check_ready

Function checks whether a task is ready for execution

Parameters

task

Task ID

Returns

true - dependencies of task are met, false - not met, second is

Implements mysql::scheduler::Base_dependency_tracker.

mark_dependency_met()

std::vector< Task_id > mysql::scheduler::Dependency_tracker_stub::mark_dependency_met ( const Task_id &  task, bool  is_finished  )

inlineoverridevirtual

Task is finished, mark all dependencies of this task as met.

Parameters

task	Identifier of a task that finished its execution
is_finished	Whether the task has finished execution

Returns

Vector of task IDs whose dependencies changed

Implements mysql::scheduler::Base_dependency_tracker.

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

• libs/mysql/scheduler/dependency_tracker_stub.h