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d729f9b7ea
* Object table remove redis module * Test case for object table remove redis module * Client code for object_table_remove * Delete object notifications in plasma * Test for object deletion notifications * Fix subscribe deletion test * Address Robert's comments * free hash table entry
105 lines
3.4 KiB
C
105 lines
3.4 KiB
C
#ifndef PHOTON_ALGORITHM_H
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#define PHOTON_ALGORITHM_H
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#include "photon.h"
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#include "common/task.h"
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/* The duration that the local scheduler will wait before reinitiating a fetch
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* request for a missing task dependency. TODO(rkn): We may want this to be
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* adaptable based on the load on the local scheduler. */
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#define LOCAL_SCHEDULER_FETCH_TIMEOUT_MILLISECONDS 1000
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/* ==== The scheduling algorithm ====
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*
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* This file contains declaration for all functions and data structures
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* that need to be provided if you want to implement a new algorithms
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* for the local scheduler.
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*
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*/
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/**
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* Initialize the scheduler state.
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*
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* @return State managed by the scheduling algorithm.
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*/
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scheduling_algorithm_state *make_scheduling_algorithm_state(void);
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/**
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* Free the scheduler state.
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*
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* @param algorithm_state State maintained by the scheduling algorithm.
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* @return Void.
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*/
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void free_scheduling_algorithm_state(
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scheduling_algorithm_state *algorithm_state);
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/**
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* This function will be called when a new task is submitted by a worker for
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* execution.
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*
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* @param task Task that is submitted by the worker.
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* @return Void.
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*/
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void handle_task_submitted(local_scheduler_state *state,
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scheduling_algorithm_state *algorithm_state,
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task_spec *spec);
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/**
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* This function will be called when a task is assigned by the global scheduler
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* for execution on this local scheduler.
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*
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* @param state The state of the local scheduler.
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* @param algorithm_state State maintained by the scheduling algorithm.
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* @param task Task that is assigned by the global scheduler.
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* @return Void.
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*/
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void handle_task_scheduled(local_scheduler_state *state,
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scheduling_algorithm_state *algorithm_state,
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task_spec *spec);
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/**
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* This function is called if a new object becomes available in the local
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* plasma store.
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*
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* @param state The state of the local scheduler.
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* @param algorithm_state State maintained by the scheduling algorithm.
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* @param object_id ID of the object that became available.
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* @return Void.
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*/
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void handle_object_available(local_scheduler_state *state,
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scheduling_algorithm_state *algorithm_state,
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object_id object_id);
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/**
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* This function is called if an object is removed from the local plasma store.
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*
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* @param state The state of the local scheduler.
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* @param object_id ID of the object that was removed.
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* @return Void.
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*/
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void handle_object_removed(local_scheduler_state *state, object_id object_id);
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/**
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* This function is called when a new worker becomes available
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*
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* @param state The state of the local scheduler.
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* @param algorithm_state State maintained by the scheduling algorithm.
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* @param worker_index The index of the worker that becomes available.
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* @return Void.
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*/
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void handle_worker_available(local_scheduler_state *state,
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scheduling_algorithm_state *algorithm_state,
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int worker_index);
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/** The following methods are for testing purposes only. */
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#ifdef PHOTON_TEST
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/**
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* Get the number of tasks currently queued locally.
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*
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* @param algorithm_state State maintained by the scheduling algorithm.
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* @return The number of tasks queued locally.
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*/
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int num_tasks_in_queue(scheduling_algorithm_state *algorithm_state);
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#endif
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#endif /* PHOTON_ALGORITHM_H */
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