TaskBlock.h

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/*
 * Copyright (c) 2018 https://www.thecoderscorner.com (Dave Cherry)..
 * This product is licensed under an Apache license, see the LICENSE file in the top-level directory.
 */
 
#ifndef _TASKMANAGERIO_TASKBLOCK_H_
#define _TASKMANAGERIO_TASKBLOCK_H_
 
#include "TaskPlatformDeps.h"
#include "TaskTypes.h"


class TaskBlock {
private:
    TimerTask tasks[DEFAULT_TASK_SIZE];
    const taskid_t first;
    const taskid_t tasksSize;
public:
    explicit TaskBlock(taskid_t first_) : first(first_), tasksSize(DEFAULT_TASK_SIZE) {}

    bool isTaskContained(taskid_t task) const {
        return task >= first && task < (first + tasksSize);
    };
 
    TimerTask* getContainedTask(taskid_t task) {
        return isTaskContained(task) ? &tasks[task - first] : nullptr;
    }
 
    void clearAll() {
        for(taskid_t i=0; i<tasksSize;i++) {
            tasks[i].clear();
        }
    }
 
    taskid_t allocateTask() {
        for(taskid_t i=0; i<tasksSize; i++) {
            if(tasks[i].allocateIfPossible()) {
                return i + first;
            }
        }
        return TASKMGR_INVALIDID;
    }
 
    taskid_t lastSlot() const {
        return first + tasksSize - 1;
    }
 
    taskid_t firstSlot() const {
        return first;
    }
};
 
 
#endif //_TASKMANAGERIO_TASKBLOCK_H_