66 lines
1020 B
Go
66 lines
1020 B
Go
package ccxt
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import (
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"errors"
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"sync"
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)
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type QueueElement struct {
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Cost float64
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Task chan bool
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Id string
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}
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type Queue struct {
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elements []QueueElement
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mu sync.Mutex
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}
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func NewQueue() Queue {
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return Queue{
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elements: []QueueElement{},
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}
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}
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func (q *Queue) Enqueue(element QueueElement) {
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q.mu.Lock()
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defer q.mu.Unlock()
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q.elements = append(q.elements, element)
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}
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func (q *Queue) Dequeue() (QueueElement, error) {
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q.mu.Lock()
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defer q.mu.Unlock()
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if len(q.elements) == 0 {
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return QueueElement{}, errors.New("queue is empty")
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}
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front := q.elements[0]
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q.elements = q.elements[1:]
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return front, nil
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}
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func (q *Queue) Length() int {
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q.mu.Lock()
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defer q.mu.Unlock()
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return len(q.elements)
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}
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func (q *Queue) IsEmpty() bool {
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q.mu.Lock()
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defer q.mu.Unlock()
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return len(q.elements) == 0
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}
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func (q *Queue) Peek() (QueueElement, error) {
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q.mu.Lock()
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defer q.mu.Unlock()
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if len(q.elements) == 0 {
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return QueueElement{}, errors.New("queue is empty")
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}
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return q.elements[0], nil
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}
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