//
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// Timer.m
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// MQTTClient
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//
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// Created by Josip Cavar on 06/11/2017.
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// Copyright © 2017 Christoph Krey. All rights reserved.
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//
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#import "GCDTimer.h"
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@interface GCDTimer ()
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@property (strong, nonatomic) dispatch_source_t timer;
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@end
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@implementation GCDTimer
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+ (GCDTimer *)scheduledTimerWithTimeInterval:(NSTimeInterval)interval
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repeats:(BOOL)repeats
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queue:(dispatch_queue_t)queue
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block:(void (^)(void))block {
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GCDTimer *timer = [[GCDTimer alloc] initWithInterval:interval
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repeats:repeats
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queue:queue
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block:block];
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return timer;
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}
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- (instancetype)initWithInterval:(NSTimeInterval)interval
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repeats:(BOOL)repeats
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queue:(dispatch_queue_t)queue
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block:(void (^)(void))block {
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self = [super init];
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if (self) {
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self.timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue);
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dispatch_source_set_timer(self.timer, dispatch_time(DISPATCH_TIME_NOW, interval * NSEC_PER_SEC), interval * NSEC_PER_SEC, 0);
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dispatch_source_set_event_handler(self.timer, ^{
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if (!repeats) {
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dispatch_source_cancel(self.timer);
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}
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block();
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});
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dispatch_resume(self.timer);
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}
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return self;
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}
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- (void)dealloc {
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[self invalidate];
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}
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- (void)invalidate {
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if (self.timer) {
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dispatch_source_cancel(self.timer);
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}
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}
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@end
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