66 lines
1.8 KiB
Mathematica
66 lines
1.8 KiB
Mathematica
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//
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// TRTCGCDTimer.m
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// TUICalling
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//
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// Created by noah on 2021/8/24.
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//
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#import "TRTCGCDTimer.h"
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@implementation TRTCGCDTimer
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static NSMutableDictionary *trtcTimers;
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dispatch_semaphore_t trtcSemaphore;
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+ (void)initialize {
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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trtcTimers = [NSMutableDictionary dictionary];
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trtcSemaphore = dispatch_semaphore_create(1);
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});
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}
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+ (NSString *)timerTask:(void(^)(void))task
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start:(NSTimeInterval)start
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interval:(NSTimeInterval)interval
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repeats:(BOOL)repeats
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async:(BOOL)async {
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if (!task || start < 0 || (interval <= 0 && repeats)) {
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return nil;
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}
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dispatch_queue_t queue = async ? dispatch_get_global_queue(0, 0) : dispatch_get_main_queue();
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dispatch_source_t timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue);
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dispatch_semaphore_wait(trtcSemaphore, DISPATCH_TIME_FOREVER);
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NSString *timerName = [NSString stringWithFormat:@"%zd", trtcTimers.count];
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trtcTimers[timerName] = timer;
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dispatch_semaphore_signal(trtcSemaphore);
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dispatch_source_set_timer(timer, dispatch_time(DISPATCH_TIME_NOW, start * NSEC_PER_SEC), interval * NSEC_PER_SEC, 0);
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dispatch_source_set_event_handler(timer, ^{
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task();
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if (!repeats) {
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[self canelTimer:timerName];
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}
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});
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dispatch_resume(timer);
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return timerName;
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}
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+ (void)canelTimer:(NSString *)timerName {
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if (timerName.length == 0) {
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return;
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}
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dispatch_semaphore_wait(trtcSemaphore, DISPATCH_TIME_FOREVER);
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dispatch_source_t timer = trtcTimers[timerName];
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if (timer) {
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dispatch_source_cancel(timer);
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[trtcTimers removeObjectForKey:timerName];
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}
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dispatch_semaphore_signal(trtcSemaphore);
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}
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@end
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