144 lines
4.4 KiB
Objective-C
144 lines
4.4 KiB
Objective-C
#import "TimeUtil.h"
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#import "Util.h"
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@implementation TimeUtil
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+ (NSTimeInterval)time {
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return [[NSProcessInfo processInfo] systemUptime];
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}
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+ (TOCFuture *)scheduleEvaluate:(Function)function
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afterDelay:(NSTimeInterval)delay
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onRunLoop:(NSRunLoop *)runLoop
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unlessCancelled:(TOCCancelToken *)unlessCancelledToken {
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ows_require(function != NULL);
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ows_require(runLoop != nil);
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ows_require(delay >= 0);
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TOCFutureSource *result = [TOCFutureSource futureSourceUntil:unlessCancelledToken];
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Action evaler = ^{
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[result trySetResult:function()];
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};
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[self scheduleHelper:evaler
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withPeriod:delay
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onRunLoop:runLoop
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repeating:false
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untilCancelled:unlessCancelledToken
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andRunImmediately:NO];
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return result.future;
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}
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+ (TOCFuture *)scheduleEvaluate:(Function)function
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at:(NSDate *)date
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onRunLoop:(NSRunLoop *)runLoop
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unlessCancelled:(TOCCancelToken *)unlessCancelledToken {
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ows_require(function != NULL);
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ows_require(runLoop != nil);
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ows_require(date != nil);
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NSTimeInterval delay = [date timeIntervalSinceNow];
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return [self scheduleEvaluate:function
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afterDelay:MAX(0, delay)
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onRunLoop:runLoop
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unlessCancelled:unlessCancelledToken];
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}
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+ (void)scheduleRun:(Action)action
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afterDelay:(NSTimeInterval)delay
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onRunLoop:(NSRunLoop *)runLoop
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unlessCancelled:(TOCCancelToken *)unlessCancelledToken {
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ows_require(action != NULL);
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ows_require(runLoop != nil);
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ows_require(delay >= 0);
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if (delay == INFINITY)
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return;
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[self scheduleHelper:action
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withPeriod:delay
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onRunLoop:runLoop
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repeating:false
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untilCancelled:unlessCancelledToken
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andRunImmediately:NO];
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}
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+ (void)scheduleRun:(Action)action
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at:(NSDate *)date
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onRunLoop:(NSRunLoop *)runLoop
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unlessCancelled:(TOCCancelToken *)unlessCancelledToken {
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ows_require(action != NULL);
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ows_require(runLoop != nil);
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ows_require(date != nil);
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NSTimeInterval delay = [date timeIntervalSinceNow];
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[self scheduleRun:action afterDelay:MAX(0, delay) onRunLoop:runLoop unlessCancelled:unlessCancelledToken];
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}
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+ (void)scheduleRun:(Action)action
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periodically:(NSTimeInterval)interval
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onRunLoop:(NSRunLoop *)runLoop
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untilCancelled:(TOCCancelToken *)untilCancelledToken
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andRunImmediately:(BOOL)shouldRunImmediately {
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ows_require(action != NULL);
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ows_require(runLoop != nil);
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ows_require(interval > 0);
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[self scheduleHelper:action
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withPeriod:interval
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onRunLoop:runLoop
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repeating:true
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untilCancelled:untilCancelledToken
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andRunImmediately:shouldRunImmediately];
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}
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+ (void)scheduleHelper:(Action)callback
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withPeriod:(NSTimeInterval)interval
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onRunLoop:(NSRunLoop *)runLoop
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repeating:(bool)repeats
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untilCancelled:(TOCCancelToken *)untilCancelledToken
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andRunImmediately:(BOOL)shouldRunImmediately {
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ows_require(callback != NULL);
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ows_require(runLoop != nil);
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ows_require(interval >= 0);
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ows_require(!repeats || interval > 0);
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if (untilCancelledToken.isAlreadyCancelled) {
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return;
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}
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if (!repeats && interval == 0) {
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callback();
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return;
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}
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if (shouldRunImmediately) {
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callback();
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}
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callback = [callback copy];
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__block bool hasBeenCancelled = false;
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__block NSObject *cancelLock = [NSObject new];
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Operation *callbackUnlessCancelled = [Operation operation:^{
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@synchronized(cancelLock) {
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if (hasBeenCancelled)
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return;
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callback();
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}
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}];
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NSTimer *timer = [NSTimer timerWithTimeInterval:interval
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target:callbackUnlessCancelled
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selector:[callbackUnlessCancelled selectorToRun]
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userInfo:nil
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repeats:repeats];
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[runLoop addTimer:timer forMode:NSDefaultRunLoopMode];
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[untilCancelledToken whenCancelledDo:^{
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@synchronized(cancelLock) {
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hasBeenCancelled = true;
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[timer invalidate];
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}
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}];
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}
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@end
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