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If the queue is not fully drained yet force another run loop to process next batch of items

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This commit is contained in:
Michael Schneider 2016-03-21 16:58:39 -07:00
parent a9eaa9cc82
commit b3e98e9f5f
1 changed files with 30 additions and 0 deletions
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30
AsyncDisplayKit/ASRunLoopQueue.mm
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@ -12,8 +12,13 @@
#import <cstdlib> #import <cstdlib>
#import <deque> #import <deque>
#define ASRunLoopQueueLoggingEnabled 0
static void runLoopSourceCallback(void *info) { static void runLoopSourceCallback(void *info) {
// No-op // No-op
#if ASRunLoopQueueLoggingEnabled
NSLog(@"<%@> - Called runLoopSourceCallback", info);
#endif
} }
@interface ASRunLoopQueue () { @interface ASRunLoopQueue () {
@ -22,6 +27,10 @@ static void runLoopSourceCallback(void *info) {
CFRunLoopSourceRef _runLoopSource; CFRunLoopSourceRef _runLoopSource;
std::deque<id> _internalQueue; std::deque<id> _internalQueue;
ASDN::RecursiveMutex _internalQueueLock; ASDN::RecursiveMutex _internalQueueLock;
#if ASRunLoopQueueLoggingEnabled
NSTimer *_runloopQueueLoggingTimer;
#endif
} }
@property (nonatomic, copy) void (^queueConsumer)(id dequeuedItem, BOOL isQueueDrained); @property (nonatomic, copy) void (^queueConsumer)(id dequeuedItem, BOOL isQueueDrained);
@ -47,9 +56,17 @@ static void runLoopSourceCallback(void *info) {
// the queue to stop. Attaching a custom loop source to the run loop and signal it if new work needs to be done // the queue to stop. Attaching a custom loop source to the run loop and signal it if new work needs to be done
CFRunLoopSourceContext *runLoopSourceContext = (CFRunLoopSourceContext *)calloc(1, sizeof(CFRunLoopSourceContext)); CFRunLoopSourceContext *runLoopSourceContext = (CFRunLoopSourceContext *)calloc(1, sizeof(CFRunLoopSourceContext));
runLoopSourceContext->perform = runLoopSourceCallback; runLoopSourceContext->perform = runLoopSourceCallback;
#if ASRunLoopQueueLoggingEnabled
runLoopSourceContext->info = (__bridge void *)self;
#endif
_runLoopSource = CFRunLoopSourceCreate(NULL, 0, runLoopSourceContext); _runLoopSource = CFRunLoopSourceCreate(NULL, 0, runLoopSourceContext);
CFRunLoopAddSource(runloop, _runLoopSource, kCFRunLoopCommonModes); CFRunLoopAddSource(runloop, _runLoopSource, kCFRunLoopCommonModes);
free(runLoopSourceContext); free(runLoopSourceContext);
#if ASRunLoopQueueLoggingEnabled
_runloopQueueLoggingTimer = [NSTimer timerWithTimeInterval:1.0 target:self selector:@selector(checkRunLoop) userInfo:nil repeats:YES];
[[NSRunLoop mainRunLoop] addTimer:_runloopQueueLoggingTimer forMode:NSRunLoopCommonModes];
#endif
} }
return self; return self;
} }
@ -69,6 +86,13 @@ static void runLoopSourceCallback(void *info) {
_runLoopObserver = nil; _runLoopObserver = nil;
} }
#if ASRunLoopQueueLoggingEnabled
- (void)checkRunLoop
{
NSLog(@"<%@> - Jobs: %ld", self, _internalQueue.size());
}
#endif
- (void)processQueue - (void)processQueue
{ {
std::deque<id> itemsToProcess = std::deque<id>(); std::deque<id> itemsToProcess = std::deque<id>();
@ -102,6 +126,12 @@ static void runLoopSourceCallback(void *info) {
self.queueConsumer(itemsToProcess[i], isQueueDrained); self.queueConsumer(itemsToProcess[i], isQueueDrained);
} }
} }
// If the queue is not fully drained yet force another run loop to process next batch of items
if (!isQueueDrained) {
CFRunLoopSourceSignal(_runLoopSource);
CFRunLoopWakeUp(_runLoop);
}
} }
- (void)enqueue:(id)object - (void)enqueue:(id)object