ref: Add DispatchQueue property

Sources/Sentry/SentryTracer.m

@@ -70,6 +70,7 @@
 @property (nonatomic) BOOL wasFinishCalled;
 @property (nonatomic, nullable, strong) NSTimer *deadlineTimer;
 @property (nonnull, strong) SentryTracerConfiguration *configuration;
+@property (nonatomic, strong) SentryDispatchQueueWrapper *dispatchQueue;
 
 #if SENTRY_TARGET_PROFILING_SUPPORTED
 @property (nonatomic) BOOL isProfiling;
@@ -128,6 +129,7 @@ - (instancetype)initWithTransactionContext:(SentryTransactionContext *)transacti
     }
 
     _configuration = configuration;
+    _dispatchQueue = SentryDependencyContainer.sharedInstance.dispatchQueueWrapper;
 
     self.transactionContext = transactionContext;
     _children = [[NSMutableArray alloc] init];
@@ -195,36 +197,31 @@ - (void)dispatchIdleTimeout
 {
     @synchronized(_idleTimeoutLock) {
         if (_idleTimeoutBlock != NULL) {
-            [SentryDependencyContainer.sharedInstance.dispatchQueueWrapper
-                dispatchCancel:_idleTimeoutBlock];
+            [_dispatchQueue dispatchCancel:_idleTimeoutBlock];
         }
         __weak SentryTracer *weakSelf = self;
-        _idleTimeoutBlock =
-            [SentryDependencyContainer.sharedInstance.dispatchQueueWrapper createDispatchBlock:^{
-                if (weakSelf == nil) {
-                    SENTRY_LOG_DEBUG(@"WeakSelf is nil. Not doing anything.");
-                    return;
-                }
-                [weakSelf finishInternal];
-            }];
+        _idleTimeoutBlock = [_dispatchQueue createDispatchBlock:^{
+            if (weakSelf == nil) {
+                SENTRY_LOG_DEBUG(@"WeakSelf is nil. Not doing anything.");
+                return;
+            }
+            [weakSelf finishInternal];
+        }];
 
         if (_idleTimeoutBlock == NULL) {
             SENTRY_LOG_WARN(@"Couldn't create idle time out block. Can't schedule idle timeout. "
                             @"Finishing transaction");
             // If the transaction has no children, the SDK will discard it.
             [self finishInternal];
         } else {
-            [SentryDependencyContainer.sharedInstance.dispatchQueueWrapper
-                dispatchAfter:_configuration.idleTimeout
-                        block:_idleTimeoutBlock];
+            [_dispatchQueue dispatchAfter:_configuration.idleTimeout block:_idleTimeoutBlock];
         }
     }
 }
 
 - (BOOL)hasIdleTimeout
 {
-    return _configuration.idleTimeout > 0
-        && SentryDependencyContainer.sharedInstance.dispatchQueueWrapper != nil;
+    return _configuration.idleTimeout > 0;
 }
 
 - (BOOL)isAutoGeneratedTransaction
@@ -245,7 +242,7 @@ - (void)cancelIdleTimeout
 - (void)startDeadlineTimer
 {
     __weak SentryTracer *weakSelf = self;
-    [SentryDependencyContainer.sharedInstance.dispatchQueueWrapper dispatchOnMainQueue:^{
+    [_dispatchQueue dispatchOnMainQueue:^{
         weakSelf.deadlineTimer = [weakSelf.configuration.timerFactory
             scheduledTimerWithTimeInterval:SENTRY_AUTO_TRANSACTION_DEADLINE
                                    repeats:NO
@@ -287,7 +284,7 @@ - (void)cancelDeadlineTimer
 
     // The timer must be invalidated from the thread on which the timer was installed, see
     // https://developer.apple.com/documentation/foundation/nstimer/1415405-invalidate#1770468
-    [SentryDependencyContainer.sharedInstance.dispatchQueueWrapper dispatchOnMainQueue:^{
+    [_dispatchQueue dispatchOnMainQueue:^{
         if (weakSelf == nil) {
             SENTRY_LOG_DEBUG(@"WeakSelf is nil. Not invalidating deadlineTimer.");
             return;