# Deprecated Symbols ## Topics ### Functions [`extern void dispatch_debug(dispatch_object_t object, const char *message, ...);`](/documentation/Dispatch/dispatch_debug) Programmatically logs debug information about a dispatch object. [`func dispatch_get_current_queue() -> dispatch_queue_t`](/documentation/Dispatch/dispatch_get_current_queue()) Returns the queue on which the currently executing block is running. [`func dispatch_debugv(dispatch_object_t, UnsafePointer, CVaListPointer)`](/documentation/Dispatch/dispatch_debugv(_:_:_:)) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)