# CallStackFrame A single frame within a call stack thread. ``` struct CallStackFrame ``` ## Discussion Each frame may have sub-frames that form a call tree. The [`binaryUUID`](/documentation/MetricKit/CallStackFrame/binaryUUID) references binary metadata in the parent [`binaryInfo`](/documentation/MetricKit/CallStackTree/binaryInfo-swift.property) dictionary. Use [`binaryName(from:)`](/documentation/MetricKit/CallStackFrame/binaryName(from:)) to look up the binary name for a given frame: ```swift if let name = frame.binaryName(from: tree) { print(name) } ``` ## Topics ### Frame details [`let binaryUUID: UUID?`](/documentation/MetricKit/CallStackFrame/binaryUUID) Binary UUID (references CallStackTree.binaryInfo) [`let address: UInt64?`](/documentation/MetricKit/CallStackFrame/address) Absolute address [`let offsetIntoBinaryTextSegment: UInt64?`](/documentation/MetricKit/CallStackFrame/offsetIntoBinaryTextSegment) Offset into binary text segment [`let sampleCount: Int?`](/documentation/MetricKit/CallStackFrame/sampleCount) Sample count (for sampled stack traces) ### Tree navigation [`let subFrames: ContiguousArray`](/documentation/MetricKit/CallStackFrame/subFrames) Sub-frames (children in the call tree) [`func binaryName(from: CallStackTree) -> String?`](/documentation/MetricKit/CallStackFrame/binaryName(from:)) Binary name - look up from tree ## Relationships ### Conforms To [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`Hashable`](/documentation/Swift/Hashable) [`Decodable`](/documentation/Swift/Decodable) [`Equatable`](/documentation/Swift/Equatable) [`Encodable`](/documentation/Swift/Encodable) [`Sendable`](/documentation/Swift/Sendable) --- 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)