# Macros Macros for use with XPC when coding in Objective-C. ## Topics ### Objective-C macros [`XPC_ASSUME_NONNULL_BEGIN`](/documentation/XPC/XPC_ASSUME_NONNULL_BEGIN) [`XPC_ASSUME_NONNULL_END`](/documentation/XPC/XPC_ASSUME_NONNULL_END) [`XPC_BRIDGE`](/documentation/XPC/XPC_BRIDGE) [`XPC_BRIDGEREF_BEGIN`](/documentation/XPC/XPC_BRIDGEREF_BEGIN) [`XPC_BRIDGEREF_BEGIN_WITH_REF`](/documentation/XPC/XPC_BRIDGEREF_BEGIN_WITH_REF) [`XPC_BRIDGEREF_END`](/documentation/XPC/XPC_BRIDGEREF_END) [`XPC_BRIDGEREF_MIDDLE`](/documentation/XPC/XPC_BRIDGEREF_MIDDLE) [`XPC_CONSTRUCTOR`](/documentation/XPC/XPC_CONSTRUCTOR) [`XPC_COUNTEDBY`](/documentation/XPC/XPC_COUNTEDBY) [`XPC_DEBUGGER_EXCL`](/documentation/XPC/XPC_DEBUGGER_EXCL) [`XPC_DECL`](/documentation/XPC/XPC_DECL) [`XPC_DEPRECATED`](/documentation/XPC/XPC_DEPRECATED) [`XPC_ENUM`](/documentation/XPC/XPC_ENUM) [`XPC_ERROR_PEER_CODE_SIGNING_REQUIREMENT`](/documentation/XPC/XPC_ERROR_PEER_CODE_SIGNING_REQUIREMENT-c.macro) [`XPC_EXPORT`](/documentation/XPC/XPC_EXPORT) [`XPC_FLAGS_ENUM`](/documentation/XPC/XPC_FLAGS_ENUM) [`XPC_GLOBAL_OBJECT`](/documentation/XPC/XPC_GLOBAL_OBJECT) [`XPC_INLINE`](/documentation/XPC/XPC_INLINE) [`XPC_MALLOC`](/documentation/XPC/XPC_MALLOC) [`XPC_NOESCAPE`](/documentation/XPC/XPC_NOESCAPE) [`XPC_NOEXPORT`](/documentation/XPC/XPC_NOEXPORT) [`XPC_NOIMPL`](/documentation/XPC/XPC_NOIMPL) [`XPC_NOINLINE`](/documentation/XPC/XPC_NOINLINE) [`XPC_NONNULL1`](/documentation/XPC/XPC_NONNULL1) [`XPC_NONNULL10`](/documentation/XPC/XPC_NONNULL10) [`XPC_NONNULL11`](/documentation/XPC/XPC_NONNULL11) [`XPC_NONNULL2`](/documentation/XPC/XPC_NONNULL2) [`XPC_NONNULL3`](/documentation/XPC/XPC_NONNULL3) [`XPC_NONNULL4`](/documentation/XPC/XPC_NONNULL4) [`XPC_NONNULL5`](/documentation/XPC/XPC_NONNULL5) [`XPC_NONNULL6`](/documentation/XPC/XPC_NONNULL6) [`XPC_NONNULL7`](/documentation/XPC/XPC_NONNULL7) [`XPC_NONNULL8`](/documentation/XPC/XPC_NONNULL8) [`XPC_NONNULL9`](/documentation/XPC/XPC_NONNULL9) [`XPC_NONNULL_ALL`](/documentation/XPC/XPC_NONNULL_ALL) [`XPC_NONNULL_ARRAY`](/documentation/XPC/XPC_NONNULL_ARRAY) [`XPC_NORETURN`](/documentation/XPC/XPC_NORETURN) [`XPC_NOTHROW`](/documentation/XPC/XPC_NOTHROW) [`XPC_PACKED`](/documentation/XPC/XPC_PACKED) [`XPC_PRINTF`](/documentation/XPC/XPC_PRINTF) [`XPC_PURE`](/documentation/XPC/XPC_PURE) [`XPC_RETURNS_RETAINED`](/documentation/XPC/XPC_RETURNS_RETAINED) [`XPC_SENTINEL`](/documentation/XPC/XPC_SENTINEL) [`XPC_SIZEDBY`](/documentation/XPC/XPC_SIZEDBY) [`XPC_SWIFT_NAME`](/documentation/XPC/XPC_SWIFT_NAME) [`XPC_SWIFT_NOEXPORT`](/documentation/XPC/XPC_SWIFT_NOEXPORT) [`XPC_SWIFT_UNAVAILABLE`](/documentation/XPC/XPC_SWIFT_UNAVAILABLE) [`XPC_TESTEXPORT`](/documentation/XPC/XPC_TESTEXPORT) [`XPC_TESTSTATIC`](/documentation/XPC/XPC_TESTSTATIC) [`XPC_TRANSPARENT_UNION`](/documentation/XPC/XPC_TRANSPARENT_UNION) [`XPC_TYPE`](/documentation/XPC/XPC_TYPE) [`XPC_TYPE_RICH_ERROR`](/documentation/XPC/XPC_TYPE_RICH_ERROR-c.macro) [`XPC_TYPE_SESSION`](/documentation/XPC/XPC_TYPE_SESSION) [`XPC_UNAVAILABLE`](/documentation/XPC/XPC_UNAVAILABLE) [`XPC_UNSAFE_FORGE_SINGLE`](/documentation/XPC/XPC_UNSAFE_FORGE_SINGLE) [`XPC_UNSAFE_FORGE_SIZED_BY`](/documentation/XPC/XPC_UNSAFE_FORGE_SIZED_BY) [`XPC_UNUSED`](/documentation/XPC/XPC_UNUSED) [`XPC_USED`](/documentation/XPC/XPC_USED) [`XPC_WARN_RESULT`](/documentation/XPC/XPC_WARN_RESULT) [`XPC_WEAKIMPORT`](/documentation/XPC/XPC_WEAKIMPORT) ### Obsolete macros [Launch-related macros](/documentation/XPC/launch-macros) Obsolete macros for use with the launch daemon. --- 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)