Logs a point of interest in your code as a time interval or as an event for debugging performance in Instruments, and includes a detailed message.
- iOS 12.0+
- macOS 10.14+
- Mac Catalyst 13.0+
- tvOS 12.0+
- watchOS 5.0+
- Xcode 10.0+
The type of signpost to log.
A log object to log the signpost to.
The name of the signpost.
A signpost identifier you use to disambiguate between signposts with the same name.
A constant string or format string that produces a human-readable log message.
formatis a constant string, do not specify arguments.
formatis a format string, pass the expected number of arguments in the order that they appear in the string.