mxSignpostAnimationIntervalBegin(dso:log:name:signpostID:_:_:)
Posts the start time of an animation interval to the log system.
Declaration
func mxSignpostAnimationIntervalBegin(dso: UnsafeRawPointer = #dsohandle, log: OSLog, name: StaticString, signpostID: OSSignpostID = .exclusive, _ format: StaticString = "isAnimation=YES \n%{public, signpost:metrics}@", _ arguments: [any CVarArg] = [Unmanaged<NSObject>.fromOpaque(_MXSignpostMetricsSnapshot()).takeUnretainedValue()])Parameters
- dso:
A parameter for internal system use.
- log:
A log object to log the signpost to.
- name:
A string containing the developer-assigned name of the custom event.
- signpostID:
A parameter for internal system use.
- format:
A parameter for internal system use.
- arguments:
An array of arguments with a format string, followed by the expected number of arguments in the order that they appear in the string.
Discussion
Call this function to mark the beginning of an animation interval in the metric kit log. Provide a log that you create with makeLogHandle(category:), a name for the event, and variable arguments for os_signpost_event_emit. Don’t alter the parameters dso, signpostID, or format.