![]() If you’re not interested in a range of time, but rather a single signpost, you can just post an. end it: os_signpost_interval_end(log, identifier, "Download", "Finished %d", index) When you want to end a points of interest range, you can. Os_signpost_interval_begin(log, identifier, "Download", "Started %d", index) begin a point of interest: os_signpost_id_t identifier = os_signpost_id_generate(log) When you want to start a points of interest range, you can. ![]() Import the unified logging signposts framework: os.signpost Ĭreate an OSLog for points of interest: os_log_t log = os_log_create("ViewController", OS_LOG_CATEGORY_POINTS_OF_INTEREST) event: os_signpost(.event, log: pointsOfInterest, name: "Done", "All done") end it: os_signpost(.end, log: pointsOfInterest, name: "Download", signpostID: id, "Download %d", index) Os_signpost(.begin, log: pointsOfInterest, name: "Download", signpostID: id, "Download %d", index) begin a point of interest: let id = OSSignpostID(log: pointsOfInterest) Import the unified logging framework: import os.logĬreate an OSLog for points of interest: private let pointsOfInterest = OSLog(subsystem: !, category. This is illustrated in WWDC 2019 video Getting Started with Instruments. ![]() In iOS 13 and macOS 10.15, we can use os_signpost. Rather than using flags, we can now use programmatically inserted signposts which are captured in Instruments’ “Points of Interest” tool. ![]()
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