Module cdp::profiler

Profiler

Commands

• Profiler.enable
• Profiler.disable

• Profiler.setSamplingInterval

  Changes CPU profiler sampling interval. Must be called before CPU profiles recording started.

• Profiler.start

• Profiler.stop

• Profiler.startPreciseCoverage Experimental

  Enable precise code coverage. Coverage data for JavaScript executed before enabling precise code coverage may be incomplete. Enabling prevents running optimized code and resets execution counters.

• Profiler.stopPreciseCoverage Experimental

  Disable precise code coverage. Disabling releases unnecessary execution count records and allows executing optimized code.

• Profiler.takePreciseCoverage Experimental

  Collect coverage data for the current isolate, and resets execution counters. Precise code coverage needs to have started.

• Profiler.getBestEffortCoverage Experimental

  Collect coverage data for the current isolate. The coverage data may be incomplete due to garbage collection.

Events

• Profiler.consoleProfileStarted

  Sent when new profile recording is started using console.profile() call.

• Profiler.consoleProfileFinished

Types

• ProfileNode

  Profile node. Holds callsite information, execution statistics and child nodes.

• Profile

  Profile.

• PositionTickInfo Experimental

  Specifies a number of samples attributed to a certain source position.

• CoverageRange Experimental

  Coverage data for a source range.

• FunctionCoverage Experimental

  Coverage data for a JavaScript function.

• ScriptCoverage Experimental

  Coverage data for a JavaScript script.

Structs

ConsoleProfileFinishedEvent
ConsoleProfileStartedEvent	Sent when new profile recording is started using console.profile() call.
CoverageRange	[Experimental] Coverage data for a source range.
DisableCommand
DisableResponse
EnableCommand
EnableResponse
FunctionCoverage	[Experimental] Coverage data for a JavaScript function.
GetBestEffortCoverageCommand	[Experimental] Collect coverage data for the current isolate. The coverage data may be incomplete due to garbage collection.
GetBestEffortCoverageResponse	[Experimental] Collect coverage data for the current isolate. The coverage data may be incomplete due to garbage collection.
PositionTickInfo	[Experimental] Specifies a number of samples attributed to a certain source position.
Profile	Profile.
ProfileNode	Profile node. Holds callsite information, execution statistics and child nodes.
ScriptCoverage	[Experimental] Coverage data for a JavaScript script.
SetSamplingIntervalCommand	Changes CPU profiler sampling interval. Must be called before CPU profiles recording started.
SetSamplingIntervalResponse	Changes CPU profiler sampling interval. Must be called before CPU profiles recording started.
StartCommand
StartPreciseCoverageCommand	[Experimental] Enable precise code coverage. Coverage data for JavaScript executed before enabling precise code coverage may be incomplete. Enabling prevents running optimized code and resets execution counters.
StartPreciseCoverageResponse	[Experimental] Enable precise code coverage. Coverage data for JavaScript executed before enabling precise code coverage may be incomplete. Enabling prevents running optimized code and resets execution counters.
StartResponse
StopCommand
StopPreciseCoverageCommand	[Experimental] Disable precise code coverage. Disabling releases unnecessary execution count records and allows executing optimized code.
StopPreciseCoverageResponse	[Experimental] Disable precise code coverage. Disabling releases unnecessary execution count records and allows executing optimized code.
StopResponse
TakePreciseCoverageCommand	[Experimental] Collect coverage data for the current isolate, and resets execution counters. Precise code coverage needs to have started.
TakePreciseCoverageResponse	[Experimental] Collect coverage data for the current isolate, and resets execution counters. Precise code coverage needs to have started.