TraceEvent
TraceEvent is a performance instrumentation utility provided by Lynx. Developers can use TraceEvent to flexibly insert trace points in client-side code, recording the execution timing and duration of key functions, tasks, rendering processes, and more.
Android
beginSection
Marks the start of a trace event .
public static void beginSection( String category , String name) public static void beginSection( String category , String name , Map< String , String > args) Parameters
category
The category of the trace event.
name
The name of the trace event.
args (optional)
Custom arguments for the trace event.
Examples
TraceEvent . beginSection ( "render" , "measure-layout" ); // ... your code ... TraceEvent . endSection ( "render" , "measure-layout" ); // With custom arguments Map < String , String > args = new HashMap() ; args . put ( "component" , "Image" ); args . put ( "size" , "large" ); TraceEvent . beginSection ( "render" , "draw-image" , args); // ... your code ... TraceEvent . endSection ( "render" , "draw-image" ); endSection
Marks the end of a trace event .
public static void endSection( String category , String name) Parameters
category
The category of the trace event.
name
The name of the trace event.
Examples
TraceEvent . beginSection ( "logic" , "parse-data" ); // ... your code ... TraceEvent . endSection ( "logic" , "parse-data" ); instant
Marks an instant trace event.
public static void instant( String category , String name) public static void instant( String category , String name , Map< String , String > args) Parameters
category
The category of the trace event.
name
The name of the trace event.
args(optional)
Custom arguments for the trace event.
Examples
TraceEvent . instant ( "network" , "request-started" ); // With custom arguments Map < String , String > args = new HashMap <>(); args . put ( "url" , "https://example.com" ); args . put ( "method" , "GET" ); TraceEvent . instant ( "network" , "request-finished" , args); iOS
beginSection
Marks the start of a trace event .
+ ( void )beginSection:( NSString * )category withName:( NSString * )name + ( void )beginSection:( NSString * )category withName:( NSString * )name debugInfo:( NSDictionary * )args Parameters
category
The category of the trace event.
name
The name of the trace event.
args(optional)
Custom arguments for the trace event.
Examples
[LynxTraceEvent beginSection : @"render" withName : @"measure-layout" ]; // ... your code ... [LynxTraceEvent endSection : @"render" withName : @"measure-layout" ]; // With custom arguments [LynxTraceEvent beginSection : @"render" withName : @"draw-image" debugInfo : @{ @"component" : @"Image" , @"size" : @"large" } ]; // ... your code ... [LynxTraceEvent endSection : @"render" withName : @"draw-image" ]; endSection
Marks the end of a trace event(https://perfetto.dev/docs/instrumentation/track-events ).
+ ( void )endSection:( NSString * )category withName:( NSString * )name Parameters
category
The category of the trace event.
name
The name of the trace event.
Examples
[LynxTraceEvent beginSection : @"logic" withName : @"parse-data" ]; // ... your code ... [LynxTraceEvent endSection : @"logic" withName : @"parse-data" ]; instant
Marks an instant trace event.
+ ( void )instant : (NSString * )category withName : (NSString * )name + ( void )instant : (NSString * )category withName : (NSString * )name debugInfo : (NSDictionary * )args Parameters
category
The category of the trace event.
name
The name of the trace event.
args(optional)
Custom arguments for the trace event.
Examples
[LynxTraceEvent instant : @"network" withName : @"request-started" ]; // With custom arguments [LynxTraceEvent instant : @"network" withName : @"request-finished" debugInfo : @{ @"url" : @"https://example.com" , @"method" : @"GET" } ]; Compatibility
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