SystemTraceRequestBuilder

@RequiresApi(api = 35)
class SystemTraceRequestBuilder : ProfilingRequestBuilder

kotlin.Any
   ↳ androidx.core.os.ProfilingRequestBuilder
     ↳ androidx.core.os.SystemTraceRequestBuilder

Request builder to create a request for a system trace from ProfilingManager.

val listener =  Consumer<ProfilingResult> { profilingResult ->  if (profilingResult.errorCode == ProfilingResult.ERROR_NONE) {  doSomethingWithMyFile(profilingResult.resultFilePath)  } else {  doSomethingWithFailure(profilingResult.errorCode, profilingResult.errorMessage)  }  } val cancellationSignal = CancellationSignal() requestProfiling(  context,  SystemTraceRequestBuilder()  .setBufferSizeKb(1000 /* Requested buffer size in KB */)  .setDurationMs(60 * 1000 /* Requested profiling duration in millisconds */)  .setBufferFillPolicy(BufferFillPolicy.RING_BUFFER /* Buffer fill policy */)  .setTag("tag" /* Caller supplied tag for identification */)  .setCancellationSignal(cancellationSignal)  .build(),  Dispatchers.IO.asExecutor(), // Your choice of executor for the callback to occur on.  listener, ) // Optionally, wait for something interesting to happen and then stop the profiling to receive // the result as is. cancellationSignal.cancel()

Summary

Public constructors

Public functions
SystemTraceRequestBuilder

Set the buffer fill policy.
SystemTraceRequestBuilder
setBufferSizeKb(bufferSizeKb: Int)

Set the buffer size in kilobytes for this profiling request.
SystemTraceRequestBuilder
setDurationMs(durationMs: Int)

Set the duration in milliseconds for this profiling request.

Inherited functions
From androidx.core.os.ProfilingRequestBuilder
ProfilingRequest

Build the ProfilingRequest object which can be used with requestProfiling to request profiling.
SystemTraceRequestBuilder

Set a CancellationSignal to request cancellation of the requested trace.
SystemTraceRequestBuilder
setTag(tag: String)

Add data to help identify the output.

Public constructors

SystemTraceRequestBuilder

Added in 1.15.0
SystemTraceRequestBuilder()

Public functions

setBufferFillPolicy

Added in 1.15.0
fun setBufferFillPolicy(bufferFillPolicy: BufferFillPolicy): SystemTraceRequestBuilder

Set the buffer fill policy.

setBufferSizeKb

Added in 1.15.0
fun setBufferSizeKb(bufferSizeKb: Int): SystemTraceRequestBuilder

Set the buffer size in kilobytes for this profiling request.

setDurationMs

Added in 1.15.0
fun setDurationMs(durationMs: Int): SystemTraceRequestBuilder

Set the duration in milliseconds for this profiling request.