A partir de 27 de março de 2025, recomendamos usar android-latest-release em vez de aosp-main para criar e contribuir com o AOSP. Para mais informações, consulte Mudanças no AOSP.
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TraceCmdCollector
public
class
TraceCmdCollector
extends AtraceCollector
Um IMetricCollector que coleta rastros durante o teste usando o trace-cmd e os registra na
invocação.
Esse coletor de rastros permite a desconexão do USB durante o teste (como no teste de energia).
A ferramenta padrão do sistema, atrace, é usada em conjunto com esse coletor para definir as
flags sysfs específicas do Android.
Um binário trace-cmd (https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git)
compatível com o Android precisa ser especificado.
Isso vai fazer o upload do formato trace.dat (consulte o man 5 trace-cmd.dat) produzido pelo trace-cmd.
Resumo
Construtores públicos
TraceCmdCollector
public TraceCmdCollector ()
Métodos protegidos
startTracing
protected void startTracing (ITestDevice device)
| Parâmetros |
|---|
device |
ITestDevice |
stopTracing
protected void stopTracing (ITestDevice device)
| Parâmetros |
|---|
device |
ITestDevice |
O conteúdo e os exemplos de código nesta página estão sujeitos às licenças descritas na Licença de conteúdo. Java e OpenJDK são marcas registradas da Oracle e/ou suas afiliadas.
Última atualização 2025-07-27 UTC.
[[["Fácil de entender","easyToUnderstand","thumb-up"],["Meu problema foi resolvido","solvedMyProblem","thumb-up"],["Outro","otherUp","thumb-up"]],[["Não contém as informações de que eu preciso","missingTheInformationINeed","thumb-down"],["Muito complicado / etapas demais","tooComplicatedTooManySteps","thumb-down"],["Desatualizado","outOfDate","thumb-down"],["Problema na tradução","translationIssue","thumb-down"],["Problema com as amostras / o código","samplesCodeIssue","thumb-down"],["Outro","otherDown","thumb-down"]],["Última atualização 2025-07-27 UTC."],[],[],null,["# TraceCmdCollector\n=================\n\n\n`\npublic\n\n\nclass\nTraceCmdCollector\n`\n\n\n`\n\n\n`\n\n`\n\n\n`\n\n`\n\nextends `[AtraceCollector](../../../../../../../reference/tradefed/com/android/tradefed/device/metric/AtraceCollector.html)`\n\n\n`\n\n`\n\n\n`\n\n|---|---|---|------------------------------------------------------|\n| java.lang.Object ||||\n| ↳ | [com.android.tradefed.device.metric.BaseDeviceMetricCollector](../../../../../../../reference/tradefed/com/android/tradefed/device/metric/BaseDeviceMetricCollector.html) |||\n| | ↳ | [com.android.tradefed.device.metric.AtraceCollector](../../../../../../../reference/tradefed/com/android/tradefed/device/metric/AtraceCollector.html) ||\n| | | ↳ | com.android.tradefed.device.metric.TraceCmdCollector |\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nA [IMetricCollector](../../../../../../../reference/tradefed/com/android/tradefed/device/metric/IMetricCollector.html) that collects traces during the test using trace-cmd, and logs them to\nthe invocation.\n\nThis trace collector allows for USB disconnection during the test (as in power testing).\n\nThe system default tool, atrace, is used in tandem with this collector to set the\nandroid-specific sysfs flags.\n\nA trace-cmd (https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git) binary\ncompatible with Android must be specified.\n\nThis will upload the trace.dat format (see man 5 trace-cmd.dat) produced by trace-cmd.\n\nSummary\n-------\n\n| ### Public constructors ||\n|----------------------------------------------------------------------------------------------------------------------------------------------------|---|\n| ` `[TraceCmdCollector](../../../../../../../reference/tradefed/com/android/tradefed/device/metric/TraceCmdCollector.html#TraceCmdCollector())`() ` |\n\n| ### Protected methods ||\n|--------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ` `[LogDataType](../../../../../../../reference/tradefed/com/android/tradefed/result/LogDataType.html) | ` `[getLogType](../../../../../../../reference/tradefed/com/android/tradefed/device/metric/TraceCmdCollector.html#getLogType())`() ` |\n| ` void` | ` `[startTracing](../../../../../../../reference/tradefed/com/android/tradefed/device/metric/TraceCmdCollector.html#startTracing(com.android.tradefed.device.ITestDevice))`(`[ITestDevice](../../../../../../../reference/tradefed/com/android/tradefed/device/ITestDevice.html)` device) ` |\n| ` void` | ` `[stopTracing](../../../../../../../reference/tradefed/com/android/tradefed/device/metric/TraceCmdCollector.html#stopTracing(com.android.tradefed.device.ITestDevice))`(`[ITestDevice](../../../../../../../reference/tradefed/com/android/tradefed/device/ITestDevice.html)` device) ` |\n\nPublic constructors\n-------------------\n\n### TraceCmdCollector\n\n```\npublic TraceCmdCollector ()\n```\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\nProtected methods\n-----------------\n\n### getLogType\n\n```\nprotected LogDataType getLogType ()\n```\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Returns ||\n|-----------------------------------------------------------------------------------------------------|--------|\n| [LogDataType](../../../../../../../reference/tradefed/com/android/tradefed/result/LogDataType.html) | \u003cbr /\u003e |\n\n### startTracing\n\n```\nprotected void startTracing (ITestDevice device)\n```\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Parameters ||\n|----------|----------------------|\n| `device` | `ITestDevice` \u003cbr /\u003e |\n\n| Throws ||\n|-------------------------------------------------------------------------------------------------------------------------------------|---|\n| [DeviceNotAvailableException](../../../../../../../reference/tradefed/com/android/tradefed/device/DeviceNotAvailableException.html) | |\n\n### stopTracing\n\n```\nprotected void stopTracing (ITestDevice device)\n```\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Parameters ||\n|----------|----------------------|\n| `device` | `ITestDevice` \u003cbr /\u003e |\n\n| Throws ||\n|-------------------------------------------------------------------------------------------------------------------------------------|---|\n| [DeviceNotAvailableException](../../../../../../../reference/tradefed/com/android/tradefed/device/DeviceNotAvailableException.html) | |"]]
