自 2025 年 3 月 27 日起，我們建議您使用 android-latest-release 而非 aosp-main 建構及貢獻 AOSP。詳情請參閱「Android 開放原始碼計畫變更」。
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
SemaphoreTokenTargetPreparer
public
class
SemaphoreTokenTargetPreparer
extends BaseTargetPreparer
這是用於使用權杖，在 tradefed 主機中序列化測試執行作業的預備程序。只有取得權杖的裝置才能啟動測試。其他人則必須等到該資源釋出。如果您在 tradefed 中只有一個測試，且使用共用資源，則無法使用此方法。請確認主機上只執行單一測試，且使用不同的 DUT。使用者需要在指令檔案中新增 --semaphore-token:no-disable。
摘要
公用建構函式
SemaphoreTokenTargetPreparer
public SemaphoreTokenTargetPreparer ()
公用方法
public void tearDown (TestInformation testInfo,
Throwable e)
| 參數 |
|---|
testInfo |
TestInformation |
e |
Throwable |
這個頁面中的內容和程式碼範例均受《內容授權》中的授權所規範。Java 與 OpenJDK 是 Oracle 和/或其關係企業的商標或註冊商標。
上次更新時間：2025-07-27 (世界標準時間)。
[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["缺少我需要的資訊","missingTheInformationINeed","thumb-down"],["過於複雜/步驟過多","tooComplicatedTooManySteps","thumb-down"],["過時","outOfDate","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["示例/程式碼問題","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-07-27 (世界標準時間)。"],[],[],null,["# SemaphoreTokenTargetPreparer\n============================\n\n\n`\npublic\n\n\nclass\nSemaphoreTokenTargetPreparer\n`\n\n\n`\n\n\n`\n\n`\n\nextends `[BaseTargetPreparer](../../../../../../reference/tradefed/com/android/tradefed/targetprep/BaseTargetPreparer.html)`\n\n\n`\n\n`\n\n\n`\n\n|---|---|--------------------------------------------------------------|\n| java.lang.Object |||\n| ↳ | [com.android.tradefed.targetprep.BaseTargetPreparer](../../../../../../reference/tradefed/com/android/tradefed/targetprep/BaseTargetPreparer.html) ||\n| | ↳ | com.android.tradefed.targetprep.SemaphoreTokenTargetPreparer |\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nThis is a preparer used to use token to serialize test excution in tradefed host. only the device\nacquire token will be allow to start the test. Others will wait until it released This can't be\nonly used when you have one test in tradefed and use shared resources. Please make sure only a\nsingle test running on the host with different DUTs User need to add --semaphore-token:no-disable\nin the command file.\n\nSummary\n-------\n\n| ### Public constructors ||\n|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|\n| ` `[SemaphoreTokenTargetPreparer](../../../../../../reference/tradefed/com/android/tradefed/targetprep/SemaphoreTokenTargetPreparer.html#SemaphoreTokenTargetPreparer())`() ` |\n\n| ### Public methods ||\n|---------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ` void` | ` `[setUp](../../../../../../reference/tradefed/com/android/tradefed/targetprep/SemaphoreTokenTargetPreparer.html#setUp(com.android.tradefed.invoker.TestInformation))`(`[TestInformation](../../../../../../reference/tradefed/com/android/tradefed/invoker/TestInformation.html)` testInfo) ` |\n| ` void` | ` `[tearDown](../../../../../../reference/tradefed/com/android/tradefed/targetprep/SemaphoreTokenTargetPreparer.html#tearDown(com.android.tradefed.invoker.TestInformation,%20java.lang.Throwable))`(`[TestInformation](../../../../../../reference/tradefed/com/android/tradefed/invoker/TestInformation.html)` testInfo, Throwable e) ` |\n\nPublic constructors\n-------------------\n\n### SemaphoreTokenTargetPreparer\n\n```\npublic SemaphoreTokenTargetPreparer ()\n```\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\nPublic methods\n--------------\n\n### setUp\n\n```\npublic void setUp (TestInformation testInfo)\n```\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Parameters ||\n|------------|--------------------------|\n| `testInfo` | `TestInformation` \u003cbr /\u003e |\n\n| Throws ||\n|----------------------------------------------------------------------------------------------------------------------------------|---|\n| [BuildError](../../../../../../reference/tradefed/com/android/tradefed/targetprep/BuildError.html) | |\n| [DeviceNotAvailableException](../../../../../../reference/tradefed/com/android/tradefed/device/DeviceNotAvailableException.html) | |\n| [TargetSetupError](../../../../../../reference/tradefed/com/android/tradefed/targetprep/TargetSetupError.html) | |\n\n### tearDown\n\n```\npublic void tearDown (TestInformation testInfo, \n Throwable e)\n```\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n| Parameters ||\n|------------|--------------------------|\n| `testInfo` | `TestInformation` \u003cbr /\u003e |\n| `e` | `Throwable` \u003cbr /\u003e |\n\n| Throws ||\n|----------------------------------------------------------------------------------------------------------------------------------|---|\n| [DeviceNotAvailableException](../../../../../../reference/tradefed/com/android/tradefed/device/DeviceNotAvailableException.html) | |"]]
