SBT使用play自动重载,编译时间极慢！和scala-js
发布时间：2020-12-16 08:54:47 所属栏目：安全 来源：网络整理
导读：我遇到SBT问题.我的项目是这个的一个分支： https://github.com/vmunier/play-with-scalajs-example,目前几乎完全相同.我只添加了几行代码和导入的scalatags. 当我用sbt启动服务器时,我运行该项目,这需要很多时间.自动重载功能也是如此.对于代码的任何更改,
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我遇到SBT问题.我的项目是这个的一个分支：
https://github.com/vmunier/play-with-scalajs-example,目前几乎完全相同.我只添加了几行代码和导入的scalatags.
当我用sbt启动服务器时,我运行该项目,这需要很多时间.自动重载功能也是如此.对于代码的任何更改,我每次都在谈论2到3分钟.即使对于SBT,这也太慢了. SBT版本0.13.0 这是SBT控制台中的输出 [info] Compiling 1 Scala source to /home/chobeat/git/2048-in-scala-js/scalajs/target/scala-2.10/classes... [info] Preoptimizing /home/chobeat/git/2048-in-scala-js/scalajvm/public/javascripts/scalajs/scalajs-example-preopt.js ... [warn] Referring to non-existent class scala_scalajs_test_JasmineTest [warn] Referring to non-existent method example_test_ScalaJSExampleTest$.expect__Lscala_scalajs_js_Any__Lorg_scalajs_jasmine_JasmineExpectation [warn] called from example_test_ScalaJSExampleTest$$anonfun$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp__V [warn] called from example_test_ScalaJSExampleTest$$anonfun$1$$anonfun$apply$mcV$sp$1.apply__V [warn] called from example_test_ScalaJSExampleTest$$anonfun$1$$anonfun$apply$mcV$sp$1.apply__O [warn] called from scala_Predef$.require__Z__Lscala_Function0__V [warn] called from scala_collection_Iterator$class.scala_collection_Iterator$class__copyToArray__Lscala_collection_Iterator__O__I__I__V [warn] called from scala_collection_AbstractIterator.copyToArray__O__I__I__V [warn] called from scala_collection_TraversableOnce$class.scala_collection_TraversableOnce$class__copyToArray__Lscala_collection_TraversableOnce__O__I__V [warn] called from scala_collection_AbstractTraversable.copyToArray__O__I__V [warn] called from scala_collection_TraversableOnce$class.scala_collection_TraversableOnce$class__toArray__Lscala_collection_TraversableOnce__Lscala_reflect_ClassTag__O [warn] called from scala_collection_AbstractTraversable.toArray__Lscala_reflect_ClassTag__O [warn] called from scala_collection_immutable_StringLike$class.scala_collection_immutable_StringLike$class__format__Lscala_collection_immutable_StringLike__Lscala_collection_Seq__T [warn] called from scala_collection_immutable_StringOps.format__Lscala_collection_Seq__T [warn] called from scala_collection_immutable_Range.description__p4__T [warn] called from scala_collection_immutable_Range.fail__p4__Lscala_Nothing [warn] called from scala_collection_immutable_Range.scala$collection$immutable$Range$$validateMaxLength__V [warn] called from scala_collection_immutable_Range.validateRangeBoundaries__Lscala_Function1__Z [warn] called from scala_collection_immutable_Range.foreach__Lscala_Function1__V [warn] called from scala_collection_TraversableOnce$class.scala_collection_TraversableOnce$class__foldLeft__Lscala_collection_TraversableOnce__O__Lscala_Function2__O [warn] called from scala_collection_AbstractTraversable.foldLeft__O__Lscala_Function2__O [warn] called from scala_collection_generic_TraversableForwarder$class.scala_collection_generic_TraversableForwarder$class__foldLeft__Lscala_collection_generic_TraversableForwarder__O__Lscala_Function2__O [warn] called from scala_collection_mutable_ListBuffer.foldLeft__O__Lscala_Function2__O [warn] called from scala_collection_immutable_ListSet$ListSetBuilder.result__Lscala_collection_immutable_ListSet [warn] called from scala_collection_immutable_ListSet$ListSetBuilder.result__O [warn] called from scala_collection_TraversableLike$class.scala_collection_TraversableLike$class__flatMap__Lscala_collection_TraversableLike__Lscala_Function1__Lscala_collection_generic_CanBuildFrom__O [warn] called from scala_collection_immutable_Stream.flatMap__Lscala_Function1__Lscala_collection_generic_CanBuildFrom__O [warn] called from scala_collection_immutable_Stream$StreamBuilder.result__Lscala_collection_immutable_Stream [warn] called from scala_collection_immutable_Stream$StreamBuilder.result__O [warn] called from scala_collection_generic_GenericCompanion.empty__Lscala_collection_GenTraversable [warn] called from scala_collection_generic_GenericSetTemplate$class.scala_collection_generic_GenericSetTemplate$class__empty__Lscala_collection_generic_GenericSetTemplate__Lscala_collection_GenSet [warn] called from scala_collection_AbstractSet.empty__Lscala_collection_GenSet [warn] called from scala_collection_immutable_Set$Set2.empty__Lscala_collection_Set [warn] called from scala_collection_SetLike$class.scala_collection_SetLike$class__newBuilder__Lscala_collection_SetLike__Lscala_collection_mutable_Builder [warn] called from scala_collection_AbstractSet.newBuilder__Lscala_collection_mutable_Builder [warn] called from scala_collection_IterableLike$class.scala_collection_IterableLike$class__take__Lscala_collection_IterableLike__I__O [warn] called from scala_collection_AbstractIterable.take__I__O [warn] called from scala_collection_mutable_ListBuffer.$$plus$plus$eq__Lscala_collection_TraversableOnce__Lscala_collection_mutable_ListBuffer [warn] called from scala_collection_mutable_ListBuffer.$$plus$plus$eq__Lscala_collection_TraversableOnce__Lscala_collection_generic_Growable [warn] called from scala_collection_TraversableOnce$class.scala_collection_TraversableOnce$class__to__Lscala_collection_TraversableOnce__Lscala_collection_generic_CanBuildFrom__O [warn] called from scala_collection_AbstractIterator.to__Lscala_collection_generic_CanBuildFrom__O [warn] called from scala_collection_TraversableOnce$class.scala_collection_TraversableOnce$class__toSet__Lscala_collection_TraversableOnce__Lscala_collection_immutable_Set [warn] called from scala_collection_AbstractTraversable.toSet__Lscala_collection_immutable_Set [warn] called from scala_runtime_ScalaRunTime$.init___ [warn] called from scala_scalajs_js_JavaScriptException.hashCode__I [warn] called from java_lang_Object.toString__T [warn] called from scalajs-corejslib.js [warn] involving instantiated classes: [warn] example_test_ScalaJSExampleTest$$anonfun$1$$anonfun$apply$mcV$sp$1 [warn] scala_Predef$ [warn] scala_collection_immutable_StreamIterator [warn] scala_collection_immutable_HashSet$HashSet1 [warn] scala_collection_immutable_StringOps [warn] scala_collection_immutable_Range [warn] scala_collection_mutable_ListBuffer [warn] (already seen,not repeating call stack) [warn] scala_collection_immutable_ListSet$ListSetBuilder [warn] (already seen,not repeating call stack) [warn] scala_collection_immutable_Stream$Cons [warn] (already seen,not repeating call stack) [warn] scala_collection_immutable_Stream$StreamBuilder [warn] scala_collection_Traversable$ [warn] (already seen,not repeating call stack) [warn] scala_collection_immutable_Set$Set2 [warn] (already seen,not repeating call stack) [warn] scala_collection_Iterator$$anon$2 [warn] scala_collection_immutable_Nil$ [warn] (already seen,not repeating call stack) [warn] scala_scalajs_js_JavaScriptException [warn] java_lang_Object [warn] Referring to non-existent method example_test_ScalaJSExampleTest$.describe__T__Lscala_Function0__V [warn] called from example_test_ScalaJSExampleTest$.init___ [warn] exported to JavaScript with @JSExport [warn] Referring to non-existent method example_test_ScalaJSExampleTest$.it__T__Lscala_Function0__V [warn] called from example_test_ScalaJSExampleTest$.init___ [warn] exported to JavaScript with @JSExport 解决方法
因为您使用scalatags和scala-js是非常编译器密集型库,所以当您修改需要更改的代码时,编译时间会比平时长很多.您可以采取一些措施来缓解这种情况,升级到最新版本的Play(2.2.2),sbt(0.13.1)和scala(2.10.3),它们都在编译时有所改进.如果您还没有使用增量编辑,我建议这样做(播放?运行或播放?测试快速).还要检查内存限制(Xmx和MaxPermGen)以及您使用的是最新版本的JDK(7或8).
使用最新版本我能够得到这些时间： “play test”编译了应用程序并测试并在173秒内运行所有测试 “play run”在已经编译完成后需要10秒才能启动Web应用程序 “sbt run”在已经编译完成后需要10秒才能启动Web应用程序 “sbt test”需要10-25秒 “游戏测试”需要10-17秒 “sbt compile”在清理后需要大约20秒 这些时间是在.sbtconfig中使用SBT_OPTS =“ – Xmx2048m”的Macbook Pro Retina实现的. （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |