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sbt, the interactive build tool
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Ethan Atkins 8518c4b4fd Place scalatest framework jar in its own classloader 
Closing the ManagedClassLoader generated by test can cause nonlocal
effects because the jdk shares some JarFile resources across multiple
URLClassLoaders. As a result, if one classloader is trying to load a
resource and the classloader is closed, it might cause the resource
loading to fail (see https://github.com/sbt/sbt/issues/5262). This can
be fixed by moving the scalatest framework jar (and its dependencies)
into an additional classloader layer that sits between the scala library
loader and the rest of the test dependencies.

In addition to adding the new layer, I reworked the
ReverseLookupClassLoader to use its dependent classloader to find
resources that may below it in the classloading hierarchy rather than
constructing an entirely new classloader for resources.

After this change, I was able to run test in the repro project:
https://github.com/rjmac/sbt-5262 1000 times with no failures. Note that
the repro is sensitive to the jdk used. I could not reproduce with jdk11
but I could typically induce a failure within 20 or so runs with jdk8.

I benchmarked this change with
https://github.com/eatkins/scala-build-watch-performance and performance
was roughly the same as 1.3.4 with turbo mode and about 200-250ms faster
in non-turbo mode (which can be explained by the time to load the
scalatest classes).
 		2019-12-06 11:41:44 -08:00
.github/ISSUE_TEMPLATE Auto-label bug reports & delete old issue template 2019-06-04 08:01:18 +01:00
core-macros/src/main/scala/sbt/internal/util/appmacro apply -Yno-lub 2019-10-13 23:46:23 -04:00
internal apply -Yno-lub 2019-10-13 23:46:23 -04:00
launch Adds sbt.boot.lock sysprop to opt-out 2018-02-08 13:02:39 +00:00
licenses move remaining pieces of sbt subproject to sbt_pending and fix notices 2010-09-21 21:55:50 -04:00
main Place scalatest framework jar in its own classloader 2019-12-06 11:41:44 -08:00
main-actions/src apply -Yno-lub 2019-10-13 23:46:23 -04:00
main-command/src apply -Yno-lub 2019-10-13 23:46:23 -04:00
main-settings/src apply -Yno-lub 2019-10-13 23:46:23 -04:00
notes Set swoval.tmpdir with absolute path via globalBasePath (#5048) 2019-09-09 14:13:34 -04:00
project Merge pull request #5256 from eatkins/scalafmt 2019-11-30 23:27:52 -05:00
protocol/src/main Bump scalafmt 2019-11-30 14:57:20 -08:00
run apply -Yno-lub 2019-10-13 23:46:23 -04:00
sbt/src Support input tasks in cross (+) command 2019-12-03 10:47:15 -08:00
scripted-plugin/src/main/scala/sbt -Xfatal-warnings in most subprojects 2018-09-18 11:47:55 -04:00
scripted-sbt-old/src/main/scala/sbt/test Update header 2018-09-14 04:53:36 -04:00
scripted-sbt-redux Support input tasks in cross (+) command 2019-12-03 10:47:15 -08:00
src/main/conscript sbt 1.3.0 2019-09-04 01:24:08 -04:00
tasks apply -Yno-lub 2019-10-13 23:46:23 -04:00
tasks-standard apply -Yno-lub 2019-10-13 23:46:23 -04:00
testing apply -Yno-lub 2019-10-13 23:46:23 -04:00
vscode-sbt-scala fix typo 2019-06-06 08:05:16 +03:00
zinc-lm-integration/src apply -Yno-lub 2019-10-13 23:46:23 -04:00
.appveyor.yml Drop Visual Studio 2015 testing 2019-09-19 13:37:11 -04:00
.gitattributes remove gittatributes, assume core.autocrlf=false 2018-06-26 17:38:05 +03:00
.gitignore add .idea to .gitignore 2019-08-16 00:57:05 +03:00
.java-version Configure JVM 1.8 in .java-version 2016-10-07 08:48:23 -05:00
.mailmap Add mailmap 2019-06-11 09:30:14 +02:00
.sbtopts Use .sbtopts to increase the RAM 2018-06-25 19:40:15 -04:00
.scalafmt.conf Bump scalafmt 2019-11-30 14:57:20 -08:00
.travis.yml Bump scalafmt 2019-11-30 14:57:20 -08:00
CONTRIBUTING.md Split some of the developing related docs to DEVELOPING.md 2019-07-15 12:39:41 -04:00
DEVELOPING.md Update DEVELOPING about nightlies (#5133) 2019-09-25 23:19:58 -04:00
LICENSE Apache License 2.0 2018-09-14 03:38:58 -04:00
NOTICE Apache License 2.0 2018-09-14 03:38:58 -04:00
PROFILING.md fix typo 2018-07-08 22:18:57 +09:00
README.md fix typo 2019-06-06 08:05:16 +03:00
SUPPORT.md Split support into SUPPORT.md 2018-04-25 14:55:09 +01:00
build.sbt Give a more precise type to mkIvyConfiguration 2019-12-05 18:14:56 +01:00
reset.sh 1.0.3-SNAPSHOT 2017-09-16 15:52:58 -04:00
sbt-allsources.sh Bump underlying modules to latest 2017-03-23 12:41:24 -04:00
server.md setting query is "sbt/setting" 2017-10-03 01:45:06 -04:00

README.md

Build Status Latest version Gitter Chat

sbt

sbt is a build tool for Scala, Java, and more.

For general documentation, see http://www.scala-sbt.org/.

sbt 1.x

This is the 1.x series of sbt. The source code of sbt is split across several GitHub repositories, including this one.

  • sbt/io hosts sbt.io module.
  • sbt/util hosts a collection of internally used modules.
  • sbt/librarymanagement hosts sbt.librarymanagement module that wraps Ivy.
  • sbt/zinc hosts Zinc, an incremental compiler for Scala.
  • sbt/sbt, this repository hosts modules that implements the build tool.

Other links

  • Setup: Describes getting started with the latest binary release.
  • FAQ: Explains how to get help and more.
  • sbt/sbt-zero-seven: hosts sbt 0.7.7 and earlier versions

Issues and Pull Requests

Please read CONTRIBUTING carefully before opening a GitHub Issue.

The short version: try searching or asking on StackOverflow.

license

See LICENSE.