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Merge pull request #1254 from gkossakowski/classFileManager-logging 

Add debug logging in ClassfileManager
This commit is contained in:
Grzegorz Kossakowski 2014-04-13 16:05:18 +02:00
parent b802196f77 a7fb54e4df
commit b665b7ecee
3 changed files with 28 additions and 8 deletions
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26
compile/inc/src/main/scala/sbt/inc/ClassfileManager.scala
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@ -13,7 +13,7 @@ trait ClassfileManager
* Any empty ancestor directories of deleted files must not exist either.*/
def delete(classes: Iterable[File]): Unit
/** Called once per compilation step with the class files generated during that step.*/
/** Called once per compilation step with the class files generated during that step.*/
def generated(classes: Iterable[File]): Unit
/** Called once at the end of the whole compilation run, with `success` indicating whether compilation succeeded (true) or not (false).*/
@ -29,29 +29,45 @@ object ClassfileManager
def generated(classes: Iterable[File]) {}
def complete(success: Boolean) {}
}
@deprecated("Use overloaded variant that takes additional logger argument, instead.", "0.13.5")
def transactional(tempDir0: File): () => ClassfileManager =
transactional(tempDir0, sbt.Logger.Null)
/** When compilation fails, this ClassfileManager restores class files to the way they were before compilation.*/
def transactional(tempDir0: File): () => ClassfileManager = () => new ClassfileManager
def transactional(tempDir0: File, logger: sbt.Logger): () => ClassfileManager = () => new ClassfileManager
{
val tempDir = tempDir0.getCanonicalFile
IO.delete(tempDir)
IO.createDirectory(tempDir)
logger.debug(s"Created transactional ClassfileManager with tempDir = $tempDir")
private[this] val generatedClasses = new mutable.HashSet[File]
private[this] val movedClasses = new mutable.HashMap[File, File]
private def showFiles(files: Iterable[File]): String = files.map(f => s"\t$f").mkString("\n")
def delete(classes: Iterable[File])
{
for(c <- classes) if(c.exists && !movedClasses.contains(c) && !generatedClasses(c))
logger.debug(s"About to delete class files:\n${showFiles(classes)}")
val toBeBackedUp = classes.filter(c => c.exists && !movedClasses.contains(c) && !generatedClasses(c))
logger.debug(s"We backup classs files:\n${showFiles(toBeBackedUp)}")
for(c <- toBeBackedUp) {
movedClasses.put(c, move(c))
}
IO.deleteFilesEmptyDirs(classes)
}
def generated(classes: Iterable[File]): Unit = generatedClasses ++= classes
def generated(classes: Iterable[File]): Unit = {
logger.debug(s"Registering generated classes:\n${showFiles(classes)}")
generatedClasses ++= classes
}
def complete(success: Boolean)
{
if(!success) {
logger.debug("Rolling back changes to class files.")
logger.debug(s"Removing generated classes:\n${showFiles(generatedClasses)}")
IO.deleteFilesEmptyDirs(generatedClasses)
logger.debug(s"Restoring class files: \n${showFiles(movedClasses.map(_._1))}")
for( (orig, tmp) <- movedClasses ) IO.move(tmp, orig)
}
logger.debug(s"Removing the temporary directory used for backing up class files: $tempDir")
IO.delete(tempDir)
}

7
compile/inc/src/main/scala/sbt/inc/IncOptions.scala
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@ -234,9 +234,12 @@ object IncOptions extends Serializable {
private def readResolve(): Object = IncOptions
//- EXPANDED CASE CLASS METHOD END -//
def defaultTransactional(tempDir: File): IncOptions = setTransactional(Default, tempDir)
@deprecated("Use IncOptions.Default.withNewClassfileManager(ClassfileManager.transactional(tempDir)), instead.", "0.13.5")
def defaultTransactional(tempDir: File): IncOptions =
setTransactional(Default, tempDir)
@deprecated("Use opts.withNewClassfileManager(ClassfileManager.transactional(tempDir)), instead.", "0.13.5")
def setTransactional(opts: IncOptions, tempDir: File): IncOptions =
opts.copy(newClassfileManager = ClassfileManager.transactional(tempDir))
opts.withNewClassfileManager(ClassfileManager.transactional(tempDir, sbt.Logger.Null))
private val transitiveStepKey = "transitiveStep"
private val recompileAllFractionKey = "recompileAllFraction"

3
main/src/main/scala/sbt/Defaults.scala
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@ -215,7 +215,8 @@ object Defaults extends BuildCommon
)
def compileBase = inTask(console)(compilersSetting :: Nil) ++ compileBaseGlobal ++ Seq(
incOptions := IncOptions.setTransactional(incOptions.value, crossTarget.value / "classes.bak"),
incOptions := incOptions.value.withNewClassfileManager(
sbt.inc.ClassfileManager.transactional(crossTarget.value / "classes.bak", sbt.Logger.Null)),
scalaInstance <<= scalaInstanceTask,
crossVersion := (if(crossPaths.value) CrossVersion.binary else CrossVersion.Disabled),
crossTarget := makeCrossTarget(target.value, scalaBinaryVersion.value, sbtBinaryVersion.value, sbtPlugin.value, crossPaths.value)