src/Pure/System/build.scala
author wenzelm
Tue Aug 21 14:54:29 2012 +0200 (2012-08-21)
changeset 48872 6124e0d1120a
parent 48870 4accee106f0f
child 48883 04cd2fddb4d9
permissions -rw-r--r--
some support for thy_load_commands;
clarified signatures;
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/*  Title:      Pure/System/build.scala
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    Author:     Makarius
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Build and manage Isabelle sessions.
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*/
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package isabelle
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import java.util.{Timer, TimerTask}
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import java.io.{BufferedInputStream, FileInputStream,
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  BufferedReader, InputStreamReader, IOException}
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import java.util.zip.GZIPInputStream
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import scala.collection.SortedSet
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import scala.annotation.tailrec
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object Build
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{
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  /** session information **/
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  // external version
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  sealed case class Session_Entry(
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    pos: Position.T,
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    name: String,
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    groups: List[String],
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    path: String,
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    parent: Option[String],
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    description: String,
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    options: List[Options.Spec],
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    theories: List[(List[Options.Spec], List[String])],
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    files: List[String])
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  // internal version
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  sealed case class Session_Info(
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    select: Boolean,
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    pos: Position.T,
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    groups: List[String],
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    dir: Path,
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    parent: Option[String],
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    description: String,
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    options: Options,
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    theories: List[(Options, List[Path])],
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    files: List[Path],
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    entry_digest: SHA1.Digest)
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  def is_pure(name: String): Boolean = name == "RAW" || name == "Pure"
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  def session_info(options: Options, select: Boolean, dir: Path, entry: Session_Entry)
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      : (String, Session_Info) =
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    try {
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      val name = entry.name
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      if (name == "") error("Bad session name")
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      if (is_pure(name) && entry.parent.isDefined) error("Illegal parent session")
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      if (!is_pure(name) && !entry.parent.isDefined) error("Missing parent session")
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      val session_options = options ++ entry.options
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      val theories =
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        entry.theories.map({ case (opts, thys) =>
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          (session_options ++ opts, thys.map(Path.explode(_))) })
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      val files = entry.files.map(Path.explode(_))
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      val entry_digest = SHA1.digest((name, entry.parent, entry.options, entry.theories).toString)
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      val info =
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        Session_Info(select, entry.pos, entry.groups, dir + Path.explode(entry.path),
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          entry.parent, entry.description, session_options, theories, files, entry_digest)
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      (name, info)
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    }
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    catch {
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      case ERROR(msg) =>
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        error(msg + "\nThe error(s) above occurred in session entry " +
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          quote(entry.name) + Position.str_of(entry.pos))
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    }
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  /* session tree */
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  object Session_Tree
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  {
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    def apply(infos: Seq[(String, Session_Info)]): Session_Tree =
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    {
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      val graph1 =
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        (Graph.string[Session_Info] /: infos) {
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          case (graph, (name, info)) =>
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            if (graph.defined(name))
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              error("Duplicate session " + quote(name) + Position.str_of(info.pos))
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            else graph.new_node(name, info)
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        }
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      val graph2 =
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        (graph1 /: graph1.entries) {
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          case (graph, (name, (info, _))) =>
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            info.parent match {
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              case None => graph
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              case Some(parent) =>
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                if (!graph.defined(parent))
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                  error("Bad parent session " + quote(parent) + " for " +
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                    quote(name) + Position.str_of(info.pos))
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                try { graph.add_edge_acyclic(parent, name) }
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                catch {
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                  case exn: Graph.Cycles[_] =>
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                    error(cat_lines(exn.cycles.map(cycle =>
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                      "Cyclic session dependency of " +
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                        cycle.map(c => quote(c.toString)).mkString(" via "))) +
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                          Position.str_of(info.pos))
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                }
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            }
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        }
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      new Session_Tree(graph2)
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    }
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  }
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  final class Session_Tree private(val graph: Graph[String, Session_Info])
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    extends PartialFunction[String, Session_Info]
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  {
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    def apply(name: String): Session_Info = graph.get_node(name)
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    def isDefinedAt(name: String): Boolean = graph.defined(name)
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    def required(all_sessions: Boolean, session_groups: List[String], sessions: List[String])
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      : (List[String], Session_Tree) =
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    {
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      val bad_sessions = sessions.filterNot(isDefinedAt(_))
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      if (!bad_sessions.isEmpty) error("Undefined session(s): " + commas_quote(bad_sessions))
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      val selected =
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      {
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        if (all_sessions) graph.keys.toList
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        else {
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          val select_group = session_groups.toSet
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          val select = sessions.toSet
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          (for {
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            (name, (info, _)) <- graph.entries
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            if info.select || select(name) || apply(name).groups.exists(select_group)
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          } yield name).toList
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        }
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      }
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      val descendants = graph.all_succs(selected)
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      val tree1 = new Session_Tree(graph.restrict(graph.all_preds(selected).toSet))
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      (descendants, tree1)
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    }
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    def topological_order: List[(String, Session_Info)] =
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      graph.topological_order.map(name => (name, apply(name)))
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    override def toString: String = graph.entries.map(_._1).toList.sorted.mkString(",")
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  }
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  /* parser */
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  private val SESSION = "session"
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  private val IN = "in"
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  private val DESCRIPTION = "description"
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  private val OPTIONS = "options"
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  private val THEORIES = "theories"
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  private val FILES = "files"
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  lazy val root_syntax =
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    Outer_Syntax.init() + "(" + ")" + "+" + "," + "=" + "[" + "]" +
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      (SESSION, Keyword.THY_DECL) + IN + DESCRIPTION + OPTIONS + THEORIES + FILES
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  private object Parser extends Parse.Parser
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  {
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    def session_entry(pos: Position.T): Parser[Session_Entry] =
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    {
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      val session_name = atom("session name", _.is_name)
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      val option =
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        name ~ opt(keyword("=") ~! name ^^ { case _ ~ x => x }) ^^ { case x ~ y => (x, y) }
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      val options = keyword("[") ~> rep1sep(option, keyword(",")) <~ keyword("]")
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      val theories =
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        keyword(THEORIES) ~! ((options | success(Nil)) ~ rep(theory_name)) ^^
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          { case _ ~ (x ~ y) => (x, y) }
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      ((command(SESSION) ~! session_name) ^^ { case _ ~ x => x }) ~
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        (keyword("(") ~! (rep1(name) <~ keyword(")")) ^^ { case _ ~ x => x } | success(Nil)) ~
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        (keyword(IN) ~! path ^^ { case _ ~ x => x } | success(".")) ~
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        (keyword("=") ~> opt(session_name <~ keyword("+"))) ~
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        (keyword(DESCRIPTION) ~! text ^^ { case _ ~ x => x } | success("")) ~
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        (keyword(OPTIONS) ~! options ^^ { case _ ~ x => x } | success(Nil)) ~
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        rep(theories) ~
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        (keyword(FILES) ~! rep1(path) ^^ { case _ ~ x => x } | success(Nil)) ^^
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          { case a ~ b ~ c ~ d ~ e ~ f ~ g ~ h => Session_Entry(pos, a, b, c, d, e, f, g, h) }
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    }
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    def parse_entries(root: Path): List[Session_Entry] =
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    {
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      val toks = root_syntax.scan(File.read(root))
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      parse_all(rep(session_entry(root.position)), Token.reader(toks, root.implode)) match {
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        case Success(result, _) => result
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        case bad => error(bad.toString)
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      }
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    }
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  }
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  /* find sessions within certain directories */
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  private val ROOT = Path.explode("ROOT")
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  private val ROOTS = Path.explode("ROOTS")
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  private def is_session_dir(dir: Path): Boolean =
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    (dir + ROOT).is_file || (dir + ROOTS).is_file
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  private def check_session_dir(dir: Path): Path =
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    if (is_session_dir(dir)) dir
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    else error("Bad session root directory: " + dir.toString)
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  def find_sessions(options: Options, more_dirs: List[(Boolean, Path)]): Session_Tree =
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  {
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    def find_dir(select: Boolean, dir: Path): List[(String, Session_Info)] =
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      find_root(select, dir) ::: find_roots(select, dir)
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    def find_root(select: Boolean, dir: Path): List[(String, Session_Info)] =
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    {
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      val root = dir + ROOT
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      if (root.is_file) Parser.parse_entries(root).map(session_info(options, select, dir, _))
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      else Nil
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    }
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    def find_roots(select: Boolean, dir: Path): List[(String, Session_Info)] =
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    {
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      val roots = dir + ROOTS
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      if (roots.is_file) {
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        for {
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          line <- split_lines(File.read(roots))
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          if !(line == "" || line.startsWith("#"))
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          dir1 =
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            try { check_session_dir(dir + Path.explode(line)) }
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            catch {
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              case ERROR(msg) =>
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                error(msg + "\nThe error(s) above occurred in session catalog " + roots.toString)
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            }
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          info <- find_dir(select, dir1)
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        } yield info
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      }
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      else Nil
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    }
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    val default_dirs = Isabelle_System.components().filter(is_session_dir(_)).map((false, _))
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    more_dirs foreach { case (_, dir) => check_session_dir(dir) }
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    Session_Tree(
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      for {
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        (select, dir) <- default_dirs ::: more_dirs
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        info <- find_dir(select, dir)
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      } yield info)
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  }
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  /** build **/
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  private def echo(msg: String) { java.lang.System.out.println(msg) }
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  private def sleep(): Unit = Thread.sleep(500)
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  /* queue */
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  object Queue
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  {
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    def apply(tree: Session_Tree): Queue =
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    {
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      val graph = tree.graph
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      def outdegree(name: String): Int = graph.imm_succs(name).size
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      def timeout(name: String): Double = tree(name).options.real("timeout")
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      object Ordering extends scala.math.Ordering[String]
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      {
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        def compare(name1: String, name2: String): Int =
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          outdegree(name2) compare outdegree(name1) match {
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            case 0 =>
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              timeout(name2) compare timeout(name1) match {
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                case 0 => name1 compare name2
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                case ord => ord
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              }
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            case ord => ord
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          }
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      }
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      new Queue(graph, SortedSet(graph.keys.toList: _*)(Ordering))
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    }
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  }
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  final class Queue private(graph: Graph[String, Session_Info], order: SortedSet[String])
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  {
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    def is_inner(name: String): Boolean = !graph.is_maximal(name)
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    def is_empty: Boolean = graph.is_empty
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    def - (name: String): Queue = new Queue(graph.del_node(name), order - name)
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    def dequeue(skip: String => Boolean): Option[(String, Session_Info)] =
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    {
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      val it = order.iterator.dropWhile(name => skip(name) || !graph.is_minimal(name))
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      if (it.hasNext) { val name = it.next; Some((name, graph.get_node(name))) }
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      else None
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    }
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  }
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  /* source dependencies and static content */
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  sealed case class Session_Content(
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    loaded_theories: Set[String],
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    syntax: Outer_Syntax,
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    sources: List[(Path, SHA1.Digest)],
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    errors: List[String])
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  {
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    def check_errors: Session_Content =
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    {
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      if (errors.isEmpty) this
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      else error(cat_lines(errors))
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    }
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  }
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  sealed case class Deps(deps: Map[String, Session_Content])
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  {
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    def is_empty: Boolean = deps.isEmpty
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    def apply(name: String): Session_Content = deps(name)
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    def sources(name: String): List[SHA1.Digest] = deps(name).sources.map(_._2)
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  }
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  def dependencies(verbose: Boolean, tree: Session_Tree): Deps =
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    Deps((Map.empty[String, Session_Content] /: tree.topological_order)(
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      { case (deps, (name, info)) =>
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          val (preloaded, parent_syntax, parent_errors) =
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            info.parent match {
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              case None =>
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                (Set.empty[String], Outer_Syntax.init_pure(), Nil)
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              case Some(parent_name) =>
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                val parent = deps(parent_name)
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                (parent.loaded_theories, parent.syntax, parent.errors)
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            }
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          val thy_info = new Thy_Info(new Thy_Load(preloaded, parent_syntax))
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          if (verbose) {
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            val groups =
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              if (info.groups.isEmpty) ""
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              else info.groups.mkString(" (", " ", ")")
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            echo("Session " + name + groups)
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          }
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          val thy_deps =
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            thy_info.dependencies(
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              info.theories.map(_._2).flatten.
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                map(thy => Document.Node.Name(info.dir + Thy_Load.thy_path(thy))))
wenzelm@48422
   355
wenzelm@48872
   356
          val loaded_theories = thy_deps.loaded_theories
wenzelm@48872
   357
          val syntax = thy_deps.syntax
wenzelm@48660
   358
wenzelm@48423
   359
          val all_files =
wenzelm@48872
   360
            thy_deps.deps.map({ case (n, h) =>
wenzelm@48422
   361
              val thy = Path.explode(n.node).expand
wenzelm@48707
   362
              val uses = h.uses.map(p => (Path.explode(n.dir) + Path.explode(p._1)).expand)
wenzelm@48422
   363
              thy :: uses
wenzelm@48422
   364
            }).flatten ::: info.files.map(file => info.dir + file)
wenzelm@48485
   365
          val sources =
wenzelm@48485
   366
            try { all_files.map(p => (p, SHA1.digest(p))) }
wenzelm@48485
   367
            catch {
wenzelm@48485
   368
              case ERROR(msg) =>
wenzelm@48675
   369
                error(msg + "\nThe error(s) above occurred in session " +
wenzelm@48675
   370
                  quote(name) + Position.str_of(info.pos))
wenzelm@48485
   371
            }
wenzelm@48872
   372
          val errors = parent_errors ::: thy_deps.deps.map(d => d._2.errors).flatten
wenzelm@48422
   373
wenzelm@48794
   374
          deps + (name -> Session_Content(loaded_theories, syntax, sources, errors))
wenzelm@48423
   375
      }))
wenzelm@48422
   376
wenzelm@48791
   377
  def session_content(dirs: List[Path], session: String): Session_Content =
wenzelm@48710
   378
  {
wenzelm@48791
   379
    val (_, tree) =
wenzelm@48791
   380
      find_sessions(Options.init(), dirs.map((false, _))).required(false, Nil, List(session))
wenzelm@48710
   381
    dependencies(false, tree)(session)
wenzelm@48710
   382
  }
wenzelm@48710
   383
wenzelm@48794
   384
  def outer_syntax(session: String): Outer_Syntax =
wenzelm@48794
   385
    session_content(Nil, session).check_errors.syntax
wenzelm@48710
   386
wenzelm@48422
   387
wenzelm@48424
   388
  /* jobs */
wenzelm@48341
   389
wenzelm@48675
   390
  private class Job(name: String, info: Session_Info, output: Path, do_output: Boolean,
wenzelm@48674
   391
    verbose: Boolean, browser_info: Path)
wenzelm@48418
   392
  {
wenzelm@48467
   393
    // global browser info dir
wenzelm@48674
   394
    if (info.options.bool("browser_info") && !(browser_info + Path.explode("index.html")).is_file)
wenzelm@48467
   395
    {
wenzelm@48467
   396
      browser_info.file.mkdirs()
wenzelm@48467
   397
      File.copy(Path.explode("~~/lib/logo/isabelle.gif"),
wenzelm@48467
   398
        browser_info + Path.explode("isabelle.gif"))
wenzelm@48467
   399
      File.write(browser_info + Path.explode("index.html"),
wenzelm@48467
   400
        File.read(Path.explode("~~/lib/html/library_index_header.template")) +
wenzelm@48724
   401
        File.read(Path.explode("~~/lib/html/library_index_content.template")) +
wenzelm@48467
   402
        File.read(Path.explode("~~/lib/html/library_index_footer.template")))
wenzelm@48467
   403
    }
wenzelm@48467
   404
wenzelm@48674
   405
    def output_path: Option[Path] = if (do_output) Some(output) else None
wenzelm@48674
   406
wenzelm@48674
   407
    private val parent = info.parent.getOrElse("")
wenzelm@48418
   408
wenzelm@48698
   409
    private val args_file = File.tmp_file("args")
wenzelm@48698
   410
    File.write(args_file, YXML.string_of_body(
wenzelm@48698
   411
      if (is_pure(name)) Options.encode(info.options)
wenzelm@48698
   412
      else
wenzelm@48698
   413
        {
wenzelm@48698
   414
          import XML.Encode._
wenzelm@48698
   415
              pair(bool, pair(Options.encode, pair(bool, pair(Path.encode, pair(string,
wenzelm@48698
   416
                pair(string, list(pair(Options.encode, list(Path.encode)))))))))(
wenzelm@48698
   417
              (do_output, (info.options, (verbose, (browser_info, (parent,
wenzelm@48698
   418
                (name, info.theories)))))))
wenzelm@48698
   419
        }))
wenzelm@48698
   420
wenzelm@48674
   421
    private val env =
wenzelm@48698
   422
      Map("INPUT" -> parent, "TARGET" -> name, "OUTPUT" -> Isabelle_System.standard_path(output),
wenzelm@48698
   423
        (if (is_pure(name)) "ISABELLE_PROCESS_OPTIONS" else "ARGS_FILE") ->
wenzelm@48698
   424
          Isabelle_System.posix_path(args_file.getPath))
wenzelm@48698
   425
wenzelm@48674
   426
    private val script =
wenzelm@48511
   427
      if (is_pure(name)) {
wenzelm@48511
   428
        if (do_output) "./build " + name + " \"$OUTPUT\""
wenzelm@48511
   429
        else """ rm -f "$OUTPUT"; ./build """ + name
wenzelm@48511
   430
      }
wenzelm@48418
   431
      else {
wenzelm@48418
   432
        """
wenzelm@48418
   433
        . "$ISABELLE_HOME/lib/scripts/timestart.bash"
wenzelm@48418
   434
        """ +
wenzelm@48511
   435
          (if (do_output)
wenzelm@48511
   436
            """
wenzelm@48511
   437
            "$ISABELLE_PROCESS" -e "Build.build \"$ARGS_FILE\";" -q -w "$INPUT" "$OUTPUT"
wenzelm@48511
   438
            """
wenzelm@48418
   439
          else
wenzelm@48511
   440
            """
wenzelm@48511
   441
            rm -f "$OUTPUT"; "$ISABELLE_PROCESS" -e "Build.build \"$ARGS_FILE\";" -r -q "$INPUT"
wenzelm@48511
   442
            """) +
wenzelm@48418
   443
        """
wenzelm@48418
   444
        RC="$?"
wenzelm@48418
   445
wenzelm@48418
   446
        . "$ISABELLE_HOME/lib/scripts/timestop.bash"
wenzelm@48418
   447
wenzelm@48418
   448
        if [ "$RC" -eq 0 ]; then
wenzelm@48418
   449
          echo "Finished $TARGET ($TIMES_REPORT)" >&2
wenzelm@48418
   450
        fi
wenzelm@48418
   451
wenzelm@48418
   452
        exit "$RC"
wenzelm@48418
   453
        """
wenzelm@48418
   454
      }
wenzelm@48674
   455
wenzelm@48674
   456
    private val (thread, result) =
wenzelm@48698
   457
      Simple_Thread.future("build") { Isabelle_System.bash_env(info.dir.file, env, script) }
wenzelm@48674
   458
wenzelm@48674
   459
    def terminate: Unit = thread.interrupt
wenzelm@48674
   460
    def is_finished: Boolean = result.is_finished
wenzelm@48674
   461
wenzelm@48674
   462
    @volatile private var timeout = false
wenzelm@48674
   463
    private val time = Time.seconds(info.options.real("timeout"))
wenzelm@48674
   464
    private val timer: Option[Timer] =
wenzelm@48674
   465
      if (time.seconds > 0.0) {
wenzelm@48674
   466
        val t = new Timer("build", true)
wenzelm@48674
   467
        t.schedule(new TimerTask { def run = { terminate; timeout = true } }, time.ms)
wenzelm@48674
   468
        Some(t)
wenzelm@48674
   469
      }
wenzelm@48674
   470
      else None
wenzelm@48674
   471
wenzelm@48674
   472
    def join: (String, String, Int) = {
wenzelm@48674
   473
      val (out, err, rc) = result.join
wenzelm@48674
   474
      args_file.delete
wenzelm@48674
   475
      timer.map(_.cancel())
wenzelm@48674
   476
wenzelm@48674
   477
      val err1 =
wenzelm@48674
   478
        if (rc == 130)
wenzelm@48674
   479
          (if (err.isEmpty || err.endsWith("\n")) err else err + "\n") +
wenzelm@48674
   480
          (if (timeout) "*** Timeout\n" else "*** Interrupt\n")
wenzelm@48674
   481
        else err
wenzelm@48674
   482
      (out, err1, rc)
wenzelm@48674
   483
    }
wenzelm@48364
   484
  }
wenzelm@48364
   485
wenzelm@48424
   486
wenzelm@48504
   487
  /* log files and corresponding heaps */
wenzelm@48504
   488
wenzelm@48505
   489
  private val LOG = Path.explode("log")
wenzelm@48505
   490
  private def log(name: String): Path = LOG + Path.basic(name)
wenzelm@48505
   491
  private def log_gz(name: String): Path = log(name).ext("gz")
wenzelm@48504
   492
wenzelm@48505
   493
  private def sources_stamp(digests: List[SHA1.Digest]): String =
wenzelm@48504
   494
    digests.map(_.toString).sorted.mkString("sources: ", " ", "")
wenzelm@48504
   495
wenzelm@48639
   496
  private val no_heap: String = "heap: -"
wenzelm@48639
   497
wenzelm@48639
   498
  private def heap_stamp(heap: Option[Path]): String =
wenzelm@48504
   499
  {
wenzelm@48504
   500
    "heap: " +
wenzelm@48639
   501
      (heap match {
wenzelm@48504
   502
        case Some(path) =>
wenzelm@48504
   503
          val file = path.file
wenzelm@48504
   504
          if (file.isFile) file.length.toString + " " + file.lastModified.toString
wenzelm@48504
   505
          else "-"
wenzelm@48504
   506
        case None => "-"
wenzelm@48504
   507
      })
wenzelm@48504
   508
  }
wenzelm@48504
   509
wenzelm@48639
   510
  private def read_stamps(path: Path): Option[(String, String, String)] =
wenzelm@48639
   511
    if (path.is_file) {
wenzelm@48639
   512
      val stream = new GZIPInputStream (new BufferedInputStream(new FileInputStream(path.file)))
wenzelm@48504
   513
      val reader = new BufferedReader(new InputStreamReader(stream, Standard_System.charset))
wenzelm@48639
   514
      val (s, h1, h2) =
wenzelm@48639
   515
        try { (reader.readLine, reader.readLine, reader.readLine) }
wenzelm@48639
   516
        finally { reader.close }
wenzelm@48639
   517
      if (s != null && s.startsWith("sources: ") &&
wenzelm@48639
   518
          h1 != null && h1.startsWith("heap: ") &&
wenzelm@48639
   519
          h2 != null && h2.startsWith("heap: ")) Some((s, h1, h2))
wenzelm@48504
   520
      else None
wenzelm@48504
   521
    }
wenzelm@48504
   522
    else None
wenzelm@48504
   523
wenzelm@48504
   524
wenzelm@48425
   525
  /* build */
wenzelm@48424
   526
wenzelm@48509
   527
  def build(
wenzelm@48509
   528
    all_sessions: Boolean = false,
wenzelm@48511
   529
    build_heap: Boolean = false,
wenzelm@48595
   530
    clean_build: Boolean = false,
wenzelm@48737
   531
    more_dirs: List[(Boolean, Path)] = Nil,
wenzelm@48509
   532
    session_groups: List[String] = Nil,
wenzelm@48509
   533
    max_jobs: Int = 1,
wenzelm@48509
   534
    no_build: Boolean = false,
wenzelm@48509
   535
    build_options: List[String] = Nil,
wenzelm@48509
   536
    system_mode: Boolean = false,
wenzelm@48509
   537
    verbose: Boolean = false,
wenzelm@48509
   538
    sessions: List[String] = Nil): Int =
wenzelm@48341
   539
  {
wenzelm@48807
   540
    val options = (Options.init() /: build_options)(_ + _)
wenzelm@48676
   541
    val (descendants, tree) =
wenzelm@48676
   542
      find_sessions(options, more_dirs).required(all_sessions, session_groups, sessions)
wenzelm@48676
   543
    val deps = dependencies(verbose, tree)
wenzelm@48676
   544
    val queue = Queue(tree)
wenzelm@48368
   545
wenzelm@48504
   546
    def make_stamp(name: String): String =
wenzelm@48676
   547
      sources_stamp(tree(name).entry_digest :: deps.sources(name))
wenzelm@48504
   548
wenzelm@48504
   549
    val (input_dirs, output_dir, browser_info) =
wenzelm@48504
   550
      if (system_mode) {
wenzelm@48504
   551
        val output_dir = Path.explode("~~/heaps/$ML_IDENTIFIER")
wenzelm@48504
   552
        (List(output_dir), output_dir, Path.explode("~~/browser_info"))
wenzelm@48504
   553
      }
wenzelm@48504
   554
      else {
wenzelm@48504
   555
        val output_dir = Path.explode("$ISABELLE_OUTPUT")
wenzelm@48504
   556
        (output_dir :: Isabelle_System.find_logics_dirs(), output_dir,
wenzelm@48504
   557
         Path.explode("$ISABELLE_BROWSER_INFO"))
wenzelm@48504
   558
      }
wenzelm@48363
   559
wenzelm@48373
   560
    // prepare log dir
wenzelm@48504
   561
    (output_dir + LOG).file.mkdirs()
wenzelm@48373
   562
wenzelm@48595
   563
    // optional cleanup
wenzelm@48595
   564
    if (clean_build) {
wenzelm@48595
   565
      for (name <- descendants) {
wenzelm@48595
   566
        val files =
wenzelm@48595
   567
          List(Path.basic(name), log(name), log_gz(name)).map(output_dir + _).filter(_.is_file)
wenzelm@48595
   568
        if (!files.isEmpty) echo("Cleaning " + name + " ...")
wenzelm@48595
   569
        if (!files.forall(p => p.file.delete)) echo(name + " FAILED to delete")
wenzelm@48595
   570
      }
wenzelm@48595
   571
    }
wenzelm@48595
   572
wenzelm@48425
   573
    // scheduler loop
wenzelm@48639
   574
    case class Result(current: Boolean, heap: String, rc: Int)
wenzelm@48639
   575
wenzelm@48425
   576
    @tailrec def loop(
wenzelm@48676
   577
      pending: Queue,
wenzelm@48674
   578
      running: Map[String, (String, Job)],
wenzelm@48639
   579
      results: Map[String, Result]): Map[String, Result] =
wenzelm@48425
   580
    {
wenzelm@48425
   581
      if (pending.is_empty) results
wenzelm@48547
   582
      else
wenzelm@48674
   583
        running.find({ case (_, (_, job)) => job.is_finished }) match {
wenzelm@48674
   584
          case Some((name, (parent_heap, job))) =>
wenzelm@48547
   585
            // finish job
wenzelm@48424
   586
wenzelm@48547
   587
            val (out, err, rc) = job.join
wenzelm@48547
   588
            echo(Library.trim_line(err))
wenzelm@48373
   589
wenzelm@48639
   590
            val heap =
wenzelm@48639
   591
              if (rc == 0) {
wenzelm@48639
   592
                (output_dir + log(name)).file.delete
wenzelm@48639
   593
wenzelm@48639
   594
                val sources = make_stamp(name)
wenzelm@48639
   595
                val heap = heap_stamp(job.output_path)
wenzelm@48639
   596
                File.write_gzip(output_dir + log_gz(name),
wenzelm@48674
   597
                  sources + "\n" + parent_heap + "\n" + heap + "\n" + out)
wenzelm@48639
   598
wenzelm@48639
   599
                heap
wenzelm@48639
   600
              }
wenzelm@48639
   601
              else {
wenzelm@48639
   602
                (output_dir + Path.basic(name)).file.delete
wenzelm@48639
   603
                (output_dir + log_gz(name)).file.delete
wenzelm@48639
   604
wenzelm@48639
   605
                File.write(output_dir + log(name), out)
wenzelm@48639
   606
                echo(name + " FAILED")
wenzelm@48661
   607
                if (rc != 130) {
wenzelm@48661
   608
                  echo("(see also " + (output_dir + log(name)).file.toString + ")")
wenzelm@48661
   609
                  val lines = split_lines(out)
wenzelm@48661
   610
                  val tail = lines.drop(lines.length - 20 max 0)
wenzelm@48661
   611
                  echo("\n" + cat_lines(tail))
wenzelm@48661
   612
                }
wenzelm@48639
   613
wenzelm@48639
   614
                no_heap
wenzelm@48639
   615
              }
wenzelm@48639
   616
            loop(pending - name, running - name, results + (name -> Result(false, heap, rc)))
wenzelm@48528
   617
wenzelm@48547
   618
          case None if (running.size < (max_jobs max 1)) =>
wenzelm@48547
   619
            // check/start next job
wenzelm@48547
   620
            pending.dequeue(running.isDefinedAt(_)) match {
wenzelm@48547
   621
              case Some((name, info)) =>
wenzelm@48639
   622
                val parent_result =
wenzelm@48639
   623
                  info.parent match {
wenzelm@48639
   624
                    case None => Result(true, no_heap, 0)
wenzelm@48639
   625
                    case Some(parent) => results(parent)
wenzelm@48639
   626
                  }
wenzelm@48547
   627
                val output = output_dir + Path.basic(name)
wenzelm@48547
   628
                val do_output = build_heap || queue.is_inner(name)
wenzelm@48547
   629
wenzelm@48639
   630
                val (current, heap) =
wenzelm@48547
   631
                {
wenzelm@48548
   632
                  input_dirs.find(dir => (dir + log_gz(name)).is_file) match {
wenzelm@48547
   633
                    case Some(dir) =>
wenzelm@48639
   634
                      read_stamps(dir + log_gz(name)) match {
wenzelm@48639
   635
                        case Some((s, h1, h2)) =>
wenzelm@48639
   636
                          val heap = heap_stamp(Some(dir + Path.basic(name)))
wenzelm@48639
   637
                          (s == make_stamp(name) && h1 == parent_result.heap && h2 == heap &&
wenzelm@48639
   638
                            !(do_output && heap == no_heap), heap)
wenzelm@48639
   639
                        case None => (false, no_heap)
wenzelm@48547
   640
                      }
wenzelm@48639
   641
                    case None => (false, no_heap)
wenzelm@48504
   642
                  }
wenzelm@48547
   643
                }
wenzelm@48639
   644
                val all_current = current && parent_result.current
wenzelm@48528
   645
wenzelm@48547
   646
                if (all_current)
wenzelm@48639
   647
                  loop(pending - name, running, results + (name -> Result(true, heap, 0)))
wenzelm@48678
   648
                else if (no_build) {
wenzelm@48678
   649
                  if (verbose) echo("Skipping " + name + " ...")
wenzelm@48639
   650
                  loop(pending - name, running, results + (name -> Result(false, heap, 1)))
wenzelm@48678
   651
                }
wenzelm@48639
   652
                else if (parent_result.rc == 0) {
wenzelm@48547
   653
                  echo((if (do_output) "Building " else "Running ") + name + " ...")
wenzelm@48674
   654
                  val job = new Job(name, info, output, do_output, verbose, browser_info)
wenzelm@48674
   655
                  loop(pending, running + (name -> (parent_result.heap, job)), results)
wenzelm@48547
   656
                }
wenzelm@48547
   657
                else {
wenzelm@48547
   658
                  echo(name + " CANCELLED")
wenzelm@48639
   659
                  loop(pending - name, running, results + (name -> Result(false, heap, 1)))
wenzelm@48547
   660
                }
wenzelm@48547
   661
              case None => sleep(); loop(pending, running, results)
wenzelm@48425
   662
            }
wenzelm@48425
   663
          case None => sleep(); loop(pending, running, results)
wenzelm@48373
   664
        }
wenzelm@48425
   665
    }
wenzelm@48425
   666
wenzelm@48583
   667
    val results =
wenzelm@48583
   668
      if (deps.is_empty) {
wenzelm@48583
   669
        echo("### Nothing to build")
wenzelm@48583
   670
        Map.empty
wenzelm@48583
   671
      }
wenzelm@48583
   672
      else loop(queue, Map.empty, Map.empty)
wenzelm@48583
   673
wenzelm@48639
   674
    val rc = (0 /: results)({ case (rc1, (_, res)) => rc1 max res.rc })
wenzelm@48504
   675
    if (rc != 0 && (verbose || !no_build)) {
wenzelm@48552
   676
      val unfinished =
wenzelm@48639
   677
        (for ((name, res) <- results.iterator if res.rc != 0) yield name).toList.sorted
wenzelm@48473
   678
      echo("Unfinished session(s): " + commas(unfinished))
wenzelm@48473
   679
    }
wenzelm@48473
   680
    rc
wenzelm@48341
   681
  }
wenzelm@48341
   682
wenzelm@48341
   683
wenzelm@48346
   684
  /* command line entry point */
wenzelm@48341
   685
wenzelm@48341
   686
  def main(args: Array[String])
wenzelm@48341
   687
  {
wenzelm@48346
   688
    Command_Line.tool {
wenzelm@48346
   689
      args.toList match {
wenzelm@48346
   690
        case
wenzelm@48346
   691
          Properties.Value.Boolean(all_sessions) ::
wenzelm@48511
   692
          Properties.Value.Boolean(build_heap) ::
wenzelm@48595
   693
          Properties.Value.Boolean(clean_build) ::
wenzelm@48425
   694
          Properties.Value.Int(max_jobs) ::
wenzelm@48469
   695
          Properties.Value.Boolean(no_build) ::
wenzelm@48447
   696
          Properties.Value.Boolean(system_mode) ::
wenzelm@48425
   697
          Properties.Value.Boolean(verbose) ::
wenzelm@48737
   698
          Command_Line.Chunks(select_dirs, include_dirs, session_groups, build_options, sessions) =>
wenzelm@48737
   699
            val dirs =
wenzelm@48737
   700
              select_dirs.map(d => (true, Path.explode(d))) :::
wenzelm@48737
   701
              include_dirs.map(d => (false, Path.explode(d)))
wenzelm@48737
   702
            build(all_sessions, build_heap, clean_build, dirs, session_groups,
wenzelm@48737
   703
              max_jobs, no_build, build_options, system_mode, verbose, sessions)
wenzelm@48346
   704
        case _ => error("Bad arguments:\n" + cat_lines(args))
wenzelm@48341
   705
      }
wenzelm@48346
   706
    }
wenzelm@48341
   707
  }
wenzelm@48276
   708
}
wenzelm@48276
   709