src/Pure/System/build.scala
author wenzelm
Sat Aug 04 21:45:41 2012 +0200 (2012-08-04)
changeset 48676 3ef82491cdd6
parent 48675 10f5303f86e5
child 48678 ff27af15530c
permissions -rw-r--r--
clarified Session_Tree (with proper integrity check) vs. Queue (with provision for alternative ordering);
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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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    base_name: String,
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    this_name: Boolean,
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    groups: List[String],
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    path: Option[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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    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, dir: Path, entry: Session_Entry): (String, Session_Info) =
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    try {
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      if (entry.base_name == "") error("Bad session name")
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      val full_name =
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        if (is_pure(entry.base_name)) {
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          if (entry.parent.isDefined) error("Illegal parent session")
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          else entry.base_name
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        }
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        else
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          entry.parent match {
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            case None => error("Missing parent session")
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            case Some(parent_name) =>
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              if (entry.this_name) entry.base_name
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              else parent_name + "-" + entry.base_name
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          }
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      val path =
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        entry.path match {
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          case Some(p) => Path.explode(p)
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          case None => Path.basic(entry.base_name)
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        }
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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 =
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        SHA1.digest((full_name, entry.parent, entry.options, entry.theories).toString)
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      val info =
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        Session_Info(entry.pos, entry.groups, dir + path, entry.parent, entry.description,
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          session_options, theories, files, entry_digest)
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      (full_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.base_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 graph =
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        (Graph.string[Option[Session_Info]] /: infos) {
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          case (graph, (name, info)) =>
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            val parents = info.parent.toList
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            val graph1 = (graph /: (name :: parents))(_.default_node(_, None))
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            if (graph1.get_node(name).isDefined)
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              error("Duplicate session: " + quote(name) + Position.str_of(info.pos))
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            try { graph1.map_node(name, _ => Some(info)).add_deps_acyclic(name, parents) }
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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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            }
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        }
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      val tree = new Session_Tree(graph)
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      val bad_parents =
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        (for {
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          (name, (Some(info), _)) <- graph.entries
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          if info.parent.isDefined; parent = info.parent.get
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          if !tree.isDefinedAt(parent)
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        } yield parent + " (for " + name + ")").toList
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      if (!bad_parents.isEmpty) error("Bad parent session(s): " + commas(bad_parents))
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      tree
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    }
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  }
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  final class Session_Tree private(val graph: Graph[String, Option[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).get
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    def isDefinedAt(name: String): Boolean =
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      graph.defined(name) && graph.get_node(name).isDefined
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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 sel_group = session_groups.toSet
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          val sel = sessions.toSet
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            graph.keys.toList.filter(name =>
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              sel(name) || apply(name).groups.exists(sel_group)).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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  }
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  /* parser */
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  private object Parser extends Parse.Parser
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  {
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    val SESSION = "session"
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    val IN = "in"
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    val DESCRIPTION = "description"
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    val OPTIONS = "options"
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    val THEORIES = "theories"
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    val FILES = "files"
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    val syntax =
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      Outer_Syntax.empty + "!" + "(" + ")" + "+" + "," + "=" + "[" + "]" +
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        SESSION + IN + DESCRIPTION + OPTIONS + THEORIES + FILES
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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("[") ~> repsep(option, keyword(",")) <~ keyword("]")
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      val theories =
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        keyword(THEORIES) ~! ((options | success(Nil)) ~ rep1(theory_name)) ^^
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          { case _ ~ (x ~ y) => (x, y) }
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      ((keyword(SESSION) ~! session_name) ^^ { case _ ~ x => x }) ~
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        (keyword("!") ^^^ true | success(false)) ~
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        (keyword("(") ~! (rep1(name) <~ keyword(")")) ^^ { case _ ~ x => x } | success(Nil)) ~
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        (opt(keyword(IN) ~! path ^^ { case _ ~ x => x })) ~
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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 ~ i => Session_Entry(pos, a, b, c, d, e, f, g, h, i) }
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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 = 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 def is_session_dir(dir: Path): Boolean = (dir + ROOT).is_file
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  private def sessions_root(options: Options, 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(dir + ROOT).map(session_info(options, dir, _))
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    else error("Bad session root file: " + root.toString)
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  }
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  def find_sessions(options: Options, more_dirs: List[Path]): Session_Tree =
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  {
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    val dirs = Isabelle_System.components().filter(is_session_dir(_)) ::: more_dirs
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    Session_Tree(dirs.map(sessions_root(options, _)).flatten)
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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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      new Queue(graph, SortedSet(graph.keys.toList: _*)(graph.ordering))
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    }
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  }
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  final class Queue private(graph: Graph[String, Option[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).get)) }
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      else None
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    }
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  }
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  /* source dependencies */
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  sealed case class Node(
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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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  sealed case class Deps(deps: Map[String, Node])
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  {
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    def is_empty: Boolean = deps.isEmpty
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    def apply(name: String): Node = 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, Node] /: tree.topological_order)(
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      { case (deps, (name, info)) =>
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          val (preloaded, parent_syntax) =
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            info.parent match {
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              case Some(parent) => (deps(parent).loaded_theories, deps(parent).syntax)
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              case None =>
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                (Set.empty[String],
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                  Outer_Syntax.init() +
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                    // FIXME avoid hardwired stuff!?
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                    ("theory", Keyword.THY_BEGIN) +
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                    ("hence", Keyword.PRF_ASM_GOAL, "then have") +
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                    ("thus", Keyword.PRF_ASM_GOAL, "then show"))
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            }
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          val thy_info = new Thy_Info(new Thy_Load(preloaded))
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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))))
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          val loaded_theories = preloaded ++ thy_deps.map(_._1.theory)
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          val keywords = thy_deps.map({ case (_, Exn.Res(h)) => h.keywords case _ => Nil }).flatten
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          val syntax = (parent_syntax /: keywords)(_ + _)
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          val all_files =
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            thy_deps.map({ case (n, h) =>
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              val thy = Path.explode(n.node).expand
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              val uses =
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                h match {
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                  case Exn.Res(d) =>
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                    d.uses.map(p => (Path.explode(n.dir) + Path.explode(p._1)).expand)
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                  case _ => Nil
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                }
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              thy :: uses
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            }).flatten ::: info.files.map(file => info.dir + file)
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          val sources =
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            try { all_files.map(p => (p, SHA1.digest(p))) }
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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 " +
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                  quote(name) + Position.str_of(info.pos))
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            }
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          deps + (name -> Node(loaded_theories, syntax, sources))
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      }))
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  /* jobs */
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  private class Job(name: String, info: Session_Info, output: Path, do_output: Boolean,
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    verbose: Boolean, browser_info: Path)
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  {
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    // global browser info dir
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    if (info.options.bool("browser_info") && !(browser_info + Path.explode("index.html")).is_file)
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    {
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      browser_info.file.mkdirs()
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      File.copy(Path.explode("~~/lib/logo/isabelle.gif"),
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        browser_info + Path.explode("isabelle.gif"))
wenzelm@48467
   351
      File.write(browser_info + Path.explode("index.html"),
wenzelm@48467
   352
        File.read(Path.explode("~~/lib/html/library_index_header.template")) +
wenzelm@48467
   353
        File.read(Path.explode("~~/lib/html/library_index_content.template")) +
wenzelm@48467
   354
        File.read(Path.explode("~~/lib/html/library_index_footer.template")))
wenzelm@48467
   355
    }
wenzelm@48467
   356
wenzelm@48674
   357
    def output_path: Option[Path] = if (do_output) Some(output) else None
wenzelm@48674
   358
wenzelm@48674
   359
    private val parent = info.parent.getOrElse("")
wenzelm@48418
   360
wenzelm@48674
   361
    private val env =
wenzelm@48511
   362
      Map("INPUT" -> parent, "TARGET" -> name, "OUTPUT" -> Isabelle_System.standard_path(output))
wenzelm@48674
   363
    private val script =
wenzelm@48511
   364
      if (is_pure(name)) {
wenzelm@48511
   365
        if (do_output) "./build " + name + " \"$OUTPUT\""
wenzelm@48511
   366
        else """ rm -f "$OUTPUT"; ./build """ + name
wenzelm@48511
   367
      }
wenzelm@48418
   368
      else {
wenzelm@48418
   369
        """
wenzelm@48418
   370
        . "$ISABELLE_HOME/lib/scripts/timestart.bash"
wenzelm@48418
   371
        """ +
wenzelm@48511
   372
          (if (do_output)
wenzelm@48511
   373
            """
wenzelm@48511
   374
            "$ISABELLE_PROCESS" -e "Build.build \"$ARGS_FILE\";" -q -w "$INPUT" "$OUTPUT"
wenzelm@48511
   375
            """
wenzelm@48418
   376
          else
wenzelm@48511
   377
            """
wenzelm@48511
   378
            rm -f "$OUTPUT"; "$ISABELLE_PROCESS" -e "Build.build \"$ARGS_FILE\";" -r -q "$INPUT"
wenzelm@48511
   379
            """) +
wenzelm@48418
   380
        """
wenzelm@48418
   381
        RC="$?"
wenzelm@48418
   382
wenzelm@48418
   383
        . "$ISABELLE_HOME/lib/scripts/timestop.bash"
wenzelm@48418
   384
wenzelm@48418
   385
        if [ "$RC" -eq 0 ]; then
wenzelm@48418
   386
          echo "Finished $TARGET ($TIMES_REPORT)" >&2
wenzelm@48418
   387
        fi
wenzelm@48418
   388
wenzelm@48418
   389
        exit "$RC"
wenzelm@48418
   390
        """
wenzelm@48418
   391
      }
wenzelm@48674
   392
    private val args_xml =
wenzelm@48418
   393
    {
wenzelm@48418
   394
      import XML.Encode._
wenzelm@48545
   395
          pair(bool, pair(Options.encode, pair(bool, pair(Path.encode, pair(string,
wenzelm@48545
   396
            pair(string, list(pair(Options.encode, list(Path.encode)))))))))(
wenzelm@48674
   397
          (do_output, (info.options, (verbose, (browser_info, (parent,
wenzelm@48545
   398
            (name, info.theories)))))))
wenzelm@48418
   399
    }
wenzelm@48674
   400
    private val args_file = File.tmp_file("args")
wenzelm@48674
   401
    private val env1 = env + ("ARGS_FILE" -> Isabelle_System.posix_path(args_file.getPath))
wenzelm@48674
   402
    File.write(args_file, YXML.string_of_body(args_xml))
wenzelm@48674
   403
wenzelm@48674
   404
    private val (thread, result) =
wenzelm@48674
   405
      Simple_Thread.future("build") { Isabelle_System.bash_env(info.dir.file, env1, script) }
wenzelm@48674
   406
wenzelm@48674
   407
    def terminate: Unit = thread.interrupt
wenzelm@48674
   408
    def is_finished: Boolean = result.is_finished
wenzelm@48674
   409
wenzelm@48674
   410
    @volatile private var timeout = false
wenzelm@48674
   411
    private val time = Time.seconds(info.options.real("timeout"))
wenzelm@48674
   412
    private val timer: Option[Timer] =
wenzelm@48674
   413
      if (time.seconds > 0.0) {
wenzelm@48674
   414
        val t = new Timer("build", true)
wenzelm@48674
   415
        t.schedule(new TimerTask { def run = { terminate; timeout = true } }, time.ms)
wenzelm@48674
   416
        Some(t)
wenzelm@48674
   417
      }
wenzelm@48674
   418
      else None
wenzelm@48674
   419
wenzelm@48674
   420
    def join: (String, String, Int) = {
wenzelm@48674
   421
      val (out, err, rc) = result.join
wenzelm@48674
   422
      args_file.delete
wenzelm@48674
   423
      timer.map(_.cancel())
wenzelm@48674
   424
wenzelm@48674
   425
      val err1 =
wenzelm@48674
   426
        if (rc == 130)
wenzelm@48674
   427
          (if (err.isEmpty || err.endsWith("\n")) err else err + "\n") +
wenzelm@48674
   428
          (if (timeout) "*** Timeout\n" else "*** Interrupt\n")
wenzelm@48674
   429
        else err
wenzelm@48674
   430
      (out, err1, rc)
wenzelm@48674
   431
    }
wenzelm@48364
   432
  }
wenzelm@48364
   433
wenzelm@48424
   434
wenzelm@48504
   435
  /* log files and corresponding heaps */
wenzelm@48504
   436
wenzelm@48505
   437
  private val LOG = Path.explode("log")
wenzelm@48505
   438
  private def log(name: String): Path = LOG + Path.basic(name)
wenzelm@48505
   439
  private def log_gz(name: String): Path = log(name).ext("gz")
wenzelm@48504
   440
wenzelm@48505
   441
  private def sources_stamp(digests: List[SHA1.Digest]): String =
wenzelm@48504
   442
    digests.map(_.toString).sorted.mkString("sources: ", " ", "")
wenzelm@48504
   443
wenzelm@48639
   444
  private val no_heap: String = "heap: -"
wenzelm@48639
   445
wenzelm@48639
   446
  private def heap_stamp(heap: Option[Path]): String =
wenzelm@48504
   447
  {
wenzelm@48504
   448
    "heap: " +
wenzelm@48639
   449
      (heap match {
wenzelm@48504
   450
        case Some(path) =>
wenzelm@48504
   451
          val file = path.file
wenzelm@48504
   452
          if (file.isFile) file.length.toString + " " + file.lastModified.toString
wenzelm@48504
   453
          else "-"
wenzelm@48504
   454
        case None => "-"
wenzelm@48504
   455
      })
wenzelm@48504
   456
  }
wenzelm@48504
   457
wenzelm@48639
   458
  private def read_stamps(path: Path): Option[(String, String, String)] =
wenzelm@48639
   459
    if (path.is_file) {
wenzelm@48639
   460
      val stream = new GZIPInputStream (new BufferedInputStream(new FileInputStream(path.file)))
wenzelm@48504
   461
      val reader = new BufferedReader(new InputStreamReader(stream, Standard_System.charset))
wenzelm@48639
   462
      val (s, h1, h2) =
wenzelm@48639
   463
        try { (reader.readLine, reader.readLine, reader.readLine) }
wenzelm@48639
   464
        finally { reader.close }
wenzelm@48639
   465
      if (s != null && s.startsWith("sources: ") &&
wenzelm@48639
   466
          h1 != null && h1.startsWith("heap: ") &&
wenzelm@48639
   467
          h2 != null && h2.startsWith("heap: ")) Some((s, h1, h2))
wenzelm@48504
   468
      else None
wenzelm@48504
   469
    }
wenzelm@48504
   470
    else None
wenzelm@48504
   471
wenzelm@48504
   472
wenzelm@48425
   473
  /* build */
wenzelm@48424
   474
wenzelm@48509
   475
  def build(
wenzelm@48509
   476
    all_sessions: Boolean = false,
wenzelm@48511
   477
    build_heap: Boolean = false,
wenzelm@48595
   478
    clean_build: Boolean = false,
wenzelm@48509
   479
    more_dirs: List[Path] = Nil,
wenzelm@48509
   480
    session_groups: List[String] = Nil,
wenzelm@48509
   481
    max_jobs: Int = 1,
wenzelm@48509
   482
    no_build: Boolean = false,
wenzelm@48509
   483
    build_options: List[String] = Nil,
wenzelm@48509
   484
    system_mode: Boolean = false,
wenzelm@48509
   485
    verbose: Boolean = false,
wenzelm@48509
   486
    sessions: List[String] = Nil): Int =
wenzelm@48341
   487
  {
wenzelm@48509
   488
    val options = (Options.init() /: build_options)(_.define_simple(_))
wenzelm@48676
   489
    val (descendants, tree) =
wenzelm@48676
   490
      find_sessions(options, more_dirs).required(all_sessions, session_groups, sessions)
wenzelm@48676
   491
    val deps = dependencies(verbose, tree)
wenzelm@48676
   492
    val queue = Queue(tree)
wenzelm@48368
   493
wenzelm@48504
   494
    def make_stamp(name: String): String =
wenzelm@48676
   495
      sources_stamp(tree(name).entry_digest :: deps.sources(name))
wenzelm@48504
   496
wenzelm@48504
   497
    val (input_dirs, output_dir, browser_info) =
wenzelm@48504
   498
      if (system_mode) {
wenzelm@48504
   499
        val output_dir = Path.explode("~~/heaps/$ML_IDENTIFIER")
wenzelm@48504
   500
        (List(output_dir), output_dir, Path.explode("~~/browser_info"))
wenzelm@48504
   501
      }
wenzelm@48504
   502
      else {
wenzelm@48504
   503
        val output_dir = Path.explode("$ISABELLE_OUTPUT")
wenzelm@48504
   504
        (output_dir :: Isabelle_System.find_logics_dirs(), output_dir,
wenzelm@48504
   505
         Path.explode("$ISABELLE_BROWSER_INFO"))
wenzelm@48504
   506
      }
wenzelm@48363
   507
wenzelm@48373
   508
    // prepare log dir
wenzelm@48504
   509
    (output_dir + LOG).file.mkdirs()
wenzelm@48373
   510
wenzelm@48595
   511
    // optional cleanup
wenzelm@48595
   512
    if (clean_build) {
wenzelm@48595
   513
      for (name <- descendants) {
wenzelm@48595
   514
        val files =
wenzelm@48595
   515
          List(Path.basic(name), log(name), log_gz(name)).map(output_dir + _).filter(_.is_file)
wenzelm@48595
   516
        if (!files.isEmpty) echo("Cleaning " + name + " ...")
wenzelm@48595
   517
        if (!files.forall(p => p.file.delete)) echo(name + " FAILED to delete")
wenzelm@48595
   518
      }
wenzelm@48595
   519
    }
wenzelm@48595
   520
wenzelm@48425
   521
    // scheduler loop
wenzelm@48639
   522
    case class Result(current: Boolean, heap: String, rc: Int)
wenzelm@48639
   523
wenzelm@48425
   524
    @tailrec def loop(
wenzelm@48676
   525
      pending: Queue,
wenzelm@48674
   526
      running: Map[String, (String, Job)],
wenzelm@48639
   527
      results: Map[String, Result]): Map[String, Result] =
wenzelm@48425
   528
    {
wenzelm@48425
   529
      if (pending.is_empty) results
wenzelm@48547
   530
      else
wenzelm@48674
   531
        running.find({ case (_, (_, job)) => job.is_finished }) match {
wenzelm@48674
   532
          case Some((name, (parent_heap, job))) =>
wenzelm@48547
   533
            // finish job
wenzelm@48424
   534
wenzelm@48547
   535
            val (out, err, rc) = job.join
wenzelm@48547
   536
            echo(Library.trim_line(err))
wenzelm@48373
   537
wenzelm@48639
   538
            val heap =
wenzelm@48639
   539
              if (rc == 0) {
wenzelm@48639
   540
                (output_dir + log(name)).file.delete
wenzelm@48639
   541
wenzelm@48639
   542
                val sources = make_stamp(name)
wenzelm@48639
   543
                val heap = heap_stamp(job.output_path)
wenzelm@48639
   544
                File.write_gzip(output_dir + log_gz(name),
wenzelm@48674
   545
                  sources + "\n" + parent_heap + "\n" + heap + "\n" + out)
wenzelm@48639
   546
wenzelm@48639
   547
                heap
wenzelm@48639
   548
              }
wenzelm@48639
   549
              else {
wenzelm@48639
   550
                (output_dir + Path.basic(name)).file.delete
wenzelm@48639
   551
                (output_dir + log_gz(name)).file.delete
wenzelm@48639
   552
wenzelm@48639
   553
                File.write(output_dir + log(name), out)
wenzelm@48639
   554
                echo(name + " FAILED")
wenzelm@48661
   555
                if (rc != 130) {
wenzelm@48661
   556
                  echo("(see also " + (output_dir + log(name)).file.toString + ")")
wenzelm@48661
   557
                  val lines = split_lines(out)
wenzelm@48661
   558
                  val tail = lines.drop(lines.length - 20 max 0)
wenzelm@48661
   559
                  echo("\n" + cat_lines(tail))
wenzelm@48661
   560
                }
wenzelm@48639
   561
wenzelm@48639
   562
                no_heap
wenzelm@48639
   563
              }
wenzelm@48639
   564
            loop(pending - name, running - name, results + (name -> Result(false, heap, rc)))
wenzelm@48528
   565
wenzelm@48547
   566
          case None if (running.size < (max_jobs max 1)) =>
wenzelm@48547
   567
            // check/start next job
wenzelm@48547
   568
            pending.dequeue(running.isDefinedAt(_)) match {
wenzelm@48547
   569
              case Some((name, info)) =>
wenzelm@48639
   570
                val parent_result =
wenzelm@48639
   571
                  info.parent match {
wenzelm@48639
   572
                    case None => Result(true, no_heap, 0)
wenzelm@48639
   573
                    case Some(parent) => results(parent)
wenzelm@48639
   574
                  }
wenzelm@48547
   575
                val output = output_dir + Path.basic(name)
wenzelm@48547
   576
                val do_output = build_heap || queue.is_inner(name)
wenzelm@48547
   577
wenzelm@48639
   578
                val (current, heap) =
wenzelm@48547
   579
                {
wenzelm@48548
   580
                  input_dirs.find(dir => (dir + log_gz(name)).is_file) match {
wenzelm@48547
   581
                    case Some(dir) =>
wenzelm@48639
   582
                      read_stamps(dir + log_gz(name)) match {
wenzelm@48639
   583
                        case Some((s, h1, h2)) =>
wenzelm@48639
   584
                          val heap = heap_stamp(Some(dir + Path.basic(name)))
wenzelm@48639
   585
                          (s == make_stamp(name) && h1 == parent_result.heap && h2 == heap &&
wenzelm@48639
   586
                            !(do_output && heap == no_heap), heap)
wenzelm@48639
   587
                        case None => (false, no_heap)
wenzelm@48547
   588
                      }
wenzelm@48639
   589
                    case None => (false, no_heap)
wenzelm@48504
   590
                  }
wenzelm@48547
   591
                }
wenzelm@48639
   592
                val all_current = current && parent_result.current
wenzelm@48528
   593
wenzelm@48547
   594
                if (all_current)
wenzelm@48639
   595
                  loop(pending - name, running, results + (name -> Result(true, heap, 0)))
wenzelm@48547
   596
                else if (no_build)
wenzelm@48639
   597
                  loop(pending - name, running, results + (name -> Result(false, heap, 1)))
wenzelm@48639
   598
                else if (parent_result.rc == 0) {
wenzelm@48547
   599
                  echo((if (do_output) "Building " else "Running ") + name + " ...")
wenzelm@48674
   600
                  val job = new Job(name, info, output, do_output, verbose, browser_info)
wenzelm@48674
   601
                  loop(pending, running + (name -> (parent_result.heap, job)), results)
wenzelm@48547
   602
                }
wenzelm@48547
   603
                else {
wenzelm@48547
   604
                  echo(name + " CANCELLED")
wenzelm@48639
   605
                  loop(pending - name, running, results + (name -> Result(false, heap, 1)))
wenzelm@48547
   606
                }
wenzelm@48547
   607
              case None => sleep(); loop(pending, running, results)
wenzelm@48425
   608
            }
wenzelm@48425
   609
          case None => sleep(); loop(pending, running, results)
wenzelm@48373
   610
        }
wenzelm@48425
   611
    }
wenzelm@48425
   612
wenzelm@48583
   613
    val results =
wenzelm@48583
   614
      if (deps.is_empty) {
wenzelm@48583
   615
        echo("### Nothing to build")
wenzelm@48583
   616
        Map.empty
wenzelm@48583
   617
      }
wenzelm@48583
   618
      else loop(queue, Map.empty, Map.empty)
wenzelm@48583
   619
wenzelm@48639
   620
    val rc = (0 /: results)({ case (rc1, (_, res)) => rc1 max res.rc })
wenzelm@48504
   621
    if (rc != 0 && (verbose || !no_build)) {
wenzelm@48552
   622
      val unfinished =
wenzelm@48639
   623
        (for ((name, res) <- results.iterator if res.rc != 0) yield name).toList.sorted
wenzelm@48473
   624
      echo("Unfinished session(s): " + commas(unfinished))
wenzelm@48473
   625
    }
wenzelm@48473
   626
    rc
wenzelm@48341
   627
  }
wenzelm@48341
   628
wenzelm@48341
   629
wenzelm@48346
   630
  /* command line entry point */
wenzelm@48341
   631
wenzelm@48341
   632
  def main(args: Array[String])
wenzelm@48341
   633
  {
wenzelm@48346
   634
    Command_Line.tool {
wenzelm@48346
   635
      args.toList match {
wenzelm@48346
   636
        case
wenzelm@48346
   637
          Properties.Value.Boolean(all_sessions) ::
wenzelm@48511
   638
          Properties.Value.Boolean(build_heap) ::
wenzelm@48595
   639
          Properties.Value.Boolean(clean_build) ::
wenzelm@48425
   640
          Properties.Value.Int(max_jobs) ::
wenzelm@48469
   641
          Properties.Value.Boolean(no_build) ::
wenzelm@48447
   642
          Properties.Value.Boolean(system_mode) ::
wenzelm@48425
   643
          Properties.Value.Boolean(verbose) ::
wenzelm@48509
   644
          Command_Line.Chunks(more_dirs, session_groups, build_options, sessions) =>
wenzelm@48595
   645
            build(all_sessions, build_heap, clean_build, more_dirs.map(Path.explode),
wenzelm@48595
   646
              session_groups, max_jobs, no_build, build_options, system_mode, verbose, sessions)
wenzelm@48346
   647
        case _ => error("Bad arguments:\n" + cat_lines(args))
wenzelm@48341
   648
      }
wenzelm@48346
   649
    }
wenzelm@48341
   650
  }
wenzelm@48660
   651
wenzelm@48660
   652
wenzelm@48660
   653
  /* static outer syntax */
wenzelm@48660
   654
wenzelm@48660
   655
  // FIXME Symbol.decode!?
wenzelm@48660
   656
  def outer_syntax(session: String): Outer_Syntax =
wenzelm@48660
   657
  {
wenzelm@48676
   658
    val (_, tree) = find_sessions(Options.init(), Nil).required(false, Nil, List(session))
wenzelm@48676
   659
    dependencies(false, tree)(session).syntax
wenzelm@48660
   660
  }
wenzelm@48276
   661
}
wenzelm@48276
   662