src/Pure/Tools/build.scala
author wenzelm
Sun Oct 01 13:07:31 2017 +0200 (19 months ago)
changeset 66737 2edc0c42c883
parent 66736 148891036469
child 66744 fec1504e5f03
permissions -rw-r--r--
option -B for "isabelle build" and "isabelle imports";
     1 /*  Title:      Pure/Tools/build.scala
     2     Author:     Makarius
     3     Options:    :folding=explicit:
     4 
     5 Build and manage Isabelle sessions.
     6 */
     7 
     8 package isabelle
     9 
    10 
    11 import java.io.{BufferedInputStream, FileInputStream,
    12   BufferedReader, InputStreamReader, IOException}
    13 import java.util.zip.GZIPInputStream
    14 
    15 import scala.collection.SortedSet
    16 import scala.collection.mutable
    17 import scala.annotation.tailrec
    18 
    19 
    20 object Build
    21 {
    22   /** auxiliary **/
    23 
    24   /* persistent build info */
    25 
    26   sealed case class Session_Info(
    27     sources: List[String],
    28     input_heaps: List[String],
    29     output_heap: Option[String],
    30     return_code: Int)
    31 
    32 
    33   /* queue with scheduling information */
    34 
    35   private object Queue
    36   {
    37     def load_timings(progress: Progress, store: Sessions.Store, name: String)
    38       : (List[Properties.T], Double) =
    39     {
    40       val no_timings: (List[Properties.T], Double) = (Nil, 0.0)
    41 
    42       store.find_database(name) match {
    43         case None => no_timings
    44         case Some(database) =>
    45           def ignore_error(msg: String) =
    46           {
    47             progress.echo_warning("Ignoring bad database: " +
    48               database.expand + (if (msg == "") "" else "\n" + msg))
    49             no_timings
    50           }
    51           try {
    52             using(SQLite.open_database(database))(db =>
    53             {
    54               val command_timings = store.read_command_timings(db, name)
    55               val session_timing =
    56                 store.read_session_timing(db, name) match {
    57                   case Markup.Elapsed(t) => t
    58                   case _ => 0.0
    59                 }
    60               (command_timings, session_timing)
    61             })
    62           }
    63           catch {
    64             case ERROR(msg) => ignore_error(msg)
    65             case exn: java.lang.Error => ignore_error(Exn.message(exn))
    66             case _: XML.Error => ignore_error("")
    67           }
    68       }
    69     }
    70 
    71     def apply(progress: Progress, sessions: Sessions.T, store: Sessions.Store): Queue =
    72     {
    73       val graph = sessions.build_graph
    74       val names = graph.keys
    75 
    76       val timings = names.map(name => (name, load_timings(progress, store, name)))
    77       val command_timings =
    78         Map(timings.map({ case (name, (ts, _)) => (name, ts) }): _*).withDefaultValue(Nil)
    79       val session_timing =
    80         Map(timings.map({ case (name, (_, t)) => (name, t) }): _*).withDefaultValue(0.0)
    81 
    82       def outdegree(name: String): Int = graph.imm_succs(name).size
    83 
    84       object Ordering extends scala.math.Ordering[String]
    85       {
    86         def compare_timing(name1: String, name2: String): Int =
    87         {
    88           val t1 = session_timing(name1)
    89           val t2 = session_timing(name2)
    90           if (t1 == 0.0 || t2 == 0.0) 0
    91           else t1 compare t2
    92         }
    93 
    94         def compare(name1: String, name2: String): Int =
    95           outdegree(name2) compare outdegree(name1) match {
    96             case 0 =>
    97               compare_timing(name2, name1) match {
    98                 case 0 =>
    99                   sessions(name2).timeout compare sessions(name1).timeout match {
   100                     case 0 => name1 compare name2
   101                     case ord => ord
   102                   }
   103                 case ord => ord
   104               }
   105             case ord => ord
   106           }
   107       }
   108 
   109       new Queue(graph, SortedSet(names: _*)(Ordering), command_timings)
   110     }
   111   }
   112 
   113   private class Queue(
   114     graph: Graph[String, Sessions.Info],
   115     order: SortedSet[String],
   116     val command_timings: String => List[Properties.T])
   117   {
   118     def is_inner(name: String): Boolean = !graph.is_maximal(name)
   119 
   120     def is_empty: Boolean = graph.is_empty
   121 
   122     def - (name: String): Queue =
   123       new Queue(graph.del_node(name),
   124         order - name,  // FIXME scala-2.10.0 TreeSet problem!?
   125         command_timings)
   126 
   127     def dequeue(skip: String => Boolean): Option[(String, Sessions.Info)] =
   128     {
   129       val it = order.iterator.dropWhile(name =>
   130         skip(name)
   131           || !graph.defined(name)  // FIXME scala-2.10.0 TreeSet problem!?
   132           || !graph.is_minimal(name))
   133       if (it.hasNext) { val name = it.next; Some((name, graph.get_node(name))) }
   134       else None
   135     }
   136   }
   137 
   138 
   139   /* PIDE protocol handler */
   140 
   141   class Handler(progress: Progress, session: Session, session_name: String)
   142     extends Session.Protocol_Handler
   143   {
   144     val result_error: Promise[String] = Future.promise
   145 
   146     override def exit() { result_error.cancel }
   147 
   148     private def build_session_finished(msg: Prover.Protocol_Output): Boolean =
   149     {
   150       val error_message =
   151         try { Pretty.string_of(Symbol.decode_yxml(msg.text)) }
   152         catch { case ERROR(msg) => msg }
   153       result_error.fulfill(error_message)
   154       session.send_stop()
   155       true
   156     }
   157 
   158     private def loading_theory(msg: Prover.Protocol_Output): Boolean =
   159       msg.properties match {
   160         case Markup.Loading_Theory(name) =>
   161           progress.theory(session_name, name)
   162           true
   163         case _ => false
   164       }
   165 
   166     val functions =
   167       List(
   168         Markup.BUILD_SESSION_FINISHED -> build_session_finished _,
   169         Markup.LOADING_THEORY -> loading_theory _)
   170   }
   171 
   172 
   173   /* job: running prover process */
   174 
   175   private class Job(progress: Progress,
   176     name: String,
   177     val info: Sessions.Info,
   178     sessions: Sessions.T,
   179     deps: Sessions.Deps,
   180     store: Sessions.Store,
   181     do_output: Boolean,
   182     verbose: Boolean,
   183     pide: Boolean,
   184     val numa_node: Option[Int],
   185     command_timings: List[Properties.T])
   186   {
   187     val output = store.output_dir + Path.basic(name)
   188     def output_path: Option[Path] = if (do_output) Some(output) else None
   189     output.file.delete
   190 
   191     val options =
   192       numa_node match {
   193         case None => info.options
   194         case Some(n) => info.options.string("ML_process_policy") = NUMA.policy(n)
   195       }
   196 
   197     private val graph_file = Isabelle_System.tmp_file("session_graph", "pdf")
   198     isabelle.graphview.Graph_File.write(options, graph_file, deps(name).session_graph)
   199 
   200     private val future_result: Future[Process_Result] =
   201       Future.thread("build") {
   202         val parent = info.parent.getOrElse("")
   203         val base = deps(name)
   204         val args_yxml =
   205           YXML.string_of_body(
   206             {
   207               import XML.Encode._
   208               pair(list(pair(string, int)), pair(list(properties), pair(bool, pair(bool,
   209                 pair(Path.encode, pair(list(pair(Path.encode, Path.encode)), pair(string,
   210                 pair(string, pair(string, pair(string, pair(Path.encode,
   211                 pair(list(pair(Options.encode, list(pair(string, properties)))),
   212                 pair(list(pair(string, string)), pair(list(string),
   213                 list(pair(string, string))))))))))))))))(
   214               (Symbol.codes, (command_timings, (do_output, (verbose,
   215                 (store.browser_info, (info.document_files, (File.standard_path(graph_file),
   216                 (parent, (info.chapter, (name, (Path.current,
   217                 (info.theories,
   218                 (base.global_theories.toList, (base.loaded_theories.keys,
   219                 base.dest_known_theories)))))))))))))))
   220             })
   221 
   222         val env =
   223           Isabelle_System.settings() +
   224             ("ISABELLE_ML_DEBUGGER" -> options.bool("ML_debugger").toString)
   225 
   226         def save_heap: String =
   227           "ML_Heap.share_common_data (); ML_Heap.save_child " +
   228             ML_Syntax.print_string0(File.platform_path(output))
   229 
   230         if (pide && !Sessions.is_pure(name)) {
   231           val resources = new Resources(deps(parent))
   232           val session = new Session(options, resources)
   233           val handler = new Handler(progress, session, name)
   234           session.init_protocol_handler(handler)
   235 
   236           val session_result = Future.promise[Process_Result]
   237 
   238           Isabelle_Process.start(session, options, logic = parent,
   239             cwd = info.dir.file, env = env, sessions = Some(sessions), store = store,
   240             phase_changed =
   241             {
   242               case Session.Ready => session.protocol_command("build_session", args_yxml)
   243               case Session.Terminated(result) => session_result.fulfill(result)
   244               case _ =>
   245             })
   246 
   247           val result = session_result.join
   248           handler.result_error.join match {
   249             case "" => result
   250             case msg =>
   251               result.copy(
   252                 rc = result.rc max 1,
   253                 out_lines = result.out_lines ::: split_lines(Output.error_message_text(msg)))
   254           }
   255         }
   256         else {
   257           val args_file = Isabelle_System.tmp_file("build")
   258           File.write(args_file, args_yxml)
   259 
   260           val eval =
   261             "Command_Line.tool0 (fn () => (" +
   262             "Build.build " + ML_Syntax.print_string0(File.standard_path(args_file)) +
   263             (if (do_output) "; " + save_heap else "") + "));"
   264 
   265           val process =
   266             if (Sessions.is_pure(name)) {
   267               ML_Process(options, raw_ml_system = true, cwd = info.dir.file,
   268                 args =
   269                   (for ((root, _) <- Thy_Header.ml_roots) yield List("--use", root)).flatten :::
   270                   List("--eval", eval),
   271                 env = env, sessions = Some(sessions), store = store,
   272                 cleanup = () => args_file.delete)
   273             }
   274             else {
   275               ML_Process(options, parent, List("--eval", eval), cwd = info.dir.file,
   276                 env = env, sessions = Some(sessions), store = store,
   277                 cleanup = () => args_file.delete)
   278             }
   279 
   280           process.result(
   281             progress_stdout = (line: String) =>
   282               Library.try_unprefix("\floading_theory = ", line) match {
   283                 case Some(theory) => progress.theory(name, theory)
   284                 case None =>
   285               },
   286             progress_limit =
   287               options.int("process_output_limit") match {
   288                 case 0 => None
   289                 case m => Some(m * 1000000L)
   290               },
   291             strict = false)
   292         }
   293       }
   294 
   295     def terminate: Unit = future_result.cancel
   296     def is_finished: Boolean = future_result.is_finished
   297 
   298     @volatile private var was_timeout = false
   299     private val timeout_request: Option[Event_Timer.Request] =
   300     {
   301       if (info.timeout > Time.zero)
   302         Some(Event_Timer.request(Time.now() + info.timeout) { terminate; was_timeout = true })
   303       else None
   304     }
   305 
   306     def join: Process_Result =
   307     {
   308       val result = future_result.join
   309 
   310       if (result.ok)
   311         Present.finish(progress, store.browser_info, graph_file, info, name)
   312 
   313       graph_file.delete
   314       timeout_request.foreach(_.cancel)
   315 
   316       if (result.interrupted) {
   317         if (was_timeout) result.error(Output.error_message_text("Timeout")).was_timeout
   318         else result.error(Output.error_message_text("Interrupt"))
   319       }
   320       else result
   321     }
   322   }
   323 
   324 
   325 
   326   /** build with results **/
   327 
   328   class Results private[Build](results: Map[String, (Option[Process_Result], Sessions.Info)])
   329   {
   330     def sessions: Set[String] = results.keySet
   331     def cancelled(name: String): Boolean = results(name)._1.isEmpty
   332     def apply(name: String): Process_Result = results(name)._1.getOrElse(Process_Result(1))
   333     def info(name: String): Sessions.Info = results(name)._2
   334     val rc =
   335       (0 /: results.iterator.map(
   336         { case (_, (Some(r), _)) => r.rc case (_, (None, _)) => 1 }))(_ max _)
   337     def ok: Boolean = rc == 0
   338 
   339     override def toString: String = rc.toString
   340   }
   341 
   342   def build(
   343     options: Options,
   344     progress: Progress = No_Progress,
   345     check_unknown_files: Boolean = false,
   346     build_heap: Boolean = false,
   347     clean_build: Boolean = false,
   348     dirs: List[Path] = Nil,
   349     select_dirs: List[Path] = Nil,
   350     numa_shuffling: Boolean = false,
   351     max_jobs: Int = 1,
   352     list_files: Boolean = false,
   353     check_keywords: Set[String] = Set.empty,
   354     no_build: Boolean = false,
   355     system_mode: Boolean = false,
   356     verbose: Boolean = false,
   357     pide: Boolean = false,
   358     requirements: Boolean = false,
   359     all_sessions: Boolean = false,
   360     base_sessions: List[String] = Nil,
   361     exclude_session_groups: List[String] = Nil,
   362     exclude_sessions: List[String] = Nil,
   363     session_groups: List[String] = Nil,
   364     sessions: List[String] = Nil,
   365     selection: Sessions.Selection = Sessions.Selection.empty): Results =
   366   {
   367     /* session selection and dependencies */
   368 
   369     val build_options = options.int.update("completion_limit", 0).bool.update("ML_statistics", true)
   370 
   371     val full_sessions = Sessions.load(build_options, dirs, select_dirs)
   372 
   373     val (selected, selected_sessions) =
   374       full_sessions.selection(
   375           Sessions.Selection(requirements, all_sessions, base_sessions, exclude_session_groups,
   376             exclude_sessions, session_groups, sessions) ++ selection)
   377 
   378     val deps =
   379       Sessions.deps(selected_sessions, progress = progress, inlined_files = true,
   380         verbose = verbose, list_files = list_files, check_keywords = check_keywords,
   381         global_theories = full_sessions.global_theories).check_errors
   382 
   383     def sources_stamp(name: String): List[String] =
   384       (selected_sessions(name).meta_digest :: deps.sources(name)).map(_.toString).sorted
   385 
   386     if (check_unknown_files) {
   387       val source_files =
   388         (for {
   389           (_, base) <- deps.session_bases.iterator
   390           (path, _) <- base.sources.iterator
   391         } yield path).toList
   392       val unknown_files = Mercurial.unknown_files(source_files)
   393       if (unknown_files.nonEmpty) {
   394         progress.echo_warning("Unknown files (not part of a Mercurial repository):" +
   395           unknown_files.map(path => path.expand.implode).sorted.mkString("\n  ", "\n  ", ""))
   396       }
   397     }
   398 
   399 
   400     /* main build process */
   401 
   402     val store = Sessions.store(system_mode)
   403     val queue = Queue(progress, selected_sessions, store)
   404 
   405     store.prepare_output()
   406 
   407     // optional cleanup
   408     if (clean_build) {
   409       for (name <- full_sessions.build_descendants(selected)) {
   410         val files =
   411           List(Path.basic(name), store.database(name), store.log(name), store.log_gz(name)).
   412             map(store.output_dir + _).filter(_.is_file)
   413         if (files.nonEmpty) progress.echo("Cleaning " + name + " ...")
   414         if (!files.forall(p => p.file.delete)) progress.echo(name + " FAILED to delete")
   415       }
   416     }
   417 
   418     // scheduler loop
   419     case class Result(
   420       current: Boolean,
   421       heap_stamp: Option[String],
   422       process: Option[Process_Result],
   423       info: Sessions.Info)
   424     {
   425       def ok: Boolean =
   426         process match {
   427           case None => false
   428           case Some(res) => res.rc == 0
   429         }
   430     }
   431 
   432     def sleep()
   433     {
   434       try { Thread.sleep(500) }
   435       catch { case Exn.Interrupt() => Exn.Interrupt.impose() }
   436     }
   437 
   438     val numa_nodes = new NUMA.Nodes(numa_shuffling)
   439 
   440     @tailrec def loop(
   441       pending: Queue,
   442       running: Map[String, (List[String], Job)],
   443       results: Map[String, Result]): Map[String, Result] =
   444     {
   445       def used_node(i: Int): Boolean =
   446         running.iterator.exists(
   447           { case (_, (_, job)) => job.numa_node.isDefined && job.numa_node.get == i })
   448 
   449       if (pending.is_empty) results
   450       else {
   451         if (progress.stopped)
   452           for ((_, (_, job)) <- running) job.terminate
   453 
   454         running.find({ case (_, (_, job)) => job.is_finished }) match {
   455           case Some((name, (input_heaps, job))) =>
   456             //{{{ finish job
   457 
   458             val process_result = job.join
   459 
   460             val log_lines = process_result.out_lines.filterNot(_.startsWith("\f"))
   461             val process_result_tail =
   462             {
   463               val tail = job.info.options.int("process_output_tail")
   464               process_result.copy(
   465                 out_lines =
   466                   "(see also " + (store.output_dir + store.log(name)).file.toString + ")" ::
   467                   (if (tail == 0) log_lines else log_lines.drop(log_lines.length - tail max 0)))
   468             }
   469 
   470 
   471             // write log file
   472             val heap_stamp =
   473               if (process_result.ok) {
   474                 (store.output_dir + store.log(name)).file.delete
   475                 val heap_stamp =
   476                   for (path <- job.output_path if path.is_file)
   477                     yield Sessions.write_heap_digest(path)
   478 
   479                 File.write_gzip(store.output_dir + store.log_gz(name), terminate_lines(log_lines))
   480 
   481                 heap_stamp
   482               }
   483               else {
   484                 (store.output_dir + Path.basic(name)).file.delete
   485                 (store.output_dir + store.log_gz(name)).file.delete
   486 
   487                 File.write(store.output_dir + store.log(name), terminate_lines(log_lines))
   488 
   489                 None
   490               }
   491 
   492             // write database
   493             {
   494               val database = store.output_dir + store.database(name)
   495               database.file.delete
   496 
   497               using(SQLite.open_database(database))(db =>
   498                 store.write_session_info(db, name,
   499                   build_log =
   500                     Build_Log.Log_File(name, process_result.out_lines).
   501                       parse_session_info(
   502                         command_timings = true, ml_statistics = true, task_statistics = true),
   503                   build =
   504                     Session_Info(sources_stamp(name), input_heaps, heap_stamp, process_result.rc)))
   505             }
   506 
   507             // messages
   508             process_result.err_lines.foreach(progress.echo(_))
   509 
   510             if (process_result.ok)
   511               progress.echo("Finished " + name + " (" + process_result.timing.message_resources + ")")
   512             else {
   513               progress.echo(name + " FAILED")
   514               if (!process_result.interrupted) progress.echo(process_result_tail.out)
   515             }
   516 
   517             loop(pending - name, running - name,
   518               results + (name -> Result(false, heap_stamp, Some(process_result_tail), job.info)))
   519             //}}}
   520           case None if running.size < (max_jobs max 1) =>
   521             //{{{ check/start next job
   522             pending.dequeue(running.isDefinedAt(_)) match {
   523               case Some((name, info)) =>
   524                 val ancestor_results = selected_sessions.build_ancestors(name).map(results(_))
   525                 val ancestor_heaps = ancestor_results.flatMap(_.heap_stamp)
   526 
   527                 val do_output = build_heap || Sessions.is_pure(name) || queue.is_inner(name)
   528 
   529                 val (current, heap_stamp) =
   530                 {
   531                   store.find_database_heap(name) match {
   532                     case Some((database, heap_stamp)) =>
   533                       using(SQLite.open_database(database))(store.read_build(_, name)) match {
   534                         case Some(build) =>
   535                           val current =
   536                             build.return_code == 0 &&
   537                             build.sources == sources_stamp(name) &&
   538                             build.input_heaps == ancestor_heaps &&
   539                             build.output_heap == heap_stamp &&
   540                             !(do_output && heap_stamp.isEmpty)
   541                           (current, heap_stamp)
   542                         case None => (false, None)
   543                       }
   544                     case None => (false, None)
   545                   }
   546                 }
   547                 val all_current = current && ancestor_results.forall(_.current)
   548 
   549                 if (all_current)
   550                   loop(pending - name, running,
   551                     results + (name -> Result(true, heap_stamp, Some(Process_Result(0)), info)))
   552                 else if (no_build) {
   553                   if (verbose) progress.echo("Skipping " + name + " ...")
   554                   loop(pending - name, running,
   555                     results + (name -> Result(false, heap_stamp, Some(Process_Result(1)), info)))
   556                 }
   557                 else if (ancestor_results.forall(_.ok) && !progress.stopped) {
   558                   val numa_node = numa_nodes.next(used_node(_))
   559                   progress.echo((if (do_output) "Building " else "Running ") + name + " ...")
   560                   val job =
   561                     new Job(progress, name, info, selected_sessions, deps, store, do_output,
   562                       verbose, pide, numa_node, queue.command_timings(name))
   563                   loop(pending, running + (name -> (ancestor_heaps, job)), results)
   564                 }
   565                 else {
   566                   progress.echo(name + " CANCELLED")
   567                   loop(pending - name, running,
   568                     results + (name -> Result(false, heap_stamp, None, info)))
   569                 }
   570               case None => sleep(); loop(pending, running, results)
   571             }
   572             ///}}}
   573           case None => sleep(); loop(pending, running, results)
   574         }
   575       }
   576     }
   577 
   578 
   579     /* build results */
   580 
   581     val results0 =
   582       if (deps.is_empty) {
   583         progress.echo_warning("Nothing to build")
   584         Map.empty[String, Result]
   585       }
   586       else loop(queue, Map.empty, Map.empty)
   587 
   588     val results =
   589       new Results(
   590         (for ((name, result) <- results0.iterator)
   591           yield (name, (result.process, result.info))).toMap)
   592 
   593     if (results.rc != 0 && (verbose || !no_build)) {
   594       val unfinished =
   595         (for {
   596           name <- results.sessions.iterator
   597           if !results(name).ok
   598          } yield name).toList.sorted
   599       progress.echo("Unfinished session(s): " + commas(unfinished))
   600     }
   601 
   602 
   603     /* global browser info */
   604 
   605     if (!no_build) {
   606       val browser_chapters =
   607         (for {
   608           (name, result) <- results0.iterator
   609           if result.ok
   610           info = full_sessions(name)
   611           if info.options.bool("browser_info")
   612         } yield (info.chapter, (name, info.description))).toList.groupBy(_._1).
   613             map({ case (chapter, es) => (chapter, es.map(_._2)) }).filterNot(_._2.isEmpty)
   614 
   615       for ((chapter, entries) <- browser_chapters)
   616         Present.update_chapter_index(store.browser_info, chapter, entries)
   617 
   618       if (browser_chapters.nonEmpty) Present.make_global_index(store.browser_info)
   619     }
   620 
   621     results
   622   }
   623 
   624 
   625   /* Isabelle tool wrapper */
   626 
   627   val isabelle_tool = Isabelle_Tool("build", "build and manage Isabelle sessions", args =>
   628   {
   629     val build_options = Word.explode(Isabelle_System.getenv("ISABELLE_BUILD_OPTIONS"))
   630 
   631     var base_sessions: List[String] = Nil
   632     var select_dirs: List[Path] = Nil
   633     var numa_shuffling = false
   634     var pide = false
   635     var requirements = false
   636     var exclude_session_groups: List[String] = Nil
   637     var all_sessions = false
   638     var build_heap = false
   639     var clean_build = false
   640     var dirs: List[Path] = Nil
   641     var session_groups: List[String] = Nil
   642     var max_jobs = 1
   643     var check_keywords: Set[String] = Set.empty
   644     var list_files = false
   645     var no_build = false
   646     var options = (Options.init() /: build_options)(_ + _)
   647     var system_mode = false
   648     var verbose = false
   649     var exclude_sessions: List[String] = Nil
   650 
   651     val getopts = Getopts("""
   652 Usage: isabelle build [OPTIONS] [SESSIONS ...]
   653 
   654   Options are:
   655     -B NAME      include session NAME and all descendants
   656     -D DIR       include session directory and select its sessions
   657     -N           cyclic shuffling of NUMA CPU nodes (performance tuning)
   658     -P           build via PIDE protocol
   659     -R           operate on requirements of selected sessions
   660     -X NAME      exclude sessions from group NAME and all descendants
   661     -a           select all sessions
   662     -b           build heap images
   663     -c           clean build
   664     -d DIR       include session directory
   665     -g NAME      select session group NAME
   666     -j INT       maximum number of parallel jobs (default 1)
   667     -k KEYWORD   check theory sources for conflicts with proposed keywords
   668     -l           list session source files
   669     -n           no build -- test dependencies only
   670     -o OPTION    override Isabelle system OPTION (via NAME=VAL or NAME)
   671     -s           system build mode: produce output in ISABELLE_HOME
   672     -v           verbose
   673     -x NAME      exclude session NAME and all descendants
   674 
   675   Build and manage Isabelle sessions, depending on implicit settings:
   676 
   677 """ + Library.prefix_lines("  ", Build_Log.Settings.show()) + "\n",
   678       "B:" -> (arg => base_sessions = base_sessions ::: List(arg)),
   679       "D:" -> (arg => select_dirs = select_dirs ::: List(Path.explode(arg))),
   680       "N" -> (_ => numa_shuffling = true),
   681       "P" -> (_ => pide = true),
   682       "R" -> (_ => requirements = true),
   683       "X:" -> (arg => exclude_session_groups = exclude_session_groups ::: List(arg)),
   684       "a" -> (_ => all_sessions = true),
   685       "b" -> (_ => build_heap = true),
   686       "c" -> (_ => clean_build = true),
   687       "d:" -> (arg => dirs = dirs ::: List(Path.explode(arg))),
   688       "g:" -> (arg => session_groups = session_groups ::: List(arg)),
   689       "j:" -> (arg => max_jobs = Value.Int.parse(arg)),
   690       "k:" -> (arg => check_keywords = check_keywords + arg),
   691       "l" -> (_ => list_files = true),
   692       "n" -> (_ => no_build = true),
   693       "o:" -> (arg => options = options + arg),
   694       "s" -> (_ => system_mode = true),
   695       "v" -> (_ => verbose = true),
   696       "x:" -> (arg => exclude_sessions = exclude_sessions ::: List(arg)))
   697 
   698     val sessions = getopts(args)
   699 
   700     val progress = new Console_Progress(verbose = verbose)
   701 
   702     val start_date = Date.now()
   703 
   704     if (verbose) {
   705       progress.echo(
   706         "Started at " + Build_Log.print_date(start_date) +
   707           " (" + Isabelle_System.getenv("ML_IDENTIFIER") + " on " + Isabelle_System.hostname() +")")
   708       progress.echo(Build_Log.Settings.show() + "\n")
   709     }
   710 
   711     val results =
   712       progress.interrupt_handler {
   713         build(options, progress,
   714           check_unknown_files = Mercurial.is_repository(Path.explode("~~")),
   715           build_heap = build_heap,
   716           clean_build = clean_build,
   717           dirs = dirs,
   718           select_dirs = select_dirs,
   719           numa_shuffling = NUMA.enabled_warning(progress, numa_shuffling),
   720           max_jobs = max_jobs,
   721           list_files = list_files,
   722           check_keywords = check_keywords,
   723           no_build = no_build,
   724           system_mode = system_mode,
   725           verbose = verbose,
   726           pide = pide,
   727           requirements = requirements,
   728           all_sessions = all_sessions,
   729           base_sessions = base_sessions,
   730           exclude_session_groups = exclude_session_groups,
   731           exclude_sessions = exclude_sessions,
   732           session_groups = session_groups,
   733           sessions = sessions)
   734       }
   735     val end_date = Date.now()
   736     val elapsed_time = end_date.time - start_date.time
   737 
   738     if (verbose) {
   739       progress.echo("\nFinished at " + Build_Log.print_date(end_date))
   740     }
   741 
   742     val total_timing =
   743       (Timing.zero /: results.sessions.iterator.map(a => results(a).timing))(_ + _).
   744         copy(elapsed = elapsed_time)
   745     progress.echo(total_timing.message_resources)
   746 
   747     sys.exit(results.rc)
   748   })
   749 }