src/Pure/Tools/build.scala
author wenzelm
Mon Oct 09 21:12:22 2017 +0200 (19 months ago)
changeset 66822 4642cf4a7ebb
parent 66782 193c31b79a33
child 66841 5c32a072ca8b
permissions -rw-r--r--
tuned signature;
     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: String,
    28     input_heaps: List[String],
    29     output_heap: Option[String],
    30     return_code: Int)
    31   {
    32     def ok: Boolean = return_code == 0
    33   }
    34 
    35 
    36   /* queue with scheduling information */
    37 
    38   private object Queue
    39   {
    40     def load_timings(progress: Progress, store: Sessions.Store, name: String)
    41       : (List[Properties.T], Double) =
    42     {
    43       val no_timings: (List[Properties.T], Double) = (Nil, 0.0)
    44 
    45       store.find_database(name) match {
    46         case None => no_timings
    47         case Some(database) =>
    48           def ignore_error(msg: String) =
    49           {
    50             progress.echo_warning("Ignoring bad database: " +
    51               database.expand + (if (msg == "") "" else "\n" + msg))
    52             no_timings
    53           }
    54           try {
    55             using(SQLite.open_database(database))(db =>
    56             {
    57               val command_timings = store.read_command_timings(db, name)
    58               val session_timing =
    59                 store.read_session_timing(db, name) match {
    60                   case Markup.Elapsed(t) => t
    61                   case _ => 0.0
    62                 }
    63               (command_timings, session_timing)
    64             })
    65           }
    66           catch {
    67             case ERROR(msg) => ignore_error(msg)
    68             case exn: java.lang.Error => ignore_error(Exn.message(exn))
    69             case _: XML.Error => ignore_error("")
    70           }
    71       }
    72     }
    73 
    74     def apply(progress: Progress, sessions: Sessions.T, store: Sessions.Store): Queue =
    75     {
    76       val graph = sessions.build_graph
    77       val names = graph.keys
    78 
    79       val timings = names.map(name => (name, load_timings(progress, store, name)))
    80       val command_timings =
    81         Map(timings.map({ case (name, (ts, _)) => (name, ts) }): _*).withDefaultValue(Nil)
    82       val session_timing =
    83         Map(timings.map({ case (name, (_, t)) => (name, t) }): _*).withDefaultValue(0.0)
    84 
    85       def outdegree(name: String): Int = graph.imm_succs(name).size
    86 
    87       object Ordering extends scala.math.Ordering[String]
    88       {
    89         def compare_timing(name1: String, name2: String): Int =
    90         {
    91           val t1 = session_timing(name1)
    92           val t2 = session_timing(name2)
    93           if (t1 == 0.0 || t2 == 0.0) 0
    94           else t1 compare t2
    95         }
    96 
    97         def compare(name1: String, name2: String): Int =
    98           outdegree(name2) compare outdegree(name1) match {
    99             case 0 =>
   100               compare_timing(name2, name1) match {
   101                 case 0 =>
   102                   sessions(name2).timeout compare sessions(name1).timeout match {
   103                     case 0 => name1 compare name2
   104                     case ord => ord
   105                   }
   106                 case ord => ord
   107               }
   108             case ord => ord
   109           }
   110       }
   111 
   112       new Queue(graph, SortedSet(names: _*)(Ordering), command_timings)
   113     }
   114   }
   115 
   116   private class Queue(
   117     graph: Graph[String, Sessions.Info],
   118     order: SortedSet[String],
   119     val command_timings: String => List[Properties.T])
   120   {
   121     def is_inner(name: String): Boolean = !graph.is_maximal(name)
   122 
   123     def is_empty: Boolean = graph.is_empty
   124 
   125     def - (name: String): Queue =
   126       new Queue(graph.del_node(name),
   127         order - name,  // FIXME scala-2.10.0 TreeSet problem!?
   128         command_timings)
   129 
   130     def dequeue(skip: String => Boolean): Option[(String, Sessions.Info)] =
   131     {
   132       val it = order.iterator.dropWhile(name =>
   133         skip(name)
   134           || !graph.defined(name)  // FIXME scala-2.10.0 TreeSet problem!?
   135           || !graph.is_minimal(name))
   136       if (it.hasNext) { val name = it.next; Some((name, graph.get_node(name))) }
   137       else None
   138     }
   139   }
   140 
   141 
   142   /* PIDE protocol handler */
   143 
   144   class Handler(progress: Progress, session: Session, session_name: String)
   145     extends Session.Protocol_Handler
   146   {
   147     val result_error: Promise[String] = Future.promise
   148 
   149     override def exit() { result_error.cancel }
   150 
   151     private def build_session_finished(msg: Prover.Protocol_Output): Boolean =
   152     {
   153       val error_message =
   154         try { Pretty.string_of(Symbol.decode_yxml(msg.text)) }
   155         catch { case ERROR(msg) => msg }
   156       result_error.fulfill(error_message)
   157       session.send_stop()
   158       true
   159     }
   160 
   161     private def loading_theory(msg: Prover.Protocol_Output): Boolean =
   162       msg.properties match {
   163         case Markup.Loading_Theory(name) =>
   164           progress.theory(session_name, name)
   165           true
   166         case _ => false
   167       }
   168 
   169     val functions =
   170       List(
   171         Markup.BUILD_SESSION_FINISHED -> build_session_finished _,
   172         Markup.LOADING_THEORY -> loading_theory _)
   173   }
   174 
   175 
   176   /* job: running prover process */
   177 
   178   private class Job(progress: Progress,
   179     name: String,
   180     val info: Sessions.Info,
   181     sessions: Sessions.T,
   182     deps: Sessions.Deps,
   183     store: Sessions.Store,
   184     do_output: Boolean,
   185     verbose: Boolean,
   186     pide: Boolean,
   187     val numa_node: Option[Int],
   188     command_timings: List[Properties.T])
   189   {
   190     val output = store.output_dir + Path.basic(name)
   191     def output_path: Option[Path] = if (do_output) Some(output) else None
   192     output.file.delete
   193 
   194     val options =
   195       numa_node match {
   196         case None => info.options
   197         case Some(n) => info.options.string("ML_process_policy") = NUMA.policy(n)
   198       }
   199 
   200     private val graph_file = Isabelle_System.tmp_file("session_graph", "pdf")
   201     isabelle.graphview.Graph_File.write(options, graph_file, deps(name).session_graph_display)
   202 
   203     private val future_result: Future[Process_Result] =
   204       Future.thread("build") {
   205         val parent = info.parent.getOrElse("")
   206         val base = deps(name)
   207         val args_yxml =
   208           YXML.string_of_body(
   209             {
   210               import XML.Encode._
   211               pair(list(pair(string, int)), pair(list(properties), pair(bool, pair(bool,
   212                 pair(Path.encode, pair(list(pair(Path.encode, Path.encode)), pair(string,
   213                 pair(string, pair(string, pair(string, pair(Path.encode,
   214                 pair(list(pair(Options.encode, list(pair(string, properties)))),
   215                 pair(list(pair(string, string)), pair(list(string),
   216                 list(pair(string, string))))))))))))))))(
   217               (Symbol.codes, (command_timings, (do_output, (verbose,
   218                 (store.browser_info, (info.document_files, (File.standard_path(graph_file),
   219                 (parent, (info.chapter, (name, (Path.current,
   220                 (info.theories,
   221                 (base.global_theories.toList, (base.loaded_theories.keys,
   222                 base.dest_known_theories)))))))))))))))
   223             })
   224 
   225         val env =
   226           Isabelle_System.settings() +
   227             ("ISABELLE_ML_DEBUGGER" -> options.bool("ML_debugger").toString)
   228 
   229         def save_heap: String =
   230           "ML_Heap.share_common_data (); ML_Heap.save_child " +
   231             ML_Syntax.print_string_bytes(File.platform_path(output))
   232 
   233         if (pide && !Sessions.is_pure(name)) {
   234           val resources = new Resources(deps(parent))
   235           val session = new Session(options, resources)
   236           val handler = new Handler(progress, session, name)
   237           session.init_protocol_handler(handler)
   238 
   239           val session_result = Future.promise[Process_Result]
   240 
   241           Isabelle_Process.start(session, options, logic = parent,
   242             cwd = info.dir.file, env = env, sessions = Some(sessions), store = store,
   243             phase_changed =
   244             {
   245               case Session.Ready => session.protocol_command("build_session", args_yxml)
   246               case Session.Terminated(result) => session_result.fulfill(result)
   247               case _ =>
   248             })
   249 
   250           val result = session_result.join
   251           handler.result_error.join match {
   252             case "" => result
   253             case msg =>
   254               result.copy(
   255                 rc = result.rc max 1,
   256                 out_lines = result.out_lines ::: split_lines(Output.error_message_text(msg)))
   257           }
   258         }
   259         else {
   260           val args_file = Isabelle_System.tmp_file("build")
   261           File.write(args_file, args_yxml)
   262 
   263           val eval =
   264             "Command_Line.tool0 (fn () => (" +
   265             "Build.build " + ML_Syntax.print_string_bytes(File.standard_path(args_file)) +
   266             (if (do_output) "; " + save_heap else "") + "));"
   267 
   268           val process =
   269             if (Sessions.is_pure(name)) {
   270               ML_Process(options, raw_ml_system = true, cwd = info.dir.file,
   271                 args =
   272                   (for ((root, _) <- Thy_Header.ml_roots) yield List("--use", root)).flatten :::
   273                   List("--eval", eval),
   274                 env = env, sessions = Some(sessions), store = store,
   275                 cleanup = () => args_file.delete)
   276             }
   277             else {
   278               ML_Process(options, parent, List("--eval", eval), cwd = info.dir.file,
   279                 env = env, sessions = Some(sessions), store = store,
   280                 cleanup = () => args_file.delete)
   281             }
   282 
   283           process.result(
   284             progress_stdout = (line: String) =>
   285               Library.try_unprefix("\floading_theory = ", line) match {
   286                 case Some(theory) => progress.theory(name, theory)
   287                 case None =>
   288               },
   289             progress_limit =
   290               options.int("process_output_limit") match {
   291                 case 0 => None
   292                 case m => Some(m * 1000000L)
   293               },
   294             strict = false)
   295         }
   296       }
   297 
   298     def terminate: Unit = future_result.cancel
   299     def is_finished: Boolean = future_result.is_finished
   300 
   301     @volatile private var was_timeout = false
   302     private val timeout_request: Option[Event_Timer.Request] =
   303     {
   304       if (info.timeout > Time.zero)
   305         Some(Event_Timer.request(Time.now() + info.timeout) { terminate; was_timeout = true })
   306       else None
   307     }
   308 
   309     def join: Process_Result =
   310     {
   311       val result = future_result.join
   312 
   313       if (result.ok)
   314         Present.finish(progress, store.browser_info, graph_file, info, name)
   315 
   316       graph_file.delete
   317       timeout_request.foreach(_.cancel)
   318 
   319       if (result.interrupted) {
   320         if (was_timeout) result.error(Output.error_message_text("Timeout")).was_timeout
   321         else result.error(Output.error_message_text("Interrupt"))
   322       }
   323       else result
   324     }
   325   }
   326 
   327 
   328 
   329   /** build with results **/
   330 
   331   class Results private[Build](results: Map[String, (Option[Process_Result], Sessions.Info)])
   332   {
   333     def sessions: Set[String] = results.keySet
   334     def cancelled(name: String): Boolean = results(name)._1.isEmpty
   335     def apply(name: String): Process_Result = results(name)._1.getOrElse(Process_Result(1))
   336     def info(name: String): Sessions.Info = results(name)._2
   337     val rc =
   338       (0 /: results.iterator.map(
   339         { case (_, (Some(r), _)) => r.rc case (_, (None, _)) => 1 }))(_ max _)
   340     def ok: Boolean = rc == 0
   341 
   342     override def toString: String = rc.toString
   343   }
   344 
   345   def build(
   346     options: Options,
   347     progress: Progress = No_Progress,
   348     check_unknown_files: Boolean = false,
   349     build_heap: Boolean = false,
   350     clean_build: Boolean = false,
   351     dirs: List[Path] = Nil,
   352     select_dirs: List[Path] = Nil,
   353     numa_shuffling: Boolean = false,
   354     max_jobs: Int = 1,
   355     list_files: Boolean = false,
   356     check_keywords: Set[String] = Set.empty,
   357     no_build: Boolean = false,
   358     soft_build: Boolean = false,
   359     system_mode: Boolean = false,
   360     verbose: Boolean = false,
   361     pide: Boolean = false,
   362     requirements: Boolean = false,
   363     all_sessions: Boolean = false,
   364     base_sessions: List[String] = Nil,
   365     exclude_session_groups: List[String] = Nil,
   366     exclude_sessions: List[String] = Nil,
   367     session_groups: List[String] = Nil,
   368     sessions: List[String] = Nil,
   369     selection: Sessions.Selection = Sessions.Selection.empty): Results =
   370   {
   371     val build_options = options.int.update("completion_limit", 0).bool.update("ML_statistics", true)
   372 
   373     val store = Sessions.store(system_mode)
   374 
   375 
   376     /* session selection and dependencies */
   377 
   378     val full_sessions = Sessions.load(build_options, dirs, select_dirs)
   379 
   380     def sources_stamp(deps: Sessions.Deps, name: String): String =
   381     {
   382       val digests =
   383         full_sessions(name).meta_digest :: deps.sources(name) ::: deps.imported_sources(name)
   384       SHA1.digest(cat_lines(digests.map(_.toString).sorted)).toString
   385     }
   386 
   387     val (selected, selected_sessions, deps) =
   388     {
   389       val (selected0, selected_sessions0) =
   390         full_sessions.selection(
   391             Sessions.Selection(requirements, all_sessions, base_sessions, exclude_session_groups,
   392               exclude_sessions, session_groups, sessions) ++ selection)
   393 
   394       val deps0 =
   395         Sessions.deps(selected_sessions0, progress = progress, inlined_files = true,
   396           verbose = verbose, list_files = list_files, check_keywords = check_keywords,
   397           global_theories = full_sessions.global_theories).check_errors
   398 
   399       if (soft_build) {
   400         val outdated =
   401           selected0.flatMap(name =>
   402             store.find_database(name) match {
   403               case Some(database) =>
   404                 using(SQLite.open_database(database))(store.read_build(_, name)) match {
   405                   case Some(build)
   406                   if build.ok && build.sources == sources_stamp(deps0, name) => None
   407                   case _ => Some(name)
   408                 }
   409               case None => Some(name)
   410             })
   411         val (selected, selected_sessions) =
   412           full_sessions.selection(Sessions.Selection(sessions = outdated))
   413         val deps =
   414           Sessions.deps(selected_sessions, inlined_files = true,
   415             global_theories = full_sessions.global_theories).check_errors
   416         (selected, selected_sessions, deps)
   417       }
   418       else (selected0, selected_sessions0, deps0)
   419     }
   420 
   421 
   422     /* check unknown files */
   423 
   424     if (check_unknown_files) {
   425       val source_files =
   426         (for {
   427           (_, base) <- deps.session_bases.iterator
   428           (path, _) <- base.sources.iterator
   429         } yield path).toList
   430       val unknown_files = Mercurial.unknown_files(source_files)
   431       if (unknown_files.nonEmpty) {
   432         progress.echo_warning("Unknown files (not part of a Mercurial repository):" +
   433           unknown_files.map(path => path.expand.implode).sorted.mkString("\n  ", "\n  ", ""))
   434       }
   435     }
   436 
   437 
   438     /* main build process */
   439 
   440     val queue = Queue(progress, selected_sessions, store)
   441 
   442     store.prepare_output()
   443 
   444     // optional cleanup
   445     if (clean_build) {
   446       for (name <- full_sessions.build_descendants(selected)) {
   447         val files =
   448           List(Path.basic(name), store.database(name), store.log(name), store.log_gz(name)).
   449             map(store.output_dir + _).filter(_.is_file)
   450         if (files.nonEmpty) progress.echo("Cleaning " + name + " ...")
   451         if (!files.forall(p => p.file.delete)) progress.echo(name + " FAILED to delete")
   452       }
   453     }
   454 
   455     // scheduler loop
   456     case class Result(
   457       current: Boolean,
   458       heap_stamp: Option[String],
   459       process: Option[Process_Result],
   460       info: Sessions.Info)
   461     {
   462       def ok: Boolean =
   463         process match {
   464           case None => false
   465           case Some(res) => res.rc == 0
   466         }
   467     }
   468 
   469     def sleep()
   470     {
   471       try { Thread.sleep(500) }
   472       catch { case Exn.Interrupt() => Exn.Interrupt.impose() }
   473     }
   474 
   475     val numa_nodes = new NUMA.Nodes(numa_shuffling)
   476 
   477     @tailrec def loop(
   478       pending: Queue,
   479       running: Map[String, (List[String], Job)],
   480       results: Map[String, Result]): Map[String, Result] =
   481     {
   482       def used_node(i: Int): Boolean =
   483         running.iterator.exists(
   484           { case (_, (_, job)) => job.numa_node.isDefined && job.numa_node.get == i })
   485 
   486       if (pending.is_empty) results
   487       else {
   488         if (progress.stopped)
   489           for ((_, (_, job)) <- running) job.terminate
   490 
   491         running.find({ case (_, (_, job)) => job.is_finished }) match {
   492           case Some((name, (input_heaps, job))) =>
   493             //{{{ finish job
   494 
   495             val process_result = job.join
   496 
   497             val log_lines = process_result.out_lines.filterNot(_.startsWith("\f"))
   498             val process_result_tail =
   499             {
   500               val tail = job.info.options.int("process_output_tail")
   501               process_result.copy(
   502                 out_lines =
   503                   "(see also " + (store.output_dir + store.log(name)).file.toString + ")" ::
   504                   (if (tail == 0) log_lines else log_lines.drop(log_lines.length - tail max 0)))
   505             }
   506 
   507 
   508             // write log file
   509             val heap_stamp =
   510               if (process_result.ok) {
   511                 (store.output_dir + store.log(name)).file.delete
   512                 val heap_stamp =
   513                   for (path <- job.output_path if path.is_file)
   514                     yield Sessions.write_heap_digest(path)
   515 
   516                 File.write_gzip(store.output_dir + store.log_gz(name), terminate_lines(log_lines))
   517 
   518                 heap_stamp
   519               }
   520               else {
   521                 (store.output_dir + Path.basic(name)).file.delete
   522                 (store.output_dir + store.log_gz(name)).file.delete
   523 
   524                 File.write(store.output_dir + store.log(name), terminate_lines(log_lines))
   525 
   526                 None
   527               }
   528 
   529             // write database
   530             {
   531               val database = store.output_dir + store.database(name)
   532               database.file.delete
   533 
   534               using(SQLite.open_database(database))(db =>
   535                 store.write_session_info(db, name,
   536                   build_log =
   537                     Build_Log.Log_File(name, process_result.out_lines).
   538                       parse_session_info(
   539                         command_timings = true, ml_statistics = true, task_statistics = true),
   540                   build =
   541                     Session_Info(sources_stamp(deps, name), input_heaps, heap_stamp,
   542                       process_result.rc)))
   543             }
   544 
   545             // messages
   546             process_result.err_lines.foreach(progress.echo(_))
   547 
   548             if (process_result.ok)
   549               progress.echo("Finished " + name + " (" + process_result.timing.message_resources + ")")
   550             else {
   551               progress.echo(name + " FAILED")
   552               if (!process_result.interrupted) progress.echo(process_result_tail.out)
   553             }
   554 
   555             loop(pending - name, running - name,
   556               results + (name -> Result(false, heap_stamp, Some(process_result_tail), job.info)))
   557             //}}}
   558           case None if running.size < (max_jobs max 1) =>
   559             //{{{ check/start next job
   560             pending.dequeue(running.isDefinedAt(_)) match {
   561               case Some((name, info)) =>
   562                 val ancestor_results = selected_sessions.build_ancestors(name).map(results(_))
   563                 val ancestor_heaps = ancestor_results.flatMap(_.heap_stamp)
   564 
   565                 val do_output = build_heap || Sessions.is_pure(name) || queue.is_inner(name)
   566 
   567                 val (current, heap_stamp) =
   568                 {
   569                   store.find_database_heap(name) match {
   570                     case Some((database, heap_stamp)) =>
   571                       using(SQLite.open_database(database))(store.read_build(_, name)) match {
   572                         case Some(build) =>
   573                           val current =
   574                             build.ok &&
   575                             build.sources == sources_stamp(deps, name) &&
   576                             build.input_heaps == ancestor_heaps &&
   577                             build.output_heap == heap_stamp &&
   578                             !(do_output && heap_stamp.isEmpty)
   579                           (current, heap_stamp)
   580                         case None => (false, None)
   581                       }
   582                     case None => (false, None)
   583                   }
   584                 }
   585                 val all_current = current && ancestor_results.forall(_.current)
   586 
   587                 if (all_current)
   588                   loop(pending - name, running,
   589                     results + (name -> Result(true, heap_stamp, Some(Process_Result(0)), info)))
   590                 else if (no_build) {
   591                   if (verbose) progress.echo("Skipping " + name + " ...")
   592                   loop(pending - name, running,
   593                     results + (name -> Result(false, heap_stamp, Some(Process_Result(1)), info)))
   594                 }
   595                 else if (ancestor_results.forall(_.ok) && !progress.stopped) {
   596                   val numa_node = numa_nodes.next(used_node(_))
   597                   progress.echo((if (do_output) "Building " else "Running ") + name + " ...")
   598                   val job =
   599                     new Job(progress, name, info, selected_sessions, deps, store, do_output,
   600                       verbose, pide, numa_node, queue.command_timings(name))
   601                   loop(pending, running + (name -> (ancestor_heaps, job)), results)
   602                 }
   603                 else {
   604                   progress.echo(name + " CANCELLED")
   605                   loop(pending - name, running,
   606                     results + (name -> Result(false, heap_stamp, None, info)))
   607                 }
   608               case None => sleep(); loop(pending, running, results)
   609             }
   610             ///}}}
   611           case None => sleep(); loop(pending, running, results)
   612         }
   613       }
   614     }
   615 
   616 
   617     /* build results */
   618 
   619     val results0 =
   620       if (deps.is_empty) {
   621         progress.echo_warning("Nothing to build")
   622         Map.empty[String, Result]
   623       }
   624       else loop(queue, Map.empty, Map.empty)
   625 
   626     val results =
   627       new Results(
   628         (for ((name, result) <- results0.iterator)
   629           yield (name, (result.process, result.info))).toMap)
   630 
   631     if (results.rc != 0 && (verbose || !no_build)) {
   632       val unfinished =
   633         (for {
   634           name <- results.sessions.iterator
   635           if !results(name).ok
   636          } yield name).toList.sorted
   637       progress.echo("Unfinished session(s): " + commas(unfinished))
   638     }
   639 
   640 
   641     /* global browser info */
   642 
   643     if (!no_build) {
   644       val browser_chapters =
   645         (for {
   646           (name, result) <- results0.iterator
   647           if result.ok
   648           info = full_sessions(name)
   649           if info.options.bool("browser_info")
   650         } yield (info.chapter, (name, info.description))).toList.groupBy(_._1).
   651             map({ case (chapter, es) => (chapter, es.map(_._2)) }).filterNot(_._2.isEmpty)
   652 
   653       for ((chapter, entries) <- browser_chapters)
   654         Present.update_chapter_index(store.browser_info, chapter, entries)
   655 
   656       if (browser_chapters.nonEmpty) Present.make_global_index(store.browser_info)
   657     }
   658 
   659     results
   660   }
   661 
   662 
   663   /* Isabelle tool wrapper */
   664 
   665   val isabelle_tool = Isabelle_Tool("build", "build and manage Isabelle sessions", args =>
   666   {
   667     val build_options = Word.explode(Isabelle_System.getenv("ISABELLE_BUILD_OPTIONS"))
   668 
   669     var base_sessions: List[String] = Nil
   670     var select_dirs: List[Path] = Nil
   671     var numa_shuffling = false
   672     var pide = false
   673     var requirements = false
   674     var soft_build = false
   675     var exclude_session_groups: List[String] = Nil
   676     var all_sessions = false
   677     var build_heap = false
   678     var clean_build = false
   679     var dirs: List[Path] = Nil
   680     var session_groups: List[String] = Nil
   681     var max_jobs = 1
   682     var check_keywords: Set[String] = Set.empty
   683     var list_files = false
   684     var no_build = false
   685     var options = (Options.init() /: build_options)(_ + _)
   686     var system_mode = false
   687     var verbose = false
   688     var exclude_sessions: List[String] = Nil
   689 
   690     val getopts = Getopts("""
   691 Usage: isabelle build [OPTIONS] [SESSIONS ...]
   692 
   693   Options are:
   694     -B NAME      include session NAME and all descendants
   695     -D DIR       include session directory and select its sessions
   696     -N           cyclic shuffling of NUMA CPU nodes (performance tuning)
   697     -P           build via PIDE protocol
   698     -R           operate on requirements of selected sessions
   699     -S           soft build: only observe changes of sources, not heap images
   700     -X NAME      exclude sessions from group NAME and all descendants
   701     -a           select all sessions
   702     -b           build heap images
   703     -c           clean build
   704     -d DIR       include session directory
   705     -g NAME      select session group NAME
   706     -j INT       maximum number of parallel jobs (default 1)
   707     -k KEYWORD   check theory sources for conflicts with proposed keywords
   708     -l           list session source files
   709     -n           no build -- test dependencies only
   710     -o OPTION    override Isabelle system OPTION (via NAME=VAL or NAME)
   711     -s           system build mode: produce output in ISABELLE_HOME
   712     -v           verbose
   713     -x NAME      exclude session NAME and all descendants
   714 
   715   Build and manage Isabelle sessions, depending on implicit settings:
   716 
   717 """ + Library.prefix_lines("  ", Build_Log.Settings.show()) + "\n",
   718       "B:" -> (arg => base_sessions = base_sessions ::: List(arg)),
   719       "D:" -> (arg => select_dirs = select_dirs ::: List(Path.explode(arg))),
   720       "N" -> (_ => numa_shuffling = true),
   721       "P" -> (_ => pide = true),
   722       "R" -> (_ => requirements = true),
   723       "S" -> (_ => soft_build = true),
   724       "X:" -> (arg => exclude_session_groups = exclude_session_groups ::: List(arg)),
   725       "a" -> (_ => all_sessions = true),
   726       "b" -> (_ => build_heap = true),
   727       "c" -> (_ => clean_build = true),
   728       "d:" -> (arg => dirs = dirs ::: List(Path.explode(arg))),
   729       "g:" -> (arg => session_groups = session_groups ::: List(arg)),
   730       "j:" -> (arg => max_jobs = Value.Int.parse(arg)),
   731       "k:" -> (arg => check_keywords = check_keywords + arg),
   732       "l" -> (_ => list_files = true),
   733       "n" -> (_ => no_build = true),
   734       "o:" -> (arg => options = options + arg),
   735       "s" -> (_ => system_mode = true),
   736       "v" -> (_ => verbose = true),
   737       "x:" -> (arg => exclude_sessions = exclude_sessions ::: List(arg)))
   738 
   739     val sessions = getopts(args)
   740 
   741     val progress = new Console_Progress(verbose = verbose)
   742 
   743     val start_date = Date.now()
   744 
   745     if (verbose) {
   746       progress.echo(
   747         "Started at " + Build_Log.print_date(start_date) +
   748           " (" + Isabelle_System.getenv("ML_IDENTIFIER") + " on " + Isabelle_System.hostname() +")")
   749       progress.echo(Build_Log.Settings.show() + "\n")
   750     }
   751 
   752     val results =
   753       progress.interrupt_handler {
   754         build(options, progress,
   755           check_unknown_files = Mercurial.is_repository(Path.explode("~~")),
   756           build_heap = build_heap,
   757           clean_build = clean_build,
   758           dirs = dirs,
   759           select_dirs = select_dirs,
   760           numa_shuffling = NUMA.enabled_warning(progress, numa_shuffling),
   761           max_jobs = max_jobs,
   762           list_files = list_files,
   763           check_keywords = check_keywords,
   764           no_build = no_build,
   765           soft_build = soft_build,
   766           system_mode = system_mode,
   767           verbose = verbose,
   768           pide = pide,
   769           requirements = requirements,
   770           all_sessions = all_sessions,
   771           base_sessions = base_sessions,
   772           exclude_session_groups = exclude_session_groups,
   773           exclude_sessions = exclude_sessions,
   774           session_groups = session_groups,
   775           sessions = sessions)
   776       }
   777     val end_date = Date.now()
   778     val elapsed_time = end_date.time - start_date.time
   779 
   780     if (verbose) {
   781       progress.echo("\nFinished at " + Build_Log.print_date(end_date))
   782     }
   783 
   784     val total_timing =
   785       (Timing.zero /: results.sessions.iterator.map(a => results(a).timing))(_ + _).
   786         copy(elapsed = elapsed_time)
   787     progress.echo(total_timing.message_resources)
   788 
   789     sys.exit(results.rc)
   790   })
   791 }