设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 10018|回复: 0

[求助] 问jheatbugs-2001-03-28中某些代码

[复制链接]
发表于 2008-5-25 02:15:22 | 显示全部楼层 |阅读模式
5仿真币
HeatbugModelSwarm中buildActions部分,3个try分别是做什么?查了下refbook-java-2.2,解释太简略,还是不懂,高手指点,谢谢!代码如下:) A( a$ T/ [1 |) o

$ t: G0 X; v4 H7 j3 L( @$ M public Object buildActions () {
; Y4 H  j! _9 u$ D5 [( q    super.buildActions();
' [9 ^- b  u, d: c4 |1 _   
4 y2 N. R% W! }6 z8 U( o' ~  V" `    // Create the list of simulation actions. We put these in3 q) i1 P% S/ Y% x1 W
    // an action group, because we want these actions to be) L1 ]1 p( x, [
    // executed in a specific order, but these steps should/ J% ~9 d" R' R
    // take no (simulated) time. The M(foo) means "The message8 x: J: {% ^1 V5 I  z3 ?
    // called <foo>". You can send a message To a particular
+ H2 }3 O5 O- W  A; B  U) j    // object, or ForEach object in a collection.! Q8 T8 S* C; J! r3 T
        * u/ ?0 {: M1 e6 L/ W( m
    // Note we update the heatspace in two phases: first run
7 J1 j3 N$ M# L' ~* ?    // diffusion, then run "updateWorld" to actually enact the* |1 p5 H% L, z% i0 z/ v
    // changes the heatbugs have made. The ordering here is
( u) f8 r& Z8 I$ X    // significant!
4 Z& t' |; R( ]6 V        , a1 j$ a3 E  }6 ?
    // Note also, that with the additional
( e  [0 s) w& C6 R) o- ]  }    // `randomizeHeatbugUpdateOrder' Boolean flag we can
/ f9 q: A. C) J0 R' B, X    // randomize the order in which the bugs actually run
! I, _3 v) A, b    // their step rule.  This has the effect of removing any
* @5 |" r/ M8 j    // systematic bias in the iteration throught the heatbug
+ }2 Z1 k" M( J9 N    // list from timestep to timestep
) o5 w0 D5 j+ w& ~        
7 a$ O9 A* M. M    // By default, all `createActionForEach' modelActions have3 {2 a: [: ?5 L2 s7 l
    // a default order of `Sequential', which means that the
, _# p$ V7 v+ H" [1 n! c3 t: A. Z9 k    // order of iteration through the `heatbugList' will be
% U9 m9 ]" v! Y6 }6 \- U    // identical (assuming the list order is not changed
/ g% V; H1 s7 [% f: r  Q4 [& Z    // indirectly by some other process).) M- k' S0 ^$ C* K
    ! D$ q. X% y% v) L$ ]; ~
    modelActions = new ActionGroupImpl (getZone ());) S" D& O5 ?# Z* @* ~3 j
; ]% R. A, ~- S3 h( {
    try {! n$ n& I7 ?1 W5 m5 V6 I
      modelActions.createActionTo$message
9 A2 R% w! x$ O- w! K" }        (heat, new Selector (heat.getClass (), "stepRule", false));
+ L) y6 G7 \' K+ c9 }/ i+ t" R+ i    } catch (Exception e) {
% u6 ~1 D: X* I4 b) R3 ~% G3 ?      System.err.println ("Exception stepRule: " + e.getMessage ());" p; p! V, b9 u2 t- m: M
    }) f; M7 a4 f  P# o  [
; a7 z; ?2 Y/ C! R- v
    try {
$ E" A/ x- e: X; W      Heatbug proto = (Heatbug) heatbugList.get (0);! L/ C; n: B) s  g8 h+ x$ p4 g0 m' `
      Selector sel =
( ^; }' ~1 m  B        new Selector (proto.getClass (), "heatbugStep", false);' b0 e* C* u" D2 f, E0 w# A) _
      actionForEach =
8 P$ r" X. J- _' b0 N# X        modelActions.createFActionForEachHomogeneous$call
& Y* q. ]: G" J, [; I' k        (heatbugList,. ~3 B3 q: n1 A. {+ ~
         new FCallImpl (this, proto, sel,
" o6 [  o5 g, G* y# n                        new FArgumentsImpl (this, sel)));
' S$ q7 ^7 z7 z! f) [3 k# z( o9 s    } catch (Exception e) {
' J) C9 J8 N  V2 L; u# p      e.printStackTrace (System.err);
+ X! [6 N# z0 V) e    }
' W  [7 T" F4 V  J5 p   
2 ], w+ a- j; I4 c& Q    syncUpdateOrder ();) P$ ~& |/ S4 \2 z

% l" ~' S# Y2 O% f( N    try {
8 v+ |; Z8 G4 }7 B* Y      modelActions.createActionTo$message
& p4 o- G9 C: ]0 b1 _        (heat, new Selector (heat.getClass (), "updateLattice", false));
* D9 G0 O# f8 S/ E    } catch (Exception e) {3 n, ~  ]- x4 \- S* ?, E' i
      System.err.println("Exception updateLattice: " + e.getMessage ());
4 z" M% b9 u0 r( X    }  N; T7 M0 ?2 l) y& v  s. [
        . D  ?) |0 E8 W1 f
    // Then we create a schedule that executes the
& _( ~! ?8 g4 K% \7 N- b6 K    // modelActions. modelActions is an ActionGroup, by itself it6 b+ y8 w1 R$ d. \; N0 p. Z) b
    // has no notion of time. In order to have it executed in
3 ^! V; ~6 p  g1 x: s! U    // time, we create a Schedule that says to use the
$ r  O: x- M; n$ o0 M) z! ]5 ^    // modelActions ActionGroup at particular times.  This6 z$ w3 \+ U' d2 {. Y; C
    // schedule has a repeat interval of 1, it will loop every
3 [- B7 _0 o4 ?8 t; X" M    // time step.  The action is executed at time 0 relative to
  p4 Y' Z/ C$ e" ~4 {. Q" Z    // the beginning of the loop.
/ E" w( R3 _2 \+ [' Z2 b4 S$ Y& P6 }7 `, m$ H$ D
    // This is a simple schedule, with only one action that is
  G1 P- M2 r1 R  C    // just repeated every time. See jmousetrap for more
3 R* b8 D0 J8 Y    // complicated schedules.  w4 X+ U2 w+ T; x1 X  V
  7 Q2 y% m' z  ^/ e8 i
    modelSchedule = new ScheduleImpl (getZone (), 1);
  U& R+ C$ J7 _9 [* B- z  s1 A    modelSchedule.at$createAction (0, modelActions);% w: ~& L: ~- ?. V5 l
        
6 J' F3 d- a2 |* U. @    return this;  M" m( Z. i. S! o& K3 F# x
  }
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-4-8 09:18 , Processed in 0.013571 second(s), 11 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表