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: 12632|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:7 j/ E4 X3 e; t6 H/ j& |
  @7 E  Q0 m/ F
public Object buildActions () {, p; u: F1 m% a3 [
    super.buildActions();0 V0 e5 m4 L/ c  M, b- \. Z
   
; ?( |% @, A  v. j0 Y; p0 n    // Create the list of simulation actions. We put these in  u5 J% B5 j3 f) R# i
    // an action group, because we want these actions to be
( w' X' @  V2 ~) L8 Z/ R# H    // executed in a specific order, but these steps should
7 J" h" y$ w9 d    // take no (simulated) time. The M(foo) means "The message3 f8 O1 x- W& T6 b+ `! p
    // called <foo>". You can send a message To a particular; N4 ?1 Q; G2 }% G4 P
    // object, or ForEach object in a collection.
3 N  [- ~# e8 Z: P        
+ R, Q2 P  |6 N4 P7 C$ n$ }4 L, S    // Note we update the heatspace in two phases: first run
; ^" r- b/ U8 F# s    // diffusion, then run "updateWorld" to actually enact the9 i6 ~0 ^; ~. }. c% }  i
    // changes the heatbugs have made. The ordering here is1 ]5 E; _3 n# W! {+ m8 _* D% C" J
    // significant!
9 E( I. p4 I- D8 b) t+ u+ p# @        8 B7 f; d& I7 G5 M/ L; Q
    // Note also, that with the additional
; \0 Q( T2 t9 I) S    // `randomizeHeatbugUpdateOrder' Boolean flag we can
) e+ d7 p' t' V% t; S& v' c    // randomize the order in which the bugs actually run
9 _, _2 _, \9 A# J) [" `$ X* t    // their step rule.  This has the effect of removing any
6 P1 S6 Z- K. q    // systematic bias in the iteration throught the heatbug
8 x; d: x- Q, j- j8 L    // list from timestep to timestep2 I2 `. }" X9 p  M* u$ V
        
5 x' s2 Z4 j8 w0 ^/ s3 ?$ {  x! q    // By default, all `createActionForEach' modelActions have
$ ^% b, C/ c2 S) ~7 T5 K    // a default order of `Sequential', which means that the" d, S2 h+ t" ]# L2 Q# ]
    // order of iteration through the `heatbugList' will be: u6 r" D2 c$ L9 L+ t) [
    // identical (assuming the list order is not changed
. T- X+ X8 n. [: ]3 p    // indirectly by some other process).8 [; s7 h9 i9 m8 _) h  s6 X
    3 n% o1 o" ]" m& w
    modelActions = new ActionGroupImpl (getZone ());+ K# D7 M: d! r6 R- v

0 ]6 [$ M7 _7 W8 F. ~# n    try {
- ~% q/ G, O, ^" ~6 C4 D/ O      modelActions.createActionTo$message
% g' i) w8 f8 W% l# p8 c; H5 ^1 C        (heat, new Selector (heat.getClass (), "stepRule", false));
' y8 ^+ G) h2 j% K6 ^, A: T% j0 F    } catch (Exception e) {
( O. `  h: f( A2 e8 ~: K      System.err.println ("Exception stepRule: " + e.getMessage ());
# W. s7 W3 _# h$ q1 U    }7 R; j4 a; T' G6 B& B

0 A) G, q$ F8 e# \    try {' J! E# p$ m! G& p6 }, ]0 f( x/ ?$ E6 p
      Heatbug proto = (Heatbug) heatbugList.get (0);
9 {( G4 x, d5 c( D! u3 L6 r      Selector sel = ! T; r( f2 i7 N# h$ k
        new Selector (proto.getClass (), "heatbugStep", false);
7 M, ?4 o' x/ m* t* m, b      actionForEach =
+ ~/ L: ~4 p3 y  P/ n$ b6 D        modelActions.createFActionForEachHomogeneous$call" I  s0 x( J4 X9 X+ k6 r8 i
        (heatbugList,) v5 q, G( R! Y% r
         new FCallImpl (this, proto, sel,3 I/ m; v. n) d
                        new FArgumentsImpl (this, sel)));) b% O* `2 b* X4 a! `& e9 N
    } catch (Exception e) {
- ]7 ]% ^' E; z8 {' B" V+ ~1 w$ x      e.printStackTrace (System.err);, m% [, L* C# K  \& m
    }2 t9 i  z/ b% b% \; a9 w
   
7 |1 ~  }! p2 H/ Y& a    syncUpdateOrder ();
: F2 b+ z( ]8 o: [/ B6 O
; p/ m0 h. P+ u% O, N) U    try {1 x) K$ N- u% P+ @% |
      modelActions.createActionTo$message ! N5 Y0 I9 w- d$ u& z2 W
        (heat, new Selector (heat.getClass (), "updateLattice", false));
& x( m, K5 d) i5 l# T0 ~8 Z    } catch (Exception e) {
" e/ P6 k/ [1 C      System.err.println("Exception updateLattice: " + e.getMessage ());5 z* ~1 F5 r* O. i# u" i! J+ \/ T$ L
    }7 S, V0 \# d9 N; \
        . O, e/ G& @! f' [  v+ S
    // Then we create a schedule that executes the) M# a9 O) ]% h) C) i
    // modelActions. modelActions is an ActionGroup, by itself it: l7 ?% d% M. Y7 O; ~8 T
    // has no notion of time. In order to have it executed in
2 s8 I+ [* T1 F7 R8 E    // time, we create a Schedule that says to use the
; e4 W9 ?* m: P: U. o; c    // modelActions ActionGroup at particular times.  This2 X4 y# J8 ?) ^, B
    // schedule has a repeat interval of 1, it will loop every
2 ]+ b" o; W: d/ ?$ H; K    // time step.  The action is executed at time 0 relative to
! V2 _2 q. F7 ]    // the beginning of the loop.2 t: H  M' |+ C4 r# m  \

% t1 ^# a1 J" Y3 L5 W    // This is a simple schedule, with only one action that is
; G( S5 @8 R8 f5 X5 |/ H% f    // just repeated every time. See jmousetrap for more
- B1 G# e1 a4 p  b0 ]; Z    // complicated schedules.
. @  `# S3 }/ k5 i) e  
2 Y6 j. w! A4 U    modelSchedule = new ScheduleImpl (getZone (), 1);# L' Z) [  g4 {7 C+ F
    modelSchedule.at$createAction (0, modelActions);
0 k. G( e6 I3 Q+ j- j        7 d# ]2 {* s, V3 Y3 _9 i3 S' S
    return this;$ ?9 H( @; t* s8 r6 T9 `* u' k
  }
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, 2026-9-13 03:17 , Processed in 0.015297 second(s), 12 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表