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: 9586|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:# F; D, j& u- s$ N" t' V
3 l! _+ A) [, W% ?9 [: X% Q6 ?
public Object buildActions () {
0 E) N# _1 }- X" T7 a+ a    super.buildActions();
, B: I5 h3 p: @    * ~! h$ H: v" b& W1 g# T
    // Create the list of simulation actions. We put these in3 T7 t7 O8 o) c' l/ h1 V! v- S
    // an action group, because we want these actions to be  b" x0 s$ i8 I! v/ I5 E
    // executed in a specific order, but these steps should3 d& }9 N" U! B+ p: _& M( ]
    // take no (simulated) time. The M(foo) means "The message
$ @7 E  ^% u) f3 C  m( z    // called <foo>". You can send a message To a particular) ^$ m% V. C$ L, L. I, C$ B* p
    // object, or ForEach object in a collection., z8 U+ h6 o4 ]. a' [
          o! S3 j) k' p0 @% s, {( {
    // Note we update the heatspace in two phases: first run
( P5 _: c1 Q0 e# Z7 W    // diffusion, then run "updateWorld" to actually enact the
* n  H- R+ z( ~, K/ R0 Y    // changes the heatbugs have made. The ordering here is
8 O, W2 O9 i& w. |% q, K3 o    // significant!
4 E* E" g8 u* @  P% M. }1 [        
5 T3 @) R2 X+ Z" v    // Note also, that with the additional. C' P( y2 P3 t' C+ i& v
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
  H3 S2 u; }" R0 q& y5 n    // randomize the order in which the bugs actually run8 u5 W  V' u. \! z" D( z
    // their step rule.  This has the effect of removing any
2 U4 w7 k; G8 V& d5 X, b    // systematic bias in the iteration throught the heatbug4 g% k+ h$ h2 c" m/ ~9 v6 |- O
    // list from timestep to timestep
! X. O/ [' k. d( d        
8 @$ I0 }8 v  V# O$ D    // By default, all `createActionForEach' modelActions have
& _- ^  d4 z* Q9 Z, H9 q5 x    // a default order of `Sequential', which means that the- \7 w: H; Q3 g4 m7 c8 Z
    // order of iteration through the `heatbugList' will be: ^2 M6 z0 ]8 N9 W% t
    // identical (assuming the list order is not changed
- c8 C' ]% q: f: g3 n" \    // indirectly by some other process).
, u4 I0 ^0 f" e! P( f! G   
  W+ x6 q9 U. k    modelActions = new ActionGroupImpl (getZone ());
1 J. M8 I  [: g
7 B. N+ @1 r. u: O! \    try {0 ~( D$ X$ K2 `2 q) N
      modelActions.createActionTo$message
' w& s  a; Q8 `1 ]        (heat, new Selector (heat.getClass (), "stepRule", false));3 u, `7 f$ G/ C5 c. I0 S
    } catch (Exception e) {2 W0 H: L( z- x! A, |4 ^0 B$ r" L
      System.err.println ("Exception stepRule: " + e.getMessage ());) x: L0 C. V; M/ U8 Q
    }, v/ C4 R, U0 {* ^& m! p) E0 Q
! e+ {. P  O( [5 E6 P- A5 c: S3 o
    try {
4 s; b; M' A3 w7 D      Heatbug proto = (Heatbug) heatbugList.get (0);
/ X1 c% B( A7 C, b" h2 C      Selector sel =
! E: E& m! E- A        new Selector (proto.getClass (), "heatbugStep", false);
# C4 q5 j& b$ {1 d/ O) G      actionForEach =
$ c; Q& Y- J: C5 [* l: m- X: w$ J        modelActions.createFActionForEachHomogeneous$call
1 K  ?- p. \: }: p2 d8 U        (heatbugList,+ Q% B; f$ _( X+ i4 h3 t( h# J
         new FCallImpl (this, proto, sel,
) u+ N- @( O5 b/ x                        new FArgumentsImpl (this, sel)));
/ H$ |' p6 A# O# L. B9 t    } catch (Exception e) {6 c; M# g( V( A: D4 k2 B
      e.printStackTrace (System.err);
5 d  A# g7 y* o& l4 ~, l    }
# \' \: `6 P. E, A( l    ) G: X# p& D- A+ _+ R8 s, v
    syncUpdateOrder ();, q3 a8 b: `3 _5 a1 l
! r2 j3 y9 R; d) Q7 L" N
    try {
3 _4 F7 ~) ~, X; q$ O) G+ A      modelActions.createActionTo$message ( I! \8 T5 F* t* P( X* V$ E
        (heat, new Selector (heat.getClass (), "updateLattice", false));
* m! [9 G5 T2 L9 a( y( }9 Y! e    } catch (Exception e) {
( R/ y  h3 E6 M: M" L8 k. Z      System.err.println("Exception updateLattice: " + e.getMessage ());
+ E# j# P5 U  @: j0 d) j% l    }( v: t, p. |) @7 }6 P; h6 W
        
# R% Z9 ?. D' q( d    // Then we create a schedule that executes the
- t( z( z/ f: B" X5 r3 k/ r    // modelActions. modelActions is an ActionGroup, by itself it5 o; U' ^. g8 S; R* A
    // has no notion of time. In order to have it executed in
/ z0 u, S2 @3 A  i$ b  _; R/ s/ X# |- g    // time, we create a Schedule that says to use the
/ D: s/ r$ [- L% [& Z3 P* O) e0 E    // modelActions ActionGroup at particular times.  This0 m( t; Y) Z! e2 O6 @
    // schedule has a repeat interval of 1, it will loop every
& d+ h1 e  }/ Q3 A& q    // time step.  The action is executed at time 0 relative to
6 [* c8 W0 L* l    // the beginning of the loop.1 `: R. O7 {. ]: y* j

3 O6 k6 t: D1 s% [; ~' G8 k    // This is a simple schedule, with only one action that is
) e+ Z0 z. z' e3 `! j- q! z    // just repeated every time. See jmousetrap for more
' C& {  _; l& m+ d- b    // complicated schedules.8 ?9 _5 ?. l: O  L
  7 B# L2 Y9 Q2 s& [- L8 L
    modelSchedule = new ScheduleImpl (getZone (), 1);* r4 p2 r0 e  Y0 q
    modelSchedule.at$createAction (0, modelActions);
! ]: ]- b8 s* v8 r/ R        3 e: t! k) I' T6 r1 Q* `# v
    return this;
; D  B. Q, h1 @  H2 Z4 P. }3 o" U  }
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, 2026-3-12 05:45 , Processed in 0.013583 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