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: 8396|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:9 K8 `$ a5 K% i- }( J3 r3 u2 h
3 I! \, D* F# ]- M! e
public Object buildActions () {
0 O" t, ~( g: V  o, g4 r    super.buildActions();. c5 N- k9 l7 U
   
7 K% _+ n+ R) f# R    // Create the list of simulation actions. We put these in! b: {; y* A5 S' h
    // an action group, because we want these actions to be
6 c* x& ~" r6 g+ H$ M* p& c! o    // executed in a specific order, but these steps should  Z4 P0 Q5 [; ]0 Y0 Y7 D. P
    // take no (simulated) time. The M(foo) means "The message
: e. Y2 c: ?4 y    // called <foo>". You can send a message To a particular( ?% y; H. ]. B  J# ?) y/ d1 k
    // object, or ForEach object in a collection.4 z) z* Z" \0 v: K6 E3 p
        
& ?! M/ Z, G* R2 n0 K    // Note we update the heatspace in two phases: first run
$ V8 k  X6 D' Y! j6 I; L+ W    // diffusion, then run "updateWorld" to actually enact the
: o; Y0 _1 j6 F- u9 Y& N    // changes the heatbugs have made. The ordering here is2 P, e& N7 p& k7 c$ ~- a+ R- f9 U6 x
    // significant!- `4 M% I" r* w$ N# O& m3 c
          b$ e: A9 z* n/ B
    // Note also, that with the additional7 ^$ R+ S) F" K& O) r2 }
    // `randomizeHeatbugUpdateOrder' Boolean flag we can; i1 d' m- P: i8 v- {& I
    // randomize the order in which the bugs actually run
9 ~# I! F5 n# X- Y/ H" J7 D    // their step rule.  This has the effect of removing any, U1 T- B9 k! w8 t
    // systematic bias in the iteration throught the heatbug7 F; e1 p, u$ V: _
    // list from timestep to timestep
5 v4 n+ _3 S  {        $ O, y. F  |- d) M2 Z
    // By default, all `createActionForEach' modelActions have( \9 ^* a( |% j+ \
    // a default order of `Sequential', which means that the8 y  y: D5 D- m8 n6 E! b
    // order of iteration through the `heatbugList' will be& N1 h4 ]0 Q# \6 D* X( r
    // identical (assuming the list order is not changed
; t. V0 G3 k) C# A) N  ~: E" T    // indirectly by some other process).  z* ]6 ]6 `2 x2 r. b
   
" z' V. B3 W7 _0 x6 R# Z7 Y" W    modelActions = new ActionGroupImpl (getZone ());
" G- E3 o* z, Q3 j% g
$ W3 Q: Y. j  ^# U0 N3 [. x- m    try {0 ?- K5 X  Y$ s& A0 s, X. L
      modelActions.createActionTo$message+ G* V: U  ~9 P7 Z# i
        (heat, new Selector (heat.getClass (), "stepRule", false));
$ i) D; J0 `1 C8 o, ]    } catch (Exception e) {; \, m1 z$ q. w1 w
      System.err.println ("Exception stepRule: " + e.getMessage ());
) N8 V6 `( Y5 A. N- G    }
6 l! }  d% d6 H3 T! X% c6 V5 s8 q. K+ P4 N0 h
    try {
. O8 ]' i9 }3 M1 ^* I      Heatbug proto = (Heatbug) heatbugList.get (0);
2 |8 N2 Q1 |( Q* g3 V4 D$ A      Selector sel = 5 k# }* z( R& e0 t3 m) L1 O
        new Selector (proto.getClass (), "heatbugStep", false);8 W! p3 }5 o1 [. F+ p* h( q- [" e
      actionForEach =# }& Y% F, Z, P/ t. q! ~
        modelActions.createFActionForEachHomogeneous$call# d9 B) R- z3 V7 j/ ~! C
        (heatbugList," U4 b4 ]4 |9 `
         new FCallImpl (this, proto, sel,
* f* m6 T1 N# G2 n/ `                        new FArgumentsImpl (this, sel)));
! N' W# X% s0 ~6 H8 H- c    } catch (Exception e) {
* q; Z3 J- I) |      e.printStackTrace (System.err);) E) f: ~! q' ^0 Y% p
    }$ G7 {4 w0 ?! V* j1 V
   
. R3 ^" g$ n) c' x$ _    syncUpdateOrder ();
1 z, z* K( D% ^; e1 S) X! Z" I" R& z: c$ i
    try {- T: |% g" c8 ]/ _: V6 m
      modelActions.createActionTo$message
7 E! t# F7 ?6 K- _% h# A, M        (heat, new Selector (heat.getClass (), "updateLattice", false));
' _" {) y+ R0 B4 X5 m    } catch (Exception e) {% F: S9 A" Z  W! S
      System.err.println("Exception updateLattice: " + e.getMessage ());
4 Y5 M9 J, s0 I/ @! x$ `    }
' `6 {+ j. y7 Q0 w+ j  K% X        6 [& ~3 I2 H. A  A$ i3 ?
    // Then we create a schedule that executes the
6 J3 J' W0 N+ e/ Y: P+ H) [' w    // modelActions. modelActions is an ActionGroup, by itself it& J! v7 E6 Z2 U( p  C( L
    // has no notion of time. In order to have it executed in, D+ v. \8 `( K  M+ S  b
    // time, we create a Schedule that says to use the/ b. ?0 T: Q3 j& }
    // modelActions ActionGroup at particular times.  This
  c0 j" _- Z8 U    // schedule has a repeat interval of 1, it will loop every2 h' k# n# t7 I4 E% _# O
    // time step.  The action is executed at time 0 relative to/ {6 z5 m& D+ v$ f8 K: E
    // the beginning of the loop.
6 N7 T3 U: \3 e" g
& n7 G. r% w* i6 l; D7 P: ~# ^    // This is a simple schedule, with only one action that is
$ M3 y9 T# y& G1 B    // just repeated every time. See jmousetrap for more
3 ~, A5 s6 {! X/ J! r4 E    // complicated schedules.% \4 U$ N5 S' G4 x
  ' D3 N, s! h' d+ _$ `# J  u
    modelSchedule = new ScheduleImpl (getZone (), 1);% o( e5 F4 ]5 t5 V& w9 H( b
    modelSchedule.at$createAction (0, modelActions);
% d5 |$ ]% Z5 T        . t1 F$ r! \) i' Q" u4 D
    return this;: E. ~* v* ]& Y
  }
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, 2025-12-29 15:19 , Processed in 0.013530 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