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: 9589|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:6 r6 m/ p2 q4 u; x
% b# {; x9 z/ {$ T
public Object buildActions () {) k  y' N/ W; E$ Y8 Q$ D+ I/ |% N
    super.buildActions();
1 F$ c" `: N8 {: B    ) U! U* a  T) p; D$ O7 X
    // Create the list of simulation actions. We put these in
, p, `5 K! O" K% X    // an action group, because we want these actions to be
4 n7 c, a2 t8 |5 ?    // executed in a specific order, but these steps should
8 r, [2 [2 x+ V# Y, I4 f1 F    // take no (simulated) time. The M(foo) means "The message, r8 ~4 @0 c# T6 {3 u% f5 w
    // called <foo>". You can send a message To a particular6 S5 ]0 p" d) {4 @( Q4 r7 n8 p
    // object, or ForEach object in a collection.  W& c6 [; \1 A" J
        7 M& Y0 i* ^6 w
    // Note we update the heatspace in two phases: first run
+ M% L( Z3 u/ V# T, S6 u7 W- @  S( n    // diffusion, then run "updateWorld" to actually enact the2 F8 O3 f( ~( x
    // changes the heatbugs have made. The ordering here is" ]/ |( C+ P6 K' ?3 U# r- @2 q  ^
    // significant!: N5 u( o, t. Z
        
' L& `0 s' f5 V, j9 s, ^    // Note also, that with the additional) R3 x1 B& h8 E  J6 e
    // `randomizeHeatbugUpdateOrder' Boolean flag we can5 f3 k7 d" F1 g& g$ Y, Q
    // randomize the order in which the bugs actually run1 r8 _/ \) A# c  @) e" e
    // their step rule.  This has the effect of removing any
) r% M5 ^8 A0 Y  z, k    // systematic bias in the iteration throught the heatbug
# r8 k# H3 J- C3 i* Z    // list from timestep to timestep
$ z5 v! x: P% ^8 A) z& c5 Q5 i        
; {1 p" f  _9 N; o1 k  ~    // By default, all `createActionForEach' modelActions have
  a, b* @; `% T) o    // a default order of `Sequential', which means that the
2 A! ^! S$ }4 Z    // order of iteration through the `heatbugList' will be
4 q' m2 W" s/ D8 r, n7 ?- N    // identical (assuming the list order is not changed* E! ?  d. [/ }1 ^
    // indirectly by some other process).9 z0 @) m0 w$ |8 f. r; z
   
' M. \1 t0 ~$ B. l0 ?. ^    modelActions = new ActionGroupImpl (getZone ());  d( z" d, k: ?' C" x
! d+ {6 }% ]' u/ g
    try {  _; |5 a' A+ x0 @3 f( S0 S
      modelActions.createActionTo$message
' [- I  X( N% h8 X        (heat, new Selector (heat.getClass (), "stepRule", false));
# f( P; O: X6 I1 z# S    } catch (Exception e) {
1 C( O' a* V) V) F      System.err.println ("Exception stepRule: " + e.getMessage ());
2 o/ A( r$ L, Z2 ]7 K, i% c& _    }
6 U0 Z( @6 U4 l; K2 Z# p, j5 `
1 a! P' Q! l' Q* e7 z( m    try {
. B& u2 D1 z3 ~! j      Heatbug proto = (Heatbug) heatbugList.get (0);
  m- g2 J  x3 P' p+ m      Selector sel =
) X8 c0 L# Z) l        new Selector (proto.getClass (), "heatbugStep", false);! J- R; C( E. [! _; Y
      actionForEach =! O6 K9 b9 j% k" N' y
        modelActions.createFActionForEachHomogeneous$call( l  b, W7 R& s& ]. E+ a9 a
        (heatbugList,1 Z* G; t& z2 s- c: b
         new FCallImpl (this, proto, sel,/ @& d5 c: l) E1 i: ~
                        new FArgumentsImpl (this, sel)));! w  Z% q: g# {2 e2 s& l
    } catch (Exception e) {& w. v- d. v0 J" Q) J: ~% x
      e.printStackTrace (System.err);
$ C  {1 T6 N. e3 y    }
" A# r6 Y: V. {- {. z# t6 h    - U, R7 ~, {% a& W$ U3 `
    syncUpdateOrder ();: G; z; R: ~) }  z6 ^
4 k( Q2 P5 [9 a* _; W/ ~
    try {3 R# K6 y4 _0 T' U3 q- D! s4 e% M
      modelActions.createActionTo$message
. b9 ?8 q6 K5 p3 R8 G9 r        (heat, new Selector (heat.getClass (), "updateLattice", false));" q4 m5 y9 F  @1 L/ [$ {5 J5 c
    } catch (Exception e) {* O) p: B1 F6 k* U. ?$ T
      System.err.println("Exception updateLattice: " + e.getMessage ());
% T) e7 z3 c" ~% B/ U# v    }
9 Y! \$ ~4 D; q$ d+ ?3 v5 r        
2 I# M& `  k  }  M4 M8 b8 n    // Then we create a schedule that executes the
. J  P2 N4 h) Y/ @" ^4 S7 D2 f    // modelActions. modelActions is an ActionGroup, by itself it4 D# R9 ^. B5 {& ~  t! V  F  h/ F
    // has no notion of time. In order to have it executed in
: N9 _+ J( e' q2 V0 C/ Z8 U    // time, we create a Schedule that says to use the
; B& B; g8 ~; _* i) R, ?1 ^2 _; ~# D    // modelActions ActionGroup at particular times.  This
- W' c: Y! Q. @1 e% m5 c    // schedule has a repeat interval of 1, it will loop every5 E5 e" M: d$ ?
    // time step.  The action is executed at time 0 relative to2 ~( v0 ]5 z: }% S* C8 f1 Q
    // the beginning of the loop.7 Q* c  [7 x/ n' }. {

2 t9 q( D2 L2 J) W* M    // This is a simple schedule, with only one action that is/ v; v; w6 n& x. L# O
    // just repeated every time. See jmousetrap for more
! X: C+ N6 c' {+ \: d" E5 v    // complicated schedules.
8 j& t! Y  d; F7 n9 K& ~  
6 o2 c( f1 _; {& }% r! f9 G    modelSchedule = new ScheduleImpl (getZone (), 1);' {, C. E& {) V% z6 t  {2 O
    modelSchedule.at$createAction (0, modelActions);/ R$ H' H+ C" @! p9 r& Y
        ; H. j. T5 a, l. H
    return this;. H$ p* I* j! x5 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, 2026-3-12 10:31 , Processed in 0.014624 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