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: 11618|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 y5 B4 c, f$ t1 {. Y

5 D) c/ `' b4 m6 |% N public Object buildActions () {9 U. l5 M4 ^) q
    super.buildActions();* G1 `& x' A5 {% p* U. R
    4 o7 l* t( t, @4 L( Z
    // Create the list of simulation actions. We put these in# Q8 H' r' ?7 Z/ N, ]/ Z
    // an action group, because we want these actions to be
2 d. ~; Q$ t$ x- r$ {6 s    // executed in a specific order, but these steps should) N. u2 c$ E3 z* L
    // take no (simulated) time. The M(foo) means "The message
, Z0 J% _$ s3 J6 q  W% t, @* H$ I/ ?$ P    // called <foo>". You can send a message To a particular
( p7 D7 h. t: I    // object, or ForEach object in a collection.
3 G6 J- R; X0 ?; C1 D: M7 L        
& v8 P. Q$ M: m$ q9 P5 O    // Note we update the heatspace in two phases: first run
! E0 x4 M% F; G: S1 ?    // diffusion, then run "updateWorld" to actually enact the2 }7 d) I4 f  U
    // changes the heatbugs have made. The ordering here is
$ N1 [, _1 D2 E! l    // significant!
  `0 I, C8 C4 }! K7 D        
- l  w! ]7 @( E8 d$ W8 p    // Note also, that with the additional
8 m9 K2 a: J! G# j: Q% L# Q    // `randomizeHeatbugUpdateOrder' Boolean flag we can
2 y6 }( e- B$ E  a' P8 H    // randomize the order in which the bugs actually run% g7 v& l0 a4 I( f' w6 K! {% M
    // their step rule.  This has the effect of removing any+ k4 v; o! P4 ^1 F1 X6 P5 t
    // systematic bias in the iteration throught the heatbug
  T& i+ c8 J* P    // list from timestep to timestep
2 a% c$ b9 j( b6 p' z! [" q        " v1 M# h" E" q/ z
    // By default, all `createActionForEach' modelActions have: W# }0 T! O" k, n% J: n3 U( [
    // a default order of `Sequential', which means that the3 u+ g: x1 N$ D3 n( ]1 {
    // order of iteration through the `heatbugList' will be# o. J8 _7 h3 [" k
    // identical (assuming the list order is not changed
2 o0 e1 p! L, n7 Y    // indirectly by some other process).
+ ?4 ~) B7 z8 W3 a5 i4 A8 ]0 V    # K7 r- |  ~( Q$ ^
    modelActions = new ActionGroupImpl (getZone ());
" h3 `) r* N1 \8 F+ ^2 W8 p$ g( S$ ~5 N. h9 O' T
    try {
5 P  C/ T2 ]7 ?9 [' V      modelActions.createActionTo$message- f7 H) [- O1 N' ?; |4 c
        (heat, new Selector (heat.getClass (), "stepRule", false));- M) ]8 w( x/ Y0 {$ W& w9 z
    } catch (Exception e) {
1 _! e) H) T' {  `3 o8 D      System.err.println ("Exception stepRule: " + e.getMessage ());
. J" h: ^& Z2 w/ B: }0 ]+ W% _    }+ N: d5 R, `0 i
6 N4 w; B$ D$ v1 c
    try {& f" I0 [3 C  _7 v
      Heatbug proto = (Heatbug) heatbugList.get (0);
9 h( [, K! k- v$ w- k      Selector sel = * u: g& @8 @: K2 J* u) d
        new Selector (proto.getClass (), "heatbugStep", false);- @( u5 C1 r2 `: x8 |& |6 j) K
      actionForEach =
7 [9 C! c2 o% U& K: G/ Q3 \        modelActions.createFActionForEachHomogeneous$call9 L4 |2 @( X: K' A) I7 F
        (heatbugList,
6 k! k7 J0 j! [9 \         new FCallImpl (this, proto, sel,
& u1 p: o; z, }" ~+ y- j$ k                        new FArgumentsImpl (this, sel)));
( H! Q( `  y  _5 t    } catch (Exception e) {3 U  R) j. B' r3 J8 Y3 Y
      e.printStackTrace (System.err);/ B! o7 @1 q* {3 y
    }
7 i5 _  O3 t0 T$ r   
5 p, _7 e  Y! a. e& y* d0 {# t    syncUpdateOrder ();  @+ y" X" T, M

% `. ~3 F" W8 k/ z3 f* H    try {& h3 p7 n& f" v1 D2 \- u$ V3 [
      modelActions.createActionTo$message 7 k5 k; A) i/ z+ g. h  j
        (heat, new Selector (heat.getClass (), "updateLattice", false));
5 A/ M: l/ S4 k! K% F4 o    } catch (Exception e) {
, d6 [. R4 `0 [+ r: K/ y' J      System.err.println("Exception updateLattice: " + e.getMessage ());+ Y' U4 X$ m! B
    }" U' R+ p4 _, b% M
        . F! k6 s6 o$ D# t
    // Then we create a schedule that executes the
9 D( `8 y; \0 F. W    // modelActions. modelActions is an ActionGroup, by itself it# b0 P0 L5 W# U0 _% {0 Z( A
    // has no notion of time. In order to have it executed in/ D+ j7 ~3 G$ \  B. C1 h
    // time, we create a Schedule that says to use the
3 m: V9 {" N; B, f3 t0 D! n    // modelActions ActionGroup at particular times.  This6 C# T5 x  j) ~" ]; f8 C
    // schedule has a repeat interval of 1, it will loop every
  D# W) P/ `; o1 d. J    // time step.  The action is executed at time 0 relative to7 g) N* B8 F# Q' S
    // the beginning of the loop.  q6 g. t' {3 x9 r  a9 h/ l6 X
3 W" ^$ X( j5 R3 K
    // This is a simple schedule, with only one action that is" X8 n% t8 ?5 ]4 q
    // just repeated every time. See jmousetrap for more# Z( a2 c7 a* ]# A5 C, i
    // complicated schedules.
: E4 y4 D" }% y4 _# a2 _9 g* n7 T  |  
$ D# C' g) y- Z: E( c    modelSchedule = new ScheduleImpl (getZone (), 1);
/ U6 o" f. r8 N5 J8 w    modelSchedule.at$createAction (0, modelActions);
: P# y3 ?1 l( `: {# m        
" W2 f0 x) Y' k# J9 X    return this;7 T: {0 s/ L7 U* B$ `
  }
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, 2026-7-14 13:39 , Processed in 0.011561 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