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: 10992|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 w- n: x! A( y% h: p

; G( L4 {" Q) U public Object buildActions () {5 @; H- @8 ?- m2 y5 J% G
    super.buildActions();
' Q7 T$ M3 `8 F6 W( Z3 |    % Q& N% C& E0 p  X3 w
    // Create the list of simulation actions. We put these in
0 p9 }6 p5 p9 S7 m; ^3 g- d    // an action group, because we want these actions to be# g& o$ C9 x# x+ k1 S1 {
    // executed in a specific order, but these steps should
  ]1 Z1 u- ]8 x) W7 L9 y# C. [8 N    // take no (simulated) time. The M(foo) means "The message4 e1 A3 e& d7 h/ K4 Z" R3 r- N
    // called <foo>". You can send a message To a particular; m1 C7 E( k. ^
    // object, or ForEach object in a collection.
: i) N! ]4 H/ d        , y5 I- P; U- p5 z8 f9 _3 h
    // Note we update the heatspace in two phases: first run; `2 c6 R+ F# I7 d! C
    // diffusion, then run "updateWorld" to actually enact the
* U8 t5 @8 X6 O9 X' r7 T% X( Y    // changes the heatbugs have made. The ordering here is
7 J" r1 ^9 p8 F9 g, b0 ]    // significant!
6 J* b/ M: }$ ]3 Y- m2 V        
. C: C; {% U5 X) N    // Note also, that with the additional
5 P: z# a7 u5 P) x& [# V! ^    // `randomizeHeatbugUpdateOrder' Boolean flag we can! w3 H. d6 v; G
    // randomize the order in which the bugs actually run8 n5 j6 t8 j; H) N/ Z) K
    // their step rule.  This has the effect of removing any4 G0 M" `$ l0 x# S
    // systematic bias in the iteration throught the heatbug  B: v  O' r: X9 W$ r
    // list from timestep to timestep
7 w4 z/ U' O+ D; B. H$ t        
! C2 k1 j6 f0 A! V# z    // By default, all `createActionForEach' modelActions have
. C4 v5 A4 _# K/ A5 |5 n    // a default order of `Sequential', which means that the
- @# Y# j) g6 G( _3 F  I- B! A# ]    // order of iteration through the `heatbugList' will be
' W' Y& W, T+ N: h0 @    // identical (assuming the list order is not changed
+ x  _* E# ^5 z2 h2 X; f    // indirectly by some other process).
6 i( s3 n% K" F1 o/ G   
! v8 F6 A4 B5 b" P# \6 j% t    modelActions = new ActionGroupImpl (getZone ());  q7 M# ?- \1 ^7 J
: I9 N2 r7 W" W/ [% ^
    try {
7 l- n+ q4 w" ?! ?( i6 ~% @  f      modelActions.createActionTo$message, L. L9 r) S6 F) m% l, P
        (heat, new Selector (heat.getClass (), "stepRule", false));/ G* Z5 }* Q6 M% I
    } catch (Exception e) {
: v0 ~% A6 A3 Q7 b& {  h6 l      System.err.println ("Exception stepRule: " + e.getMessage ());
2 V8 o' F, A5 q4 P% y    }5 }; P+ \8 O8 z, N

7 k' s6 x5 u" Y% n* D) P+ n    try {+ Y! x( H$ k9 [" @4 `0 f$ G
      Heatbug proto = (Heatbug) heatbugList.get (0);
% Z7 f$ X) N2 Y" G1 S4 ^      Selector sel = + \5 L2 Y! F0 z! {8 V' }1 a
        new Selector (proto.getClass (), "heatbugStep", false);/ w  u, p3 {* I
      actionForEach =
5 r3 o  _6 g+ {  O$ G        modelActions.createFActionForEachHomogeneous$call
' n- b' l" B; ~$ l# E9 l* F        (heatbugList,
- ^2 {8 @& K$ x% e, S7 T         new FCallImpl (this, proto, sel,6 N4 g% G, V% Q2 z
                        new FArgumentsImpl (this, sel)));
% c' u) m" ?; s2 ~5 Y    } catch (Exception e) {2 Q$ P1 Q1 F; O; u4 c
      e.printStackTrace (System.err);6 `! Q7 v: D7 R6 F3 n: X' o
    }
8 d8 n8 }$ ~4 `: C) P    + a& D7 b; B# l8 d
    syncUpdateOrder ();6 Q/ F+ {2 J0 s/ g$ ^2 N+ ]

9 c! S4 R# C4 C8 H( x5 @    try {
6 }' V9 ?; S5 J! ^! W( d7 r. G- z0 ^      modelActions.createActionTo$message
) e# Z) o6 M6 _# Q$ U# c) ^        (heat, new Selector (heat.getClass (), "updateLattice", false));
( {5 F( v  b* m: A) s0 m* F3 h# {    } catch (Exception e) {
% A* P% ~2 C' E" Q      System.err.println("Exception updateLattice: " + e.getMessage ());' T) K2 L6 f% e
    }8 [1 V* ~& P5 p9 y- H2 I' S2 x5 P
        : x) H: }4 \( g: S9 z
    // Then we create a schedule that executes the' s$ _; @+ |- L8 [2 s$ p9 X5 O, U6 R4 b
    // modelActions. modelActions is an ActionGroup, by itself it6 r- S9 n  j2 k6 }) [" H/ {0 q, r
    // has no notion of time. In order to have it executed in" E! ^$ {! S# n0 o: M& t& A( l
    // time, we create a Schedule that says to use the2 a7 A9 `8 i6 v0 w$ H' d: G, g0 p
    // modelActions ActionGroup at particular times.  This5 g& A4 r3 ?# A0 y! x- ]
    // schedule has a repeat interval of 1, it will loop every, b; p/ H0 a4 o; L: a4 w$ s" J
    // time step.  The action is executed at time 0 relative to
$ {& J* D. b' @9 q    // the beginning of the loop.
; `1 y3 \0 W* d! ?# d4 j4 H
8 h' H; K5 R/ S8 R2 N    // This is a simple schedule, with only one action that is
, J. Y- t4 A, ]' {8 h    // just repeated every time. See jmousetrap for more
( i6 i6 q+ l6 ~1 m. j    // complicated schedules.
+ q' S; `0 h; n' ?7 F; N  ]7 ^3 Y  
3 _8 p( i8 }8 i( V3 X    modelSchedule = new ScheduleImpl (getZone (), 1);
& z% n4 ^' g/ v( V: b    modelSchedule.at$createAction (0, modelActions);
" t, |+ @( i. R" g# s+ V        5 q6 O' s- L+ C% a8 S+ h# q
    return this;; N" k$ M3 _7 u; l
  }
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, 2026-6-4 00:58 , Processed in 0.014389 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