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: 12774|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:+ Q% q5 \* R8 l  [$ q7 P! y+ A6 B
7 H  S9 g, K- n& U) A3 S, n
public Object buildActions () {
. b6 d+ `9 E( X% K$ V0 p    super.buildActions();
2 z! |+ ]6 F2 |! W7 B    ( m8 C( F, C  a7 a- N$ J! f
    // Create the list of simulation actions. We put these in
( \, V9 V* T# L$ H; T/ b' m    // an action group, because we want these actions to be. m$ ?# v+ b& }3 g8 ]
    // executed in a specific order, but these steps should
3 g9 W; ~* b- p6 ]7 V. p2 P6 d& b    // take no (simulated) time. The M(foo) means "The message
% q5 C5 n9 `1 [8 w/ Y$ Z4 F    // called <foo>". You can send a message To a particular  Q3 w6 f9 D0 F# z) w
    // object, or ForEach object in a collection.
* {( F) w7 p% E) h- _9 b        
) U; \  a% D6 F) G    // Note we update the heatspace in two phases: first run
. x- {, p! X! g2 e    // diffusion, then run "updateWorld" to actually enact the
9 R9 d. q& G, m7 n9 Y    // changes the heatbugs have made. The ordering here is8 }& @+ [; `; f6 t; F+ D) \
    // significant!. |! E$ _- `' k$ Q- ~2 ]  y
        5 `% F2 r/ s# j1 w" C6 q1 ?# D
    // Note also, that with the additional
6 g0 E  S, H. r    // `randomizeHeatbugUpdateOrder' Boolean flag we can
/ w/ g' Q5 S. Q" m    // randomize the order in which the bugs actually run
! V$ W- Q' t% S9 w; G    // their step rule.  This has the effect of removing any
2 E7 M* k. s9 S1 f8 o    // systematic bias in the iteration throught the heatbug8 e) a- X# Y- M* D$ \7 d
    // list from timestep to timestep$ x" u, i1 J- M# K
        
2 w. X$ R" C' r5 I( a! R% ~, d+ h    // By default, all `createActionForEach' modelActions have) R2 K1 r0 }  O8 {& H# R4 W2 G
    // a default order of `Sequential', which means that the# H6 L- ^9 U( X% ]& m
    // order of iteration through the `heatbugList' will be
  K2 D, r# P2 g3 ?    // identical (assuming the list order is not changed
+ v( q8 r# x) O! {- T' a" I    // indirectly by some other process).- _; p2 t3 p! L2 ^0 t
   
3 w9 A# R  }9 d+ G/ Y    modelActions = new ActionGroupImpl (getZone ());- [% x$ J4 i6 p% K
; @" R4 ^7 D. O6 p% m2 }- v4 i
    try {: x  F- Y: [- P1 g
      modelActions.createActionTo$message
8 K: q2 [' y' x) g& e# K5 v        (heat, new Selector (heat.getClass (), "stepRule", false));
' L0 h* X* A  P6 m    } catch (Exception e) {7 U! _  V* B9 O+ I, o
      System.err.println ("Exception stepRule: " + e.getMessage ());0 m+ I, D+ ]/ ]6 B+ r; x
    }+ F- T( s6 o# r( y4 U) J

: \% l& i3 P6 z    try {( |) ]$ [; v: d% Y/ Y% y% i
      Heatbug proto = (Heatbug) heatbugList.get (0);' D  |8 \: _! v  s! P3 X) }" j
      Selector sel =
) x# d" j/ P% l  b" `* R( Y( E        new Selector (proto.getClass (), "heatbugStep", false);
, {# _' v; b, T" o; O2 S$ U% l      actionForEach =
$ n' A9 H9 Z# }! A3 t) ^        modelActions.createFActionForEachHomogeneous$call' W/ R) ?/ b. \. ]" d1 @6 G, P  W9 X
        (heatbugList,
% I) a( t, G! O3 q" C         new FCallImpl (this, proto, sel,
8 M! }1 l2 I! K9 T5 h. I  l7 R5 f                        new FArgumentsImpl (this, sel)));
9 k% O- K3 @- z1 t3 x    } catch (Exception e) {( h. Z  a6 u- c
      e.printStackTrace (System.err);
2 L- K+ s0 l, y$ p5 Z  Y* M    }
+ R+ Q+ f8 h8 J8 _8 i   
+ A/ U: D8 Z. B2 U+ w( M9 {    syncUpdateOrder ();/ ~+ z+ k% v  T2 V. G1 C+ s

0 q8 w2 R+ Q4 p' D) w6 f7 ]    try {+ |$ B) e" h4 M# T
      modelActions.createActionTo$message
/ e0 L$ k4 f9 o+ Y        (heat, new Selector (heat.getClass (), "updateLattice", false));) Q9 j- N7 F% D4 X! `8 F( I" l
    } catch (Exception e) {
5 f$ m3 H; o3 z      System.err.println("Exception updateLattice: " + e.getMessage ());; N/ }* y/ b; l* r) ~+ K) Z
    }. u8 l# E' b) z& l& c& q7 }" ?* N
        * _5 Q' q' z, G  P3 a6 i/ {2 f* q
    // Then we create a schedule that executes the
. F& z/ `$ o5 J" X; `! ?    // modelActions. modelActions is an ActionGroup, by itself it
' j! B" M' R2 b    // has no notion of time. In order to have it executed in  L. B" A( k/ i' l! b
    // time, we create a Schedule that says to use the9 z* j$ Y' _2 n1 U
    // modelActions ActionGroup at particular times.  This
- h, I' h( z. F9 s. [    // schedule has a repeat interval of 1, it will loop every9 B& L7 B5 |: B4 x$ a! P0 x
    // time step.  The action is executed at time 0 relative to
+ Z% K8 u% L- C    // the beginning of the loop.
. C0 Y$ u  {" f1 A  A  W1 M. c* D% G: T2 M. ?1 {* W) I+ g2 o
    // This is a simple schedule, with only one action that is) q+ ~  N1 f4 A$ Q) o$ U' k5 J
    // just repeated every time. See jmousetrap for more+ W1 c9 y% e, y
    // complicated schedules.) s/ o2 Y: @+ |, @  K. W4 H
  6 V" l! }/ _: k4 d* p
    modelSchedule = new ScheduleImpl (getZone (), 1);0 m8 C, l7 w" V  B: [. h. T4 f* b2 {
    modelSchedule.at$createAction (0, modelActions);# m1 n6 G' E8 z- o# F- {
        9 `% N( W# Y+ z) G1 ^
    return this;
; }$ D  y, D1 D+ l1 d  }
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, 2026-9-21 21:32 , Processed in 0.013702 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