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: 10603|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:
1 U" M+ I' E1 ~" e# t* e" n+ P
! B6 B, @. S( P& F public Object buildActions () {. C$ |: Z! y" M6 c6 s
    super.buildActions();
* b2 g6 t2 L* `4 o4 p    # G) W2 g  N0 X- `" G; L
    // Create the list of simulation actions. We put these in
' v6 k; O" T6 Z) d& i    // an action group, because we want these actions to be
/ k' c4 e- U& ]* N    // executed in a specific order, but these steps should' i2 [% P  ^' r1 m$ ~0 g
    // take no (simulated) time. The M(foo) means "The message
" s' v2 ]& ]) ]+ d. S# p- w    // called <foo>". You can send a message To a particular1 M- V! _# D* t! H- J
    // object, or ForEach object in a collection.
( P# V$ i+ r& _$ U! e$ P" P+ P        8 x: {. `, M$ b. \# a' k( w+ h
    // Note we update the heatspace in two phases: first run2 a; k9 L7 E& w
    // diffusion, then run "updateWorld" to actually enact the
7 I7 w7 [% R7 l8 |' ?, Y    // changes the heatbugs have made. The ordering here is
2 ~" q5 c4 a: {9 W& f" r0 [    // significant!( _9 H- H# o3 Q& U. Z, J6 H% i3 g( V
        
7 a- m, u% w6 [    // Note also, that with the additional6 Q: N. y# B; ]$ {+ _- Y
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
$ Q' N! `/ u9 q+ b. V& ]' a) u    // randomize the order in which the bugs actually run
8 }% m, X7 Z( d8 ?/ y; S5 _    // their step rule.  This has the effect of removing any
1 a. @7 `) P# j    // systematic bias in the iteration throught the heatbug) Z. i- e( ]% e( D
    // list from timestep to timestep' k6 Y' I( S* Z/ M+ n
        0 P: b5 i) E# y
    // By default, all `createActionForEach' modelActions have$ @0 q, Q- U0 D/ @  ]
    // a default order of `Sequential', which means that the: C. \6 B8 e5 t2 b6 L" E2 ^
    // order of iteration through the `heatbugList' will be, |) L1 ^) T/ q1 z
    // identical (assuming the list order is not changed
* \. }! k( ~6 T    // indirectly by some other process).  n: B# T0 F. L7 O" K2 @
    ; l% e( k5 Y0 [0 A, M
    modelActions = new ActionGroupImpl (getZone ());/ I& m8 Q" f* o, ?8 Z9 q+ Q" I, L
' w% m& V! u9 ^" ^& m6 Q
    try {
+ K3 ?0 s, ], |      modelActions.createActionTo$message
* x3 {* o+ _, E5 R" t0 q        (heat, new Selector (heat.getClass (), "stepRule", false));
7 i5 ]6 `6 z/ u- q% H& F    } catch (Exception e) {; V9 U& p, c, q" Y3 ^! {3 z1 t
      System.err.println ("Exception stepRule: " + e.getMessage ());
' K) C: l( F& ^    }
* R# x3 k9 A3 v* {; k8 Y2 F0 I- J9 b% c
    try {! ?# E$ x$ r& Q* k' x
      Heatbug proto = (Heatbug) heatbugList.get (0);: v0 r) ]" K& Y
      Selector sel = * S/ T- [+ o2 M' U
        new Selector (proto.getClass (), "heatbugStep", false);2 J( [9 U" S" Z3 w
      actionForEach =* _9 s; W) L& Q" R0 p3 U+ u+ A
        modelActions.createFActionForEachHomogeneous$call
6 \0 I. E4 ]# ?        (heatbugList,. L; _! R/ a& t+ H; K+ R
         new FCallImpl (this, proto, sel,3 @" E% H: p- v% t
                        new FArgumentsImpl (this, sel)));2 y) d) X& o5 A. z/ R% z+ _7 _
    } catch (Exception e) {
% q6 Z6 r2 @1 n0 j      e.printStackTrace (System.err);
5 w6 P/ z+ F4 ?; t' S5 S: H    }5 G# s6 }/ g+ L: e% h6 D
   
6 k  S* y+ Z, }9 S+ e! j    syncUpdateOrder ();& `9 @5 k9 Z4 F0 \! m( V+ ~
- q% A4 n4 ]0 `8 f
    try {
# u' w7 W) M+ `. Q8 {  H8 T, D      modelActions.createActionTo$message
) k- @0 M# y# P9 O9 X        (heat, new Selector (heat.getClass (), "updateLattice", false));
& \( r' s1 M/ G" Z& @    } catch (Exception e) {
: ^6 o* X3 a  S9 a! k      System.err.println("Exception updateLattice: " + e.getMessage ());; J/ \' s+ O) |7 i1 s
    }
' `4 X* K& K8 A! T$ t% v        
$ m$ r$ y- g& s& O6 O/ v1 J) y    // Then we create a schedule that executes the6 E* q" `' l6 K$ \0 y& N9 [) x
    // modelActions. modelActions is an ActionGroup, by itself it
1 J+ S) r' H* \$ U& ^- g6 t  C    // has no notion of time. In order to have it executed in  L1 ^! O$ g3 f
    // time, we create a Schedule that says to use the9 ?1 [! C& B. J7 [0 E! N$ R2 `* a' S/ H
    // modelActions ActionGroup at particular times.  This
, H, Q: ]6 b9 |, G# J. Z    // schedule has a repeat interval of 1, it will loop every
" m4 Z" H. g& _1 c( Q    // time step.  The action is executed at time 0 relative to/ W* ]4 l1 u  H( ?# u7 z, K7 Z- z, o
    // the beginning of the loop.
, z1 N2 x, J: Y0 a4 M& R# J  K! n. J) B2 }3 C6 Q5 c; o
    // This is a simple schedule, with only one action that is
9 E6 W/ N. v7 W" A1 @    // just repeated every time. See jmousetrap for more
. q: ]  n0 s8 U! ?/ s! T    // complicated schedules.( P5 z) ~, n1 k1 L0 y
  9 V' B; D4 i4 C
    modelSchedule = new ScheduleImpl (getZone (), 1);8 A# M( `) G- a$ R- O# T) N
    modelSchedule.at$createAction (0, modelActions);
/ I6 l' b) N8 o/ D        
. M* T5 b0 h# f3 y    return this;
. ~' v9 S9 g$ w! 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, 2026-5-8 14:07 , Processed in 0.014399 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