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: 10875|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 ^6 j+ v. x& Q- x

: w8 i6 q/ i9 s, ?2 c public Object buildActions () {  a! |, X$ `+ R( p7 D8 n6 F6 a" X
    super.buildActions();
/ d7 n4 H) N9 Y% [: l: h) ~    3 U: K$ c% @+ ?* {9 I
    // Create the list of simulation actions. We put these in
7 A* X% h% i, ?7 R; r; P    // an action group, because we want these actions to be" x) s8 F/ l  X# d( e& S2 b
    // executed in a specific order, but these steps should6 a7 e. V2 Q6 }2 h0 Z9 l
    // take no (simulated) time. The M(foo) means "The message1 T- N! Y( C4 G# b) j
    // called <foo>". You can send a message To a particular: J/ Z9 A! J' o: k+ Z6 `0 X) b
    // object, or ForEach object in a collection.) O6 x  f6 w1 a; H( D; V
        
4 P3 \$ ~; F( Y) O+ R0 e% m    // Note we update the heatspace in two phases: first run
+ X. t% z. w7 Z9 v5 S    // diffusion, then run "updateWorld" to actually enact the: B3 ?% f9 m9 I- y/ \+ m$ @% g, R
    // changes the heatbugs have made. The ordering here is
' d( ?6 M  K7 J! g$ a- P- l1 A7 C    // significant!' E$ A1 Z3 w0 {
        
' U& \, ?/ b+ U+ P    // Note also, that with the additional) @/ ?. M+ N) A9 j! }0 B
    // `randomizeHeatbugUpdateOrder' Boolean flag we can( k* I5 @  l. a$ n" g( h
    // randomize the order in which the bugs actually run9 N2 }2 |6 f3 ~: f. |  c
    // their step rule.  This has the effect of removing any0 x' x1 Q/ F" ~: ~7 \5 Z
    // systematic bias in the iteration throught the heatbug$ `7 o& J' M1 B# c" l5 B5 r% ]0 k! J
    // list from timestep to timestep
# A$ p' R# |1 X  c7 G$ p; \1 @. y        0 u  ^3 F) ~( A' Y
    // By default, all `createActionForEach' modelActions have6 r# q0 p3 t) r* W0 q- y4 J
    // a default order of `Sequential', which means that the$ f0 O$ p. Q( D4 a: n5 [) q
    // order of iteration through the `heatbugList' will be
# [, u0 d0 p' M& l- }% F    // identical (assuming the list order is not changed$ b. u) G! @& {4 c6 d3 _
    // indirectly by some other process).9 P  C% o8 T: o
   
2 ^5 d1 O% U1 n  Y) B    modelActions = new ActionGroupImpl (getZone ());
' d0 k2 r5 K) X
; Y4 l7 t+ Q. V( Y- k    try {
7 P# [7 P. u9 p/ u: }      modelActions.createActionTo$message
6 x- P1 n) B; Q7 e! ]6 _        (heat, new Selector (heat.getClass (), "stepRule", false));7 p& O5 K+ o4 d
    } catch (Exception e) {2 G8 r, m7 _/ J# r( ^6 h2 ?
      System.err.println ("Exception stepRule: " + e.getMessage ());! W2 l) u8 n/ ^( p* k1 T3 r$ p$ k
    }
5 `/ \( O8 h0 r
9 n9 ^2 s7 R+ f$ G    try {
2 Y1 Y% v" G( j6 G7 y      Heatbug proto = (Heatbug) heatbugList.get (0);
! t4 _% r4 G7 Y      Selector sel = / g6 u9 e$ L: a+ p/ |# a/ x5 V
        new Selector (proto.getClass (), "heatbugStep", false);4 y8 K- @$ {5 L7 }' [* l4 }
      actionForEach =
  {" n0 L$ `2 }. X        modelActions.createFActionForEachHomogeneous$call3 Q  A! Y1 U, ?4 `+ z( L" g1 I5 g
        (heatbugList,
! v/ j" x5 b* ~5 \$ S         new FCallImpl (this, proto, sel,
  ]" P( E7 |: s; |/ h# w                        new FArgumentsImpl (this, sel)));
- S) w, e/ `7 j6 s    } catch (Exception e) {
8 f+ D$ F& Q( r      e.printStackTrace (System.err);
/ Z7 ]! L, Q! k1 o/ `5 C    }
8 M8 z3 b4 R+ T# C( X   
6 @+ O7 ^! w4 g( E* \  y# J# c5 p    syncUpdateOrder ();
# [. Z, F3 F- ^$ m9 v$ J
6 M+ b! i% p8 [$ Q    try {
; j( D3 K3 U: P0 j: t      modelActions.createActionTo$message : m' m  H8 \9 z* d, R# |
        (heat, new Selector (heat.getClass (), "updateLattice", false));3 n+ t  A, V; }+ ^& M
    } catch (Exception e) {
. _7 q* R0 x' j& f      System.err.println("Exception updateLattice: " + e.getMessage ());, D7 E# y" h! @  [  `% K
    }0 A& b0 @) n5 @
        
- T$ P6 s3 }' w  @9 Q4 ]    // Then we create a schedule that executes the
4 Q" u/ [: }% s    // modelActions. modelActions is an ActionGroup, by itself it
8 e& W: }" S( E: J' g    // has no notion of time. In order to have it executed in
- e: m& y; c( E) F    // time, we create a Schedule that says to use the
1 w+ i6 g: M# E  l  B    // modelActions ActionGroup at particular times.  This
9 H/ G6 C! e0 p" T* n/ |) O2 Q! ?2 M7 U    // schedule has a repeat interval of 1, it will loop every5 F, B5 n. [+ G  p/ F; V
    // time step.  The action is executed at time 0 relative to$ P1 D6 p5 i* u1 c
    // the beginning of the loop.$ X4 U' N$ N" Z" N9 i! l

5 e* A$ D: B- R( @6 H( Q6 n) @    // This is a simple schedule, with only one action that is' Y7 e7 |8 @8 o" d6 H  A/ I8 T
    // just repeated every time. See jmousetrap for more# Z8 m9 i* h8 N* G* l
    // complicated schedules.
! T5 d  c$ Q- }+ c* s# e1 r2 E  - F) {5 S$ S9 A9 }8 t- B- J- k
    modelSchedule = new ScheduleImpl (getZone (), 1);/ y) `' b$ c% A  d0 i# V
    modelSchedule.at$createAction (0, modelActions);0 d7 r# f8 e  w0 j
        
6 k6 d' [- g; @; \2 A, [8 N0 J    return this;6 ?8 }" z7 @3 |) B" }9 B4 l" u
  }
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, 2026-5-25 07:46 , Processed in 0.013792 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