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: 11468|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:5 c/ v8 n- d  k! A9 s

# \& x9 C9 U9 n+ {  p public Object buildActions () {# g; P( `3 Z# U: ~
    super.buildActions();
/ x0 H! N, c1 D1 S4 H; ^   
/ e8 @- K! [# u+ _! P4 J  _/ `    // Create the list of simulation actions. We put these in
' l  v0 R2 N" J! i- V# P' e    // an action group, because we want these actions to be" x" g& Y3 ^5 q9 e' Q
    // executed in a specific order, but these steps should
  P0 q2 l8 A# ~5 [6 W    // take no (simulated) time. The M(foo) means "The message
; T, \* b( I% \2 A0 Z9 w    // called <foo>". You can send a message To a particular
" p3 _( s+ d; U% k2 E' S+ M    // object, or ForEach object in a collection.9 D5 C! ~5 ~$ U8 q
        ( n, _  P5 \# q
    // Note we update the heatspace in two phases: first run- B+ {1 h9 ]7 g
    // diffusion, then run "updateWorld" to actually enact the
! v% ~! D8 i3 {5 E4 ^, F7 x0 s    // changes the heatbugs have made. The ordering here is
1 i$ G0 V& ~5 V- v  g' ~1 c    // significant!0 c& p) E6 X0 E$ Z
        
/ P* P) C4 i  c9 O7 j, X6 L    // Note also, that with the additional
$ e2 _; u3 y- |& X7 w    // `randomizeHeatbugUpdateOrder' Boolean flag we can( [. Z& D$ U3 N2 Q2 d
    // randomize the order in which the bugs actually run
% P7 R9 H. M6 E8 a    // their step rule.  This has the effect of removing any9 }9 |" o8 @+ g7 ~
    // systematic bias in the iteration throught the heatbug
( C/ s3 U7 P# C1 G2 O0 u    // list from timestep to timestep
! t; y& E2 I3 o7 p1 y& n9 D. m        , }3 N5 l+ U/ O2 E0 i7 g
    // By default, all `createActionForEach' modelActions have8 @9 E7 Z# x+ e: s% C% E' f, y; O  }8 ]
    // a default order of `Sequential', which means that the
7 R/ y. C5 G' r    // order of iteration through the `heatbugList' will be
5 W2 b* P/ l! F& z7 W' f- ?: [1 r- S    // identical (assuming the list order is not changed5 g! T3 u- l, C/ k8 g
    // indirectly by some other process)./ \8 }  E$ ~. e; R  b
   
- X1 d; C' d9 g: @    modelActions = new ActionGroupImpl (getZone ());
0 Y. Q. q  u5 n# @3 U" Y
8 [' T# I$ [2 l+ w, w3 p/ H" s    try {8 w' v3 K8 N# d" Y2 h. }, A$ N
      modelActions.createActionTo$message
# D1 z8 D) Z9 ^* {/ G9 E. t        (heat, new Selector (heat.getClass (), "stepRule", false));
4 V3 A- C! R8 U  G- }2 |    } catch (Exception e) {
; w0 |1 T0 j: Y2 z7 B4 C: `2 G6 c      System.err.println ("Exception stepRule: " + e.getMessage ());$ t& D# q$ x* J% g
    }
6 F# w" R; {6 J0 B( a$ a/ K# G( c( v6 W6 k  D% ^$ B3 n
    try {
* a- P( t. e; Y3 P" ~9 g0 J  P      Heatbug proto = (Heatbug) heatbugList.get (0);: L# U2 V; }& }/ t' X1 I
      Selector sel =
' W5 ~. u0 E6 q8 n2 o        new Selector (proto.getClass (), "heatbugStep", false);  y/ p' t& @3 T% B
      actionForEach =) W  }4 }2 p+ s. X2 {) v( z! F& X
        modelActions.createFActionForEachHomogeneous$call
# V* M* p% [6 R. `        (heatbugList,) F4 q- C2 [+ M
         new FCallImpl (this, proto, sel,8 [- F+ G: M2 D7 q- K! g
                        new FArgumentsImpl (this, sel)));9 h( j7 p8 `' d& R
    } catch (Exception e) {- c7 D! Y' b6 @; R
      e.printStackTrace (System.err);# b/ h: C3 C- d* l
    }
' b. M* j6 q' O' w, E    : t% _4 q5 j/ c, G; _
    syncUpdateOrder ();' H$ N) t/ `; z* B

( ?  ?9 ^+ Y& ?1 w1 U6 ^9 P    try {, J0 t" x3 Y" p# t+ Q4 _% X# S; Y
      modelActions.createActionTo$message ' v5 H2 |6 v: \4 U
        (heat, new Selector (heat.getClass (), "updateLattice", false));
: Z/ C: T; j+ y    } catch (Exception e) {
) `; u2 e7 l6 e3 ]6 P& U/ k2 r      System.err.println("Exception updateLattice: " + e.getMessage ());
8 z( Z3 B: O9 h$ R    }8 ]5 _$ ?8 s! V; l$ D8 c
        
( h& N/ {( _* y    // Then we create a schedule that executes the
# P* p% i7 Q* S2 l9 w1 t4 A    // modelActions. modelActions is an ActionGroup, by itself it
2 h4 y6 }' I1 M    // has no notion of time. In order to have it executed in3 J& }. J5 D+ `8 C& U/ w) J
    // time, we create a Schedule that says to use the
2 l: [7 l2 p/ T5 A' l! C- a3 m* v    // modelActions ActionGroup at particular times.  This
, u! I( v6 `! O/ L8 E) ]0 a    // schedule has a repeat interval of 1, it will loop every
; C+ g! O: Z# @: \8 c/ r    // time step.  The action is executed at time 0 relative to
% X& ]; K. Q# m9 T    // the beginning of the loop.
; E* u' P6 k4 B" n6 p. E0 M8 _, q8 S: u$ L* n
    // This is a simple schedule, with only one action that is, h+ j  d4 b$ D* I+ A6 g
    // just repeated every time. See jmousetrap for more
7 c% b# w* q$ }. r  }- [    // complicated schedules.; \1 Q. x, s/ `" u3 ^
  6 V3 j* _9 Y# x" B1 b4 |
    modelSchedule = new ScheduleImpl (getZone (), 1);
: C" z' K: d  T% ^/ T7 I) ~0 R7 `    modelSchedule.at$createAction (0, modelActions);% N3 ^, I2 c" i' \, ?  V
        ; T0 ]: J1 c" G% U5 C% t! m, v! V/ y. ]1 T
    return this;0 i3 G" X5 K7 p% |- M' w
  }
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, 2026-7-6 07:09 , Processed in 0.014086 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