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: 11414|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:
. X/ o- L/ c1 n2 L  B$ |+ s; s/ e" T) o% [% _/ ~
public Object buildActions () {$ r% k7 P1 O8 m/ F
    super.buildActions();
6 H- H" {7 k/ U: y, l   
1 Y' l( C; |' V; M    // Create the list of simulation actions. We put these in! X8 y) F8 w1 J; n2 ^/ N
    // an action group, because we want these actions to be
( p4 `: d& V$ c    // executed in a specific order, but these steps should: |) b- c: t! N& j
    // take no (simulated) time. The M(foo) means "The message
, N8 ~2 |- Q) s1 ~4 j    // called <foo>". You can send a message To a particular) G' ?( o8 _" @+ X
    // object, or ForEach object in a collection." n2 G8 D" S, N' g
        
8 T' z* K+ h  U" h  ^6 Q    // Note we update the heatspace in two phases: first run
1 O3 u9 d' |! N" n/ i1 p3 K4 u    // diffusion, then run "updateWorld" to actually enact the
1 Z0 ]' a. L4 Z& r    // changes the heatbugs have made. The ordering here is; }( F+ S9 f$ z* i5 r; k* Z
    // significant!9 a) z/ a$ V. W) U. L: u2 w( h
          I) l/ x" V; ]& f. u$ v. C1 z) f
    // Note also, that with the additional9 q( {8 O5 S* X  j! p
    // `randomizeHeatbugUpdateOrder' Boolean flag we can, Q( r  x- G, q
    // randomize the order in which the bugs actually run. `$ a/ G; q2 j+ r0 ~: |
    // their step rule.  This has the effect of removing any# E8 U& j1 ^: N$ N- a% a; Q
    // systematic bias in the iteration throught the heatbug
9 C/ w' U- D+ `6 ^( k7 q+ s    // list from timestep to timestep% h' W1 W+ f. ~( P& E5 q7 O. p9 c! s
        9 T3 H! o% H6 f& @1 U/ g. Q
    // By default, all `createActionForEach' modelActions have
+ x" s; H/ m) i) c% @0 Y) U    // a default order of `Sequential', which means that the
! |. J6 a6 [) z* @4 Q- J! Z    // order of iteration through the `heatbugList' will be& }- f  Z* v9 d8 z' U, M. o
    // identical (assuming the list order is not changed4 I) \& ~% N2 }- p1 r/ a" ~
    // indirectly by some other process).
% [& }3 K, o) |9 W& [( Q   
7 C5 n$ @7 E5 C" d- s# p    modelActions = new ActionGroupImpl (getZone ());) ]' a3 z( w$ P! G

5 {$ o! f+ U5 ^$ c9 u( [    try {# k/ j) s& [+ O1 W# ~
      modelActions.createActionTo$message6 ~. t& V; G9 x' K. o9 a8 h5 o0 G3 p
        (heat, new Selector (heat.getClass (), "stepRule", false));5 g, q. z1 Q/ K& t- N* M) [
    } catch (Exception e) {
2 I, f$ s8 |; }$ F      System.err.println ("Exception stepRule: " + e.getMessage ());
) e0 m2 A7 Q1 k+ `4 N; v9 G  a    }$ x+ R7 s2 f8 I! \, i; `: l
' a' p- `) L. b7 L
    try {
" @8 }& D( a2 B6 m' _5 t      Heatbug proto = (Heatbug) heatbugList.get (0);
% Q+ ~7 G7 u6 Q' v' W      Selector sel = 2 S1 p/ |" w' z0 ~9 K8 d
        new Selector (proto.getClass (), "heatbugStep", false);7 j5 N4 y. |: E- @) h+ g2 D/ ^) Q
      actionForEach =8 ^) p5 c$ G- q: B8 T
        modelActions.createFActionForEachHomogeneous$call
0 b8 {! N: a! d        (heatbugList,
+ V* [' g$ q4 i4 A1 R) A5 g         new FCallImpl (this, proto, sel,9 p3 Q7 a, z& s# _5 a1 |6 r
                        new FArgumentsImpl (this, sel)));; ?( j* |* \- p+ U( @& X' f/ u
    } catch (Exception e) {( i/ _' d% @3 R9 U, R, w: h% [& ?
      e.printStackTrace (System.err);
* X! E' Z# u8 o8 f2 ^3 k) C8 u    }9 g+ B2 }0 z# H: P
    ) N# E6 O" ?" n) \
    syncUpdateOrder ();
' l% `3 x, d6 W1 Q# Q; W3 j' I1 Z! G9 m. X
    try {
' P, C! K3 V* u0 P      modelActions.createActionTo$message ' N9 ~, ^6 p' a8 ?  b' |9 u
        (heat, new Selector (heat.getClass (), "updateLattice", false));& C1 o5 G0 S1 y# B' }" z
    } catch (Exception e) {1 Y$ L& E# x7 O# ^& s0 p: P
      System.err.println("Exception updateLattice: " + e.getMessage ());
( Q/ c/ W4 Z$ Z4 V    }3 o3 r6 Y- Z$ e8 S4 l; W& K1 m, s
        . g, `8 v3 S( ?7 q0 W2 ~! H1 |; @
    // Then we create a schedule that executes the
8 }: {8 V  W. U, C% i1 J- Z    // modelActions. modelActions is an ActionGroup, by itself it% t. y! u/ H- c' v
    // has no notion of time. In order to have it executed in; w8 w0 T, ]6 }  ^3 _9 J6 {
    // time, we create a Schedule that says to use the6 N# M, S& u6 e3 a
    // modelActions ActionGroup at particular times.  This( V) c5 b& e! s5 e
    // schedule has a repeat interval of 1, it will loop every& S# Z5 W  n$ b% C
    // time step.  The action is executed at time 0 relative to, ?* l/ X6 O5 k% n8 d1 {$ V+ I
    // the beginning of the loop.
7 t" T/ Y: U6 p, G% E  s( E* J# ^+ |& k! ]3 Y+ B
    // This is a simple schedule, with only one action that is
  h. `; e  i; I. F+ R    // just repeated every time. See jmousetrap for more8 Z1 ^8 m: t# e- j( E6 e& A; }
    // complicated schedules.' b  {$ d' T1 g' O
  
8 ^. ~* F2 D/ Y- W5 r  H# A    modelSchedule = new ScheduleImpl (getZone (), 1);
  ~& y# D: T' e6 ~- L- {  y    modelSchedule.at$createAction (0, modelActions);& B+ ~  u9 ^1 `, U7 X2 q7 ^% x
        
2 }+ \& P  r! I/ C$ s    return this;
6 w0 Z: P2 x1 _* m* s  }
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, 2026-7-2 16:17 , Processed in 0.014021 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