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: 8859|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:
. M3 C8 q. W# h, U1 c
& Z6 ^: `) k$ k/ m public Object buildActions () {
$ {  v" n8 Q$ t. @    super.buildActions();- ]% a% u0 Z8 i0 E" N
   
1 ~  a" j; v  D! A2 m$ I5 p    // Create the list of simulation actions. We put these in# H: j5 b  y) S+ v. h6 ^+ Y
    // an action group, because we want these actions to be" F6 A1 g- X; p' p" z
    // executed in a specific order, but these steps should& Z! }$ V6 q3 o" ]/ W3 W! m5 Y
    // take no (simulated) time. The M(foo) means "The message& d+ j- T, u" @/ T3 W
    // called <foo>". You can send a message To a particular
0 ?3 y# N5 E  t' Z* A+ A1 y    // object, or ForEach object in a collection.; P' i3 w) H5 W! ?0 V& Z$ C4 y7 z
        
/ @6 h$ H4 O" ?) H( N: F! H2 |5 i    // Note we update the heatspace in two phases: first run
( B& `* u% e( p0 u! S, F- @0 M' H    // diffusion, then run "updateWorld" to actually enact the
& C0 j. v/ L1 \$ i4 D. N, T    // changes the heatbugs have made. The ordering here is
+ P2 I5 O1 h$ y% W7 ?    // significant!
4 k: ]% J, J% O8 D7 `        
3 a% _5 V7 l+ e# |$ y+ x* d    // Note also, that with the additional
2 s/ g6 A/ S4 J, |$ V# o8 w    // `randomizeHeatbugUpdateOrder' Boolean flag we can9 @9 g: h# S$ r( y
    // randomize the order in which the bugs actually run
: d% d! J+ k: _% K! ~# J2 M* c    // their step rule.  This has the effect of removing any* G9 q/ [  P! n' E  B+ F5 |
    // systematic bias in the iteration throught the heatbug( _3 R2 c5 G) r0 r6 ^/ j3 _7 L
    // list from timestep to timestep' S7 y' ]0 f0 u0 s6 a
        % m7 R5 m' L5 w2 A4 D# i$ u7 }* s
    // By default, all `createActionForEach' modelActions have8 s2 U( D' ~- r- h6 H
    // a default order of `Sequential', which means that the6 E" R# `: a5 B3 O# I2 \
    // order of iteration through the `heatbugList' will be$ z" R4 F) b$ \) O! S
    // identical (assuming the list order is not changed
) s; \/ \5 S& O( N' u1 V    // indirectly by some other process).; Y) R; J0 z" w- F0 L) b6 W
    2 m$ S2 y9 H% |4 @. b! z8 X: P
    modelActions = new ActionGroupImpl (getZone ());
8 K* l: B" o$ ~+ P0 f/ C" t1 H  P5 o+ @0 s% X
    try {
! a* a: b/ m' P0 T6 D0 g      modelActions.createActionTo$message
& _- X, P2 E* O8 }        (heat, new Selector (heat.getClass (), "stepRule", false));
  C. F+ t4 w! @/ u- m* `% c    } catch (Exception e) {
! B7 ]& q$ |8 n% @" N5 g& r, n$ v      System.err.println ("Exception stepRule: " + e.getMessage ());
+ J6 D8 K9 L; N& S    }
8 H1 x- A' Z" d8 y8 s9 t
6 j$ s; s* b" U; z* v    try {' w6 a2 D) @$ ?4 p0 G
      Heatbug proto = (Heatbug) heatbugList.get (0);
- k& G+ U7 Q8 A7 I; f# y      Selector sel =
+ f" z6 B+ g) f. P% P& a; k& t& t        new Selector (proto.getClass (), "heatbugStep", false);
9 K. v% s! e" |      actionForEach =
+ p6 R7 o. z/ f4 U        modelActions.createFActionForEachHomogeneous$call
2 F1 c; u3 R" A4 {% E0 ~# K        (heatbugList,
( H6 k3 R' F; Z; O, N6 v% x, p+ D0 C, _         new FCallImpl (this, proto, sel,0 v- ]8 _, X+ S/ \
                        new FArgumentsImpl (this, sel)));& p3 ]0 ?0 k& e) ~: N. G( X% I
    } catch (Exception e) {$ B; ]$ d; a& z  N& [  R
      e.printStackTrace (System.err);
! N9 e" E9 I5 k  B) h, @    }6 h- Z# R  Y; f
   
7 B% n6 l+ {5 G3 W    syncUpdateOrder ();
* {: a- c# Q. U0 d
# B. ?4 ]/ S2 L* T- {/ B8 r    try {
2 s4 @( V# b2 o1 l2 Y      modelActions.createActionTo$message 2 B: v% J$ b. M# ]8 V
        (heat, new Selector (heat.getClass (), "updateLattice", false));7 r( ?  d- P, f' v
    } catch (Exception e) {
+ u# U& w% ~4 j3 Y      System.err.println("Exception updateLattice: " + e.getMessage ());/ v. ^& r4 s6 N+ |
    }
/ E% n' _7 d' e8 Y8 D4 c' _        ; F6 n  ?0 D2 H5 i
    // Then we create a schedule that executes the
# _2 U5 J: Y( z( @) K3 W    // modelActions. modelActions is an ActionGroup, by itself it
& C  ]2 c* n0 H- Y# R    // has no notion of time. In order to have it executed in' M+ x2 k; G( r4 b4 j- Y
    // time, we create a Schedule that says to use the
! C6 ~. s6 m; L9 F9 r) U, D    // modelActions ActionGroup at particular times.  This
6 ^# @3 F, i: `" b- B8 G3 m    // schedule has a repeat interval of 1, it will loop every; ^$ y% h% A4 b; a$ U4 W
    // time step.  The action is executed at time 0 relative to
! X" l/ c6 ?# t1 O2 G    // the beginning of the loop.) `! J' }0 V* l0 Y7 J

3 A& V- M: J1 f( P8 }% V/ F2 l    // This is a simple schedule, with only one action that is  ]# {9 Y$ g- \# _/ D
    // just repeated every time. See jmousetrap for more
6 g7 s# `) B% j- ~    // complicated schedules.
2 _5 i  z7 v/ q" [, e  [9 m  
9 L. x  ]* I1 z' J! C  J  d    modelSchedule = new ScheduleImpl (getZone (), 1);
* m5 [9 ^, l+ C: u4 _2 l* L  w1 _    modelSchedule.at$createAction (0, modelActions);( s: [: `6 r  l, k
        
2 J( u1 ~6 k4 ?( k' y; {# r    return this;
+ [/ H& F* p/ [: I; W2 e, D, 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, 2026-1-30 14:02 , Processed in 0.015926 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