什么叫“到达为伯努力过程”?是不是说,隔一段时间出现一个机会,产生或不产生load?/ J3 v& A+ x5 ]# S6 u" b
下面的代码不知道能否满足你的要求。2 v, ?* K6 D6 ?. o n/ d9 k- V2 d
8 \: x' \8 M8 @/ ^
begin model initialization function! h0 k# ^2 t3 O! U
create 1 load of L_null to P_creation
+ W4 z1 v* b! `) @ J3 t; V/*L_null is a load type of which the load create loads for the model.*/5 J; b2 \* o3 Y2 I1 J }- E9 Q% O
: o$ `: Z) b& c- e* y3 }6 ?6 d return true
* O7 R6 ]; {8 R5 aend
0 O# C6 D) t9 s0 I& i1 b4 e- ^, D5 c5 f; T1 K- E- Y
begin P_creation arriving procedure+ s1 E' b/ Z% A
while 1 = 1 begin
' b, D% C/ ?" }4 B" u( [& Z# j wait for V_interval sec) m3 E+ X7 I% g( f% K' W
/*V_interval is the interval of creation of loads, fixed or random.*/
) g9 n5 F, \8 Y create 1 load of L_load to oneof(V_p : P_process, 1 - V_p : die), L* L) \$ U; O6 y; @* x. K/ Q8 x
/*V_p is the parameter of the distribution.*/' ]6 g: r& G" L7 a0 {
end
! T1 S0 d: r) @9 G; uend
, l1 N1 O+ C: o1 W; G, _' u, b* K% O2 c4 p
begin P_process arriving procedure
0 U1 ?/ Z: }5 c+ c, A7 `/*Any process the load will be in.*/2 s' U7 Z8 x7 z- N. M3 D4 w
print "1 load created" to message
0 V5 i/ n: V. p+ b$ jend |