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?
& }) _6 }' N8 `: m下面的代码不知道能否满足你的要求。- s9 o, y3 ^3 ~* T: ^2 _
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begin model initialization function/ J& f3 q2 @! W: n$ J" J
create 1 load of L_null to P_creation! L* k/ C. J, I, _: ?9 Y! r+ Y
/*L_null is a load type of which the load create loads for the model.*/' V& L g" S! Z
6 X. K6 \/ O! j; `6 ]! j* P return true
- _( E1 I& _5 J* fend) V" g1 y# l" B1 S/ l; f
/ N, O+ W1 `3 s$ u ^3 }+ pbegin P_creation arriving procedure/ l8 g' t5 P- q9 {- B6 Y1 r4 I# O# O
while 1 = 1 begin( P ^0 w9 r) u. |) p% K2 q
wait for V_interval sec* x: u+ ]9 Y6 S3 H
/*V_interval is the interval of creation of loads, fixed or random.*/
6 |7 K' T9 m9 b+ ?, m create 1 load of L_load to oneof(V_p : P_process, 1 - V_p : die)( j; Z' j7 `" R8 P, A! A8 q# _7 D
/*V_p is the parameter of the distribution.*/( u8 M, L$ u5 Q) R8 `
end. L5 I, a7 m* c L
end
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: P* `3 T, o8 y0 B# o4 `begin P_process arriving procedure
$ s9 O; ~1 O6 n9 \3 F+ q/*Any process the load will be in.*/
8 Q1 J, R8 z' @6 K; q( y+ ? print "1 load created" to message
( h7 |) z; M, l3 D! Yend |