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?( {( m7 C5 _6 o: g* ^
下面的代码不知道能否满足你的要求。; L7 v$ c, r W, W' O+ O
5 ]2 k R p* m$ E/ _$ ]) ubegin model initialization function
1 c) L" P; z/ }) U6 Q1 |2 N8 N, k create 1 load of L_null to P_creation
5 F* [9 q1 S4 q9 C/*L_null is a load type of which the load create loads for the model.*/* i/ v |- b3 F+ ~$ t) z
2 e1 G9 z; N4 b5 O7 R4 Y return true
" |6 C5 }5 X! a% }end5 l$ x$ |, [" c" H! b
4 v6 ?, k+ f5 L% U. [6 w3 Ybegin P_creation arriving procedure
4 W/ |# t% Q2 Y, t while 1 = 1 begin( Y, B g5 E% _# h
wait for V_interval sec8 O( i2 Q4 ~8 H. ~0 j
/*V_interval is the interval of creation of loads, fixed or random.*/
7 L/ U0 u; H8 ~# k6 v create 1 load of L_load to oneof(V_p : P_process, 1 - V_p : die)
/ P3 r6 f+ k0 A- R/*V_p is the parameter of the distribution.*/. l6 ~4 W" a) n) Q/ D5 X1 ?" Q. p6 u
end
6 f$ O1 u- C4 r$ E6 g# Hend- y. [( u( w4 ~# ~1 B8 h
: a' Q$ Q6 [0 `8 w( T4 ]+ j0 J/ i7 }" [3 jbegin P_process arriving procedure Z' r* t, j- y, U% q, |/ f
/*Any process the load will be in.*/( }# h+ R3 G% M+ f" F; f0 |8 D# X
print "1 load created" to message4 |6 ~6 e. v! J/ [+ ^ h* G3 r% W2 L
end |