python适用的操作系统是_操作系统先来先服务python
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#coding=utf-8
import
__main__
import
string
def
fcfs
(
come_time
,
run_b_t
,
run_e_t
,
run_t
,
order
):
#
先來(lái)先服務(wù)
time_temp
=
come_time
[
0
]
for
i
in
range
(
n
):
run_b_t
[
i
]=
time_temp
run_e_t
[
i
]=
run_b_t
[
i
]+
run_t
[
i
]
time_temp
=
run_e_t
[
i
]
n_schedul
=
i
order
[
n_schedul
]=
i
+
1
return
come_time
,
run_b_t
,
run_e_t
,
run_t
,
order
def
ps
(
come_time
,
run_b_t
,
run_e_t
,
run_t
,
order
,
_prio
,
run_f
):
#
優(yōu)先級(jí)
調(diào)度
i
=
0
max_priority
=
_prio
[
i
]
j
=
1
while
j
<
n
and
come_time
[
i
]==
come_time
[
j
]:
if
_prio
[
j
]>
_prio
[
i
]:
max_priority
=
_prio
[
j
]
i
=
j
j
+=
1
#
查找第一個(gè)被調(diào)度的進(jìn)程對(duì)第一個(gè)被調(diào)度的進(jìn)程求相應(yīng)的參數(shù)
n_schedul
=
i
run_b_t
[
n_schedul
]=
come_time
[
n_schedul
]
run_e_t
[
n_schedul
]=
run_b_t
[
n_schedul
]+
run_t
[
n_schedul
]
run_f
[
n_schedul
]=
1
temp_time
=
run_e_t
[
n_schedul
]
order
[
n_schedul
]=
1
temp_n
=
1
while
temp_n
<
n
:
max_priority
=
0
for
j
in
range
(
n
):
if
come_time
[
j
]<=
temp_time
and
run_f
[
j
]==
0
:
if
_prio
[
j
]>
max_priority
:
max_priority
=
_prio
[
j
]
n_schedul
=
j
#
查找下一個(gè)被調(diào)度的進(jìn)程
創(chuàng)作挑戰(zhàn)賽新人創(chuàng)作獎(jiǎng)勵(lì)來(lái)咯，堅(jiān)持創(chuàng)作打卡瓜分現(xiàn)金大獎(jiǎng)總結(jié)
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