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Mutex

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Mutex. Kevin O'Gorman. CS 170. 22 April 2002. Mutex. A1 statement. A2 mutex.wait() A3 wolski.balance = wolski balance - 200. A4 mutex.signal() A5 statement ... – PowerPoint PPT presentation

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Title: Mutex

1
Mutex

Kevin OGorman
CS 170
22 April 2002

2
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 1000
mutex 1
3
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 1000
mutex 1
4
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 1000
mutex 0
5
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 800
mutex 0
6
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 800
mutex 0
7
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 800
mutex -1
8
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 800
mutex -1
9
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 800
mutex 0
10
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 800
mutex 0
11
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 800
mutex 0
12
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 600
mutex 0
13
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 600
mutex 1
14
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 600
mutex 1
15
Mutex
A1 statement A2 mutex.wait() A3
wolski.balance wolski balance -
200 A4 mutex.signal() A5 statement
B1 statement B2 mutex.wait() B3
wolski.balance wolski balance -
200 B4 mutex.signal() B5 statement
balance 600
Success!!
16
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