Question

442 DEADLOCKS 1. A requests R 2. B requests S 3. C requests T 4. A requests S 5. B requests T 6. C requests R deadlock (d) 1. A requests R B C Request R Request S Request T Request S Request T Request R Release R Release S Release T Release S Release T Release R (a) (b) (c) B C R S T R S T R S T (e) (f) (g) C C R S T R S T R S T (h) 2. C requests T (B 3. A requests S 4. C requests R 5. A releases R 6. A releases S no deadlock R S T R S T R S T (k) (l) (m) (n) A) (B) (C) A B c (A) (B) (C) R S T R S T R S T (o) (p) (q) Figure 6-4. An example of how deadlock occurs and how it can be avoided.

          442
DEADLOCKS
1. A requests R
2. B requests S
3. C requests T
4. A requests S
5. B requests T
6. C requests R
deadlock
(d)
1. A requests R
B
C
Request R
Request S
Request T
Request S
Request T
Request R
Release R
Release S
Release T
Release S
Release T
Release R
(a)
(b)
(c)
B C
R S
T
R S
T
R S
T
(e)
(f)
(g)
C
C
R
S
T
R S T
R
S T
(h)
2. C requests T
(B
3. A requests S
4. C requests R
5. A releases R
6. A releases S
no deadlock
R S T
R S T
R S T
(k)
(l)
(m)
(n)
A) (B) (C)
A B
c
(A) (B) (C)
R S T
R S T
R S T
(o)
(p)
(q)
Figure 6-4. An example of how deadlock occurs and how it can be avoided.

442
DEADLOCKS
1. A requests R
2. B requests S
3. C requests T
4. A requests S
5. B requests T
6. C requests R
deadlock
(d)
1. A requests R
B
C
Request R
Request S
Request T
Request S
Request T
Request R
Release R
Release S
Release T
Release S
Release T
Release R
(a)
(b)
(c)
B C
R S
T
R S
T
R S
T
(e)
(f)
(g)
C
C
R
S
T
R S T
R
S T
(h)
2. C requests T
(B
3. A requests S
4. C requests R
5. A releases R
6. A releases S
no deadlock
R S T
R S T
R S T
(k)
(l)
(m)
(n)
A) (B) (C)
A B
c
(A) (B) (C)
R S T
R S T
R S T
(o)
(p)
(q)
Figure 6-4. An example of how deadlock occurs and how it can be avoided.

Added by Dustin S.

Question

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