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Kirill Smelkov
cpython
Commits
68a323c5
Commit
68a323c5
authored
Jul 18, 2004
by
Tim Peters
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Plain Diff
Whitespace normalization. Had to break guido's lock on rev 1.1 to do
this, but I'm sure it wasn't locked intentionally.
parent
07e5dc88
Changes
1
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71 additions
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71 deletions
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-71
Demo/threads/Generator.py
Demo/threads/Generator.py
+71
-71
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Demo/threads/Generator.py
View file @
68a323c5
...
@@ -5,80 +5,80 @@ import thread
...
@@ -5,80 +5,80 @@ import thread
Killed
=
'Generator.Killed'
Killed
=
'Generator.Killed'
class
Generator
:
class
Generator
:
# Constructor
# Constructor
def
__init__
(
self
,
func
,
args
):
def
__init__
(
self
,
func
,
args
):
self
.
getlock
=
thread
.
allocate_lock
()
self
.
getlock
=
thread
.
allocate_lock
()
self
.
putlock
=
thread
.
allocate_lock
()
self
.
putlock
=
thread
.
allocate_lock
()
self
.
getlock
.
acquire
()
self
.
getlock
.
acquire
()
self
.
putlock
.
acquire
()
self
.
putlock
.
acquire
()
self
.
func
=
func
self
.
func
=
func
self
.
args
=
args
self
.
args
=
args
self
.
done
=
0
self
.
done
=
0
self
.
killed
=
0
self
.
killed
=
0
thread
.
start_new_thread
(
self
.
_start
,
())
thread
.
start_new_thread
(
self
.
_start
,
())
# Internal routine
# Internal routine
def
_start
(
self
):
def
_start
(
self
):
try
:
try
:
self
.
putlock
.
acquire
()
self
.
putlock
.
acquire
()
if
not
self
.
killed
:
if
not
self
.
killed
:
try
:
try
:
apply
(
self
.
func
,
(
self
,)
+
self
.
args
)
apply
(
self
.
func
,
(
self
,)
+
self
.
args
)
except
Killed
:
except
Killed
:
pass
pass
finally
:
finally
:
if
not
self
.
killed
:
if
not
self
.
killed
:
self
.
done
=
1
self
.
done
=
1
self
.
getlock
.
release
()
self
.
getlock
.
release
()
# Called by producer for each value; raise Killed if no more needed
# Called by producer for each value; raise Killed if no more needed
def
put
(
self
,
value
):
def
put
(
self
,
value
):
if
self
.
killed
:
if
self
.
killed
:
raise
TypeError
,
'put() called on killed generator'
raise
TypeError
,
'put() called on killed generator'
self
.
value
=
value
self
.
value
=
value
self
.
getlock
.
release
()
# Resume consumer thread
self
.
getlock
.
release
()
# Resume consumer thread
self
.
putlock
.
acquire
()
# Wait for next get() call
self
.
putlock
.
acquire
()
# Wait for next get() call
if
self
.
killed
:
if
self
.
killed
:
raise
Killed
raise
Killed
# Called by producer to get next value; raise EOFError if no more
# Called by producer to get next value; raise EOFError if no more
def
get
(
self
):
def
get
(
self
):
if
self
.
killed
:
if
self
.
killed
:
raise
TypeError
,
'get() called on killed generator'
raise
TypeError
,
'get() called on killed generator'
self
.
putlock
.
release
()
# Resume producer thread
self
.
putlock
.
release
()
# Resume producer thread
self
.
getlock
.
acquire
()
# Wait for value to appear
self
.
getlock
.
acquire
()
# Wait for value to appear
if
self
.
done
:
if
self
.
done
:
raise
EOFError
# Say there are no more values
raise
EOFError
# Say there are no more values
return
self
.
value
return
self
.
value
# Called by consumer if no more values wanted
# Called by consumer if no more values wanted
def
kill
(
self
):
def
kill
(
self
):
if
self
.
killed
:
if
self
.
killed
:
raise
TypeError
,
'kill() called on killed generator'
raise
TypeError
,
'kill() called on killed generator'
self
.
killed
=
1
self
.
killed
=
1
self
.
putlock
.
release
()
self
.
putlock
.
release
()
# Clone constructor
# Clone constructor
def
clone
(
self
):
def
clone
(
self
):
return
Generator
(
self
.
func
,
self
.
args
)
return
Generator
(
self
.
func
,
self
.
args
)
def
pi
(
g
):
def
pi
(
g
):
k
,
a
,
b
,
a1
,
b1
=
2L
,
4L
,
1L
,
12L
,
4L
k
,
a
,
b
,
a1
,
b1
=
2L
,
4L
,
1L
,
12L
,
4L
while
1
:
while
1
:
# Next approximation
# Next approximation
p
,
q
,
k
=
k
*
k
,
2L
*
k
+
1L
,
k
+
1L
p
,
q
,
k
=
k
*
k
,
2L
*
k
+
1L
,
k
+
1L
a
,
b
,
a1
,
b1
=
a1
,
b1
,
p
*
a
+
q
*
a1
,
p
*
b
+
q
*
b1
a
,
b
,
a1
,
b1
=
a1
,
b1
,
p
*
a
+
q
*
a1
,
p
*
b
+
q
*
b1
# Print common digits
# Print common digits
d
,
d1
=
a
/
b
,
a1
/
b1
d
,
d1
=
a
/
b
,
a1
/
b1
while
d
==
d1
:
while
d
==
d1
:
g
.
put
(
int
(
d
))
g
.
put
(
int
(
d
))
a
,
a1
=
10L
*
(
a
%
b
),
10L
*
(
a1
%
b1
)
a
,
a1
=
10L
*
(
a
%
b
),
10L
*
(
a1
%
b1
)
d
,
d1
=
a
/
b
,
a1
/
b1
d
,
d1
=
a
/
b
,
a1
/
b1
def
test
():
def
test
():
g
=
Generator
(
pi
,
())
g
=
Generator
(
pi
,
())
g
.
kill
()
g
.
kill
()
g
=
Generator
(
pi
,
())
g
=
Generator
(
pi
,
())
for
i
in
range
(
10
):
print
g
.
get
(),
for
i
in
range
(
10
):
print
g
.
get
(),
print
print
h
=
g
.
clone
()
h
=
g
.
clone
()
g
.
kill
()
g
.
kill
()
while
1
:
while
1
:
print
h
.
get
(),
print
h
.
get
(),
test
()
test
()
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