def Sort(IN, MAX, OUT):
"""
Sort a stream of Packets to an output stream
"""
max = MAX.receive_once(9999) - 1
array = []
for i, p in enumerate(IN.iter_packets()):
if i == max:
break
array.append(p)
# this is designed to stream results during the sort operation, which is
# theoretically "better" than sorting everything up front with the sort()
# function, though in practice it's likely that sort() is faster in most
# cases by virtue of being implemented in C.
j = 0
k = len(array)
n = k # no. of packets to be sent out
while n > 0:
curr_min = None
for i in range(k):
if array[i] is not None:
s = array[i].get_contents()
if curr_min is None or s < curr_min: # was `cmp(s, t) < 0`
j = i
curr_min = s
# if (array[j] is None) break
OUT.send(array[j])
array[j] = None
n -= 1
def GenerateTestData(COUNT, OUT):
""""Generates stream of packets under control of a counter"""
count = COUNT.receive_once()
if count is None:
return
for i in range(count, 0, -1):
s = "%06d" % i
if not OUT.send(s):
break
def GenerateTestDataDumb(COUNT, OUT):
""""Generates stream of packets under control of a counter
Fails to break if OUT is closed
"""
count = COUNT.receive_once()
if count is None:
return
for i in range(count, 0, -1):
s = "%06d" % i
OUT.send(s)
def GenerateOptionalFixedArray(COUNT, OUT):
""""Generates stream of packets under control of a counter"""
count = COUNT.receive_once()
if count is None:
return
for outport in OUT:
logger.info("writing to port %s" % outport)
for i in range(count, 0, -1):
s = "%06d" % i
if outport.is_closed():
break
outport.send(s)
def GenerateFixedSizeArray(COUNT, OUT):
""""Generates stream of packets under control of a counter"""
count = COUNT.receive_once()
if count is None:
return
for outport in OUT:
for i in range(count, 0, -1):
s = "%06d" % i
if OUT.is_closed():
break
# if (out_port_array[k].is_connected()):
outport.send(s)
def GenSS(COUNT, OUT):
"""Generates stream of 5-packet substreams under control of a counter
"""
count = COUNT.receive_once()
OUT.send(Packet.Type.OPEN)
for i in range(count):
s = "%06d" % (count - i)
OUT.send(s)
if i < count - 1: # prevent empty bracket pair at end
if i % 5 == 5 - 1:
OUT.send(Packet.Type.CLOSE)
OUT.send(Packet.Type.OPEN)
OUT.send(Packet.Type.CLOSE)
def GenerateRandom(COUNT, OUT):
"""Generate a stream of random numbers"""
count = COUNT.receive_once()
for i in range(count):
OUT.send(random())