symbian-qemu-0.9.1-12/python-2.6.1/Demo/threads/fcmp.py
author johnathan.white@2718R8BGH51.accenture.com
Mon, 08 Mar 2010 18:45:03 +0000
changeset 46 b6935a90ca64
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Modify framebuffer and NGA framebuffer to read screen size from board model dtb file. Optimise memory usuage of frame buffer Add example minigui application with hooks to profiler (which writes results to S:\). Modified NGA framebuffer to run its own dfc queue at high priority

# Coroutine example:  controlling multiple instances of a single function

from Coroutine import *

# fringe visits a nested list in inorder, and detaches for each non-list
# element; raises EarlyExit after the list is exhausted
def fringe(co, list):
    for x in list:
        if type(x) is type([]):
            fringe(co, x)
        else:
            co.back(x)

def printinorder(list):
    co = Coroutine()
    f = co.create(fringe, co, list)
    try:
        while 1:
            print co.tran(f),
    except EarlyExit:
        pass
    print

printinorder([1,2,3])  # 1 2 3
printinorder([[[[1,[2]]],3]]) # ditto
x = [0, 1, [2, [3]], [4,5], [[[6]]] ]
printinorder(x) # 0 1 2 3 4 5 6

# fcmp lexicographically compares the fringes of two nested lists
def fcmp(l1, l2):
    co1 = Coroutine(); f1 = co1.create(fringe, co1, l1)
    co2 = Coroutine(); f2 = co2.create(fringe, co2, l2)
    while 1:
        try:
            v1 = co1.tran(f1)
        except EarlyExit:
            try:
                v2 = co2.tran(f2)
            except EarlyExit:
                return 0
            co2.kill()
            return -1
        try:
            v2 = co2.tran(f2)
        except EarlyExit:
            co1.kill()
            return 1
        if v1 != v2:
            co1.kill(); co2.kill()
            return cmp(v1,v2)

print fcmp(range(7), x)  #  0; fringes are equal
print fcmp(range(6), x)  # -1; 1st list ends early
print fcmp(x, range(6))  #  1; 2nd list ends early
print fcmp(range(8), x)  #  1; 2nd list ends early
print fcmp(x, range(8))  # -1; 1st list ends early
print fcmp([1,[[2],8]],
           [[[1],2],8])  #  0
print fcmp([1,[[3],8]],
           [[[1],2],8])  #  1
print fcmp([1,[[2],8]],
           [[[1],2],9])  # -1

# end of example