Sharedprint started
B: 3*PI is  9.42478
A: 2*PI is  6.28319
A: another 2*PI is  6.28319
A: the color was  red
A: the color now is  blue
A: the color now is  green
callprint@Shared :  green This callprint was called by   A
sendprint@Shared :  green This sendprint mesg was from   A
B: before receive semb()
B: the color was  green
callprint@Shared :  red This callprint was called by   B
sendprint@Shared :  red This sendprint mesg was from   B