Can the flockfile and funlockfile functions introduced in Section 12.5 be used to solve the race found in the program from Figure8.12? Explain.

What will be an ideal response?

No, they can’t help with this race, because they can only be used to synchronize threads within a single address space. In Figure8.12, the two racing contexts areprocesses, not threads, and each process has its own address space, even though the child starts out as a copy of the parent. This means that when the child’s stream is locked, it doesn’t affect the parent’s copy of the stream.