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...Programming with posix threads based on multi core increasing performance through software threading by shameem akhter and jason roberts another producer consumer example threaded word counter for two files version comments progs pthread molay twordcount c mutex local counters early reporting completed purpose suppose you want to make results available the main thread as soon a worker completes its work analogous election counting where count center will announce district result this is combination of all individual from precincts wants get precinct they are standard join may not accomplish cause wait until last has inter notification problem producers in case need notify that done do signaling raising flag also deliver placing mailbox space only one so must be protected avoid overwriting before been read achieves using condition variables logic launches waits does calling cond signaled when finishes acquires checks if it empty unlocks delivers signals variable signal ctd wakes up trie...