ProducerConsumer Semaphore mutex 1 Semaphore full 0 Semaphore

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Механизмы синхронизации Проблема Producer-Consumer. Семафоры Semaphore mut_ex = 1; Semaphore full = 0; Semaphore

Механизмы синхронизации Проблема Producer-Consumer. Семафоры Semaphore mut_ex = 1; Semaphore full = 0; Semaphore empty = N; Producer: while (1) { produce_item(); P(empty); P(mut_ex); put_item(); V(mut_ex); V(full); } Consumer: while (1) { P(full); P(mut_ex); get_item(); V(mut_ex); V(empty); consume_item(); }

Механизмы синхронизации Producer-Consumer. Семафоры Дейкстры Semaphore mut_ex = 0; 1; Semaphore full = 0;

Механизмы синхронизации Producer-Consumer. Семафоры Дейкстры Semaphore mut_ex = 0; 1; Semaphore full = 0; Semaphore empty = N; N - 1; Producer: while (1) { produce_item(); P(empty); P(mut_ex); put_item(); V(mut_ex); V(full); } Consumer: while (1) { P(mut_ex); P(full); get_item(); V(mut_ex); V(empty); consume_item(); }

Механизмы синхронизации Producer-Consumer. Мониторы Хора Monitor PC { Condition full, empty; int count; void

Механизмы синхронизации Producer-Consumer. Мониторы Хора Monitor PC { Condition full, empty; int count; void put () { if (count == N) full. wait; put_item(); count++; if (count == 1) empty. signal; } void get () { if (count == 0) empty. wait; get_item(); count--; if (count == N-1) full. signal; } { count = 0; } } Producer: while (1) { produce_item(); PC. put (); } Consumer: while (1) { PC. get (); consume_item(); }

Механизмы синхронизации Producer-Consumer. Очереди сообщений Producer: while (1) { } Consumer: while (1) {

Механизмы синхронизации Producer-Consumer. Очереди сообщений Producer: while (1) { } Consumer: while (1) { produce_item(); receive (address, item); send (address, item) consume_item() }

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