Mercurial > hg > Papers > 2020 > soto-midterm

comparison src/putSynchronizedQueue.cbc @ 1:73127e0ab57c

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author soto@cr.ie.u-ryukyu.ac.jp
date Tue, 08 Sep 2020 18:38:08 +0900
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0:b919985837a3 1:73127e0ab57c
1 __code putSynchronizedQueue(struct SynchronizedQueue* queue, union Data* data, __code next(...)) {
2 Element* element = new Element();
3 element->data = data;
4 element->next = NULL;
5 Element* last = queue->last;
6 Element* nextElement = last->next;
7 if (last != queue->last) {
8 goto putSynchronizedQueue();
9 }
10 if (nextElement == NULL) {
11 struct Atomic* atomic = queue->atomic;
12 goto atomic->checkAndSet(&last->next, nextElement, element, next(...), putSynchronizedQueue);
13 } else { // wrong last element
14 struct Atomic* atomic = queue->atomic;
15 goto atomic->checkAndSet(&queue->last, last, nextElement, putSynchronizedQueue, putSynchronizedQueue);
16 }
17 }