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annotate src/parallel_execution/worker.c @ 95:3e28ee215c0e

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modify twice, use OSAtomiceCompareAndSwap
author Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
date Fri, 29 Jan 2016 05:36:52 +0900
parents
children d400948dbbab
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rev   line source
95
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
parents:
diff changeset
1 #include <libkern/OSAtomic.h>
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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2
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Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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3 #include "context.h"
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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4 #include "origin_cs.h"
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
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5
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6 __code getQueue(struct Context* context, struct Queue* queue, struct Node* node) {
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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7 if (queue->first == 0)
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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8 return;
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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9
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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10 struct Element* first = queue->first;
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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11 // if (__sync_bool_compare_and_swap(&queue->first, first, first->next)) {
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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12 if (OSAtomicCompareAndSwapPtr(first, first->next, (void*)&queue->first)) {
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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13 queue->count--;
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14
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Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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15 context->next = GetQueue;
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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16 stack_push(context->code_stack, &context->next);
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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17
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18 context->next = first->task->code;
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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19 node->key = first->task->key;
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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20
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Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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21 goto meta(context, Get);
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22 } else {
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Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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23 goto meta(context, GetQueue);
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Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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24 }
3e28ee215c0e modify twice, use OSAtomiceCompareAndSwap
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25 }
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26
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27 __code getQueue_stub(struct Context* context) {
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Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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28 goto getQueue(context, &context->data[ActiveQueue]->queue, &context->data[Node]->node);
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Shohei KOKUBO <e105744@ie.u-ryukyu.ac.jp>
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29 }