ADT
arm-eh
ast-experimental
enum
forall-pointer-decay
jacob/cs343-translation
new-ast
new-ast-unique-expr
pthread-emulation
qualifiedEnum
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Last change
on this file since be91ab4 was 487198c, checked in by Thierry Delisle <tdelisle@…>, 6 years ago |
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Apparently forgot to commit the CASCON19 presentation
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Property mode
set to
100644
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File size:
1.0 KB
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| [487198c] | 1 | // Original
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| 2 | void sum_many_async(int[] inputs, lambda_t callback);
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| 3 |
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| 4 | // Target
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| 5 | int sum_many (int[] inputs);
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| 6 |
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| 7 | //==================================
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| 8 |
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| 9 | int sum_many(int[] inputs) {
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| 10 | // setup required data
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| 11 | int result;
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| 12 | semaphore_t sem = { 0 };
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| 13 |
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| 14 | // call async function
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| 15 | sum_many_async( inputs, (int sum) {
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| 16 | result = sum;
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| 17 | V(sem);
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| 18 | });
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| 19 |
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| 20 | // wait for result
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| 21 | P(sem);
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| 22 |
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| 23 | // return
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| 24 | return result;
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| 25 | }
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| 26 |
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| 27 |
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| 28 | int sum_many_block(int[] inputs);
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| 29 | int sum_many (int[] inputs);
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| 30 |
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| 31 | //==================================
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| 32 |
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| 33 | struct request_t {
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| 34 | int[] inputs;
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| 35 | int result;
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| 36 | semaphore_t sem = { 0 };
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| 37 | };
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| 38 |
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| 39 | void * call_sum_many_block(void * args) {
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| 40 | request_t * req = (request_t *) args;
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| 41 | req->result = sum_many_block(req->inputs);
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| 42 | V(req->sem);
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| 43 | }
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| 44 |
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| 45 | int sum_many(int[] inputs) {
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| 46 | // setup required data
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| 47 | request_t req = { inputs };
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| 48 |
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| 49 | // create thread to
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| 50 | pthread_t thrd;
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| 51 | int err = pthread_fork(&thrd, 0p, call_sum_many_block, &req);
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| 52 | handle(err);
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| 53 |
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| 54 | // wait
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| 55 | P(req.sem);
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| 56 |
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| 57 | // Cleanup pthread
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| 58 | err = pthread_join(&thrd, 0p);
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| 59 | handle(err);
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| 60 |
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| 61 | // get result
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| 62 | return req.result;
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| 63 | }
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