ADTast-experimentalpthread-emulation
Last change
on this file since e116db3 was
487198c,
checked in by Thierry Delisle <tdelisle@…>, 5 years ago
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Apparently forgot to commit the CASCON19 presentation
|
-
Property mode set to
100644
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File size:
1.0 KB
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Rev | Line | |
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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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