ADTarm-ehast-experimentalenumforall-pointer-decayjacob/cs343-translationnew-ast-unique-exprpthread-emulationqualifiedEnum
Last change
on this file since 09ee131 was
bb662027,
checked in by Thierry Delisle <tdelisle@…>, 4 years ago
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Added cfathread C library which encapsulates a small part of libcfa threads in a C interface.
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-
Property mode set to
100644
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File size:
1.4 KB
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1 | #include <clib/cfathread.h> |
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2 | |
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3 | #include <stdio.h> |
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4 | #include <stdlib.h> |
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5 | |
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6 | thread_local struct drand48_data buffer = { 0 }; |
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7 | int myrand() { |
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8 | long int result; |
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9 | lrand48_r(&buffer, &result); |
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10 | return result; |
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11 | } |
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12 | |
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13 | |
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14 | enum Constants { blocked_size = 20 }; |
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15 | cfathread_t volatile blocked[blocked_size]; |
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16 | |
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17 | void Worker( cfathread_t this ) { |
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18 | for(int i = 0; i < 1000; i++) { |
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19 | int idx = myrand() % blocked_size; |
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20 | if(blocked[idx]) { |
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21 | cfathread_t thrd = __atomic_exchange_n(&blocked[idx], NULL, __ATOMIC_SEQ_CST); |
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22 | cfathread_unpark( thrd ); |
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23 | } else { |
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24 | cfathread_t thrd = __atomic_exchange_n(&blocked[idx], this, __ATOMIC_SEQ_CST); |
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25 | cfathread_unpark( thrd ); |
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26 | cfathread_park(); |
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27 | } |
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28 | } |
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29 | printf("Done\n"); |
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30 | } |
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31 | |
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32 | volatile bool stop; |
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33 | void Unparker( cfathread_t this ) { |
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34 | while(!stop) { |
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35 | int idx = myrand() % blocked_size; |
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36 | cfathread_t thrd = __atomic_exchange_n(&blocked[idx], NULL, __ATOMIC_SEQ_CST); |
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37 | cfathread_unpark( thrd ); |
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38 | int r = myrand() % 20; |
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39 | for( int i = 0; i < r; i++ ) { |
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40 | cfathread_yield(); |
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41 | } |
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42 | } |
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43 | printf("Done Unparker\n"); |
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44 | } |
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45 | |
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46 | |
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47 | int main() { |
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48 | stop = false; |
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49 | for(int i = 0; i < blocked_size; i++) { |
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50 | blocked[i] = NULL; |
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51 | } |
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52 | |
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53 | cfathread_setproccnt( 4 ); |
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54 | cfathread_t u = cfathread_create( Unparker ); |
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55 | { |
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56 | cfathread_t t[20]; |
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57 | for(int i = 0; i < 20; i++) { |
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58 | t[i] = cfathread_create( Worker ); |
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59 | } |
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60 | for(int i = 0; i < 20; i++) { |
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61 | cfathread_join( t[i] ); |
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62 | } |
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63 | } |
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64 | stop = true; |
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65 | cfathread_join(u); |
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66 | cfathread_setproccnt( 1 ); |
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67 | } |
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