Last change
on this file since 7fe4adbb was
c26bea2a,
checked in by Peter A. Buhr <pabuhr@…>, 15 months ago
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first attempt at renaming directory tests/concurrent to tests/concurrency to harmonize with other concurrency directory names
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-
Property mode set to
100644
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File size:
1.1 KB
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1 | #include <thread.hfa> |
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2 | #include <fstream.hfa> |
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3 | |
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4 | volatile int global = 0; |
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5 | |
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6 | thread Poller {}; |
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7 | void main(Poller & this) { |
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8 | while(true) { |
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9 | waitfor( ^?{} : this ) { |
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10 | break; |
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11 | } or else { |
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12 | global = (global + 1) % 10; |
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13 | yield(); |
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14 | } |
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15 | } |
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16 | } |
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17 | |
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18 | thread Waiter {}; |
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19 | |
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20 | volatile int count = 0; |
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21 | |
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22 | void main(Waiter & this) { |
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23 | // Get a unique id |
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24 | int id = __atomic_fetch_add(&count, 1, __ATOMIC_SEQ_CST); |
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25 | int id_hash = id | (id << 8) | (id << 16) | (id << 24); |
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26 | int mask = 0xCAFEBABA; |
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27 | |
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28 | for(int i = 0; i < 5; i++) { |
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29 | assert(mask == 0xCAFEBABA); |
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30 | |
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31 | // Unpark this thread, don't force a yield |
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32 | unpark( this ); |
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33 | assert(mask == 0xCAFEBABA); |
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34 | |
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35 | // Hash the mask to make sure no one else messes with them |
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36 | mask ^= id_hash; |
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37 | assert(mask == (id_hash ^ 0xCAFEBABA)); |
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38 | |
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39 | // Force a preemption before the call to park |
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40 | int prev = global; |
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41 | while(prev == global) {} |
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42 | |
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43 | // Park this thread, |
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44 | assert(mask == (id_hash ^ 0xCAFEBABA)); |
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45 | park(); |
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46 | assert(mask == (id_hash ^ 0xCAFEBABA)); |
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47 | |
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48 | // Reset the hash and recheck it |
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49 | mask ^= id_hash; |
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50 | assert(mask == 0xCAFEBABA); |
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51 | } |
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52 | } |
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53 | |
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54 | int main() { |
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55 | Poller p; |
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56 | { |
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57 | Waiter waiters[5]; |
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58 | } |
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59 | printf( "done\n" ); // non-empty .expect file |
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60 | } |
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