Last change
on this file since de3a579 was
c26bea2a,
checked in by Peter A. Buhr <pabuhr@…>, 17 months ago
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first attempt at renaming directory tests/concurrent to tests/concurrency to harmonize with other concurrency directory names
|
-
Property mode set to
100644
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File size:
968 bytes
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Rev | Line | |
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[357ab79] | 1 | #include <fstream.hfa> |
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| 2 | #include <locks.hfa> |
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| 3 | #include <thread.hfa> |
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| 4 | |
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| 5 | const unsigned int num_times = 50000; |
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| 6 | |
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| 7 | struct MutexObj { |
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| 8 | mcs_lock l; |
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| 9 | thread$ * id; |
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| 10 | size_t sum; |
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| 11 | }; |
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| 12 | |
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| 13 | MutexObj mo; |
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| 14 | |
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| 15 | void trash() { |
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| 16 | unsigned t[100]; |
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| 17 | for(i; 100) { |
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| 18 | t[i] = 0xDEADBEEF; |
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| 19 | } |
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| 20 | } |
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| 21 | |
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| 22 | unsigned cs() { |
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| 23 | thread$ * me = active_thread(); |
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| 24 | unsigned value = (unsigned)me; |
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| 25 | mcs_node n; |
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| 26 | lock(mo.l, n); |
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| 27 | { |
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| 28 | size_t tsum = mo.sum; |
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| 29 | mo.id = me; |
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| 30 | yield(random(5)); |
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| 31 | if(mo.id != me) sout | "Intruder!"; |
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| 32 | mo.sum = tsum + value; |
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| 33 | } |
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| 34 | unlock(mo.l, n); |
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| 35 | return value; |
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| 36 | } |
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| 37 | |
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| 38 | thread LockCheck { |
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| 39 | size_t sum; |
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| 40 | }; |
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| 41 | |
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| 42 | void main(LockCheck & this) { |
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| 43 | this.sum = 0; |
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| 44 | for(num_times) { |
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| 45 | trash(); |
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| 46 | this.sum += cs(); |
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| 47 | trash(); |
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| 48 | yield(random(10)); |
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| 49 | } |
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| 50 | } |
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| 51 | |
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| 52 | int main() { |
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| 53 | size_t sum = -32; |
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| 54 | mo.sum = -32; |
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| 55 | processor p[2]; |
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| 56 | sout | "Starting"; |
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| 57 | { |
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| 58 | LockCheck checkers[13]; |
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| 59 | for(i;13) { |
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| 60 | sum += join(checkers[i]).sum; |
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| 61 | } |
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| 62 | } |
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| 63 | sout | "Done!"; |
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| 64 | if(sum == mo.sum) sout | "Match!"; |
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| 65 | else sout | "No Match!" | sum | "vs" | mo.sum; |
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| 66 | } |
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