Last change
on this file since 8cbe732 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:
1.5 KB
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Rev | Line | |
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[357ab79] | 1 | |
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| 2 | #include <fstream.hfa> |
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| 3 | #include <locks.hfa> |
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| 4 | #include <thread.hfa> |
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| 5 | |
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| 6 | const unsigned int num_times = 50; |
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| 7 | |
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| 8 | struct MutexObj { |
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| 9 | LOCK l; |
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| 10 | thread$ * id; |
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| 11 | uint32_t sum; |
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| 12 | uint32_t cnt; |
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| 13 | }; |
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| 14 | |
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| 15 | MutexObj mo; |
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| 16 | |
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| 17 | void trash() { |
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| 18 | unsigned t[100]; |
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| 19 | for(i; 100) { |
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| 20 | t[i] = 0xDEADBEEF; |
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| 21 | } |
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| 22 | } |
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| 23 | |
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| 24 | uint32_t cs(uint32_t & entries) { |
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| 25 | thread$ * me = active_thread(); |
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| 26 | uint32_t value; |
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| 27 | lock(mo.l); |
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| 28 | { |
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| 29 | entries++; |
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| 30 | uint32_t tsum = mo.sum; |
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| 31 | uint32_t cnt = mo.cnt; |
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| 32 | mo.id = me; |
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| 33 | yield(random(5)); |
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| 34 | value = ((uint32_t)random()) ^ ((uint32_t)me); |
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| 35 | if(mo.id != me) sout | "Intruder!"; |
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| 36 | mo.cnt = cnt + 1; |
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| 37 | mo.sum = tsum + value; |
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| 38 | } |
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| 39 | unlock(mo.l); |
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| 40 | return value; |
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| 41 | } |
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| 42 | |
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| 43 | thread LockCheck { |
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| 44 | uint32_t sum; |
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| 45 | uint32_t entries; |
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| 46 | }; |
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| 47 | |
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| 48 | void main(LockCheck & this) { |
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| 49 | this.sum = 0; |
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| 50 | this.entries = 0; |
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| 51 | for(num_times) { |
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| 52 | trash(); |
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| 53 | this.sum += cs( this.entries ); |
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| 54 | trash(); |
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| 55 | yield(random(10)); |
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| 56 | } |
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| 57 | } |
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| 58 | |
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| 59 | void test() { |
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| 60 | uint32_t sum = -32; |
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| 61 | mo.sum = -32; |
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| 62 | mo.cnt = 0; |
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| 63 | uint32_t real_entries = 0; |
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| 64 | processor p[2]; |
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| 65 | sout | "Starting"; |
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| 66 | { |
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| 67 | LockCheck checkers[13]; |
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| 68 | for(i;13) { |
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| 69 | LockCheck & curr = join(checkers[i]); |
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| 70 | sum += curr.sum; |
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| 71 | real_entries += curr.entries; |
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| 72 | } |
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| 73 | } |
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| 74 | sout | "Done!"; |
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| 75 | if(real_entries != (13 * num_times)) sout | "Invalid real cs count!" | mo.cnt | "vs "| (13 * num_times) | "(13 *" | num_times | ')'; |
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| 76 | if(mo.cnt != (13 * num_times)) sout | "Invalid concurrent cs count!" | mo.cnt | "vs "| (13 * num_times) | "(13 *" | num_times | ')'; |
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| 77 | if(sum == mo.sum) sout | "Match!"; |
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| 78 | else sout | "No Match!" | sum | "vs" | mo.sum; |
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| 79 | } |
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