library/cpp/monlib/counters/counters_ut.cpp


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49

#include "counters.h" 
 
#include <library/cpp/testing/unittest/registar.h>
 
#include <util/generic/set.h> 
#include <util/thread/pool.h>
 
using namespace NMonitoring; 
 
Y_UNIT_TEST_SUITE(TDeprecatedCountersTest) { 
    Y_UNIT_TEST(CounterGroupsAreThreadSafe) {
        const static ui32 GROUPS_COUNT = 1000; 
        const static ui32 THREADS_COUNT = 10; 
 
        TDeprecatedCounterGroups<ui32, ui32> groups; 
 
        auto adder = [&groups]() { 
            for (ui32 id = 0; id < GROUPS_COUNT; id++) { 
                groups.Get(id); 
 
                // adds contention 
                ::NanoSleep(42); 
            } 
        }; 
 
        TThreadPool q;
        q.Start(THREADS_COUNT); 
        for (ui32 i = 0; i < THREADS_COUNT; i++) { 
            q.SafeAddFunc(adder); 
        } 
        q.Stop(); 
 
        // each group id is present 
        for (ui32 id = 0; id < GROUPS_COUNT; id++) { 
            UNIT_ASSERT(groups.Has(id)); 
        } 
 
        // group names contains only appropriate ids 
        auto ids = groups.GetGroupsNames(); 
        for (ui32 id : *ids) { 
            UNIT_ASSERT(id < GROUPS_COUNT); 
        } 
 
        // no duplication in group names 
        TSet<ui32> uniqueIds(ids->begin(), ids->end());
        UNIT_ASSERT_EQUAL(ids->size(), uniqueIds.size()); 
        UNIT_ASSERT_EQUAL(ids->size(), GROUPS_COUNT); 
    } 
}