Method ~CountersWrapper

test/bthread_key_unittest.cpp:71–76

struct CountersWrapper {
    CountersWrapper(Counters* c, bthread_key_t key) : _c(c), _key(key) {}
    ~CountersWrapper() {
        if (_c) {
            _c->ndestroy.fetch_add(1, butil::memory_order_relaxed);
        }
        CHECK_EQ(0, bthread_key_delete(_key));
    }
private:
    Counters* _c;
    bthread_key_t _key;