wwbmmm commented on issue #1449:
URL: https://github.com/apache/incubator-brpc/issues/1449#issuecomment-872665659
I had encountered this problem before, finally I created a wrapper class
that ensure calling bthread_getspecific before bthread_setspecific:
```cpp
template<typename T>
class BThreadLocal {
public:
BThreadLocal() {
bthread_key_create(&m_key,
[](void* p) { delete (T*)p; });
}
T* get() const {
return (T*)bthread_getspecific(m_key);
}
T* get_or_create() {
T *p = get();
if (p == nullptr) {
p = new T();
set(p);
}
return p;
}
T *operator->() {
return get_or_create();
}
T &operator*() {
return *get_or_create();
}
private:
// User can't call set(), that may cause memory leak
int set(T* p) {
return bthread_setspecific(m_key, p);
}
bthread_key_t m_key;
};
```
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