Method AppendAndDestroySelf

test/brpc_socket_unittest.cpp:194–201

        : _str(str), _len(len), _called(called) {}
private:
    butil::Status AppendAndDestroySelf(butil::IOBuf* out_buf, brpc::Socket*) {
        out_buf->append(_str, _len);
        if (_called) {
            *_called = g_called_seq.fetch_add(1, butil::memory_order_relaxed);
        }
        delete this;
        return butil::Status::OK();
    };
    const char* _str;
    size_t _len;
    int* _called;