372046933 commented on issue #1907:
URL: https://github.com/apache/brpc/issues/1907#issuecomment-3344784745
> 我有一段内存想要自己管理或者上层系统管理，例如
>
> static void NoOpDeleter(void *) {}
>
> class EchoServiceImpl : public EchoService {
> public:
> EchoServiceImpl() {};
> virtual ~EchoServiceImpl() {};
> virtual void Echo(google::protobuf::RpcController* cntl_base,
> const EchoRequest* request,
> EchoResponse* response,
> google::protobuf::Closure* done) {
> std::vector<int> a;
> {
> brpc::ClosureGuard done_guard(done);
> brpc::Controller* cntl =
> static_cast<brpc::Controller*>(cntl_base);
> a.resize(dim);
> //... a do some calc
> butil::IOBuf &buf = cntl.response_attachment();
> buf.append_user_data(a.data(), a.size() * sizeof(int), NoOpDeleter);
> }
> }
> }
> 我的理解是done->Run()过程中，done->Run()是阻塞的，数据`a`会发送结束再出括号再析构a，但是我实际操作发现结果是不正确的。
>
> 所以我想问一下如果采用NoOpDeleter这样方式手动管理内存的生命周期，这块内存的生命周期需要存活多久才能保证发送的数据安全。
>
> 另外，如果我的数据通过[bthread
local](https://github.com/apache/incubator-brpc/blob/master/docs/en/server.md#bthread-local)创建，采用NoOpDeleter这种方式管理安全吗？
我在client端做了类似的逻辑，发现也是有问题的
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