Hi, The stub can be shared by different calls, but the memory is freed in
https://github.com/grpc/grpc/blob/master/src/core/lib/surface/channel.c#L311

You can try to define GRPC_STREAM_REFCOUNT_DEBUG to have more logs.

On Tue, Sep 27, 2016 at 5:17 PM, <[email protected]> wrote:

> I am tracking down a memory leak, and it leads to the NewStub call (async
> in my case).  In our code, for every rpc request from the client, a NewStub
> is created to send the request. The stub object returned from NewStub is
> correctly deleted (as a unique_ptr), but something else during the call is
> not.
>
> From the code, Stub::Stub sets the RpcMethod object. RpcMethod's
> constructor calls channel->RegisterMethod(name), which then calls
> grpc_channel_register_call who does a gpr_malloc(sizeof(registered_call)).
> I am not sure when this memory should be freed, but jeprof also reports
> this gpr_malloc is leaking.
>
> I also tried turning on GRPC_TRACE, and saw this
> grpc_channel_register_call, but never the one that frees the memory. Maybe
> I am not familiar with the grpc code, but can someone explain how this
> memory is freed?
>
> Thanks for any pointer.
>
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