[Spice-devel] [PATCH] client: Fix for clipboard sending; It wasn't thread safe.

[Alon Levy]

----- "Yonit Halperin" <yhalperi at redhat.com> wrote:

> ---
>  client/red_client.cpp |   23 +++++++++++++++++++----
>  client/red_client.h   |    9 ++++++++-
>  2 files changed, 27 insertions(+), 5 deletions(-)
> 
> diff --git a/client/red_client.cpp b/client/red_client.cpp
> index 9a8078e..b6a412e 100644
> --- a/client/red_client.cpp
> +++ b/client/red_client.cpp
> @@ -75,6 +75,11 @@ private:
>      RedClient& _client;
>  };
>  
> +void ClipboardEvent::response(AbstractProcessLoop& events_loop)
> +{
> +   
> static_cast<RedClient*>(events_loop.get_owner())->send_agent_clipboard();
> +}
> +
>  Migrate::Migrate(RedClient& client)
>      : _client (client)
>      , _running (false)
> @@ -747,7 +752,7 @@ uint32_t get_agent_clipboard_type(uint32_t type)
>      }
>  }
>  
> -void RedClient::post_agent_clipboard()
> +void RedClient::do_send_agent_clipboard()
>  {
>      uint32_t size;
>  
> @@ -771,7 +776,7 @@ void RedClient::post_agent_clipboard()
>  }
>  
>  //FIXME: currently supports text only; better name - poll_clipboard?
> -void RedClient::on_clipboard_change()
> +void RedClient::send_agent_clipboard()
>  {
>      //FIXME: check connected  - assert on disconnect
>      uint32_t clip_type = Platform::CLIPBOARD_UTF8_TEXT;
> @@ -799,11 +804,18 @@ void RedClient::on_clipboard_change()
>          _agent_out_msg_size = 0;
>          return;
>      }
> +
>      if (_agent_tokens) {
> -        post_agent_clipboard();
> +        do_send_agent_clipboard();
>      }
>  }
>  
> +void RedClient::on_clipboard_change()
> +{
> +    AutoRef<ClipboardEvent> event(new ClipboardEvent());
> +    get_process_loop().push_event(*event);
> +}
> +
>  void RedClient::set_mouse_mode(uint32_t supported_modes, uint32_t
> current_mode)
>  {
>      if (current_mode != _mouse_mode) {
> @@ -960,6 +972,8 @@ void
> RedClient::handle_agent_data(RedPeer::InMessage* message)
>              msg_size -= n;
>              msg_pos += n;
>              if (_agent_msg_pos == sizeof(VDAgentMessage)) {
> +                DBG(0, "agent msg start: msg_size=%d, protocol=%d,
> type=%d",
> +                    _agent_msg->size, _agent_msg->protocol,
> _agent_msg->type);
>                  if (_agent_msg->protocol != VD_AGENT_PROTOCOL) {
>                      THROW("Invalid protocol %u",
> _agent_msg->protocol);
>                  }
> @@ -974,6 +988,7 @@ void
> RedClient::handle_agent_data(RedPeer::InMessage* message)
>              msg_pos += n;
>          }
>          if (_agent_msg_pos == sizeof(VDAgentMessage) +
> _agent_msg->size) {
> +            DBG(0, "agent msg end");
>              switch (_agent_msg->type) {
>              case VD_AGENT_REPLY: {
>                  on_agent_reply((VDAgentReply*)_agent_msg_data);
> @@ -999,7 +1014,7 @@ void
> RedClient::handle_agent_tokens(RedPeer::InMessage* message)
>      SpiceMsgMainAgentTokens *token = (SpiceMsgMainAgentTokens
> *)message->data();
>      _agent_tokens += token->num_tokens;
>      if (_agent_out_msg_pos < _agent_out_msg_size) {
> -        post_agent_clipboard();
> +        do_send_agent_clipboard();
>      }
>  }
>  
> diff --git a/client/red_client.h b/client/red_client.h
> index fd1a9b4..6b4d4ab 100644
> --- a/client/red_client.h
> +++ b/client/red_client.h
> @@ -144,10 +144,16 @@ public:
>      uint32_t _color_depth;
>  };
>  
> +class ClipboardEvent : public Event {
> +public:
> +    virtual void response(AbstractProcessLoop& events_loop);
> +};
> +
>  class RedClient: public RedChannel {
>  public:
>      friend class RedChannel;
>      friend class Migrate;
> +    friend class ClipboardEvent;
>  
>      RedClient(Application& application);
>      ~RedClient();
> @@ -224,7 +230,8 @@ private:
>  
>      void on_agent_reply(VDAgentReply* reply);
>      void on_agent_clipboard(VDAgentClipboard* clipboard, uint32_t
> size);
> -    void post_agent_clipboard();
> +    void send_agent_clipboard();
> +    void do_send_agent_clipboard();
>  
>      ChannelFactory* find_factory(uint32_t type);
>      void create_channel(uint32_t type, uint32_t id);
> -- 
> 1.7.1.1
> 
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ACK