Re: [PATCH 2/4] Use macros for casting Channel types

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On Fri, 2016-10-07 at 17:01 -0500, Jonathon Jongsma wrote:
> In preparation for converting RedChannel to GObject, switch to using
> RED_CHANNEL()-type macros for casting. For now they just do a
> regular
> cast, but it helps reduce the size of the GObject patch to make it
> easier to review.
I agree

git grep "Channel \?\*)"

gives few more occurrences

Pavel

> ---
>  server/common-graphics-channel.c | 2 +-
>  server/cursor-channel.c          | 6 +++---
>  server/cursor-channel.h          | 1 +
>  server/display-channel.c         | 4 ++--
>  server/display-channel.h         | 2 ++
>  server/inputs-channel-client.c   | 2 +-
>  server/inputs-channel.c          | 2 +-
>  server/inputs-channel.h          | 1 +
>  server/main-channel-client.c     | 2 +-
>  server/main-channel.c            | 2 +-
>  server/main-channel.h            | 2 ++
>  11 files changed, 16 insertions(+), 10 deletions(-)
> 
> diff --git a/server/common-graphics-channel.c b/server/common-
> graphics-channel.c
> index 625162c..bcf7279 100644
> --- a/server/common-graphics-channel.c
> +++ b/server/common-graphics-channel.c
> @@ -122,7 +122,7 @@ CommonGraphicsChannel*
> common_graphics_channel_new(RedsState *server,
>                                          migration_flags);
>      spice_return_val_if_fail(channel, NULL);
>  
> -    common = (CommonGraphicsChannel *)channel;
> +    common = COMMON_GRAPHICS_CHANNEL(channel);
>      common->qxl = qxl;
>      return common;
>  }
> diff --git a/server/cursor-channel.c b/server/cursor-channel.c
> index c73745f..85a7fe5 100644
> --- a/server/cursor-channel.c
> +++ b/server/cursor-channel.c
> @@ -171,7 +171,7 @@ static void cursor_fill(CursorChannelClient
> *ccc, SpiceCursor *red_cursor,
>  
>  void cursor_channel_disconnect(CursorChannel *cursor_channel)
>  {
> -    RedChannel *channel = (RedChannel *)cursor_channel;
> +    RedChannel *channel = RED_CHANNEL(cursor_channel);
>  
>      if (!channel || !red_channel_is_connected(channel)) {
>          return;
> @@ -199,7 +199,7 @@ static void
> red_marshall_cursor_init(CursorChannelClient *ccc, SpiceMarshaller *
>      AddBufInfo info;
>  
>      spice_assert(rcc);
> -    cursor_channel =
> (CursorChannel*)red_channel_client_get_channel(rcc);
> +    cursor_channel =
> CURSOR_CHANNEL(red_channel_client_get_channel(rcc));
>  
>      red_channel_client_init_send_data(rcc, SPICE_MSG_CURSOR_INIT,
> NULL);
>      msg.visible = cursor_channel->priv->cursor_visible;
> @@ -325,7 +325,7 @@ CursorChannel* cursor_channel_new(RedsState
> *server, QXLInstance *qxl,
>                                            SPICE_CHANNEL_CURSOR, 0,
>                                            &cbs,
> red_channel_client_handle_message);
>  
> -    cursor_channel = (CursorChannel *)channel;
> +    cursor_channel = CURSOR_CHANNEL(channel);
>      cursor_channel->priv->cursor_visible = TRUE;
>      cursor_channel->priv->mouse_mode = SPICE_MOUSE_MODE_SERVER;
>  
> diff --git a/server/cursor-channel.h b/server/cursor-channel.h
> index a3ddaa3..0f2b43d 100644
> --- a/server/cursor-channel.h
> +++ b/server/cursor-channel.h
> @@ -20,6 +20,7 @@
>  
>  #include "common-graphics-channel.h"
>  
> +#define CURSOR_CHANNEL(channel) ((CursorChannel*)channel)
>  /**
>   * This type it's a RedChannel class which implement cursor (mouse)
>   * movements.
> diff --git a/server/display-channel.c b/server/display-channel.c
> index 93744a4..b9e2b93 100644
> --- a/server/display-channel.c
> +++ b/server/display-channel.c
> @@ -1924,10 +1924,10 @@ DisplayChannel*
> display_channel_new(RedsState *reds,
>      };
>  
>      spice_info("create display channel");
> -    display = (DisplayChannel *)common_graphics_channel_new(
> +    display = DISPLAY_CHANNEL(common_graphics_channel_new(
>          reds, qxl, core, sizeof(*display), SPICE_CHANNEL_DISPLAY,
>          SPICE_MIGRATE_NEED_FLUSH |
> SPICE_MIGRATE_NEED_DATA_TRANSFER,
> -        &cbs, dcc_handle_message);
> +        &cbs, dcc_handle_message));
>      spice_return_val_if_fail(display, NULL);
>      display->priv->pub = display;
>  
> diff --git a/server/display-channel.h b/server/display-channel.h
> index 936768e..998970e 100644
> --- a/server/display-channel.h
> +++ b/server/display-channel.h
> @@ -45,6 +45,8 @@
>  #include "image-encoders.h"
>  #include "common-graphics-channel.h"
>  
> +#define DISPLAY_CHANNEL(channel) ((DisplayChannel*)channel)
> +
>  typedef struct DependItem {
>      Drawable *drawable;
>      RingItem ring_item;
> diff --git a/server/inputs-channel-client.c b/server/inputs-channel-
> client.c
> index 76de382..4ab2457 100644
> --- a/server/inputs-channel-client.c
> +++ b/server/inputs-channel-client.c
> @@ -110,7 +110,7 @@ void
> inputs_channel_client_handle_migrate_data(InputsChannelClient *icc,
>  
>  void inputs_channel_client_on_mouse_motion(InputsChannelClient
> *icc)
>  {
> -    InputsChannel *inputs_channel = (InputsChannel
> *)red_channel_client_get_channel(RED_CHANNEL_CLIENT(icc));
> +    InputsChannel *inputs_channel =
> INPUTS_CHANNEL(red_channel_client_get_channel(RED_CHANNEL_CLIENT(icc
> )));
>  
>      if (++icc->priv->motion_count % SPICE_INPUT_MOTION_ACK_BUNCH ==
> 0 &&
>          !inputs_channel_is_src_during_migrate(inputs_channel)) {
> diff --git a/server/inputs-channel.c b/server/inputs-channel.c
> index 840d5e9..83c1360 100644
> --- a/server/inputs-channel.c
> +++ b/server/inputs-channel.c
> @@ -151,7 +151,7 @@ static uint8_t
> *inputs_channel_alloc_msg_rcv_buf(RedChannelClient *rcc,
>                                                   uint16_t type,
>                                                   uint32_t size)
>  {
> -    InputsChannel *inputs_channel =
> (InputsChannel*)red_channel_client_get_channel(rcc);
> +    InputsChannel *inputs_channel =
> INPUTS_CHANNEL(red_channel_client_get_channel(rcc));
>  
>      if (size > RECEIVE_BUF_SIZE) {
>          spice_printerr("error: too large incoming message");
> diff --git a/server/inputs-channel.h b/server/inputs-channel.h
> index e8f92cc..7001094 100644
> --- a/server/inputs-channel.h
> +++ b/server/inputs-channel.h
> @@ -26,6 +26,7 @@
>  
>  #include "red-channel.h"
>  
> +#define INPUTS_CHANNEL(channel) ((InputsChannel*)channel)
>  typedef struct InputsChannel InputsChannel;
>  
>  InputsChannel* inputs_channel_new(RedsState *reds);
> diff --git a/server/main-channel-client.c b/server/main-channel-
> client.c
> index 9966a38..b30083f 100644
> --- a/server/main-channel-client.c
> +++ b/server/main-channel-client.c
> @@ -704,7 +704,7 @@ void
> main_channel_client_migrate(RedChannelClient *rcc)
>  gboolean
> main_channel_client_connect_semi_seamless(MainChannelClient *mcc)
>  {
>      RedChannelClient *rcc = RED_CHANNEL_CLIENT(mcc);
> -    MainChannel* main_channel =
> (MainChannel*)red_channel_client_get_channel(rcc);
> +    MainChannel* main_channel =
> MAIN_CHANNEL(red_channel_client_get_channel(rcc));
>      if (red_channel_client_test_remote_cap(rcc,
>                                             SPICE_MAIN_CAP_SEMI_SEAM
> LESS_MIGRATE)) {
>          RedClient *client = red_channel_client_get_client(rcc);
> diff --git a/server/main-channel.c b/server/main-channel.c
> index bf84694..a1b8e31 100644
> --- a/server/main-channel.c
> +++ b/server/main-channel.c
> @@ -329,7 +329,7 @@ MainChannel* main_channel_new(RedsState *reds)
>      client_cbs.migrate = main_channel_client_migrate;
>      red_channel_register_client_cbs(channel, &client_cbs, NULL);
>  
> -    return (MainChannel *)channel;
> +    return MAIN_CHANNEL(channel);
>  }
>  
>  static int main_channel_connect_semi_seamless(MainChannel
> *main_channel)
> diff --git a/server/main-channel.h b/server/main-channel.h
> index 868a14a..caea014 100644
> --- a/server/main-channel.h
> +++ b/server/main-channel.h
> @@ -25,6 +25,8 @@
>  #include "red-channel.h"
>  #include "main-channel-client.h"
>  
> +#define MAIN_CHANNEL(channel) ((MainChannel*)channel)
> +
>  // TODO: Defines used to calculate receive buffer size, and also by
> reds.c
>  // other options: is to make a reds_main_consts.h, to duplicate
> defines.
>  #define REDS_AGENT_WINDOW_SIZE 10
> 
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