core: add pointer in some callbacks (closes #406)

This pointer is the first argument received by callbacks, and the
existing argument "data" is now automatically freed by WeeChat when the
object containing the callback is removed.

With this new pointer, the linked list of callbacks in scripts has been
removed. This will improve speed of scripts (using a lot of hooks),
reduce memory used by scripts and reduce time to unload scripts.

Following functions are affected in the C API:

* exec_on_files
* config_new
* config_new_section
* config_new_option
* hook_command
* hook_command_run
* hook_timer
* hook_fd
* hook_process
* hook_process_hashtable
* hook_connect
* hook_print
* hook_signal
* hook_hsignal
* hook_config
* hook_completion
* hook_modifier
* hook_info
* hook_info_hashtable
* hook_infolist
* hook_hdata
* hook_focus
* unhook_all_plugin
* buffer_new
* bar_item_new
* upgrade_new
* upgrade_read

1 files changed, 11 insertions, 6 deletions

diff --git a/src/plugins/fifo/fifo.c b/src/plugins/fifo/fifo.c
index 4331eeafa..e438fc4a1 100644
--- a/src/plugins/fifo/fifo.c
+++ b/src/plugins/fifo/fifo.c
@@ -55,7 +55,7 @@ char *fifo_filename;
 char *fifo_unterminated = NULL;
 
 
-int fifo_read();
+int fifo_fd_cb ();
 
 
 /*
@@ -164,7 +164,7 @@ fifo_create ()
                                         fifo_filename);
                     }
                     fifo_fd_hook = weechat_hook_fd (fifo_fd, 1, 0, 0,
-                                                    &fifo_read, NULL);
+                                                    &fifo_fd_cb, NULL, NULL);
                 }
                 else
                     weechat_printf (NULL,
@@ -290,13 +290,14 @@ fifo_exec (const char *text)
  */
 
 int
-fifo_read (void *data, int fd)
+fifo_fd_cb (const void *pointer, void *data, int fd)
 {
     static char buffer[4096 + 2];
     char *buf2, *pos, *ptr_buf, *next_ptr_buf;
     int num_read;
 
     /* make C compiler happy */
+    (void) pointer;
     (void) data;
     (void) fd;
 
@@ -386,8 +387,10 @@ fifo_read (void *data, int fd)
                 fifo_remove ();
             }
             else
+            {
                 fifo_fd_hook = weechat_hook_fd (fifo_fd, 1, 0, 0,
-                                                &fifo_read, NULL);
+                                                &fifo_fd_cb, NULL, NULL);
+            }
         }
     }
 
@@ -399,9 +402,11 @@ fifo_read (void *data, int fd)
  */
 
 int
-fifo_config_cb (void *data, const char *option, const char *value)
+fifo_config_cb (const void *pointer, void *data,
+                const char *option, const char *value)
 {
     /* make C compiler happy */
+    (void) pointer;
     (void) data;
     (void) option;
 
@@ -440,7 +445,7 @@ weechat_plugin_init (struct t_weechat_plugin *plugin, int argc, char *argv[])
 
     snprintf (str_option, sizeof (str_option),
               "plugins.var.fifo.%s", FIFO_OPTION_NAME);
-    weechat_hook_config (str_option, &fifo_config_cb, NULL);
+    weechat_hook_config (str_option, &fifo_config_cb, NULL, NULL);
 
     fifo_command_init ();
     fifo_info_init ();