From 421719f1d21a6c80ce28f0c634e0e50f2bd8834d Mon Sep 17 00:00:00 2001
From: tsauerbeck <tsauerbeck>
Date: Mon, 28 Mar 2005 08:55:59 +0000
Subject: [PATCH] Ecore_Fd_Handler: added a 'prepare' callback, that is called
 just before the main loop does its select() run for the FD handlers

SVN revision: 13957
---
 legacy/ecore/src/lib/ecore/Ecore.h         |  1 +
 legacy/ecore/src/lib/ecore/ecore_main.c    | 24 ++++++++++++++++++++++
 legacy/ecore/src/lib/ecore/ecore_private.h |  2 ++
 3 files changed, 27 insertions(+)

diff --git a/legacy/ecore/src/lib/ecore/Ecore.h b/legacy/ecore/src/lib/ecore/Ecore.h
index 69217cfc7b..bd74b5bd16 100644
--- a/legacy/ecore/src/lib/ecore/Ecore.h
+++ b/legacy/ecore/src/lib/ecore/Ecore.h
@@ -231,6 +231,7 @@ extern "C" {
    EAPI void              ecore_main_loop_begin(void);
    EAPI void              ecore_main_loop_quit(void);
    EAPI Ecore_Fd_Handler *ecore_main_fd_handler_add(int fd, Ecore_Fd_Handler_Flags flags, int (*func) (void *data, Ecore_Fd_Handler *fd_handler), const void *data, int (*buf_func) (void *buf_data, Ecore_Fd_Handler *fd_handler), const void *buf_data);
+   EAPI void              ecore_main_fd_handler_prepare_callback_set(Ecore_Fd_Handler *fd_handler, void (*func) (void *data, Ecore_Fd_Handler *fd_handler), const void *data);
    EAPI void             *ecore_main_fd_handler_del(Ecore_Fd_Handler *fd_handler);
    EAPI int               ecore_main_fd_handler_fd_get(Ecore_Fd_Handler *fd_handler);
    EAPI int               ecore_main_fd_handler_active_get(Ecore_Fd_Handler *fd_handler, Ecore_Fd_Handler_Flags flags);
diff --git a/legacy/ecore/src/lib/ecore/ecore_main.c b/legacy/ecore/src/lib/ecore/ecore_main.c
index 6c8417897a..a0d3ac585f 100644
--- a/legacy/ecore/src/lib/ecore/ecore_main.c
+++ b/legacy/ecore/src/lib/ecore/ecore_main.c
@@ -165,6 +165,19 @@ ecore_main_fd_handler_del(Ecore_Fd_Handler *fd_handler)
    return fd_handler->data;
 }
 
+void
+ecore_main_fd_handler_prepare_callback_set(Ecore_Fd_Handler *fd_handler, void (*func) (void *data, Ecore_Fd_Handler *fd_handler), const void *data)
+{
+   if (!ECORE_MAGIC_CHECK(fd_handler, ECORE_MAGIC_FD_HANDLER))
+     {
+	ECORE_MAGIC_FAIL(fd_handler, ECORE_MAGIC_FD_HANDLER, 
+			 "ecore_main_fd_handler_prepare_callback_set");
+	return;
+     }
+   fd_handler->prep_func = func;
+   fd_handler->prep_data = data;
+}
+
 /**
  * Retrieves the file descriptor that the given handler is handling.
  * @param   fd_handler The given FD handler.
@@ -287,6 +300,17 @@ _ecore_main_select(double timeout)
    FD_ZERO(&rfds);
    FD_ZERO(&wfds);
    FD_ZERO(&exfds);
+
+   /* call the prepare callback for all handlers */
+   for (l = (Ecore_Oldlist *)fd_handlers; l; l = l->next)
+     {
+	Ecore_Fd_Handler *fdh;
+	
+	fdh = (Ecore_Fd_Handler *)l;
+
+	if (fdh->prep_func)
+		fdh->prep_func (fdh->prep_data, fdh);
+     }
    for (l = (Ecore_Oldlist *)fd_handlers; l; l = l->next)
      {
 	Ecore_Fd_Handler *fdh;
diff --git a/legacy/ecore/src/lib/ecore/ecore_private.h b/legacy/ecore/src/lib/ecore/ecore_private.h
index 9a8c62733e..c8df4cbb0c 100644
--- a/legacy/ecore/src/lib/ecore/ecore_private.h
+++ b/legacy/ecore/src/lib/ecore/ecore_private.h
@@ -137,6 +137,8 @@ struct _Ecore_Fd_Handler
    void                    *data;
    int                    (*buf_func) (void *data, Ecore_Fd_Handler *fd_handler);
    void                    *buf_data;
+   void                   (*prep_func) (void *data, Ecore_Fd_Handler *fd_handler);
+   void                    *prep_data;
 };
 
 struct _Ecore_Event_Handler