From c0854c3e1746f81abcba27505c7f8adc09ff2c45 Mon Sep 17 00:00:00 2001
From: Mikael Ronstrom <mikael@dator8>
Date: Thu, 28 Oct 2010 18:27:25 +0200
Subject: Added reporting of fsync to THD wait interface

---
 mysys/my_sync.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'mysys/my_sync.c')

diff --git a/mysys/my_sync.c b/mysys/my_sync.c
index bc050922ffc..6a4e26a6542 100644
--- a/mysys/my_sync.c
+++ b/mysys/my_sync.c
@@ -17,6 +17,16 @@
 #include "mysys_err.h"
 #include <errno.h>
 
+static void (*before_sync_wait)(void)= 0;
+static void (*after_sync_wait)(void)= 0;
+
+void thr_set_sync_wait_callback(void (*before_wait)(void),
+                                void (*after_wait)(void))
+{
+  before_sync_wait= before_wait;
+  after_sync_wait= after_wait;
+}
+
 /*
   Sync data in file to disk
 
@@ -48,6 +58,8 @@ int my_sync(File fd, myf my_flags)
 
   do
   {
+    if (before_sync_wait)
+      (*before_sync_wait)();
 #if defined(F_FULLFSYNC)
     /*
       In Mac OS X >= 10.3 this call is safer than fsync() (it forces the
@@ -75,6 +87,8 @@ int my_sync(File fd, myf my_flags)
     int er= errno;
     if (!(my_errno= er))
       my_errno= -1;                             /* Unknown error */
+    if (after_sync_wait)
+      (*after_sync_wait)();
     if ((my_flags & MY_IGNORE_BADFD) &&
         (er == EBADF || er == EINVAL || er == EROFS))
     {
@@ -84,6 +98,11 @@ int my_sync(File fd, myf my_flags)
     else if (my_flags & MY_WME)
       my_error(EE_SYNC, MYF(ME_BELL+ME_WAITTANG), my_filename(fd), my_errno);
   }
+  else
+  {
+    if (after_sync_wait)
+      (*after_sync_wait)();
+  }
   DBUG_RETURN(res);
 } /* my_sync */
 
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