From 18758623d78ff9fbd4880761da6d40fdfe44c945 Mon Sep 17 00:00:00 2001
From: Quincey Koziol <koziol@hdfgroup.org>
Date: Fri, 13 Sep 2002 11:29:30 -0500
Subject: [svn-r5925] Purpose:     Code cleanup

Description:
    Eliminate memory leak of compact storage raw data buffer found by purify.

Platforms tested:
    FreeBSD 4.6 (sleipnir) w/C++
    Solaris 2.7 (arabica) w/C++
    IRIX64 6.5 (modi4) w/parallel & FORTRAN
---
 src/H5D.c       |  7 +++++--
 src/H5Olayout.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 60 insertions(+), 4 deletions(-)

diff --git a/src/H5D.c b/src/H5D.c
index 9f81ed0..0a3b78c 100644
--- a/src/H5D.c
+++ b/src/H5D.c
@@ -2184,12 +2184,12 @@ H5D_close(H5D_t *dataset)
     free_failed = (H5T_close(dataset->type) < 0 ||
 			H5I_dec_ref(dataset->dcpl_id) < 0);
 
-    /*Update header message of layout for compact dataset.*/
+    /* Update header message of layout for compact dataset. */
     if(dataset->layout.type==H5D_COMPACT && dataset->layout.dirty) {
         if(H5O_modify(&(dataset->ent), H5O_LAYOUT, 0, 0, &(dataset->layout))<0)
             HRETURN_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to update layout message");
         dataset->layout.dirty = FALSE;
-    }        
+    } /* end if */
 
     /* Close the dataset object */
     H5O_close(&(dataset->ent));
@@ -2201,6 +2201,9 @@ H5D_close(H5D_t *dataset)
      * above).
      */
     dataset->ent.file = NULL;
+    /* Free the buffer for the raw data for compact datasets */
+    if(dataset->layout.type==H5D_COMPACT)
+        dataset->layout.buf=H5MM_xfree(dataset->layout.buf);
     H5FL_FREE(H5D_t,dataset);
 
     if (free_failed)
diff --git a/src/H5Olayout.c b/src/H5Olayout.c
index 33797c6..08b2d2f 100644
--- a/src/H5Olayout.c
+++ b/src/H5Olayout.c
@@ -19,6 +19,7 @@ static void *H5O_layout_decode(H5F_t *f, const uint8_t *p, H5O_shared_t *sh);
 static herr_t H5O_layout_encode(H5F_t *f, uint8_t *p, const void *_mesg);
 static void *H5O_layout_copy(const void *_mesg, void *_dest);
 static size_t H5O_layout_size(H5F_t *f, const void *_mesg);
+static herr_t H5O_layout_reset (void *_mesg);
 static herr_t H5O_layout_free (void *_mesg);
 static herr_t H5O_layout_debug(H5F_t *f, const void *_mesg, FILE * stream,
 			       int indent, int fwidth);
@@ -32,7 +33,7 @@ const H5O_class_t H5O_LAYOUT[1] = {{
     H5O_layout_encode,      	/*encode message                */
     H5O_layout_copy,        	/*copy the native value         */
     H5O_layout_size,        	/*size of message on disk       */
-    NULL,                   	/*reset method                  */
+    H5O_layout_reset,           /*reset method                  */
     H5O_layout_free,        	/*free the struct         */
     NULL,		    	/*get share method		*/
     NULL,			/*set share method		*/
@@ -255,6 +256,16 @@ H5O_layout_copy(const void *_mesg, void *_dest)
     /* copy */
     *dest = *mesg;
 
+    /* Deep copy the buffer for compact datasets also */
+    if(mesg->type==H5D_COMPACT) {
+        /* Allocate memory for the raw data */
+        if (NULL==(dest->buf=H5MM_malloc(dest->size)))
+            HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "unable to allocate memory for compact dataset");
+
+        /* Copy over the raw data */
+        HDmemcpy(dest->buf,mesg->buf,dest->size);
+    } /* end if */
+
     /* Set return value */
     ret_value=dest;
 
@@ -350,6 +361,43 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:	H5O_layout_reset
+ *
+ * Purpose:	Frees resources within a data type message, but doesn't free
+ *		the message itself.
+ *
+ * Return:	Non-negative on success/Negative on failure
+ *
+ * Programmer:	Quincey Koziol
+ *              Friday, September 13, 2002
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5O_layout_reset (void *_mesg)
+{
+    H5O_layout_t     *mesg = (H5O_layout_t *) _mesg;
+    herr_t ret_value=SUCCEED;   /* Return value */
+
+    FUNC_ENTER_NOAPI(H5O_layout_reset, FAIL);
+
+    if(mesg) {
+        /* Free the compact storage buffer */
+        if(mesg->type==H5D_COMPACT)
+            mesg->buf=H5MM_xfree(mesg->buf);
+
+        /* Reset the message */
+        HDmemset(mesg, 0, sizeof(H5O_layout_t));
+    } /* end if */
+
+done:
+    FUNC_LEAVE (ret_value);
+}
+
+
+/*-------------------------------------------------------------------------
  * Function:	H5O_layout_free
  *
  * Purpose:	Free's the message
@@ -364,14 +412,19 @@ done:
  *-------------------------------------------------------------------------
  */
 static herr_t
-H5O_layout_free (void *mesg)
+H5O_layout_free (void *_mesg)
 {
+    H5O_layout_t     *mesg = (H5O_layout_t *) _mesg;
     herr_t ret_value=SUCCEED;   /* Return value */
 
     FUNC_ENTER_NOAPI(H5O_layout_free, FAIL);
 
     assert (mesg);
 
+    /* Free the compact storage buffer */
+    if(mesg->type==H5D_COMPACT)
+        mesg->buf=H5MM_xfree(mesg->buf);
+
     H5FL_FREE(H5O_layout_t,mesg);
 
 done:
-- 
cgit v0.12