[svn-r4002] Purpose:

    Bug fix/code improvement.
Description:
    'all' selections were (ab)using the array reading code and required that
    the internal data transfer buffer size be big enough to hold the an entire
    slab of the data, which was confusing and limiting for users.
Solution:
    Changed 'all' selections to use sequence reading code instead of array
    reading code.
Platforms tested:
    FreeBSD 4.3 (hawkwind)

1 files changed, 18 insertions, 18 deletions

diff --git a/src/H5D.c b/src/H5D.c
index 8aef16f..07da5b7 100644
--- a/src/H5D.c
+++ b/src/H5D.c
@@ -1589,7 +1589,6 @@ H5D_read(H5D_t *dataset, const H5T_t *mem_type, const H5S_t *mem_space,
     size_t		dst_type_size;	    /*size of destination type*/
     hsize_t		target_size;		/*desired buffer size	*/
     hsize_t		request_nelmts;		/*requested strip mine	*/
-    size_t		min_elem_out=1;     /*Minimum # of elements to output*/
     H5T_bkg_t	need_bkg;		    /*type of background buf*/
     H5S_t		*free_this_space=NULL;  /*data space to free	*/
     hbool_t     must_convert;       /*have to xfer the slow way*/
@@ -1775,15 +1774,15 @@ printf("%s: check 1.2, \n",FUNC);
     /*
      * This is the general case.  Figure out the strip mine size.
      */
-    if ((sconv->f->init)(&(dataset->layout), file_space, &file_iter, &min_elem_out)<0) {
+    if ((sconv->f->init)(&(dataset->layout), file_space, &file_iter)<0) {
         HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, FAIL,
 		     "unable to initialize file selection information");
     } 
-    if ((sconv->m->init)(&(dataset->layout), mem_space, &mem_iter, &min_elem_out)<0) {
+    if ((sconv->m->init)(&(dataset->layout), mem_space, &mem_iter)<0) {
         HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, FAIL,
 		     "unable to initialize memory selection information");
     } 
-    if ((sconv->m->init)(&(dataset->layout), mem_space, &bkg_iter, &min_elem_out)<0) {
+    if ((sconv->m->init)(&(dataset->layout), mem_space, &bkg_iter)<0) {
         HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, FAIL,
 		     "unable to initialize background selection information");
     } 
@@ -1792,12 +1791,10 @@ printf("%s: check 1.2, \n",FUNC);
     dst_type_size = H5T_get_size(mem_type);
     target_size = xfer_parms->buf_size;
 #ifdef QAK
-printf("%s: check 2.0, src_type_size=%d, dst_type_size=%d, target_size=%d, min_elem_out=%d\n",FUNC,(int)src_type_size,(int)dst_type_size,(int)target_size,(int)min_elem_out);
+printf("%s: check 2.0, src_type_size=%d, dst_type_size=%d, target_size=%d\n",FUNC,(int)src_type_size,(int)dst_type_size,(int)target_size);
 #endif /* QAK */
     request_nelmts = target_size / MAX(src_type_size, dst_type_size);
 
-    /* Adjust to the min. # of elements to output */
-    request_nelmts = (request_nelmts/min_elem_out)*min_elem_out;
 #ifdef QAK
     printf("%s: check 3.0, request_nelmts=%d\n",FUNC,(int)request_nelmts);
 #endif
@@ -2040,7 +2037,6 @@ H5D_write(H5D_t *dataset, const H5T_t *mem_type, const H5S_t *mem_space,
     size_t		dst_type_size;	    /*size of destination type*/
     hsize_t		target_size;		/*desired buffer size	*/
     hsize_t		request_nelmts;		/*requested strip mine	*/
-    size_t		min_elem_out=1;     /*Minimum # of elements to output*/
     H5T_bkg_t	need_bkg;		    /*type of background buf*/
     H5S_t		*free_this_space=NULL;	/*data space to free	*/
     hbool_t     must_convert;       /*have to xfer the slow way*/
@@ -2160,7 +2156,7 @@ H5D_write(H5D_t *dataset, const H5T_t *mem_type, const H5S_t *mem_space,
 	}
     }
 #ifdef QAK
-    printf("%s: after H5T_find, tpath=%p, tpath->name=%s\n",FUNC,tpath,tpath->name);
+    printf("%s: check 0.6, after H5T_find, tpath=%p, tpath->name=%s\n",FUNC,tpath,tpath->name);
 #endif /* QAK */
     if (NULL==(sconv=H5S_find(mem_space, file_space))) {
 	HGOTO_ERROR (H5E_DATASET, H5E_UNSUPPORTED, FAIL,
@@ -2188,6 +2184,10 @@ H5D_write(H5D_t *dataset, const H5T_t *mem_type, const H5S_t *mem_space,
      * If there is no type conversion then try writing directly from
      * application buffer to file.
      */
+#ifdef QAK
+    printf("%s: check 0.7, H5T_IS_NOOP(path)=%d, sconv->write=%p\n", FUNC,
+	   (int)H5T_IS_NOOP(tpath), sconv->write);
+#endif /* QAK */
     if (H5T_IS_NOOP(tpath) && sconv->write) {
 #ifdef H5S_DEBUG
 	H5_timer_begin(&timer);
@@ -2251,15 +2251,15 @@ H5D_write(H5D_t *dataset, const H5T_t *mem_type, const H5S_t *mem_space,
     /*
      * This is the general case.  Figure out the strip mine size.
      */
-    if ((sconv->f->init)(&(dataset->layout), file_space, &file_iter, &min_elem_out)<0) {
+    if ((sconv->f->init)(&(dataset->layout), file_space, &file_iter)<0) {
         HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, FAIL,
 		     "unable to initialize file selection information");
     } 
-    if ((sconv->m->init)(&(dataset->layout), mem_space, &mem_iter, &min_elem_out)<0) {
+    if ((sconv->m->init)(&(dataset->layout), mem_space, &mem_iter)<0) {
         HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, FAIL,
 		     "unable to initialize memory selection information");
     } 
-    if ((sconv->f->init)(&(dataset->layout), file_space, &bkg_iter, &min_elem_out)<0) {
+    if ((sconv->f->init)(&(dataset->layout), file_space, &bkg_iter)<0) {
         HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, FAIL,
 		     "unable to initialize memory selection information");
     }
@@ -2267,18 +2267,18 @@ H5D_write(H5D_t *dataset, const H5T_t *mem_type, const H5S_t *mem_space,
     src_type_size = H5T_get_size(mem_type);
     dst_type_size = H5T_get_size(dataset->type);
     target_size = xfer_parms->buf_size;
+#ifdef QAK
+printf("%s: check 2.0, src_type_size=%d, dst_type_size=%d, target_size=%d\n",FUNC,(int)src_type_size,(int)dst_type_size,(int)target_size);
+#endif /* QAK */
     request_nelmts = target_size / MAX (src_type_size, dst_type_size);
 
-    /* Adjust to the min. # of elements to output */
-    request_nelmts = (request_nelmts/min_elem_out)*min_elem_out;
+#ifdef QAK
+    printf("%s: check 3.0, request_nelmts=%d, tpath->cdata.need_bkg=%d\n",FUNC,(int)request_nelmts,(int)tpath->cdata.need_bkg);
+#endif
     if (request_nelmts<=0) {
         HGOTO_ERROR (H5E_DATASET, H5E_CANTINIT, FAIL,
 		     "temporary buffer max size is too small");
     }
-    
-#ifdef QAK
-    printf("%s: check 3.0, request_nelmts=%d, tpath->cdata.need_bkg=%d\n",FUNC,(int)request_nelmts,(int)tpath->cdata.need_bkg);
-#endif
 
     /*
      * Get a temporary buffer for type conversion unless the app has already