Smarter computation of the required space for the struct.

This commit was SVN r1090.

src/datatype/dt_create_struct.c

@@ -5,40 +5,49 @@
 int lam_ddt_create_struct( int count, int* pBlockLength, long* pDisp,
                            dt_desc_t** pTypes, dt_desc_t** newType )
 {
-   int i;
-   long disp, endto, lastExtent, lastDisp;
-   int lastBlock;
-   dt_desc_t *pdt, *lastType;
-   /* if we compute the total number of elements before we can
-    * avoid increasing the size of the desc array often.
-    */
-   for( disp = 0, i = 0; i < count; i++ ) {
-      disp += pTypes[i]->desc.used;
-      if( pBlockLength[i] != 1 ) disp += 2;
-   }
-   lastType = pTypes[0];
-   lastBlock = pBlockLength[0];
-   lastExtent = lastType->ub - lastType->lb;
-   lastDisp = pDisp[0];
-   endto = pDisp[0] + lastExtent * lastBlock;
+    int i;
+    long disp, endto, lastExtent, lastDisp;
+    int lastBlock;
+    dt_desc_t *pdt, *lastType;
+    /* if we compute the total number of elements before we can
+     * avoid increasing the size of the desc array often.
+     */
+    for( lastType = pTypes[0], lastBlock = 0, disp = 0, i = 0; i < count; i++ ) {
+        if( lastType == pTypes[i] ) {
+            lastBlock += pBlockLength[i];
+        } else {
+            disp += lastType->desc.used;
+            if( lastBlock != 1 ) disp += 2;
+            lastType = pTypes[i];
+            lastBlock = pBlockLength[i];
+        }
+    }
+    disp += lastType->desc.used;
+    if( lastBlock != 1 ) disp += 2;
 
-   pdt = lam_ddt_create( disp );
+    lastType = pTypes[0];
+    lastBlock = pBlockLength[0];
+    lastExtent = lastType->ub - lastType->lb;
+    lastDisp = pDisp[0];
+    endto = pDisp[0] + lastExtent * lastBlock;
 
-   for( i = 1; i < count; i++ ) {
-      if( (pTypes[i] == lastType) && (pDisp[i] == endto) ) {
-         lastBlock += pBlockLength[i];
-         endto = lastDisp + lastBlock * lastExtent;
-      } else {
-         lam_ddt_add( pdt, lastType, lastBlock, lastDisp, lastExtent );
-         lastType = pTypes[i];
-         lastExtent = lastType->ub - lastType->lb;
-         lastBlock = pBlockLength[i];
-         lastDisp = pDisp[i];
-         endto = lastDisp + lastExtent * lastBlock;
-      }
-   }
-   lam_ddt_add( pdt, lastType, lastBlock, lastDisp, lastExtent );
+    pdt = lam_ddt_create( disp );
 
-   *newType = pdt;
-   return 0;
+    for( i = 1; i < count; i++ ) {
+        if( (pTypes[i] == lastType) && (pDisp[i] == endto) ) {
+            lastBlock += pBlockLength[i];
+            endto = lastDisp + lastBlock * lastExtent;
+        } else {
+            lam_ddt_add( pdt, lastType, lastBlock, lastDisp, lastExtent );
+            lastType = pTypes[i];
+            lastExtent = lastType->ub - lastType->lb;
+            lastBlock = pBlockLength[i];
+            lastDisp = pDisp[i];
+            endto = lastDisp + lastExtent * lastBlock;
+        }
+    }
+    lam_ddt_add( pdt, lastType, lastBlock, lastDisp, lastExtent );
+
+    *newType = pdt;
+    return 0;
 }