standardize behavior of btl_alloc, if the size is larger than the max send

size, btl_alloc returns NULL. 

This commit was SVN r9114.

ompi/mca/btl/gm/btl_gm.c

@@ -163,14 +163,12 @@ mca_btl_base_descriptor_t* mca_btl_gm_alloc(
     
     if(size <= btl->btl_eager_limit) { 
         MCA_BTL_GM_FRAG_ALLOC_EAGER(gm_btl, frag, rc); 
-        frag->segment.seg_len = 
+        frag->segment.seg_len = size;
-            size <= btl->btl_eager_limit ? 
+    } else if(size <=  btl->btl_max_send_size) { 
-            size : btl->btl_eager_limit ; 
-    } else { 
         MCA_BTL_GM_FRAG_ALLOC_MAX(gm_btl, frag, rc); 
-        frag->segment.seg_len = 
+        frag->segment.seg_len = size; 
-            size <= btl->btl_max_send_size ? 
+    } else { 
-            size : btl->btl_max_send_size ; 
+        return NULL;
     }
     
     frag->base.des_src = &frag->segment;

ompi/mca/btl/mvapi/btl_mvapi.c

@@ -196,15 +196,13 @@ mca_btl_base_descriptor_t* mca_btl_mvapi_alloc(
     if(size <= mca_btl_mvapi_component.eager_limit){ 
         MCA_BTL_IB_FRAG_ALLOC_EAGER(btl, frag, rc); 
         if(NULL == frag) return NULL;
-        frag->segment.seg_len = 
+        frag->segment.seg_len = size;
-            size <= mca_btl_mvapi_component.eager_limit ? 
+    } else if (size <= mca_btl_mvapi_component.max_send_size) { 
-            size: mca_btl_mvapi_component.eager_limit ; 
-    } else { 
         MCA_BTL_IB_FRAG_ALLOC_MAX(btl, frag, rc); 
         if(NULL == frag) return NULL;
-        frag->segment.seg_len = 
+        frag->segment.seg_len = size;
-            size <= mca_btl_mvapi_component.max_send_size ? 
+    } else { 
-            size: mca_btl_mvapi_component.max_send_size ; 
+        return NULL;
     }
     
     frag->segment.seg_len = size <= mvapi_btl->super.btl_eager_limit ? size : mvapi_btl->super.btl_eager_limit;  

ompi/mca/btl/openib/btl_openib.c

@@ -192,14 +192,12 @@ mca_btl_base_descriptor_t* mca_btl_openib_alloc(
     
     if(size <= mca_btl_openib_component.eager_limit){ 
         MCA_BTL_IB_FRAG_ALLOC_EAGER(btl, frag, rc); 
-        frag->segment.seg_len = 
+        frag->segment.seg_len = size; 
-            size <= mca_btl_openib_component.eager_limit ? 
+    } else if(size <= mca_btl_openib_component.max_send_size) { 
-            size: mca_btl_openib_component.eager_limit ; 
-    } else { 
         MCA_BTL_IB_FRAG_ALLOC_MAX(btl, frag, rc); 
-        frag->segment.seg_len = 
+        frag->segment.seg_len = size;
-            size <= mca_btl_openib_component.max_send_size ? 
+    } else { 
-            size: mca_btl_openib_component.max_send_size ; 
+        return NULL;
     }
     
     frag->segment.seg_len = size <= openib_btl->super.btl_eager_limit ? size : openib_btl->super.btl_eager_limit;  

ompi/mca/btl/self/btl_self.c

@@ -153,12 +153,13 @@ extern mca_btl_base_descriptor_t* mca_btl_self_alloc(
     if(size <= mca_btl_self.btl_eager_limit) {
         MCA_BTL_SELF_FRAG_ALLOC_EAGER(frag,rc);
         frag->segment.seg_len = size;
-    } else {
+    } else if (size <= btl->btl_max_send_size) {
         MCA_BTL_SELF_FRAG_ALLOC_SEND(frag,rc);
-        frag->segment.seg_len = 
+        frag->segment.seg_len = size;
-            size <= btl->btl_max_send_size ?
+    } else { 
-            size : btl->btl_max_send_size;
+        return NULL; 
     }
+    
     frag->base.des_flags = 0;
     return (mca_btl_base_descriptor_t*)frag;
 }

ompi/mca/btl/tcp/btl_tcp.c

@@ -176,12 +176,13 @@ mca_btl_base_descriptor_t* mca_btl_tcp_alloc(
     if(size <= btl->btl_eager_limit) { 
         MCA_BTL_TCP_FRAG_ALLOC_EAGER(frag, rc); 
         frag->segments[0].seg_len = size;
-    } else { 
+    } else if (size <= btl->btl_max_send_size) { 
         MCA_BTL_TCP_FRAG_ALLOC_MAX(frag, rc); 
-        frag->segments[0].seg_len = 
+        frag->segments[0].seg_len = size;
-            size <= btl->btl_max_send_size ? 
+    } else { 
-            size : btl->btl_max_send_size ; 
+        return NULL;
     }
+    
     frag->segments[0].seg_addr.pval = frag+1;
 
     frag->base.des_src = frag->segments;