Merge pull request GraphChi#1 from NoelM/fix_warnings

fix some warnings

Author: NoelM

src/api/functional/functional_bulksync.hpp

@@ -57,10 +57,10 @@ namespace graphchi {
 
         KERNEL kernel;
 
-        VT cumval;
+        VT cumval = {};
 
         vertex_info vinfo;
-        graphchi_context * gcontext;
+        graphchi_context * gcontext = nullptr;
 
         functional_vertex_unweighted_bulksync() : graphchi_vertex<VT, ET> () {}
 

src/api/functional/functional_defs.hpp

@@ -34,9 +34,9 @@
 namespace graphchi {
 
     struct vertex_info {
-        vid_t vertexid;
-        int indegree;
-        int outdegree;
+        vid_t vertexid = 0;
+        int indegree = 0;
+        int outdegree = 0;
     };
 
     /* Special sparse locking */

src/api/graph_objects.hpp

@@ -146,28 +146,28 @@ namespace graphchi {
     class internal_graphchi_vertex {
 
     public:   // Todo, use friend
-        volatile int inc;
-        volatile int outc;
+        volatile int inc = 0;
+        volatile int outc = 0;
 
-        vid_t vertexid;
+        vid_t vertexid = 0;
 
     protected:
-        graphchi_edge<EdgeDataType> * inedges_ptr;
-        graphchi_edge<EdgeDataType> * outedges_ptr;
+        graphchi_edge<EdgeDataType> * inedges_ptr = nullptr;
+        graphchi_edge<EdgeDataType> * outedges_ptr = nullptr;
 
 
     public:
-        bool modified;
-        VertexDataType * dataptr;
+        bool modified = false;
+        VertexDataType * dataptr = nullptr;
 
 
         /* Accessed directly by the engine */
-        bool scheduled;
-        bool parallel_safe;
+        bool scheduled = false;
+        bool parallel_safe = true;
 
 #ifdef SUPPORT_DELETIONS
-        int deleted_inc;
-        int deleted_outc;
+        int deleted_inc = 0;
+        int deleted_outc = 0;
 #endif
 
 
@@ -184,16 +184,6 @@ namespace graphchi {
                                  int indeg, 
                                  int outdeg) : 
                             vertexid(_id), inedges_ptr(iptr), outedges_ptr(optr) {
-            inc = 0;
-            outc = 0;
-            scheduled = false;
-            modified = false;
-            parallel_safe = true;
-            dataptr = NULL;
-#ifdef SUPPORT_DELETIONS
-            deleted_inc = 0;
-            deleted_outc = 0;
-#endif
         }
 
         virtual ~internal_graphchi_vertex() {}

src/preprocessing/sharder.hpp

@@ -691,7 +691,7 @@ namespace graphchi {
 
             vid_t curvid=0;
 #ifdef DYNAMICEDATA
-            vid_t lastdst = 0xffffffffffffffff; // 64bits
+            vid_t lastdst = std::numeric_limits<vid_t>::max();
             int jumpover = 0;
             size_t num_uniq_edges = 0;
             size_t last_edge_count = 0;
@@ -1089,7 +1089,7 @@ namespace graphchi {
                     std::vector< graphchi_vertex<vid_t, dummy_t> > vertices(nvertices, graphchi_vertex<vid_t, dummy_t>()); // preallocate
 
 
-                    for(int i=0; i < nvertices; i++) {
+                    for(vid_t i=0; i < nvertices; i++) {
                         vertices[i] = graphchi_vertex<vid_t, dummy_t>(subinterval_st + i, NULL, NULL, 0, 0);
                         vertices[i].scheduled =  true;
                     }

src/shards/slidingshard.hpp

@@ -278,7 +278,7 @@ namespace graphchi {
             assert(closest_vid>=0);
             indexentry closest_offset = lowerbd_iter->second;
             assert(closest_vid <= v);
-            if (closest_vid > curvid) {   /* Note: this will fail if we have over 2B vertices! */
+            if (closest_vid > curvid) {
                 logstream(LOG_DEBUG)
                 << "Sliding shard, start: " << range_st << " moved to: " << closest_vid << " " << closest_offset.adjoffset << ", asked for : " << v << " was in: curvid= " << curvid  << " " << adjoffset << std::endl;
 
@@ -406,7 +406,8 @@ namespace graphchi {
             vid_t lastrec = start;
             window_start_edataoffset = edataoffset;
 
-            for(int i=((int)curvid) - ((int)start); i<nvecs; i++) {
+            assert(curvid >= start);
+            for(vid_t i=curvid - start; i<nvecs; i++) {
                 if (adjoffset >= adjfilesize) break;
 
                 // TODO: skip unscheduled vertices.