cleanup merge_some_files error path [t:2642]

git-svn-id: file:///svn/toku/tokudb@20533 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/brtloader.c

@@ -121,17 +121,18 @@ static void cleanup_big_buffer(struct file_info *file) {
 }
 
 int brtloader_init_file_infos (struct file_infos *fi) {
-    int result = 0;
     int r = toku_pthread_mutex_init(&fi->lock, NULL); resource_assert(r == 0);
     fi->n_files = 0;
     fi->n_files_limit = 1;
     fi->n_files_open = 0;
     fi->n_files_extant = 0;
     MALLOC_N(fi->n_files_limit, fi->file_infos);
-    if (fi->file_infos == NULL) {
-	result = errno;
-    }
+    if (fi->file_infos) return 0;
+    else {
+	int result = errno;
+        toku_pthread_mutex_destroy(&fi->lock); // lazy no error check and maybe done elsewhere
         return result;
+    }
 }
 
 void brtloader_fi_destroy (struct file_infos *fi, BOOL is_error)
@@ -391,6 +392,9 @@ int toku_brt_loader_internal_init (/* out */ BRTLOADER *blp,
     BL_TRACE(blt_calibrate_done);
 #endif
 
+    bl->panic = FALSE;
+    bl->panic_errno = 0;
+
     bl->generate_row_for_put = g;
     bl->cachetable = cachetable;
     if (bl->cachetable)
@@ -461,6 +465,8 @@ int toku_brt_loader_internal_init (/* out */ BRTLOADER *blp,
         if (r != 0) { toku_brtloader_internal_destroy(bl, TRUE); return r; }
     }
 
+    bl->extractor_live = TRUE;
+
     *blp = bl;
 
     return 0;
@@ -498,14 +504,12 @@ int toku_brt_loader_open (/* out */ BRTLOADER *blp,
 					      bt_compare_functions,
 					      temp_file_template,
 					      load_lsn);
-	if (r != 0) result = r;
+	if (r!=0) result = r;
     }
-    if (result == 0) {
+    if (result==0) {
 	BRTLOADER bl = *blp;
         int r = toku_pthread_create(&bl->extractor_thread, NULL, extractor_thread, (void*)bl); 
-        if (r == 0) {
-            bl->extractor_live = TRUE;
-        } else { 
+        if (r!=0) { 
 	    result = r;
             toku_pthread_mutex_destroy(&bl->mutex);
             toku_brtloader_internal_destroy(bl, TRUE);
@@ -515,10 +519,17 @@ int toku_brt_loader_open (/* out */ BRTLOADER *blp,
     return result;
 }
 
-static void brt_loader_set_panic(BRTLOADER bl, int error, BOOL callback) {
-    int r = brt_loader_set_error(&bl->error_callback, error, NULL, 0, NULL, NULL);
-    if (r == 0 && callback)
-        brt_loader_call_error_function(&bl->error_callback);
+static void brt_loader_set_panic(BRTLOADER bl, int error) {
+    int r = toku_pthread_mutex_lock(&bl->mutex); resource_assert(r == 0);
+    BOOL is_panic = bl->panic;
+    if (!is_panic) {
+        bl->panic = TRUE;
+        bl->panic_errno = error;
+    }
+    r = toku_pthread_mutex_unlock(&bl->mutex); resource_assert(r == 0);
+    if (!is_panic) {
+        brt_loader_set_error(&bl->error_callback, error, NULL, 0, NULL, NULL);
+    }
 }
 
 // One of the tests uses this.
@@ -866,7 +877,7 @@ static void* extractor_thread (void *blv) {
 	{
 	    r = process_primary_rows(bl, primary_rowset);
             if (r)
-                brt_loader_set_panic(bl, r, FALSE);
+                brt_loader_set_panic(bl, r);
 	}
     }
 
@@ -874,7 +885,7 @@ static void* extractor_thread (void *blv) {
     if (r == 0) {
 	r = finish_primary_rows(bl); 
 	if (r) 
-	    brt_loader_set_panic(bl, r, FALSE);
+	    brt_loader_set_panic(bl, r);
 	
     }
     BL_TRACE(blt_extractor);
@@ -1084,7 +1095,7 @@ int toku_brt_loader_put (BRTLOADER bl, DBT *key, DBT *val)
  * Return value: 0 on success, an error number otherwise.
  */
 {
-    if (brt_loader_get_error(&bl->error_callback)) 
+    if (bl->panic || brt_loader_get_error(&bl->error_callback)) 
         return EINVAL; // previous panic
     bl->n_rows++;
 //    return loader_write_row(key, val, bl->fprimary_rows, &bl->fprimary_offset, bl);
@@ -1466,16 +1477,18 @@ int toku_merge_some_files_using_dbufio (const BOOL to_q, FIDX dest_data, QUEUE q
     }
 
     pqueue_t      *pq;
-    pqueue_node_t *pq_nodes = (pqueue_node_t *)toku_malloc(n_sources * sizeof(pqueue_node_t));
+    pqueue_node_t *pq_nodes = (pqueue_node_t *)toku_malloc(n_sources * sizeof(pqueue_node_t)); // freed in cleanup
     invariant(pq_nodes != NULL);
 
     {
 	int r = pqueue_init(&pq, n_sources, which_db, dest_db, compare, &bl->error_callback);
         lazy_assert(r == 0);
-	if (r) return r;
+        result = r;
     }
 
     u_int64_t n_rows = 0;
+    if ( result == 0 ) {
+
         // load pqueue with first value from each source
         for (int i=0; i<n_sources; i++) {
             BL_TRACE_QUIET(blt_do_i);
@@ -1483,7 +1496,10 @@ int toku_merge_some_files_using_dbufio (const BOOL to_q, FIDX dest_data, QUEUE q
             BL_TRACE_QUIET(blt_read_row);
             if (r==EOF) continue; // if the file is empty, don't initialize the pqueue.
             lazy_assert(r == 0);
-	if (r!=0) return r;
+            if (r!=0) { 
+                result = r;
+                break;
+            }
 
             pq_nodes[i].key = &keys[i];
             pq_nodes[i].val = &vals[i];
@@ -1501,13 +1517,15 @@ int toku_merge_some_files_using_dbufio (const BOOL to_q, FIDX dest_data, QUEUE q
             n_rows += bl->file_infos.file_infos[srcs_fidxs[i].idx].n_rows;
             { int r2 = toku_pthread_mutex_unlock(&bl->file_infos.lock); resource_assert(r2==0); }
         }
+    }
     u_int64_t n_rows_done = 0;
 
     struct rowset *output_rowset = NULL;
     if (result==0 && to_q) {
-	XMALLOC(output_rowset);
+	XMALLOC(output_rowset); // freed in cleanup
 	int r = init_rowset(output_rowset, memory_per_rowset(bl));
 	lazy_assert(r==0);
+        if (r!=0) result = r;
     }
     
     //printf(" n_rows=%ld\n", n_rows);
@@ -1531,18 +1549,28 @@ int toku_merge_some_files_using_dbufio (const BOOL to_q, FIDX dest_data, QUEUE q
 		r = queue_enq(q, (void*)output_rowset, 1, NULL);
 		BL_TRACE(blt_fractal_enq);
 		lazy_assert(r==0);
-		MALLOC(output_rowset);
-		assert(output_rowset);
+                XMALLOC(output_rowset); // freed in cleanup
 		r = init_rowset(output_rowset, memory_per_rowset(bl));
 		lazy_assert(r==0);
+                if (r!=0) {        
+                    result = r;
+                    break;
+                }
 	    }
 	    r = add_row(output_rowset, &keys[mini], &vals[mini]);
             lazy_assert(r == 0);
+            if (r!=0) {
+                return = r;
+                break;
+            }
 	} else {
             // write it to the dest file
 	    r = loader_write_row(&keys[mini], &vals[mini], dest_data, dest_stream, &dataoff[mini], bl);
             lazy_assert(r==0);
-	    if (r!=0) return r;
+            if (r!=0) {
+                return = r;
+                break;
+            }
 	}
         
 	{
@@ -1558,7 +1586,8 @@ int toku_merge_some_files_using_dbufio (const BOOL to_q, FIDX dest_data, QUEUE q
 		} else {
 		    printf("%s:%d returning\n", __FILE__, __LINE__);
                     lazy_assert(0);
-		    return r;
+                    result = r;
+                    break;
 		}
 	    }
             else {
@@ -1595,7 +1624,10 @@ int toku_merge_some_files_using_dbufio (const BOOL to_q, FIDX dest_data, QUEUE q
 	BL_TRACE(blt_do_i);
 	int r = queue_enq(q, (void*)output_rowset, 1, NULL);
 	BL_TRACE(blt_fractal_enq);
-	assert(r==0); // 	if (r!=0) result = r;
+	lazy_assert(r==0); // 	
+        if (r!=0) 
+            result = r;
+        else 
             output_rowset = NULL;
     }
 
@@ -1773,8 +1805,7 @@ int merge_files (struct merge_fileset *fs,
 
 	if (result!=0) break;
     }
-    if (result) 
-        brt_loader_set_panic(bl, result, TRUE);
+    if (result) brt_loader_set_panic(bl, result);
     {
 	int r = queue_eof(output_q);
 	if (r!=0 && result==0) result = r;
@@ -2143,7 +2174,7 @@ static int toku_loader_write_brt_from_q (BRTLOADER bl,
     seek_align(&out);
     int64_t lblock;
     result = allocate_block(&out, &lblock);
-    invariant(result == 0); // can not fail since the first block is reserved above
+    lazy_assert(result == 0); // can not fail since translations reserved above
     struct leaf_buf *lbuf = start_leaf(&out, descriptor, lblock);
     struct subtree_estimates est = zero_estimates;
     est.exact = TRUE;
@@ -2160,7 +2191,7 @@ static int toku_loader_write_brt_from_q (BRTLOADER bl,
 	    BL_TRACE(blt_fractal_deq);
 	    if (rr == EOF) break;
 	    if (rr != 0) {
-                brt_loader_set_panic(bl, rr, TRUE); // error after cilk sync
+                brt_loader_set_panic(bl, rr); // error after cilk sync
                 break;
             }
 	}
@@ -2196,9 +2227,8 @@ static int toku_loader_write_brt_from_q (BRTLOADER bl,
 		n_pivots++;
 
 		if ((r = bl_write_dbt(&key, pivots_stream, NULL, bl))) {
-		    brt_loader_set_panic(bl, r, TRUE); // error after cilk sync
-                    if (result == 0) 
-                        result = r;
+		    brt_loader_set_panic(bl, r); // error after cilk sync
+                    if (result == 0) result = r;
 		    break;
 		}
 	    
@@ -2207,9 +2237,8 @@ static int toku_loader_write_brt_from_q (BRTLOADER bl,
 
 		r = allocate_block(&out, &lblock);
                 if (r != 0) {
-                    brt_loader_set_panic(bl, r, TRUE);
-                    if (result == 0) 
-                        result = r;
+                    brt_loader_set_panic(bl, r);
+                    if (result == 0) result = r;
                     break;
                 }
 		lbuf = start_leaf(&out, descriptor, lblock);
@@ -2237,9 +2266,8 @@ static int toku_loader_write_brt_from_q (BRTLOADER bl,
 
     cilk_sync;
 
-    if (result == 0) {
-        result = brt_loader_get_error(&bl->error_callback); // if there were any prior errors then exit
-        if (result) goto error;
+    if (bl->panic) { // if there were any prior errors then exit
+        result = bl->panic_errno; goto error;
     }
 
     // We haven't paniced, so the sum should add up.
@@ -2313,6 +2341,8 @@ static int toku_loader_write_brt_from_q (BRTLOADER bl,
         result = errno; goto error; 
     }
 
+    // Do we need to pay attention to user_said_stop?  Or should the guy at the other end of the queue pay attention and send in an EOF.
+
  error: 
     {
         int rr = toku_os_close(fd);
@@ -2549,7 +2579,11 @@ int toku_brt_loader_abort(BRTLOADER bl, BOOL is_error)
 }
 
 int toku_brt_loader_get_error(BRTLOADER bl, int *error) {
-    *error = brt_loader_get_error(&bl->error_callback);
+    *error = 0;
+    if (bl->panic)
+        *error = bl->panic_errno;
+    else if (bl->error_callback.error)
+        *error = bl->error_callback.error;
     return 0;
 }
 
@@ -2696,10 +2730,12 @@ static void finish_leafnode (struct dbout *out, struct leaf_buf *lbuf, int progr
     //printf("Nodewrite %d (%.1f%%):", progress_allocation, 100.0*progress_allocation/PROGRESS_MAX);
     if (result == 0) {
         result = update_progress(progress_allocation, bl, "wrote node");
+        if (result != 0) 
+            bl->user_said_stop = result;
     }
 
     if (result)
-        brt_loader_set_panic(bl, result, TRUE);
+        brt_loader_set_panic(bl, result);
 }
 
 CILK_END
@@ -2952,7 +2988,7 @@ static void write_nonleaf_node (BRTLOADER bl, struct dbout *out, int64_t blocknu
     blocknum_of_new_node = blocknum_of_new_node;
 
     if (result != 0)
-        brt_loader_set_panic(bl, result, TRUE);
+        brt_loader_set_panic(bl, result);
 }
 
 static int write_nonleaves (BRTLOADER bl, FIDX pivots_fidx, struct dbout *out, struct subtrees_info *sts, const struct descriptor *descriptor) {
@@ -3054,8 +3090,8 @@ static int write_nonleaves (BRTLOADER bl, FIDX pivots_fidx, struct dbout *out, s
 
         cilk_sync;
 
-        if (result == 0) // pick up write_nonleaf_node errors
-            result = brt_loader_get_error(&bl->error_callback);
+        if (result == 0 && bl->panic) // pick up write_nonleaf_node errors
+            result = bl->panic_errno;
 
 	// Now set things up for the next iteration.
 	int r = brtloader_fi_close(&bl->file_infos, pivots_fidx); if (r != 0 && result == 0) result = r;