Addresses #284

Add accessor function for allow_overlaps in range trees.

git-svn-id: file:///svn/tokudb@1824 c7de825b-a66e-492c-adef-691d508d4ae1

src/range_tree/linear.c

@@ -245,6 +245,8 @@ int toku_rt_successor (toku_range_tree* tree, void* point, toku_range* succ,
     return 0;
 }
 
-/*
-\marginpar{add more \\marginpar\'s}
-*/
+int toku_rt_get_allow_overlaps(toku_range_tree* tree, BOOL* allowed) {
+    if (!tree || !allowed)                               return EINVAL;
+    *allowed = tree->allow_overlaps;
+    return 0;
+}

src/range_tree/rangetree.h

@@ -69,6 +69,17 @@ struct __toku_range_tree_internal {
 /*  These lines will remain. */
 typedef struct __toku_range_tree_internal toku_range_tree;
 
+/**
+    Gets whether the range tree allows overlapping ranges.
+    
+    \param tree     The range tree.
+    \param allowed  Returns whether overlaps are allowed.
+
+    \return
+    - 0:            Success.
+    - EINVAL:       If any pointer argument is NULL. */
+int toku_rt_get_allow_overlaps(toku_range_tree* tree, BOOL* allowed);
+
 /**
     Creates a range tree.
 
@@ -86,7 +97,7 @@ typedef struct __toku_range_tree_internal toku_range_tree;
     \return
     - 0:              Success.
     - EINVAL:         If any pointer argument is NULL.
-    - Other exit codes may be forwarded from underlying system calls.  */
+    - Other exit codes may be forwarded from underlying system calls. */
 int toku_rt_create(toku_range_tree** ptree, int (*end_cmp)(void*,void*), 
                    int (*data_cmp)(void*,void*), BOOL allow_overlaps,
                    void* (*user_malloc) (size_t),