treeentry_cmp
SPLAY_GENERATE(tree, treeentry, entry, treeentry_cmp);
static int treeentry_cmp(struct treeentry *, struct treeentry *);
SPLAY_PROTOTYPE(tree, treeentry, entry, treeentry_cmp);
SPLAY_GENERATE(_tree, treeentry, entry, treeentry_cmp);
static int treeentry_cmp(struct treeentry *, struct treeentry *);
SPLAY_PROTOTYPE(_tree, treeentry, entry, treeentry_cmp);