Support gethostbyname_r_ERANGE.

[android-sdk/platform-bionic.git] / linker / linked_list.h

diff --git a/linker/linked_list.h b/linker/linked_list.h
index 4e62e208f6bca222378b2c877246b6c40f41dcf2..a72b73ccd6753cf0d7a5b25b42819efbdcabce3f 100644 (file)
--- a/linker/linked_list.h
+++ b/linker/linked_list.h
@@ -36,6 +36,12 @@ class LinkedList {
     clear();
   }
 
+  LinkedList(LinkedList&& that) {
+    this->head_ = that.head_;
+    this->tail_ = that.tail_;
+    that.head_ = that.tail_ = nullptr;
+  }
+
   void push_front(T* const element) {
     LinkedListEntry<T>* new_entry = Allocator::alloc();
     new_entry->next = head_;
@@ -75,6 +81,14 @@ class LinkedList {
     return element;
   }
 
+  T* front() const {
+    if (head_ == nullptr) {
+      return nullptr;
+    }
+
+    return head_->element;
+  }
+
   void clear() {
     while (head_ != nullptr) {
       LinkedListEntry<T>* p = head_;
@@ -86,7 +100,7 @@ class LinkedList {
   }
 
   template<typename F>
-  void for_each(F action) {
+  void for_each(F action) const {
     visit([&] (T* si) {
       action(si);
       return true;
@@ -94,7 +108,7 @@ class LinkedList {
   }
 
   template<typename F>
-  bool visit(F action) {
+  bool visit(F action) const {
     for (LinkedListEntry<T>* e = head_; e != nullptr; e = e->next) {
       if (!action(e->element)) {
         return false;
@@ -140,6 +154,12 @@ class LinkedList {
     return false;
   }
 
+  static LinkedList make_list(T* const element) {
+    LinkedList<T, Allocator> one_element_list;
+    one_element_list.push_back(element);
+    return one_element_list;
+  }
+
  private:
   LinkedListEntry<T>* head_;
   LinkedListEntry<T>* tail_;