Removed unused AtomicPtr::CompareAndSwap

2 files changed, 0 insertions, 20 deletions

diff --git a/src/malloc_hook-inl.h b/src/malloc_hook-inl.h
index b45a3d4..b98e920 100644
--- a/src/malloc_hook-inl.h
+++ b/src/malloc_hook-inl.h
@@ -75,14 +75,6 @@ class AtomicPtr {
   // This is a full-barrier instruction.
   PtrT Exchange(PtrT new_val);
 
-  // Atomically executes:
-  //      result = data_
-  //      if (data_ == old_val)
-  //        data_ = new_val;
-  //      return result;
-  // This is a full-barrier instruction.
-  PtrT CompareAndSwap(PtrT old_val, PtrT new_val);
-
   // Not private so that the class is an aggregate and can be
   // initialized by the linker. Don't access this directly.
   AtomicWord data_;
diff --git a/src/malloc_hook.cc b/src/malloc_hook.cc
index f60d12a..b9fa520 100644
--- a/src/malloc_hook.cc
+++ b/src/malloc_hook.cc
@@ -174,18 +174,6 @@ PtrT AtomicPtr<PtrT>::Exchange(PtrT new_val) {
   return old_val;
 }
 
-template<typename PtrT>
-PtrT AtomicPtr<PtrT>::CompareAndSwap(PtrT old_val, PtrT new_val) {
-  base::subtle::MemoryBarrier();  // Release semantics.
-  PtrT retval = reinterpret_cast<PtrT>(static_cast<AtomicWord>(
-      base::subtle::NoBarrier_CompareAndSwap(
-          &data_,
-          reinterpret_cast<AtomicWord>(old_val),
-          reinterpret_cast<AtomicWord>(new_val))));
-  base::subtle::MemoryBarrier();  // And acquire semantics.
-  return retval;
-}
-
 AtomicPtr<MallocHook::NewHook>    new_hook_ = { 0 };
 AtomicPtr<MallocHook::DeleteHook> delete_hook_ = { 0 };
 AtomicPtr<MallocHook::PreMmapHook> premmap_hook_ = { 0 };