Add a test case

include/metall/container/fallback_allocator.hpp

@@ -12,9 +12,9 @@
 
 namespace metall::container {
 
-/// \brief A STL compatible allocator which fallbacks to a heap allocator (e.g.,
-/// malloc()) if its constructor receives no argument to construct the stateful
-/// allocator instance.
+/// \brief A Metall STL compatible allocator which fallbacks to a heap allocator
+/// (e.g., malloc()) if its constructor receives no argument to construct the
+/// stateful allocator (Metall's normal STL compatible allocator) instance.
 /// \tparam StatefulAllocator The stateful allocator type. It must not be
 /// default constructible.
 template <typename StatefulAllocator>
@@ -69,7 +69,7 @@ class fallback_allocator_adaptor {
  fallback_allocator_adaptor(
  fallback_allocator_adaptor<stateful_allocator_type2>
  allocator_instance) noexcept
- : m_stateful_allocator(allocator_instance.stateful_allocator()) {}
+ : m_stateful_allocator(allocator_instance.get_stateful_allocator()) {}
 
  /// \brief Construct a new instance using an instance of any
  /// stateful_allocator.
@@ -202,10 +202,10 @@ class fallback_allocator_adaptor {
  // ---------- This class's unique public functions ---------- //
 
  /// \brief Returns a reference to the stateful allocator.
- stateful_allocator_type &stateful_allocator() { return m_stateful_allocator; }
+ stateful_allocator_type &get_stateful_allocator() { return m_stateful_allocator; }
 
  /// \brief Returns a const reference to the stateful allocator.
- const stateful_allocator_type &stateful_allocator() const {
+ const stateful_allocator_type &get_stateful_allocator() const {
  return m_stateful_allocator;
  }
 
@@ -259,7 +259,7 @@ inline bool operator==(
  const fallback_allocator_adaptor<stateful_allocator_type> &rhd,
  const fallback_allocator_adaptor<stateful_allocator_type> &lhd) {
  // Return true if they point to the same manager kernel
- return rhd.stateful_allocator() == lhd.stateful_allocator();
+ return rhd.get_stateful_allocator() == lhd.get_stateful_allocator();
 }
 
 template <typename stateful_allocator_type>

test/container/fallback_allocator_test.cpp

@@ -107,6 +107,13 @@ TEST(FallbackAllocatorAdaptorTest, Types) {
  alloc);
  GTEST_ASSERT_EQ(alloc, a2);
  }
+
+ {
+ metall::manager manager(metall::create_only, dir_path(),
+ 1UL << 27UL);
+ auto allocator = fb_alloc_type<int>(manager.get_allocator<int>());
+ ASSERT_EQ(allocator.get_stateful_allocator(), manager.get_allocator<int>());
+ }
 }
 
 TEST(FallbackAllocatorAdaptorTest, Availability) {