Add .owner_hash_value to shared/weak_ptr, hash_value, std::hash/equal_to specializations for weak_ptr

2020-06-04 20:40:57 +03:00
parent bc677e9098
commit 5dd84ea389
8 changed files with 308 additions and 31 deletions
@@ -0,0 +1,85 @@
+// Copyright 2020 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/shared_ptr.hpp>
+#include <boost/weak_ptr.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+int main()
+{
+    {
+        boost::shared_ptr<int> p1( new int );
+        boost::shared_ptr<int> p2( p1 );
+
+        BOOST_TEST_EQ( p1.owner_hash_value(), p2.owner_hash_value() );
+
+        boost::shared_ptr<int> p3( new int );
+
+        BOOST_TEST_NE( p1.owner_hash_value(), p3.owner_hash_value() );
+
+        boost::shared_ptr<int> p4;
+        boost::shared_ptr<int> p5;
+
+        BOOST_TEST_EQ( p4.owner_hash_value(), p5.owner_hash_value() );
+        BOOST_TEST_NE( p4.owner_hash_value(), p3.owner_hash_value() );
+
+        boost::shared_ptr<int> p6( static_cast<int*>(0) );
+
+        BOOST_TEST_NE( p4.owner_hash_value(), p6.owner_hash_value() );
+
+        boost::shared_ptr<void> p7( p1 );
+
+        BOOST_TEST_EQ( p1.owner_hash_value(), p7.owner_hash_value() );
+
+        boost::shared_ptr<void> p8;
+
+        BOOST_TEST_NE( p1.owner_hash_value(), p8.owner_hash_value() );
+        BOOST_TEST_EQ( p4.owner_hash_value(), p8.owner_hash_value() );
+
+        boost::weak_ptr<int> q1( p1 );
+
+        BOOST_TEST_EQ( p1.owner_hash_value(), q1.owner_hash_value() );
+
+        boost::weak_ptr<int> q2( p1 );
+
+        BOOST_TEST_EQ( q1.owner_hash_value(), q2.owner_hash_value() );
+
+        boost::weak_ptr<int> q3( p3 );
+
+        BOOST_TEST_NE( p1.owner_hash_value(), q3.owner_hash_value() );
+        BOOST_TEST_NE( q1.owner_hash_value(), q3.owner_hash_value() );
+
+        boost::weak_ptr<int> q4;
+
+        BOOST_TEST_EQ( p4.owner_hash_value(), q4.owner_hash_value() );
+        BOOST_TEST_NE( q1.owner_hash_value(), q4.owner_hash_value() );
+
+        boost::weak_ptr<void> q5;
+
+        BOOST_TEST_EQ( q4.owner_hash_value(), q5.owner_hash_value() );
+
+        boost::weak_ptr<void> q7( p7 );
+
+        BOOST_TEST_EQ( p1.owner_hash_value(), q7.owner_hash_value() );
+        BOOST_TEST_EQ( q1.owner_hash_value(), q7.owner_hash_value() );
+
+        p1.reset();
+        p2.reset();
+        p3.reset();
+        p7.reset();
+
+        BOOST_TEST( q1.expired() );
+        BOOST_TEST( q2.expired() );
+        BOOST_TEST( q3.expired() );
+        BOOST_TEST( q7.expired() );
+
+        BOOST_TEST_EQ( q1.owner_hash_value(), q2.owner_hash_value() );
+        BOOST_TEST_EQ( q1.owner_hash_value(), q7.owner_hash_value() );
+
+        BOOST_TEST_NE( q1.owner_hash_value(), q3.owner_hash_value() );
+        BOOST_TEST_NE( q1.owner_hash_value(), q4.owner_hash_value() );
+    }
+
+    return boost::report_errors();
+}