#i105938# Provides simplistic pool memory from a std::vector

1 files changed, 73 insertions, 0 deletions

diff --git a/o3tl/qa/test-vector_pool.cxx b/o3tl/qa/test-vector_pool.cxx
new file mode 100644
index 000000000000..4cbd1a78f0f6
--- /dev/null
+++ b/o3tl/qa/test-vector_pool.cxx
@@ -0,0 +1,73 @@
+// autogenerated file with codegen.pl
+
+#include <cppunit/simpleheader.hxx>
+
+#include <o3tl/vector_pool.hxx>
+
+using namespace ::o3tl;
+
+class vector_pool_test : public CppUnit::TestFixture
+{
+public:
+    void testPoolBasics()
+    {
+        vector_pool<int> aPool;
+
+        std::ptrdiff_t nIdx1 = aPool.alloc();
+        std::ptrdiff_t nIdx2 = aPool.alloc();
+        std::ptrdiff_t nIdx3 = aPool.alloc();
+
+        CPPUNIT_ASSERT_MESSAGE("allocator idx order 1", nIdx1 < nIdx2 );
+        CPPUNIT_ASSERT_MESSAGE("allocator idx order 2", nIdx2 < nIdx3 );
+
+        aPool.free(nIdx2);
+        aPool.free(nIdx3);
+
+        nIdx2 = aPool.alloc();
+        nIdx3 = aPool.alloc();
+
+        CPPUNIT_ASSERT_MESSAGE("allocator idx order 1 after fragmentation", nIdx1 < nIdx3 );
+        CPPUNIT_ASSERT_MESSAGE("allocator idx order 2 after fragmentation", nIdx3 < nIdx2 );
+    }
+
+    void testPoolValueSemantics()
+    {
+        vector_pool<int> aPool;
+
+        std::ptrdiff_t nIdx1 = aPool.store(0);
+        CPPUNIT_ASSERT_MESSAGE("allocator value semantics 1", aPool.get(nIdx1) == 0 );
+
+        std::ptrdiff_t nIdx2 = aPool.store(1);
+        CPPUNIT_ASSERT_MESSAGE("allocator value semantics 2", aPool.get(nIdx2) == 1 );
+
+        std::ptrdiff_t nIdx3 = aPool.store(2);
+        CPPUNIT_ASSERT_MESSAGE("allocator value semantics 3", aPool.get(nIdx3) == 2 );
+
+        aPool.free(nIdx2);
+        aPool.free(nIdx3);
+
+        nIdx2 = aPool.store(1);
+        CPPUNIT_ASSERT_MESSAGE("allocator value semantics 2 after fragmentation", aPool.get(nIdx2) == 1 );
+
+        nIdx3 = aPool.store(2);
+        CPPUNIT_ASSERT_MESSAGE("allocator value semantics 3 after fragmentation", aPool.get(nIdx3) == 2 );
+    }
+
+    // Change the following lines only, if you add, remove or rename
+    // member functions of the current class,
+    // because these macros are need by auto register mechanism.
+
+    CPPUNIT_TEST_SUITE(vector_pool_test);
+    CPPUNIT_TEST(testPoolBasics);
+    CPPUNIT_TEST(testPoolValueSemantics);
+    CPPUNIT_TEST_SUITE_END();
+};
+
+// -----------------------------------------------------------------------------
+CPPUNIT_TEST_SUITE_NAMED_REGISTRATION(vector_pool_test, "vector pool test");
+
+
+// -----------------------------------------------------------------------------
+
+// NOADDITIONAL;
+