TEST( MemoryRouter, differentAllocationMethods )
{
DefaultAllocator defaultAllocator;
// at the beginning, no memory is allocated
CPPUNIT_ASSERT_EQUAL( (ulong)0, defaultAllocator.getMemoryUsed() );
MemoryRouter& router = TSingleton< MemoryRouter >::getInstance();
void* ptr = router.alloc( 12, AM_ALIGNED_16, &defaultAllocator );
// memory was indeed allocated - but since we were allocating an aligned block,
// a larger block was allocated
CPPUNIT_ASSERT( ptr != NULL );
CPPUNIT_ASSERT( (ulong)12 < defaultAllocator.getMemoryUsed() );
// and that the returned address is aligned to a 16 byte boundary
bool isAligned = MemoryUtils::isAddressAligned( ptr );
CPPUNIT_ASSERT( isAligned );
// cleanup
router.dealloc( ptr, AM_ALIGNED_16 );
// allocated memory was correctly released - the entire amount
CPPUNIT_ASSERT_EQUAL( (ulong)0, defaultAllocator.getMemoryUsed() );
}
TEST( DefaultAllocator, threadSafety )
{
Thread thread1;
Thread thread2;
DefaultAllocator allocator;
CPPUNIT_ASSERT_EQUAL( (ulong)0, allocator.getMemoryUsed() );
MultithreadedAllocFunc allocOperator1( allocator );
MultithreadedAllocFunc allocOperator2( allocator );
thread1.start( allocOperator1 );
thread2.start( allocOperator2 );
thread1.join();
thread2.join();
CPPUNIT_ASSERT_EQUAL( (ulong)0, allocator.getMemoryUsed() );
}
TEST( MemoryRouter, objectsPlacement )
{
DefaultAllocator defaultAllocator;
MemoryRouter& router = TSingleton< MemoryRouter >::getInstance();
ulong initialAllocatedMemorySize = router.getMemoryUsed();
TestClass* obj = new ( &defaultAllocator ) TestClass();
CPPUNIT_ASSERT( obj != NULL );
// no memory was allocated in the pool internally managed by the router
CPPUNIT_ASSERT_EQUAL( (ulong)0, router.getMemoryUsed() - initialAllocatedMemorySize );
// entire memory was allocated in the specified external pool
ulong expectedSize = MemoryUtils::calcAlignedSize( (ulong)(sizeof( TestClass ) + sizeof(void*)) );
CPPUNIT_ASSERT_EQUAL( expectedSize, defaultAllocator.getMemoryUsed() );
delete obj;
CPPUNIT_ASSERT_EQUAL( (ulong)0, router.getMemoryUsed() - initialAllocatedMemorySize );
CPPUNIT_ASSERT_EQUAL( (ulong)0, defaultAllocator.getMemoryUsed() );
}
