void attach( const ValueType * const arg_ptr, AllocationTracker const & tracker )
{
typedef char const * const byte;
m_alloc_ptr = reinterpret_cast<ValueType *>(tracker.alloc_ptr());
size_t byte_offset = reinterpret_cast<byte>(arg_ptr) - reinterpret_cast<byte>(m_alloc_ptr);
const bool ok_aligned = 0 == byte_offset % sizeof(ValueType);
const size_t count = tracker.alloc_size() / sizeof(ValueType);
const bool ok_contains = (m_alloc_ptr <= arg_ptr) && (arg_ptr < (m_alloc_ptr + count));
if (ok_aligned && ok_contains) {
if (tracker.attribute() == NULL ) {
MemorySpace::texture_object_attach(
tracker
, sizeof(ValueType)
, cudaCreateChannelDesc< AliasType >()
);
}
m_obj = dynamic_cast<TextureAttribute*>(tracker.attribute())->m_tex_obj;
m_offset = arg_ptr - m_alloc_ptr;
}
else if( !ok_contains ) {
throw_runtime_exception("Error: cannot attach a texture object to a tracker which does not bound the pointer.");
}
else {
throw_runtime_exception("Error: cannot attach a texture object to an incorrectly aligned pointer.");
}
}
TEST_F( alocation_tracker, simple)
{
#if ! defined( KOKKOS_USING_EXPERIMENTAL_VIEW )
using namespace Kokkos::Impl;
{
AllocationTracker tracker;
EXPECT_FALSE( tracker.is_valid() );
}
// test ref count and label
{
int size = 100;
std::vector<AllocationTracker> trackers(size);
trackers[0] = AllocationTracker( MallocAllocator(), 128,"Test");
for (int i=0; i<size; ++i) {
trackers[i] = trackers[0];
}
EXPECT_EQ(100u, trackers[0].ref_count());
EXPECT_EQ(std::string("Test"), std::string(trackers[0].label()));
}
// test circular list
{
int num_allocs = 3000;
unsigned ref_count = 100;
std::vector<AllocationTracker> trackers(num_allocs);
for (int i=0; i<num_allocs; ++i) {
trackers[i] = AllocationTracker( MallocAllocator(), 128, "Test");
std::vector<AllocationTracker> ref_trackers(ref_count);
for (unsigned j=0; j<ref_count; ++j) {
ref_trackers[j] = trackers[i];
}
EXPECT_EQ( ref_count + 1u, trackers[i].ref_count() );
}
for (int i=0; i<num_allocs; ++i) {
EXPECT_EQ( 1u, trackers[i].ref_count() );
}
}
#endif /* #if ! defined( KOKKOS_USING_EXPERIMENTAL_VIEW ) */
}
KOKKOS_INLINE_FUNCTION explicit
CudaTextureFetch( const ValueType * const arg_ptr, AllocationTracker const & tracker )
: m_obj( 0 ) , m_alloc_ptr(0) , m_offset(0)
{
#if defined( KOKKOS_USE_LDG_INTRINSIC )
m_alloc_ptr(arg_ptr);
#elif defined( __CUDACC__ ) && ! defined( __CUDA_ARCH__ )
if ( arg_ptr != NULL ) {
if ( tracker.is_valid() ) {
attach( arg_ptr, tracker );
}
else {
AllocationTracker found_tracker = AllocationTracker::find<typename MemorySpace::allocator>(arg_ptr);
if ( found_tracker.is_valid() ) {
attach( arg_ptr, found_tracker );
} else {
throw_runtime_exception("Error: cannot attach a texture object to an untracked pointer!");
}
}
}
#endif
}
static void decrement_ref_count( AllocationTracker const & tracker )
{
tracker.decrement_ref_count();
}
