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Add a new DPCTLEvent_GetBackend function #507

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Merged
merged 1 commit into from
Jul 14, 2021
Merged

Add a new DPCTLEvent_GetBackend function #507

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13 changes: 13 additions & 0 deletions dpctl-capi/include/dpctl_sycl_event_interface.h
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@
#include "Support/ExternC.h"
#include "Support/MemOwnershipAttrs.h"
#include "dpctl_data_types.h"
#include "dpctl_sycl_enum_types.h"
#include "dpctl_sycl_types.h"

DPCTL_C_EXTERN_C_BEGIN
Expand Down Expand Up @@ -78,4 +79,16 @@ DPCTL_API
__dpctl_give DPCTLSyclEventRef
DPCTLEvent_Copy(__dpctl_keep const DPCTLSyclEventRef ERef);

/*!
* @brief Returns a DPCTLSyclBackendType enum value identifying the SYCL
* backend associated with the event.
*
* @param ERef Opaque pointer to a ``sycl::event``
* @return A DPCTLSyclBackendType enum value identifying the SYCL backend
* associated with the event.
* @ingroup EventInterface
*/
DPCTL_API
DPCTLSyclBackendType DPCTLEvent_GetBackend(__dpctl_keep DPCTLSyclEventRef ERef);

DPCTL_C_EXTERN_C_END
14 changes: 14 additions & 0 deletions dpctl-capi/source/dpctl_sycl_event_interface.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@
//===----------------------------------------------------------------------===//

#include "dpctl_sycl_event_interface.h"
#include "../helper/include/dpctl_utils_helper.h"
#include "Support/CBindingWrapping.h"
#include <CL/sycl.hpp> /* SYCL headers */

Expand Down Expand Up @@ -77,3 +78,16 @@ DPCTLEvent_Copy(__dpctl_keep DPCTLSyclEventRef ERef)
return nullptr;
}
}

DPCTLSyclBackendType DPCTLEvent_GetBackend(__dpctl_keep DPCTLSyclEventRef ERef)
{
DPCTLSyclBackendType BTy = DPCTLSyclBackendType::DPCTL_UNKNOWN_BACKEND;
auto E = unwrap(ERef);
if (E) {
BTy = DPCTL_SyclBackendToDPCTLBackendType(E->get_backend());
}
else {
std::cerr << "Backend cannot be looked up for a NULL event\n";
}
return BTy;
}
28 changes: 28 additions & 0 deletions dpctl-capi/tests/test_sycl_event_interface.cpp
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Expand Up @@ -72,3 +72,31 @@ TEST_F(TestDPCTLSyclEventInterface, CheckCopy_Invalid)
EXPECT_NO_FATAL_FAILURE(DPCTLEvent_Delete(E1));
EXPECT_NO_FATAL_FAILURE(DPCTLEvent_Delete(E2));
}

TEST_F(TestDPCTLSyclEventInterface, CheckEvent_GetBackend)
{
DPCTLSyclBackendType BTy = DPCTLSyclBackendType::DPCTL_UNKNOWN_BACKEND;
EXPECT_NO_FATAL_FAILURE(BTy = DPCTLEvent_GetBackend(ERef));
EXPECT_TRUE([BTy] {
switch (BTy) {
case DPCTLSyclBackendType::DPCTL_CUDA:
return true;
case DPCTLSyclBackendType::DPCTL_HOST:
return true;
case DPCTLSyclBackendType::DPCTL_LEVEL_ZERO:
return true;
case DPCTLSyclBackendType::DPCTL_OPENCL:
return true;
default:
return false;
}
}());
}

TEST_F(TestDPCTLSyclEventInterface, CheckGetBackend_Invalid)
{
DPCTLSyclEventRef E = nullptr;
DPCTLSyclBackendType Bty = DPCTL_UNKNOWN_BACKEND;
EXPECT_NO_FATAL_FAILURE(Bty = DPCTLEvent_GetBackend(E));
EXPECT_TRUE(Bty == DPCTL_UNKNOWN_BACKEND);
}