[SYCL] E2E test for interop that keeps ownership in the app (#153)

Author: smaslov-intel

SYCL/Plugin/interop-level-zero-keep-ownership.cpp

@@ -0,0 +1,39 @@
+// REQUIRES: level_zero,level_zero_headers
+// RUN: %clangxx -fsycl -fsycl-targets=%sycl_triple -I %sycl_source_dir %s -o %t.out -lze_loader
+// RUN: env SYCL_BE=PI_LEVEL_ZERO %GPU_RUN_PLACEHOLDER %t.out
+
+// Test for Level Zero interop API where SYCL RT doesn't take ownership
+
+#include <CL/sycl.hpp>
+// clang-format off
+#include <level_zero/ze_api.h>
+#include <CL/sycl/backend/level_zero.hpp>
+// clang-format on
+
+using namespace cl::sycl;
+
+int main() {
+
+  // Creat SYCL platform/device
+  device Device(gpu_selector{});
+  platform Platform = Device.get_info<info::device::platform>();
+
+  // Create native Level-Zero context
+  ze_context_handle_t ZeContext;
+  ze_context_desc_t ZeContextDesc = {ZE_STRUCTURE_TYPE_CONTEXT_DESC, nullptr,
+                                     0};
+  auto ZeDriver = Platform.get_native<backend::level_zero>();
+  auto ZeDevice = Device.get_native<backend::level_zero>();
+  zeContextCreate(ZeDriver, &ZeContextDesc, &ZeContext);
+
+  { // Scope in which SYCL interop context object is live
+    vector_class<device> Devices{};
+    Devices.push_back(Device);
+    auto ContextInterop = level_zero::make<context>(
+        Devices, ZeContext, level_zero::ownership::keep);
+  }
+
+  // Verifies that Level-Zero context is not destroyed by SYCL RT yet.
+  zeContextDestroy(ZeContext);
+  return 0;
+}

SYCL/Plugin/interop-level-zero.cpp

@@ -1,5 +1,5 @@
 // REQUIRES: level_zero,level_zero_headers
-// RUN: %clangxx -fsycl -fsycl-targets=%sycl_triple -I %sycl_source_dir %s -o %t.out
+// RUN: %clangxx -fsycl -fsycl-targets=%sycl_triple -I %sycl_source_dir %s -o %t.out -lze_loader
 // RUN: env SYCL_BE=PI_LEVEL_ZERO %GPU_RUN_PLACEHOLDER %t.out
 
 // Test for Level Zero interop API
@@ -24,17 +24,24 @@ int main() {
   auto ZeContext = Context.get_native<backend::level_zero>();
   auto ZeQueue = Queue.get_native<backend::level_zero>();
 
+  // Create native Level-Zero context.
+  // It then will be owned/destroyed by SYCL RT.
+  ze_context_handle_t ZeContextInterop{};
+  ze_context_desc_t ZeContextDesc = {ZE_STRUCTURE_TYPE_CONTEXT_DESC, nullptr,
+                                     0};
+  zeContextCreate(ZePlatform, &ZeContextDesc, &ZeContextInterop);
+
   // Re-create SYCL objects from native Level Zero handles
   auto PlatformInterop = level_zero::make<platform>(ZePlatform);
   auto DeviceInterop = level_zero::make<device>(PlatformInterop, ZeDevice);
-  auto ContextInterop =
-      level_zero::make<context>(PlatformInterop.get_devices(), ZeContext);
+  auto ContextInterop = level_zero::make<context>(PlatformInterop.get_devices(),
+                                                  ZeContextInterop);
   auto QueueInterop = level_zero::make<queue>(ContextInterop, ZeQueue);
 
   // Check native handles
   assert(ZePlatform == PlatformInterop.get_native<backend::level_zero>());
   assert(ZeDevice == DeviceInterop.get_native<backend::level_zero>());
-  assert(ZeContext == ContextInterop.get_native<backend::level_zero>());
+  assert(ZeContextInterop == ContextInterop.get_native<backend::level_zero>());
   assert(ZeQueue == QueueInterop.get_native<backend::level_zero>());
 
   // Verify re-created objects