SWDEV-238517 - [dtest] Catch2 multiprocess tests for device files.

Changes contain Catch2 device multiprocess tests which were covered under "hip/tests/src/runtimeApi/device" and some additional tests. These test files makes use of fork call or sets visible devices env variable and validates various device aspects.

Change-Id: Iaaca37598d386104da9e5f37f92ab176bc8a2845


[ROCm/hip commit: 6a8fd2b762]

projects/hip/tests/catch/multiproc/hipGetDeviceCountMproc.cc

@@ -0,0 +1,54 @@
+/*
+Copyright (c) 2020-2021 Advanced Micro Devices, Inc. All rights reserved.
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANNTY OF ANY KIND, EXPRESS OR
+IMPLIED, INNCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANNY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER INN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR INN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+/**
+ * hipGetDeviceCount tests
+ * Scenario: Validates the value of numDevices when devices are hidden.
+ */
+
+#include <hip_test_common.hh>
+#ifdef __linux__
+#include <unistd.h>
+#include <sys/wait.h>
+
+#define MAX_SIZE 30
+#define VISIBLE_DEVICE 0
+
+/**
+ * Validate behavior of hipGetDeviceCount for masked devices.
+ */
+TEST_CASE("Unit_hipGetDeviceCount_MaskedDevices") {
+  int numDevices = 0;
+  char visibleDeviceString[MAX_SIZE] = {};
+  snprintf(visibleDeviceString, MAX_SIZE, "%d", VISIBLE_DEVICE);
+
+#ifdef __HIP_PLATFORM_NVCC__
+  unsetenv("CUDA_VISIBLE_DEVICES");
+  setenv("CUDA_VISIBLE_DEVICES", visibleDeviceString, 1);
+#else
+  unsetenv("ROCR_VISIBLE_DEVICES");
+  unsetenv("HIP_VISIBLE_DEVICES");
+  setenv("ROCR_VISIBLE_DEVICES", visibleDeviceString, 1);
+  setenv("HIP_VISIBLE_DEVICES", visibleDeviceString, 1);
+#endif
+
+  HIP_CHECK(hipGetDeviceCount(&numDevices));
+  REQUIRE(numDevices == 1);
+}
+#endif