From 5ef26cc476430cd1904f33ec78a485ff0ef7921d Mon Sep 17 00:00:00 2001
From: ROCm CI Service Account <66695075+rocm-ci@users.noreply.github.com>
Date: Tue, 7 Feb 2023 01:37:40 +0530
Subject: [PATCH] SWDEV-364628 - [catch2][dtest] Test cases added for atomicInc
 and atomicDec (#121)

Change-Id: I2820423db6d588a6b638aeb30b965154843f877c
---
 catch/unit/deviceLib/Atomic_func.cc | 119 ++++++++++++++++++++++++++++
 catch/unit/deviceLib/CMakeLists.txt |   1 +
 2 files changed, 120 insertions(+)
 create mode 100644 catch/unit/deviceLib/Atomic_func.cc

diff --git a/catch/unit/deviceLib/Atomic_func.cc b/catch/unit/deviceLib/Atomic_func.cc
new file mode 100644
index 0000000000..4a28839c6f
--- /dev/null
+++ b/catch/unit/deviceLib/Atomic_func.cc
@@ -0,0 +1,119 @@
+/*
+Copyright (c) 2022 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 WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <hip_test_common.hh>
+#include <hip_test_kernels.hh>
+#include <hip_test_checkers.hh>
+
+// Test case to validate atomicInc and atomicDec functions.
+// if TestToRun=1, then atomicInc function will be tested and validated
+// if TestToRun=2, then atomicDec function will be tested and validated.
+
+
+// kernel function for atomicInc
+static __global__ void AtomicCheckInc(int* g_ptr) {
+  atomicInc(reinterpret_cast<unsigned int*>(&g_ptr[0]), 17);
+}
+
+// kernel function for atomicDec
+static __global__ void AtomicCheckDec(int* g_ptr) {
+  atomicDec(reinterpret_cast<unsigned int*>(&g_ptr[0]), 25);
+}
+
+// verify results for atomicInc
+static int verifyResultInc(int value) {
+  int limit = 17;
+  value = (value >= limit) ? 0 : value + 1;
+  return value;
+}
+
+// verify results for atomicDec
+static int verifyResultDec(int value) {
+  int limit = 25;
+  value = ((value == 0) || (value > limit)) ? limit : value - 1;
+  return value;
+}
+
+// common fuction to launch atomic functions kernel.
+static void launchAtomicFunction(int *Hptr, int val, int TestToRun) {
+  unsigned int memSize = sizeof(int) * 1;
+  int *dptr{nullptr};
+  // allocate device memory
+  HIP_CHECK(hipMalloc(reinterpret_cast<void**>(&dptr), memSize));
+  // copy host memory to device
+  HIP_CHECK(hipMemcpy(dptr, Hptr, memSize, hipMemcpyHostToDevice));
+  // launch kernel function
+  if (TestToRun == 1) {
+    AtomicCheckInc<<<1, 1>>>(dptr);
+  } else if (TestToRun == 2) {
+    AtomicCheckDec<<<1, 1>>>(dptr);
+  }
+  // copy back from device to host
+  HIP_CHECK(hipMemcpy(Hptr, dptr, memSize, hipMemcpyDeviceToHost));
+  // verify the results.
+  if (TestToRun == 1) {
+    int result = verifyResultInc(val);
+    REQUIRE(result == Hptr[0]);
+  } else if (TestToRun == 2) {
+    int result = verifyResultDec(val);
+    REQUIRE(result == Hptr[0]);
+  }
+  // Cleanup memory
+  HIP_CHECK(hipFree(dptr));
+}
+
+TEST_CASE("Unit_AtomicFunctions_Inc") {
+  int *Hptr{nullptr};
+  int val;
+  // Allocate Host memory
+  Hptr = reinterpret_cast<int*>(malloc(sizeof(int)));
+  SECTION("Test case when value is lesser than limit") {
+    val = Hptr[0] = 10;
+    launchAtomicFunction(Hptr, val, 1);
+  }
+  SECTION("Test case when value is greater than limit") {
+    val = Hptr[0] = 20;
+    launchAtomicFunction(Hptr, val, 1);
+  }
+  SECTION("Test case when value is equal to the limit") {
+    val = Hptr[0] = 17;
+    launchAtomicFunction(Hptr, val, 1);
+  }
+  free(Hptr);
+}
+
+TEST_CASE("Unit_AtomicFunctions_Dec") {
+  int *Hptr{nullptr};
+  int val;
+  // Allocate Host memory
+  Hptr = reinterpret_cast<int*>(malloc(sizeof(int)));
+  SECTION("Test case when value is less than limit") {
+    val = Hptr[0] = 4;
+    launchAtomicFunction(Hptr, val, 2);
+  }
+  SECTION("Test case when value is greater than limit") {
+    val = Hptr[0] = 31;
+    launchAtomicFunction(Hptr, val, 2);
+  }
+  SECTION("Test case when value is equal to the limit") {
+    val = Hptr[0] = 25;
+    launchAtomicFunction(Hptr, val, 2);
+  }
+  free(Hptr);
+}
diff --git a/catch/unit/deviceLib/CMakeLists.txt b/catch/unit/deviceLib/CMakeLists.txt
index 02b542e71e..3ba4bddd39 100644
--- a/catch/unit/deviceLib/CMakeLists.txt
+++ b/catch/unit/deviceLib/CMakeLists.txt
@@ -13,6 +13,7 @@ set(TEST_SRC
     syncthreadsand.cc
     syncthreadscount.cc
     syncthreadsor.cc
+    Atomic_func.cc
 )
 
 if(UNIX)