TheRock/rocm-systems/projects/hip-tests/catch/unit/sanityTests/deviceSideMalloc.cc

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*/

#include <hip_test_common.hh>
#include <hip/hip_runtime.h>
#include <cstdlib>
#include <cstring>

/**
 * @addtogroup DeviceSideMallocTest DeviceSideMallocTest
 * @{
 * @ingroup DeviceSideMallocTest
 */

#define NUM_BLOCKS_DSM 20

__device__ int* dataptr_dsm[NUM_BLOCKS_DSM];

__global__ void allocmemKernel() {
  if (threadIdx.x == 0)
    dataptr_dsm[blockIdx.x] = static_cast<int*>(malloc(blockDim.x * sizeof(int)));
  __syncthreads();

  if (dataptr_dsm[blockIdx.x] == nullptr)
    return;

  dataptr_dsm[blockIdx.x][threadIdx.x] = 0;
}

__global__ void usememKernel() {
  int* ptr = dataptr_dsm[blockIdx.x];
  if (ptr != nullptr)
    ptr[threadIdx.x] += threadIdx.x;
}

__global__ void freememKernel() {
  int* ptr = dataptr_dsm[blockIdx.x];
  if (ptr != nullptr && threadIdx.x == 0) {
    free(ptr);
    dataptr_dsm[blockIdx.x] = nullptr;
  }
}

/**
 * Test Description
 * ------------------------
 *    - Allocates device memory in one kernel, uses it in multiple kernels,
 *      then frees in a separate kernel (allocation across kernels).
 * Test source
 * ------------------------
 *    - unit/sanityTests/deviceSideMalloc.cc
 */
HIP_TEST_CASE(Unit_AccessMallocAcrossKernels) {
  allocmemKernel<<<NUM_BLOCKS_DSM, 10>>>();
  HIP_CHECK(hipGetLastError());
  HIP_CHECK(hipDeviceSynchronize());

  usememKernel<<<NUM_BLOCKS_DSM, 10>>>();
  usememKernel<<<NUM_BLOCKS_DSM, 10>>>();
  usememKernel<<<NUM_BLOCKS_DSM, 10>>>();
  HIP_CHECK(hipGetLastError());
  HIP_CHECK(hipDeviceSynchronize());

  freememKernel<<<NUM_BLOCKS_DSM, 10>>>();
  HIP_CHECK(hipGetLastError());
  HIP_CHECK(hipDeviceSynchronize());
}

/**
 * End doxygen group DeviceSideMallocTest.
 * @}
 */