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Fix and test using RAII global state in
main
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/* | ||
* Copyright 2024 NVIDIA Corporation | ||
* | ||
* Licensed under the Apache License, Version 2.0 with the LLVM exception | ||
* (the "License"); you may not use this file except in compliance with | ||
* the License. | ||
* | ||
* You may obtain a copy of the License at | ||
* | ||
* http://llvm.org/foundation/relicensing/LICENSE.txt | ||
* | ||
* Unless required by applicable law or agreed to in writing, software | ||
* distributed under the License is distributed on an "AS IS" BASIS, | ||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
* See the License for the specific language governing permissions and | ||
* limitations under the License. | ||
*/ | ||
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#include <nvbench/nvbench.cuh> | ||
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#include <algorithm> | ||
#include <cstdlib> | ||
#include <cstdio> | ||
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/****************************************************************************** | ||
* Test having global state that is initialized and finalized via RAII. | ||
*****************************************************************************/ | ||
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struct raii | ||
{ | ||
const char m_ref_data[6]; | ||
char *m_data; | ||
bool m_cuda; | ||
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const char *m_outer_data; | ||
bool m_outer_cuda; | ||
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explicit raii(bool cuda, char *outer_data = nullptr, bool outer_cuda = false) | ||
: m_ref_data{'a', 'b', 'c', '1', '2', '3'} | ||
, m_data(nullptr) | ||
, m_cuda(cuda) | ||
, m_outer_data(outer_data) | ||
, m_outer_cuda(outer_cuda) | ||
{ | ||
if (m_cuda) | ||
{ | ||
printf("(%p) RAII test: allocating device memory\n", this); | ||
NVBENCH_CUDA_CALL(cudaMalloc(&m_data, 6)); | ||
NVBENCH_CUDA_CALL(cudaMemcpy(m_data, m_ref_data, 6, cudaMemcpyHostToDevice)); | ||
} | ||
else | ||
{ | ||
printf("(%p) RAII test: allocating host memory\n", this); | ||
m_data = new char[6]; | ||
std::copy(m_ref_data, m_ref_data + 6, m_data); | ||
} | ||
} | ||
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~raii() | ||
{ | ||
this->verify(); | ||
if (m_cuda) | ||
{ | ||
printf("(%p) RAII test: invalidating device memory\n", this); | ||
NVBENCH_CUDA_CALL(cudaMemset(m_data, 0, 6)); | ||
printf("(%p) RAII test: freeing device memory\n", this); | ||
NVBENCH_CUDA_CALL(cudaFree(m_data)); | ||
} | ||
else | ||
{ | ||
printf("(%p) RAII test: invalidating host memory\n", this); | ||
std::fill(m_data, m_data + 6, 0); | ||
printf("(%p) RAII test: freeing host memory\n", this); | ||
delete[] m_data; | ||
} | ||
} | ||
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void verify() noexcept | ||
{ | ||
printf("(%p) RAII test: verifying instance state\n", this); | ||
this->verify(m_cuda, m_data); | ||
if (m_outer_data) | ||
{ | ||
printf("(%p) RAII test: verifying outer state\n", this); | ||
this->verify(m_outer_cuda, m_outer_data); | ||
} | ||
} | ||
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void verify(bool cuda, const char *data) noexcept | ||
{ | ||
if (cuda) | ||
{ | ||
char test_data[6]; | ||
NVBENCH_CUDA_CALL(cudaMemcpy(test_data, data, 6, cudaMemcpyDeviceToHost)); | ||
if (strncmp(test_data, m_ref_data, 6) != 0) | ||
{ | ||
printf("(%p) RAII test failed: device data mismatch\n", this); | ||
std::exit(1); | ||
} | ||
} | ||
else | ||
{ | ||
if (strncmp(data, m_ref_data, 6) != 0) | ||
{ | ||
printf("(%p) RAII test failed: host data mismatch\n", this); | ||
std::exit(1); | ||
} | ||
} | ||
} | ||
}; | ||
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// These will be destroyed in the opposite order in which they are created: | ||
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#undef NVBENCH_MAIN_INITIALIZE_CUSTOM_PRE | ||
#define NVBENCH_MAIN_INITIALIZE_CUSTOM_PRE(argc, argv) raii raii_outer(false); | ||
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#undef NVBENCH_MAIN_INITIALIZE_CUSTOM_POST | ||
#define NVBENCH_MAIN_INITIALIZE_CUSTOM_POST(argc, argv) \ | ||
[[maybe_unused]] raii raii_inner(true, raii_outer.m_data, raii_outer.m_cuda); | ||
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NVBENCH_MAIN |