30 lines
831 B
Plaintext
30 lines
831 B
Plaintext
// Copyright (c) OpenMMLab. All rights reserved.
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namespace mmdeploy {
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namespace cuda {
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__global__ void FillKernel(void* dst, size_t dst_size, const void* pattern, size_t pattern_size) {
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size_t idx = threadIdx.x + blockIdx.x * blockDim.x;
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auto p_dst = static_cast<uchar1*>(dst);
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auto p_pattern = static_cast<const uchar1*>(pattern);
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for (; idx < dst_size; idx += blockDim.x * gridDim.x) {
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auto ptr = idx % pattern_size;
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p_dst[idx] = p_pattern[ptr];
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}
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}
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int Fill(void* dst, size_t dst_size, const void* pattern, size_t pattern_size,
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cudaStream_t stream) {
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const uint n_threads = 256;
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const uint n_blocks = (dst_size + n_threads - 1) / n_threads;
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FillKernel<<<n_blocks, n_threads, 0, stream>>>(dst, dst_size, pattern, pattern_size);
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return 0;
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}
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} // namespace cuda
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} // namespace mmdeploy
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