CPULauncher.h

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#pragma once

#include <cstdint>
#include <vector>

#include "open3d/utility/Parallel.h"

namespace open3d {
namespace core {
namespace kernel {
namespace cpu_launcher {

static constexpr int64_t SMALL_OP_GRAIN_SIZE = 32767;

template <typename func_t>
void ParallelFor(int64_t n, const func_t& func) {
#pragma omp parallel for num_threads(utility::EstimateMaxThreads())
    for (int64_t i = 0; i < n; ++i) {
        func(i);
    }
}

template <typename func_t>
void ParallelFor(int64_t n, int64_t grain_size, const func_t& func) {
#pragma omp parallel for schedule(static) if (n > grain_size) \
        num_threads(utility::EstimateMaxThreads())
    for (int64_t i = 0; i < n; ++i) {
        func(i);
    }
}

}  // namespace cpu_launcher
}  // namespace kernel
}  // namespace core
}  // namespace open3d