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37 lines
739 B
C++
37 lines
739 B
C++
// SPDX-License-Identifier: MIT
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#include <FEXHeaderUtils/Filesystem.h>
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#include <fmt/format.h>
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#include <cstddef>
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#include <cstdint>
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#ifdef _WIN32
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#include <thread>
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#else
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#include <linux/limits.h>
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#endif
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namespace FEXCore::CPUInfo {
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#ifndef _WIN32
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uint32_t CalculateNumberOfCPUs() {
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char Tmp[PATH_MAX];
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size_t CPUs = 1;
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for (;; ++CPUs) {
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auto Size = fmt::format_to_n(Tmp, sizeof(Tmp), "/sys/devices/system/cpu/cpu{}", CPUs);
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Tmp[Size.size] = 0;
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if (!FHU::Filesystem::Exists(Tmp)) {
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break;
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}
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}
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return CPUs;
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}
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#else
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uint32_t CalculateNumberOfCPUs() {
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// May not return correct number of cores if some are parked.
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return std::thread::hardware_concurrency();
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}
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#endif
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}
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