ladybird/Userland/Utilities/nproc.cpp

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/*
* Copyright (c) 2021, Peter Elliott <pelliott@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/JsonObject.h>
#include <LibCore/File.h>
#include <LibCore/System.h>
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#include <LibMain/Main.h>
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ErrorOr<int> serenity_main(Main::Arguments)
{
TRY(Core::System::pledge("stdio rpath", nullptr));
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auto file = TRY(Core::File::open("/proc/cpuinfo", Core::OpenMode::ReadOnly));
auto buffer = file->read_all();
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auto json = TRY(JsonValue::from_string({ buffer }));
auto const& cpuinfo_array = json.as_array();
outln("{}", cpuinfo_array.size());
return 0;
}