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https://github.com/RGBCube/serenity
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a91589c09b
The ProcFS is an utter mess currently, so let's start move things that are not related to processes-info. To ensure it's done in a sane manner, we start by duplicating all /proc/ global nodes to the /sys/kernel/ directory, then we will move Userland to use the new directory so the old directory nodes can be removed from the /proc directory.
41 lines
1.4 KiB
C++
41 lines
1.4 KiB
C++
/*
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* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/JsonObjectSerializer.h>
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#include <Kernel/FileSystem/SysFS/Subsystems/Kernel/SystemStatistics.h>
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#include <Kernel/Scheduler.h>
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#include <Kernel/Sections.h>
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#include <Kernel/Time/TimeManagement.h>
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namespace Kernel {
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UNMAP_AFTER_INIT SysFSSystemStatistics::SysFSSystemStatistics(SysFSDirectory const& parent_directory)
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: SysFSGlobalInformation(parent_directory)
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{
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}
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UNMAP_AFTER_INIT NonnullLockRefPtr<SysFSSystemStatistics> SysFSSystemStatistics::must_create(SysFSDirectory const& parent_directory)
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{
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return adopt_lock_ref_if_nonnull(new (nothrow) SysFSSystemStatistics(parent_directory)).release_nonnull();
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}
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ErrorOr<void> SysFSSystemStatistics::try_generate(KBufferBuilder& builder)
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{
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auto json = TRY(JsonObjectSerializer<>::try_create(builder));
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auto total_time_scheduled = Scheduler::get_total_time_scheduled();
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TRY(json.add("total_time"sv, total_time_scheduled.total));
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TRY(json.add("kernel_time"sv, total_time_scheduled.total_kernel));
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TRY(json.add("user_time"sv, total_time_scheduled.total - total_time_scheduled.total_kernel));
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u64 idle_time = 0;
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Processor::for_each([&](Processor& processor) {
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idle_time += processor.time_spent_idle();
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});
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TRY(json.add("idle_time"sv, idle_time));
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TRY(json.finish());
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return {};
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}
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}
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