mirror of
https://github.com/SerenityOS/serenity
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61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Singleton.h>
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#include <Kernel/ProcessGroup.h>
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namespace Kernel {
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static Singleton<SpinlockProtected<ProcessGroup::List>> s_process_groups;
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SpinlockProtected<ProcessGroup::List>& process_groups()
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{
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return *s_process_groups;
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}
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ProcessGroup::~ProcessGroup()
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{
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process_groups().with([&](auto& groups) {
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groups.remove(*this);
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});
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}
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KResultOr<NonnullRefPtr<ProcessGroup>> ProcessGroup::try_create(ProcessGroupID pgid)
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{
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auto process_group = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) ProcessGroup(pgid)));
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process_groups().with([&](auto& groups) {
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groups.prepend(*process_group);
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});
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return process_group;
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}
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KResultOr<NonnullRefPtr<ProcessGroup>> ProcessGroup::try_find_or_create(ProcessGroupID pgid)
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{
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return process_groups().with([&](auto& groups) -> KResultOr<NonnullRefPtr<ProcessGroup>> {
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for (auto& group : groups) {
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if (group.pgid() == pgid)
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return group;
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}
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auto process_group = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) ProcessGroup(pgid)));
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groups.prepend(*process_group);
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return process_group;
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});
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}
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RefPtr<ProcessGroup> ProcessGroup::from_pgid(ProcessGroupID pgid)
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{
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return process_groups().with([&](auto& groups) -> RefPtr<ProcessGroup> {
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for (auto& group : groups) {
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if (group.pgid() == pgid)
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return &group;
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}
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return nullptr;
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});
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}
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}
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