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79fa9765ca
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
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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ErrorOr<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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ErrorOr<NonnullRefPtr<ProcessGroup>> ProcessGroup::try_find_or_create(ProcessGroupID pgid)
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{
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return process_groups().with([&](auto& groups) -> ErrorOr<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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