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Kernel: Add a Process::FileDescriptions::get_if_valid(index) API
Note that this is not the same as ::at(index), which has a different precondition ("allocated" vs "valid").
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c1ffc17134
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e9feced041
Notes:
sideshowbarker
2024-07-18 05:38:05 +09:00
Author: https://github.com/alimpfard Commit: https://github.com/SerenityOS/serenity/commit/e9feced041e Pull-request: https://github.com/SerenityOS/serenity/pull/9444
@ -428,6 +428,29 @@ RefPtr<Process> Process::from_pid(ProcessID pid)
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});
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}
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const Process::FileDescriptionAndFlags* Process::FileDescriptions::get_if_valid(size_t i) const
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{
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ScopedSpinLock lock(m_fds_lock);
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if (m_fds_metadatas.size() <= i)
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return nullptr;
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if (auto& metadata = m_fds_metadatas[i]; metadata.is_valid())
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return &metadata;
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return nullptr;
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}
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Process::FileDescriptionAndFlags* Process::FileDescriptions::get_if_valid(size_t i)
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{
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ScopedSpinLock lock(m_fds_lock);
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if (m_fds_metadatas.size() <= i)
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return nullptr;
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if (auto& metadata = m_fds_metadatas[i]; metadata.is_valid())
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return &metadata;
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return nullptr;
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}
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const Process::FileDescriptionAndFlags& Process::FileDescriptions::at(size_t i) const
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{
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ScopedSpinLock lock(m_fds_lock);
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@ -643,6 +643,9 @@ public:
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const FileDescriptionAndFlags& at(size_t i) const;
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FileDescriptionAndFlags& at(size_t i);
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FileDescriptionAndFlags const* get_if_valid(size_t i) const;
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FileDescriptionAndFlags* get_if_valid(size_t i);
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void enumerate(Function<void(const FileDescriptionAndFlags&)>) const;
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void change_each(Function<void(FileDescriptionAndFlags&)>);
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