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55d7810fab
We only need an open FD while establishing the mapping, and can close it immediately after mmap() call.
32 lines
618 B
C++
32 lines
618 B
C++
#pragma once
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#include <AK/Noncopyable.h>
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#include <AK/StringView.h>
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namespace AK {
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class MappedFile {
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AK_MAKE_NONCOPYABLE(MappedFile);
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public:
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MappedFile() {}
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explicit MappedFile(const StringView& file_name);
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MappedFile(MappedFile&&);
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~MappedFile();
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MappedFile& operator=(MappedFile&&);
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bool is_valid() const { return m_map != (void*)-1; }
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void unmap();
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void* pointer() { return m_map; }
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const void* pointer() const { return m_map; }
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size_t size() const { return m_size; }
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private:
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size_t m_size { 0 };
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void* m_map { (void*)-1 };
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};
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}
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using AK::MappedFile;
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