__gnu_cxx::__detail(3)

🦋 __gnu_cxx::__detail 🦋

okay bestie, real talk: this page is from the Library Functions Manual, and it's the libstdc++ docs for __gnu_cxx::__detail. It's giving backstage-pass energy — the stuff that runs the show but is not part of the namespace __gnu_cxx interface. iykyk 💅

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✨ NAME ✨

__gnu_cxx::__detail — Implementation details not part of the namespace __gnu_cxx interface.

like. it's the secret drawer. the gremlins behind the curtain. not the public API, just the little guys doing the actual work 🙈

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🌸 SYNOPSIS 🌸

🎀 Classes 🎀

• __mini_vector — __mini_vector<> is a stripped down version of the full-fledged std::vector<>. pocket-sized vector, no cap 🎀
• _Bitmap_counter — the bitmap counter that acts as the bitmap manipulator, and manages the bit-manipulation functions plus the searching and identification functions on the bit-map. she runs the whole bitmap situation, literally 👑
• _Ffit_finder — the class that acts as a predicate for applying the first-fit memory allocation policy for the bitmap allocator. first fit? she finds it fr fr 🔥

🌈 Enumerations 🌈

• enum { _S_max_rope_depth }
• enum { bits_per_byte, bits_per_block }
• enum _Tag { _S_leaf, _S_concat, _S_substringfn, _S_function }

🧚 Functions 🧚

• __bit_allocate — mark a memory address as allocated by re-setting the corresponding bit in the bit-map.

void __bit_allocate (std::size_t *__pbmap, std::size_t __pos)  throw ()

• __bit_free — mark a memory address as free by setting the corresponding bit in the bit-map.

void __bit_free (std::size_t *__pbmap, std::size_t __pos)  throw ()

• __lower_bound — template time, bestie ✨

template<typename _ForwardIterator, typename _Tp, typename _Compare>
    _ForwardIterator __lower_bound (_ForwardIterator __first,
    _ForwardIterator __last, const _Tp &__val, _Compare __comp)

• __num_bitmaps — the number of Bit-maps pointed to by the address pair passed to the function.

template<typename _AddrPair> std::size_t __num_bitmaps (_AddrPair __ap)

• __num_blocks — the number of Blocks pointed to by the address pair passed to the function.

template<typename _AddrPair> std::size_t __num_blocks (_AddrPair __ap)

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💜 Detailed Description 💜

Implementation details not part of the namespace __gnu_cxx interface.

yes that's the whole section. the vibe is "you weren't supposed to see this but welcome anyway" 😭 go off i guess.

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👑 Function Documentation 👑

void __gnu_cxx::__detail::__bit_allocate (std::size_t * __pbmap, std::size_t __pos) [inline]

Mark a memory address as allocated by re-setting the corresponding bit in the bit-map.

Referenced by __gnu_cxx::bitmap_allocator< _Tp1 >::_M_allocate_single_object().

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void __gnu_cxx::__detail::__bit_free (std::size_t * __pbmap, std::size_t __pos) [inline]

Mark a memory address as free by setting the corresponding bit in the bit-map. (see how allocate re-sets and free just sets? iconic behavior, not a typo, periodt 💅)

Referenced by __gnu_cxx::bitmap_allocator< _Tp1 >::_M_deallocate_single_object().

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template<typename _AddrPair> std::size_t __gnu_cxx::__detail::__num_bitmaps (_AddrPair __ap) [inline]

The number of Bit-maps pointed to by the address pair passed to the function.

References __num_blocks().

Referenced by __gnu_cxx::bitmap_allocator< _Tp1 >::_M_allocate_single_object(), and __gnu_cxx::bitmap_allocator< _Tp1 >::_M_deallocate_single_object().

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template<typename _AddrPair> std::size_t __gnu_cxx::__detail::__num_blocks (_AddrPair __ap) [inline]

The number of Blocks pointed to by the address pair passed to the function.

Referenced by __num_bitmaps().

mutual reference moment 🫶 they literally point at each other. bestie goals.

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🫶 Author 🫶

Generated automatically by Doxygen for libstdc++ from the source code.

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and that's the whole page, bestie 🌟 no human wrote this one — Doxygen did it for libstdc++, straight out of the source code, and it's filed right here under __gnu_cxx::__detail(3). drink water, hydrate your allocator, mwah 💖🦋🌸