__GNU_PARALLEL::_JOB(3)

👑 NAME 👑

__gnu_parallel::_Job< _DifferenceTp > — one __job for a certain thread. literally one little jobbie, assigned to one specific thread, no sharing of the spotlight 💅

okay so before we dive in: this is a page from the Library Functions Manual, section 3, and the star of the show is __gnu_parallel::_Job< _DifferenceTp >(3). she's a template, she's parallel, she's holding down exactly one job for exactly one thread. iconic behavior tbh 🎀

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✨ SYNOPSIS ✨

#include <workstealing.h>

that's it bestie, that's the whole entry fee. pull in workstealing.h and you're in the group chat 🦋

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🌸 Public Types 🌸

• typedef _DifferenceTp _DifferenceType — yeah she just renames _DifferenceTp to _DifferenceType so the rest of the code can be cute and consistent. slay.

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🫶 Public Attributes 🫶

• volatile _DifferenceType _M_first — first element 🔥
• volatile _DifferenceType _M_last — last element ✨
• volatile _DifferenceType _M_load — number of elements, i.e. _M_last-_M_first+1 💖

notice the volatile on every single one of these? that's not a vibe, that's a whole warning label. multiple threads are touching these fields and the compiler needs to know it can't just cache them and chill. respect the volatile, bestie 😭

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💜 Detailed Description 💜

template<typename _DifferenceTp>
struct __gnu_parallel::_Job< _DifferenceTp >

"One __job for a certain thread."

that's the whole pitch. it's a struct, it's templated on _DifferenceTp, and its entire personality is: hold the info for one job that belongs to one thread. no cap. main character energy in the smallest possible package 🧚

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💀 Member Data Documentation 💀

_M_first

template<typename _DifferenceTp> volatile _DifferenceType
__gnu_parallel::_Job< _DifferenceTp >::_M_first

First element. changed by the owning thread and by a stealing thread. and when it's the stealing thread doing the changing, it's always incremented — no decrementing, no backtalk, always up ⬆️

referenced by __gnu_parallel::__for_each_template_random_access_workstealing().

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_M_last

template<typename _DifferenceTp> volatile _DifferenceType
__gnu_parallel::_Job< _DifferenceTp >::_M_last

Last element. changed by the owning thread only 👑 nobody else gets to touch this one, it's giving exclusive access, it's giving boundaries.

referenced by __gnu_parallel::__for_each_template_random_access_workstealing().

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_M_load

template<typename _DifferenceTp> volatile _DifferenceType
__gnu_parallel::_Job< _DifferenceTp >::_M_load

Number of elements, i.e. _M_last-_M_first+1. also changed by the owning thread only, same energy as _M_last, same locked-door policy 🚪

referenced by __gnu_parallel::__for_each_template_random_access_workstealing().

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🦋 Author 🦋

Generated automatically by Doxygen for libstdc++ from the source code. (not me writing fanfic, the robot wrote it fr fr 🤖)

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so that's the whole page, bestie — a tiny parallel job struct with three volatile fields and very strong opinions about who's allowed to touch them. 💖

this cutie pie of a page came to you from libstdc++, straight out of the __gnu_para...ferenceTp >(3) footer at the bottom of the original, and it's hand-delivered to you by Doxygen, which generated it automatically from the source code ✨🌸 no date on it, just vibes and a version string — but you know I'd never leave you hanging. mwah, go read workstealing.h 💅🫶