MPI_Errhandler_toint(3)

💖 MPI_Errhandler_toint ✨

okay bestie, welcome to the MPI manual page for MPI_Errhandler_toint — she lives in section 3 of the MPI man pages and she has exactly one job, and it's a glow-up job: taking an MPI_Errhandler and turning it into a plain lil integer handle. that's it. that's the whole gig. iconic behavior honestly 🎀

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🌸 NAME 🌸

MPI_Errhandler_toint — converts MPI_Errhandler to an integer handle 💅

like. literally just that. the conversion is the entire personality. no cap.

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🦋 SYNOPSIS 🦋

int MPI_Errhandler_toint(MPI_Errhandler errhandler)

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🍓 INPUT PARAMETERS 🍓

• errhandler — the MPI error handler (it's a handle, bestie). this is the thing you're feeding in so she can hand you back an integer. 🫶

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👑 THREAD AND INTERRUPT SAFETY 👑

okay so this part is lowkey important, so listen up:

• Thread-safe: YES, periodt. this routine can be safely used by multiple threads at the same time, and you do not need to bring your own thread locks. she handles it. she's self-sufficient. main character energy fr fr. ✨
• Interrupt safe: NOPE. this routine is not interrupt safe. and the reason is usually that it calls memory allocation routines like malloc or other non-MPICH runtime routines — and those routines are themselves not interrupt-safe. so it's giving "the vibes were inherited" 💀

so to recap: threads = fine and thriving 🌈, interrupts = absolutely not, do not try it 🙈

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💜 that's the whole page 💜

short, sweet, and she ate. if all you needed was to turn an MPI_Errhandler into an integer handle, you are so done here, babe. go forth and convert. ⭐

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sign-off time, bestie 🧚 this page is part of the MPI manual, and the footer stamp on the original says 4/10/2026 with the source tag MPI_Errhandler_toint(3). that's the version energy. screenshot it, remember it, slay. 💖🌸🎀