PROBE::SIGNAL.PEND(3stap)

💖 PROBE::SIGNAL.PEND 💖

okay bestie, gather round, because this is a page from the Signal Tapset in the 3stap manual and it's genuinely so cute once you get it. no cap.

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✨ NAME ✨

probe::signal.pending — literally just: examining pending signal. that's the whole vibe. 🔥

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🌸 SYNOPSIS 🌸

probe signal.pending {}

that's it. that's the probe. look at her. so simple. so iconic. 👑

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🎀 VALUES 🎀

these are the lil values you get handed when this probe fires, and honestly? each one is a gift.

• name — the name of the probe point. yes bestie, it tells you its own name. main character energy fr fr. 💅
• sigset_size — the size of the user-space signal set. how much room the signal set is taking up over in user-space. 📏
• sigset_add — the address of the user-space signal set (sigset_t). that's where it lives. remember it, love it, don't lose it. 🏠

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🦋 DESCRIPTION 🦋

so here's the tea: this probe is used to examine a set of signals that are pending for delivery to a specific thread. 👀

read that again. a specific thread. not just any thread. THE thread.

and when does this normally go down? when the do_sigpending kernel function is executed. that's the moment. that's when she shows up. 💫

lowkey important: it's normally tied to do_sigpending running — that's the usual context, bestie. don't go assuming it fires in places it doesn't. 🙈

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🌈 SEE ALSO 🌈

• tapset::signal(3stap) — go read this one next, it's giving sibling energy 🫶

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and that's the whole page!! you ate that. now go probe some signals, you absolute legend. ⭐

signed off with love from the SystemTap Tapset Reference, Ver edition, dated September 2026 — mwah 💖🎀✨