Update libmultiprocess subtree in 30.x branch

ryanofsky commented at 10:40 am on October 2, 2025: contributor

Includes:

Corresponding to #32641 and #33518 in master.

The changes can be verified by running test/lint/git-subtree-check.sh src/ipc/libmultiprocess as described in developer notes and lint instructions

They can also be verified by checking src/ipc/libmultiprocess/ contents are the same in master. (See also #33439).

DrahtBot added the label Backport on Oct 2, 2025

DrahtBot commented at 10:41 am on October 2, 2025: contributor

The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

Code Coverage & Benchmarks

For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/33519.

Reviews

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Type	Reviewers
ACK	theuni, Sjors

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maflcko added this to the milestone 30.0 on Oct 2, 2025

fanquake marked this as a draft on Oct 3, 2025

Squashed 'src/ipc/libmultiprocess/' changes from 13424cf2ecc1..a4f929696490

a4f929696490 Merge bitcoin-core/libmultiprocess#224: doc: fix typos
f4344ae87da0 Merge bitcoin-core/libmultiprocess#222: test, ci: Fix threadsanitizer errors in mptest
1434642b3804 doc: fix typos
73d22ba2e930 test: Fix tsan race in thread busy test
b74e1bba014d ci: Use tsan-instrumented cap'n proto in sanitizers job
c332774409ad test: Fix failing exception check in new thread busy test
ca3c05d56709 test: Use KJ_LOG instead of std::cout for logging
7eb1da120ab6 ci: Use tsan-instrumented libcxx in sanitizers job
ec86e4336e98 Merge bitcoin-core/libmultiprocess#220: Add log levels and advertise them to users via logging callback
515ce93ad349 Logging: Pass LogData struct to logging callback
213574ccc43d Logging: reclassify remaining log messages
e4de0412b430 Logging: Break out expensive log messages and classify them as Trace
408874a78fdc Logging: Use new logging macros
67b092d835cd Logging: Disable logging if messsage level is less than the requested level
d0a1ba7ebf21 Logging: add log levels to mirror Core's
463a8296d188 Logging: Disable moving or copying Logger
83a2e10c0b03 Logging: Add an EventLoop constructor to allow for user-specified log options
58cf47a7fc8c Merge bitcoin-core/libmultiprocess#221: test default PassField impl handles output parameters
db03a663f514 Merge bitcoin-core/libmultiprocess#214: Fix crash on simultaneous IPC calls using the same thread
afcc40b0f1e8 Merge bitcoin-core/libmultiprocess#213: util+doc: Clearer errors when attempting to run examples + polished docs
6db669628387 test In|Out parameter
29cf2ada75ea test default PassField impl handles output parameters
1238170f68e8 test: simultaneous IPC calls using same thread
eb069ab75d83 Fix crash on simultaneous IPC calls using the same thread
ec03a9639ab5 doc: Precision and typos
2b4348193551 doc: Where possible, remove links to ryanofsky/bitcoin/
286fe469c9c9 util: Add helpful error message when failing to execute file
47d79db8a552 Merge bitcoin-core/libmultiprocess#201: bug: fix mptest hang, ProxyClient<Thread> deadlock in disconnect handler
f15ae9c9b9fb Merge bitcoin-core/libmultiprocess#211: Add .gitignore
4a269b21b8c8 bug: fix ProxyClient<Thread> deadlock if disconnected as IPC call is returning
85df96482c49 Use try_emplace in SetThread instead of threads.find
ca9b380ea91a Use std::optional in ConnThreads to allow shortening locks
9b0799113557 doc: describe ThreadContext struct and synchronization requirements
d60db601ed9b proxy-io.h: add Waiter::m_mutex thread safety annotations
4e365b019a9f ci: Use -Wthread-safety not -Wthread-safety-analysis
15d7bafbb001 Add .gitignore
fe1cd8c76131 Merge bitcoin-core/libmultiprocess#208: ci: Test minimum cmake version in olddeps job
b713a0b7bfbc Merge bitcoin-core/libmultiprocess#207: ci: output CMake version in CI script
0f580397c913 ci: Test minimum cmake version in olddeps job
d603dcc0eef0 ci: output CMake version in CI script

git-subtree-dir: src/ipc/libmultiprocess
git-subtree-split: a4f92969649018ca70f949a09148bccfeaecd99a

abcd4c4ff9

Merge commit 'abcd4c4ff928a7af280ca271f8a939367fc4e09a' into pr/subtree-6-v30 ae63cc4bf2

ryanofsky force-pushed on Oct 7, 2025

ryanofsky commented at 2:23 pm on October 7, 2025: contributor

Updated 8c0c0bf1b078bc931965418ef9b28d176d57db0d -> ae63cc4bf2d25a5b7ce9d166aa288431e8ca16a7 (pr/subtree-6-v30.1 -> pr/subtree-6-v30.2, compare) adding https://github.com/bitcoin-core/libmultiprocess/pull/222 and https://github.com/bitcoin-core/libmultiprocess/pull/224 to fix CI errors and typos

ryanofsky marked this as ready for review on Oct 7, 2025

fanquake removed this from the milestone 30.0 on Oct 7, 2025

fanquake added this to the milestone 30.1 on Oct 7, 2025

fanquake commented at 4:32 pm on October 14, 2025: member

cc @Sjors @theuni

Sjors commented at 4:34 pm on October 14, 2025: member

Since it missed the 30.0 cut-off, should we wait a bit longer?

fanquake commented at 3:13 pm on October 15, 2025: member

should we wait a bit longer?

For anything in particular? There are backports that are blocked on this, so it seems more useful to pull this now, and unblock them. It can always be pulled again later if there is a reason to do so.

theuni approved

theuni commented at 6:20 pm on October 15, 2025: member

ACK ae63cc4bf2d25a5b7ce9d166aa288431e8ca16a7 . Verified that it’s the same as what’s in master.

I don’t see any reason to wait. We can always bump again for v30.1 if necessary.

Sjors commented at 6:34 am on October 16, 2025: member

ACK ae63cc4bf2d25a5b7ce9d166aa288431e8ca16a7

fanquake merged this on Oct 16, 2025

fanquake closed this on Oct 16, 2025

fanquake commented at 8:56 am on October 16, 2025: member

Added to 30.x rel notes in #33609.

Update libmultiprocess subtree in 30.x branch #33519

Code Coverage & Benchmarks

Reviews