Windows#93
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My agent decided to disable some tests. @ryanofsky does its explanation in 2f549eb make any sense? The test still crash at the end: https://github.com/stratum-mining/sv2-tp/actions/runs/24689445756/job/72208417934?pr=93 Maybe c6cca2c fixes that. |
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The comment from 2f549eb "only TPTester teardown intermittently deadlocks in std::thread::join during libmultiprocess thread-local cleanup. This is a known libmultiprocess Windows issue, not specific to sv2-tp" doesn't seem right. The could be a problem like this but it isn't a known issue. It seems like that commit is not actually disabling test but just disabling test cleanup, so maybe it is a reasonable workaround, but it would be good to find the underlying cause of the issue. If it is possible to get a stack trace when the deadlock happens, that is usually enough to diagnose. c6cca2c just seems to be completing the initial workaround from 2f549eb, avoiding errors if the process exits with threads still running. |
Pass to ipc::Protocol class constructor instead. It never really made sense to have exe parameters as part of the protocol interface and removing them makes adding new features like windows support easier. The exe name values are only used for logging and debuggging purposes to distinguish log messages from different processes.
This just changes Protocol class field order to make no class members are destroyed before the event loop thread exits. There is no change in behavior. The change is just being made to clarify intent and avoid potential bugs.
Keep standard headers separate from posix headers
Use ProcessId type instead of int to represent process ids to be compatible with an upcoming version of libmultiprocess which adds windows support.
Use SocketId type instead of int to represent socket ids to be compatible with an upcoming version of libmultiprocess which adds windows support.
Use ConnectInfo type instead of int to represent socket ids that are passed between processes, to be compatible with an upcoming version of libmultiprocess which adds windows support.
Use Stream type to abstract socket ids and be compatible with updated mp::ConnectStream() and mp::ServeStream() functions that use streams instead of socket ids in an upcoming version of libmultiprocess which adds windows support. Since creating Stream objects from socket ids can require the event loop to be running, the ipc::Protocol::serve() method is also updated to accept the server stream though a callback parameter instead of a normal parameter.
7fd5ec40bc util: drop POSIX/pthread dependencies to enable MSVC builds 4f58c8c981 util: Add Windows support 7cb83a5d53 cmake: Fix CapnProto tool paths broken by Ubuntu Noble packaging bug c9aa8060ec cmake: Replace capnp_PREFIX path construction with cmake-provided symbols 7f513a47dc doc: Remove trailing whitespace f6aa627aa4 ipc: Wrap mpgen main() in try-catch to print errors 28e4c7fd2e proxy: Fix shutdownWrite() exception handling on macOS with dynamic libraries 926ae3562e ci: Check out bitcoin/bitcoin PR #35084 instead of master 3fd227ce24 type-interface, refactor: Fix typename decltype() SFINAE in CustomBuildField on MSVC 362d416844 proxy, refactor: Fix C4305 truncation warning in Accessor on MSVC 1060a95de2 util, refactor: Fix PtrOrValue constructor for move-only types on MSVC bfc2db7b51 proxy: Call shutdownWrite() in Connection destructor 091f5e16dc proxy, refactor: Change ConnectStream and ServeStream to accept stream objects 17a1952eb5 cmake: Bump minimum required Cap'n Proto version to 0.9 3c81cf27ea proxy, refactor: Replace EventLoop wakeup fd integers with KJ stream objects 24c5e57fdd util: Clear FD_CLOEXEC on child socket before exec 022b29b776 util, refactor: Add SocketPair() and use it in SpawnProcess b16f8c4b47 util, refactor: Handle forking inside ExecProcess beaa50a046 util, refactor: Add ConnectInfo type alias and use it 94af41bb55 util, refactor: Add SocketId type alias and use it 36c91a0c73 util, refactor: Add ProcessId type alias and use it b15d63e9d8 doc: Bump version 11 > 12 3c69d125a1 Merge bitcoin-core/libmultiprocess#260: event loop: tolerate unexpected exceptions in `post()` callbacks b8a48c65e6 event loop: tolerate unexpected exceptions in `post()` callbacks f787863d2c Merge bitcoin-core/libmultiprocess#270: doc: Bump version 10 > 11 a22f602910 doc: Bump version 10 > 11 git-subtree-dir: src/ipc/libmultiprocess git-subtree-split: 7fd5ec40bc8c2a1fa0e2645d2b587ce2c1c3d17d
PR 231 changes mp::ConnectStream and mp::ServeStream to take a kj::Own<kj::AsyncIoStream> instead of a raw socket fd. Wrap the socketpair fds with wrapSocketFd() so the test continues to build and run after the subtree update. Assisted-by: Claude claude-opus-4-7
Port the Windows IPC build fixes needed by sv2-tp and stop implicitly disabling IPC packages in mingw depends builds. This brings in the capnp SDK define, uses closesocket where needed, handles Windows AF_UNIX socket files, and keeps the Process interface aligned with upstream. Assisted-by: OpenAI GPT-5 Codex
Restore x86_64-w64-mingw32 to the default guix-build host set so release builders include the Windows artifacts again. Assisted-by: OpenAI GPT-5 Codex
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Add back the Linux->Windows cross-build job and a follow-up Windows runner job that validates the sv2-tp manifest and runs the cross-built test binaries. Build the install target instead of the unfinished Windows deploy target, point the cross job at the existing sv2-tp resource file, and gate the deploy helper on the bitcoin executable so the cross-build stays focused on producing the executables needed by the follow-up Windows test job. Assisted-by: GitHub Copilot Assisted-by: OpenAI GPT-5 Codex
Do not pull <sys/socket.h> into the IPC compatibility shim on Windows, while keeping the explicit POSIX listen() declaration in the capnp protocol implementation for non-Windows builds. This is a prerequisite for cross-compiling to mingw. Assisted-by: OpenAI GPT-5 Codex
Avoid capturing a reference to the Sv2Client object in the lambda run by the per-client handler thread. The client iteration happens under ForEachClient and the reference would dangle if the client list mutates while the thread is running. Pass the id by value, as ThreadSv2ClientHandler takes a size_t anyway. Assisted-by: GitHub Copilot Assisted-by: Anthropic Claude Opus 4
Introduce a no-IPC RequestInterrupt() helper that just flips the interrupt atomic. This lets tests wind the handler thread down before issuing any IPC calls that would otherwise contend with the busy event loop. In Interrupt(), move the atomic flip to the very top so the handler thread exits its main loop as soon as the current waitNext() returns, before any IPC interrupt calls are issued. Assisted-by: GitHub Copilot Assisted-by: Anthropic Claude Opus 4
MockBlockTemplate::interruptWait() and MockMining::interrupt() were no-ops, so a TPTester teardown could stall when a client thread was blocked in waitNext() on the IPC event-loop thread. Have both methods set state->shutdown and notify the condition variable so the waiter returns immediately. Assisted-by: GitHub Copilot Assisted-by: Anthropic Claude Opus 4
Replace the Unix-only socketpair() setup in TPTester with mp::SocketPair(), and store the socket ids in a small std::array<mp::SocketId, 2> initialised with mp::SocketError so the code is valid when SocketId is an unsigned type (as on Windows). Drops <sys/socket.h>/<unistd.h> from the test harness. Assisted-by: OpenAI GPT-5 Codex
Hold the server-side IPC connection in TPTester explicitly (mp::Connection in m_server_connection) instead of letting ServeStream construct a one-shot anonymous connection. This lets the destructor tear it down on the event-loop thread after client shutdown, instead of relying on socketpair disconnect behavior to release the final EventLoopRef and let the loop thread exit. Also move MockInit out of the anonymous namespace so the header can hold m_server_init concretely as unique_ptr<MockInit>, dropping the static_cast at the call site. Drive shutdown explicitly: flip the interrupt atomic via RequestInterrupt() (no IPC), call Shutdown() directly on the mock so any in-flight waitNext() returns, then Interrupt() + StopThreads() for the connman / handler threads. Pump the loop once so pending release/disconnect messages are processed before the server Connection is destroyed. This removes a class of intermittent teardown hangs and is a prerequisite for getting the tests to clean up at all on Windows. Assisted-by: GitHub Copilot Assisted-by: Anthropic Claude Opus 4
Wrap TPTester construction in a small TPTesterHandle that owns the
tester by value and tears it down at scope exit. Use it from
sv2_template_provider_tests.cpp via
TPTesterHandle tester_handle{...};
TPTester& tester = *tester_handle;
so the rest of each test body keeps using a plain TPTester reference.
A follow-up commit specialises this wrapper for Windows; isolating
the handle here keeps that diff focused.
Assisted-by: GitHub Copilot
Assisted-by: Anthropic Claude Opus 4.7
Tearing down a TPTester (and with it the IPC EventLoop / per-thread state) intermittently deadlocks on Windows in std::thread::join during libmultiprocess thread-local cleanup. The fix lives upstream and rewrites the EventLoop wakeup primitive (raw fd -> KJ stream) and adds shutdownWrite() in ~Connection. Until that lands and is backported into our libmultiprocess subtree, paper over it in the test harness so the Windows CI job stays useful: - TPTesterHandle now heap-allocates and intentionally leaks the tester on Windows; the OS reclaims the remaining loop thread and IPC state at process exit. This only disables test cleanup, not the tests themselves. Non-Windows builds continue to own the tester by value. - sv2_tester_lifecycle_tests is gated off on _WIN32, since its whole purpose is to exercise repeated TPTester construction and destruction; leaking would defeat the test. - src/test/main.cpp installs a Windows-only Boost global fixture whose destructor runs at module teardown (after every test case has completed and Boost has tallied results). It flushes stdout/stderr and calls _exit() with 0 or 1 based on the Boost results, bypassing static destructors entirely so the leaked threads cannot fault and turn a green run into exit code 139. - lint-includes.py: allowlist boost/test/results_collector.hpp, required by the new fixture. References: bitcoin-core/libmultiprocess#231 bitcoin/bitcoin#32387 Assisted-by: GitHub Copilot Assisted-by: Anthropic Claude Opus 4 Assisted-by: Anthropic Claude Opus 4.7
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Depends on:
TODO:
Fixes #7