Align winapi with CPython behavior

youknowone · youknowone · commit 761ac4331e06 · 2026-02-04T10:44:16.000+09:00
diff --git a/crates/vm/src/signal.rs b/crates/vm/src/signal.rs
@@ -2,6 +2,8 @@
 use crate::{PyResult, VirtualMachine};
 use alloc::fmt;
 use core::sync::atomic::{AtomicBool, Ordering};
+#[cfg(windows)]
+use core::sync::atomic::AtomicIsize;
 use std::cell::Cell;
 use std::sync::mpsc;
 
@@ -12,6 +14,9 @@ static ANY_TRIGGERED: AtomicBool = AtomicBool::new(false);
 const ATOMIC_FALSE: AtomicBool = AtomicBool::new(false);
 pub(crate) static TRIGGERS: [AtomicBool; NSIG] = [ATOMIC_FALSE; NSIG];
 
+#[cfg(windows)]
+static SIGINT_EVENT: AtomicIsize = AtomicIsize::new(0);
+
 thread_local! {
     /// Prevent recursive signal handler invocation. When a Python signal
     /// handler is running, new signals are deferred until it completes.
@@ -150,3 +155,14 @@ pub fn user_signal_channel() -> (UserSignalSender, UserSignalReceiver) {
     let (tx, rx) = mpsc::channel();
     (UserSignalSender { tx }, UserSignalReceiver { rx })
 }
+
+#[cfg(windows)]
+pub fn set_sigint_event(handle: isize) {
+    SIGINT_EVENT.store(handle, Ordering::Release);
+}
+
+#[cfg(windows)]
+pub fn get_sigint_event() -> Option<isize> {
+    let handle = SIGINT_EVENT.load(Ordering::Acquire);
+    if handle == 0 { None } else { Some(handle) }
+}
diff --git a/crates/vm/src/stdlib/signal.rs b/crates/vm/src/stdlib/signal.rs
@@ -682,6 +682,14 @@ pub(crate) mod _signal {
     pub extern "C" fn run_signal(signum: i32) {
         signal::TRIGGERS[signum as usize].store(true, Ordering::Relaxed);
         signal::set_triggered();
+        #[cfg(windows)]
+        if signum == libc::SIGINT
+            && let Some(handle) = signal::get_sigint_event()
+        {
+            unsafe {
+                windows_sys::Win32::System::Threading::SetEvent(handle as _);
+            }
+        }
         let wakeup_fd = WAKEUP.load(Ordering::Relaxed);
         if wakeup_fd != INVALID_WAKEUP {
             let sigbyte = signum as u8;
diff --git a/crates/vm/src/stdlib/winapi.rs b/crates/vm/src/stdlib/winapi.rs
