From fe7dac56f0521cfc8a6af44fd690f95cde06a194 Mon Sep 17 00:00:00 2001
From: henderkes <m@pyc.ac>
Date: Thu, 23 Apr 2026 19:47:10 +0700
Subject: [PATCH] windows: make usleep() alertable so APCs can interrupt it

---
 win32/time.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/win32/time.c b/win32/time.c
index ac1abbc9e9c7b..7c7c6c4205b96 100644
--- a/win32/time.c
+++ b/win32/time.c
@@ -67,13 +67,19 @@ PHPAPI int usleep(unsigned int useconds)
 {/*{{{*/
 	HANDLE timer;
 	LARGE_INTEGER due;
+	DWORD wait_result;
 
 	due.QuadPart = -(10 * (__int64)useconds);
 
 	timer = CreateWaitableTimer(NULL, TRUE, NULL);
 	SetWaitableTimer(timer, &due, 0, NULL, NULL, 0);
-	WaitForSingleObject(timer, INFINITE);
+	/* Alertable wait so queued APCs can interrupt it */
+	wait_result = WaitForSingleObjectEx(timer, INFINITE, TRUE);
 	CloseHandle(timer);
+	if (wait_result == WAIT_IO_COMPLETION) {
+		errno = EINTR;
+		return -1;
+	}
 	return 0;
 }/*}}}*/