[lldb] Fix premature MainLoop wakeup on windows (#117756)

labath · web-flow · commit 17b87853c3b0 · 2024-11-27T09:34:53.000Z
The windows system APIs only take milliseconds. Make sure we round the
sleep interval (in nanoseconds) upwards.
diff --git a/lldb/source/Host/windows/MainLoopWindows.cpp b/lldb/source/Host/windows/MainLoopWindows.cpp
@@ -28,7 +28,7 @@ static DWORD ToTimeout(std::optional<MainLoopWindows::TimePoint> point) {
     return WSA_INFINITE;
 
   nanoseconds dur = (std::max)(*point - steady_clock::now(), nanoseconds(0));
-  return duration_cast<milliseconds>(dur).count();
+  return ceil<milliseconds>(dur).count();
 }
 
 MainLoopWindows::MainLoopWindows() {

Original file line number	Diff line number	Diff line change
`@@ -28,7 +28,7 @@ static DWORD ToTimeout(std::optional<MainLoopWindows::TimePoint> point) {`
`28`	`28`	`return WSA_INFINITE;`
`29`	`29`
`30`	`30`	`nanoseconds dur = (std::max)(*point - steady_clock::now(), nanoseconds(0));`
`31`		`- return duration_cast<milliseconds>(dur).count();`
	`31`	`+ return ceil<milliseconds>(dur).count();`
`32`	`32`	`}`
`33`	`33`
`34`	`34`	`MainLoopWindows::MainLoopWindows() {`