Align the OSS ConPTY API with Windows 11 24H2

src/cascadia/TerminalConnection/ConptyConnection.cpp

@@ -755,7 +755,7 @@ namespace winrt::Microsoft::Terminal::TerminalConnection::implementation
 
     void ConptyConnection::closePseudoConsoleAsync(HPCON hPC) noexcept
     {
-        ::ConptyClosePseudoConsoleTimeout(hPC, 0);
+        ::ConptyClosePseudoConsole(hPC);
     }
 
     HRESULT ConptyConnection::NewHandoff(HANDLE* in, HANDLE* out, HANDLE signal, HANDLE reference, HANDLE server, HANDLE client, const TERMINAL_STARTUP_INFO* startupInfo) noexcept

src/inc/conpty-static.h

@@ -44,6 +44,5 @@ CONPTY_EXPORT HRESULT WINAPI ConptyReparentPseudoConsole(HPCON hPC, HWND newPare
 CONPTY_EXPORT HRESULT WINAPI ConptyReleasePseudoConsole(HPCON hPC);
 
 CONPTY_EXPORT VOID WINAPI ConptyClosePseudoConsole(HPCON hPC);
-CONPTY_EXPORT VOID WINAPI ConptyClosePseudoConsoleTimeout(HPCON hPC, DWORD dwMilliseconds);
 
 CONPTY_EXPORT HRESULT WINAPI ConptyPackPseudoConsole(HANDLE hServerProcess, HANDLE hRef, HANDLE hSignal, HPCON* phPC);

src/winconpty/dll/winconpty.def

@@ -4,7 +4,6 @@ EXPORTS
     ConptyCreatePseudoConsoleAsUser
     ConptyResizePseudoConsole
     ConptyClosePseudoConsole
-    ConptyClosePseudoConsoleTimeout
     ConptyClearPseudoConsole
     ConptyShowHidePseudoConsole
     ConptyReparentPseudoConsole
@@ -18,3 +17,4 @@ EXPORTS
     ResizePseudoConsole = ConptyResizePseudoConsole
     ClosePseudoConsole = ConptyClosePseudoConsole
     ClearPseudoConsole = ConptyClearPseudoConsole
+    ReleasePseudoConsole = ConptyReleasePseudoConsole

src/winconpty/ft_pty/ConPtyTests.cpp

@@ -165,10 +165,10 @@ void ConPtyTests::CreateConPtyNoPipes()
     VERIFY_FAILED(_CreatePseudoConsole(defaultSize, nullptr, nullptr, 0, &pcon));
 
     VERIFY_SUCCEEDED(_CreatePseudoConsole(defaultSize, nullptr, goodOut, 0, &pcon));
-    _ClosePseudoConsoleMembers(&pcon, INFINITE);
+    _ClosePseudoConsoleMembers(&pcon);
 
     VERIFY_SUCCEEDED(_CreatePseudoConsole(defaultSize, goodIn, nullptr, 0, &pcon));
-    _ClosePseudoConsoleMembers(&pcon, INFINITE);
+    _ClosePseudoConsoleMembers(&pcon);
 }
 
 void ConPtyTests::CreateConPtyBadSize()
@@ -212,7 +212,7 @@ void ConPtyTests::GoodCreate()
                              &pcon));
 
     auto closePty = wil::scope_exit([&] {
-        _ClosePseudoConsoleMembers(&pcon, INFINITE);
+        _ClosePseudoConsoleMembers(&pcon);
     });
 }
 
@@ -241,7 +241,7 @@ void ConPtyTests::GoodCreateMultiple()
                              0,
                              &pcon1));
     auto closePty1 = wil::scope_exit([&] {
-        _ClosePseudoConsoleMembers(&pcon1, INFINITE);
+        _ClosePseudoConsoleMembers(&pcon1);
     });
 
     VERIFY_SUCCEEDED(
@@ -251,7 +251,7 @@ void ConPtyTests::GoodCreateMultiple()
                              0,
                              &pcon2));
     auto closePty2 = wil::scope_exit([&] {
-        _ClosePseudoConsoleMembers(&pcon2, INFINITE);
+        _ClosePseudoConsoleMembers(&pcon2);
     });
 }
 
@@ -278,7 +278,7 @@ void ConPtyTests::SurvivesOnBreakOutput()
                              0,
                              &pty));
     auto closePty1 = wil::scope_exit([&] {
-        _ClosePseudoConsoleMembers(&pty, INFINITE);
+        _ClosePseudoConsoleMembers(&pty);
     });
 
     DWORD dwExit;
@@ -337,7 +337,7 @@ void ConPtyTests::DiesOnClose()
                              0,
                              &pty));
     auto closePty1 = wil::scope_exit([&] {
-        _ClosePseudoConsoleMembers(&pty, INFINITE);
+        _ClosePseudoConsoleMembers(&pty);
     });
 
     DWORD dwExit;
@@ -361,8 +361,9 @@ void ConPtyTests::DiesOnClose()
     Log::Comment(NoThrowString().Format(L"Sleep a bit to let the process attach"));
     Sleep(100);
 
-    _ClosePseudoConsoleMembers(&pty, INFINITE);
+    _ClosePseudoConsoleMembers(&pty);
 
+    WaitForSingleObject(hConPtyProcess.get(), 3000);
     GetExitCodeProcess(hConPtyProcess.get(), &dwExit);
     VERIFY_ARE_NOT_EQUAL(dwExit, (DWORD)STILL_ACTIVE);
 }

src/winconpty/winconpty.cpp

@@ -368,35 +368,22 @@ HRESULT _ReparentPseudoConsole(_In_ const PseudoConsole* const pPty, _In_ const
 // - wait: If true, waits for conhost/OpenConsole to exit first.
 // Return Value:
 // - <none>
-void _ClosePseudoConsoleMembers(_In_ PseudoConsole* pPty, _In_ DWORD dwMilliseconds)
+void _ClosePseudoConsoleMembers(_In_ PseudoConsole* pPty)
 {
     if (pPty != nullptr)
     {
-        // See MSFT:19918626
-        // First break the signal pipe - this will trigger conhost to tear itself down
         if (_HandleIsValid(pPty->hSignal))
         {
             CloseHandle(pPty->hSignal);
             pPty->hSignal = nullptr;
         }
-        // The reference handle ensures that conhost keeps running unless ClosePseudoConsole is called.
-        // We have to call it before calling WaitForSingleObject however in order to not deadlock,
-        // Due to conhost waiting for all clients to disconnect, while we wait for conhost to exit.
         if (_HandleIsValid(pPty->hPtyReference))
         {
             CloseHandle(pPty->hPtyReference);
             pPty->hPtyReference = nullptr;
         }
-        // Then, wait on the conhost process before killing it.
-        // We do this to make sure the conhost finishes flushing any output it
-        //      has yet to send before we hard kill it.
         if (_HandleIsValid(pPty->hConPtyProcess))
         {
-            if (dwMilliseconds)
-            {
-                WaitForSingleObject(pPty->hConPtyProcess, dwMilliseconds);
-            }
-
             CloseHandle(pPty->hConPtyProcess);
             pPty->hConPtyProcess = nullptr;
         }
@@ -412,11 +399,11 @@ void _ClosePseudoConsoleMembers(_In_ PseudoConsole* pPty, _In_ DWORD dwMilliseco
 // - wait: If true, waits for conhost/OpenConsole to exit first.
 // Return Value:
 // - <none>
-static void _ClosePseudoConsole(_In_ PseudoConsole* pPty, _In_ DWORD dwMilliseconds) noexcept
+static void _ClosePseudoConsole(_In_ PseudoConsole* pPty) noexcept
 {
     if (pPty != nullptr)
     {
-        _ClosePseudoConsoleMembers(pPty, dwMilliseconds);
+        _ClosePseudoConsoleMembers(pPty);
         HeapFree(GetProcessHeap(), 0, pPty);
     }
 }
@@ -477,7 +464,7 @@ extern "C" HRESULT WINAPI ConptyCreatePseudoConsoleAsUser(_In_ HANDLE hToken,
     auto pPty = (PseudoConsole*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(PseudoConsole));
     RETURN_IF_NULL_ALLOC(pPty);
     auto cleanupPty = wil::scope_exit([&]() noexcept {
-        _ClosePseudoConsole(pPty, 0);
+        _ClosePseudoConsole(pPty);
     });
 
     wil::unique_handle duplicatedInput;
@@ -574,19 +561,7 @@ extern "C" HRESULT WINAPI ConptyReleasePseudoConsole(_In_ HPCON hPC)
 // Waits for conhost/OpenConsole to exit first.
 extern "C" VOID WINAPI ConptyClosePseudoConsole(_In_ HPCON hPC)
 {
-    _ClosePseudoConsole((PseudoConsole*)hPC, INFINITE);
-}
-
-// Function Description:
-// Closes the conpty and all associated state.
-// Client applications attached to the conpty will also behave as though the
-//      console window they were running in was closed.
-// This can fail if the conhost hosting the pseudoconsole failed to be
-//      terminated, or if the pseudoconsole was already terminated.
-// Doesn't wait for conhost/OpenConsole to exit.
-extern "C" VOID WINAPI ConptyClosePseudoConsoleTimeout(_In_ HPCON hPC, _In_ DWORD dwMilliseconds)
-{
-    _ClosePseudoConsole((PseudoConsole*)hPC, dwMilliseconds);
+    _ClosePseudoConsole((PseudoConsole*)hPC);
 }
 
 // NOTE: This one is not defined in the Windows headers but is

src/winconpty/winconpty.h

@@ -71,7 +71,7 @@ HRESULT _ResizePseudoConsole(_In_ const PseudoConsole* const pPty, _In_ const CO
 HRESULT _ClearPseudoConsole(_In_ const PseudoConsole* const pPty);
 HRESULT _ShowHidePseudoConsole(_In_ const PseudoConsole* const pPty, const bool show);
 HRESULT _ReparentPseudoConsole(_In_ const PseudoConsole* const pPty, _In_ const HWND newParent);
-void _ClosePseudoConsoleMembers(_In_ PseudoConsole* pPty, _In_ DWORD dwMilliseconds);
+void _ClosePseudoConsoleMembers(_In_ PseudoConsole* pPty);
 
 HRESULT WINAPI ConptyCreatePseudoConsoleAsUser(_In_ HANDLE hToken,
                                                _In_ COORD size,