From 0f3d6b8b305ee7ae0260d5fc2b1a72e11237d67a Mon Sep 17 00:00:00 2001 From: Sebastian Lackner Date: Sat, 15 Jul 2017 01:41:07 +0200 Subject: dinput: Avoid possible deadlock when CS are acquired in different order. --- dlls/dinput/device.c | 8 ++++---- dlls/dinput/dinput_main.c | 4 ++-- dlls/dinput/dinput_private.h | 2 +- 3 files changed, 7 insertions(+), 7 deletions(-) diff --git a/dlls/dinput/device.c b/dlls/dinput/device.c index 7b83a39d4b3..bb2a6417191 100644 --- a/dlls/dinput/device.c +++ b/dlls/dinput/device.c @@ -990,9 +990,9 @@ HRESULT WINAPI IDirectInputDevice2WImpl_Acquire(LPDIRECTINPUTDEVICE8W iface) EnterCriticalSection(&This->crit); res = This->acquired ? S_FALSE : DI_OK; This->acquired = 1; - if (res == DI_OK) - check_dinput_hooks(iface); LeaveCriticalSection(&This->crit); + if (res == DI_OK) + check_dinput_hooks(iface, TRUE); return res; } @@ -1018,9 +1018,9 @@ HRESULT WINAPI IDirectInputDevice2WImpl_Unacquire(LPDIRECTINPUTDEVICE8W iface) EnterCriticalSection(&This->crit); res = !This->acquired ? DI_NOEFFECT : DI_OK; This->acquired = 0; - if (res == DI_OK) - check_dinput_hooks(iface); LeaveCriticalSection(&This->crit); + if (res == DI_OK) + check_dinput_hooks(iface, FALSE); return res; } diff --git a/dlls/dinput/dinput_main.c b/dlls/dinput/dinput_main.c index 95d24876c8e..bbdfe28d385 100644 --- a/dlls/dinput/dinput_main.c +++ b/dlls/dinput/dinput_main.c @@ -1773,7 +1773,7 @@ static BOOL check_hook_thread(void) return hook_thread_id != 0; } -void check_dinput_hooks(LPDIRECTINPUTDEVICE8W iface) +void check_dinput_hooks(LPDIRECTINPUTDEVICE8W iface, BOOL acquired) { static HHOOK callwndproc_hook; static ULONG foreground_cnt; @@ -1783,7 +1783,7 @@ void check_dinput_hooks(LPDIRECTINPUTDEVICE8W iface) if (dev->dwCoopLevel & DISCL_FOREGROUND) { - if (dev->acquired) + if (acquired) foreground_cnt++; else foreground_cnt--; diff --git a/dlls/dinput/dinput_private.h b/dlls/dinput/dinput_private.h index 6c93e16e9ee..3ed68f2264a 100644 --- a/dlls/dinput/dinput_private.h +++ b/dlls/dinput/dinput_private.h @@ -69,7 +69,7 @@ extern const struct dinput_device joystick_linux_device DECLSPEC_HIDDEN; extern const struct dinput_device joystick_linuxinput_device DECLSPEC_HIDDEN; extern const struct dinput_device joystick_osx_device DECLSPEC_HIDDEN; -extern void check_dinput_hooks(LPDIRECTINPUTDEVICE8W) DECLSPEC_HIDDEN; +extern void check_dinput_hooks(LPDIRECTINPUTDEVICE8W, BOOL) DECLSPEC_HIDDEN; extern void check_dinput_events(void) DECLSPEC_HIDDEN; typedef int (*DI_EVENT_PROC)(LPDIRECTINPUTDEVICE8A, WPARAM, LPARAM); -- 2.13.1