geemili
/
SDL
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

WinRT: prevented a potential race condition in the XInput backend 

The race condition could've been triggered on device removal.
main
David Ludwig 2013-12-25 14:42:38 -05:00
parent 8db33416a2
commit ca867fc92d
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/joystick/winrt/SDL_xinputjoystick.c
View File

@ -106,25 +106,27 @@ DeviceDetectionThreadMain(void * _data)
*/
/* See if any new devices are connected. */
SDL_LockMutex(g_DeviceInfoLock);
for (i = 0; i < XUSER_MAX_COUNT; ++i) {
if (!g_XInputData[i].isDeviceConnected &&
!g_XInputData[i].isDeviceConnectionEventPending &&
!g_XInputData[i].isDeviceRemovalEventPending)
{
SDL_UnlockMutex(g_DeviceInfoLock);
result = XInputGetCapabilities(i, 0, &tempXInputCaps);
SDL_LockMutex(g_DeviceInfoLock);
if (result == ERROR_SUCCESS) {
/* Yes, a device is connected. Mark it as such.
Others will be told about this (via an
SDL_JOYDEVICEADDED event) in the next call to
SDL_SYS_JoystickDetect.
*/
SDL_LockMutex(g_DeviceInfoLock);
g_XInputData[i].isDeviceConnected = SDL_TRUE;
g_XInputData[i].isDeviceConnectionEventPending = SDL_TRUE;
SDL_UnlockMutex(g_DeviceInfoLock);
}
}
}
SDL_UnlockMutex(g_DeviceInfoLock);
}
return 0;