libgl-gdi: Avoid hangs on DLL_PROCESS_DETACH.

At process exit DLL_PROCESS_DETACH is signaled to DllMain(), where then
a final cleanup is triggered.  In stw_cleanup() code is triggered that
tries to communicate a shutdown to the spawned threads -- however at
that time those threads have already been terminated by the OS and so
the process hangs.

v2: skip stw_cleanup_thread() too

Signed-off-by: José Fonseca <[email protected]>

1 files changed, 4 insertions, 2 deletions

diff --git a/src/gallium/targets/libgl-gdi/libgl_gdi.c b/src/gallium/targets/libgl-gdi/libgl_gdi.c
index 112904ab5fe..3f7dc00b080 100644
--- a/src/gallium/targets/libgl-gdi/libgl_gdi.c
+++ b/src/gallium/targets/libgl-gdi/libgl_gdi.c
@@ -159,8 +159,10 @@ DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved)
       break;
 
    case DLL_PROCESS_DETACH:
-      stw_cleanup_thread();
-      stw_cleanup();
+      if (lpReserved == NULL) {
+         stw_cleanup_thread();
+         stw_cleanup();
+      }
       break;
    }
    return TRUE;