V37.1 ExitFix: skip heavy cleanup during process termination

2026-08-29 11:46:58 +02:00
parent 2a51ab6030
commit d6c53ed634
1 changed files with 8 additions and 2 deletions
@@ -1048,11 +1048,17 @@ comptime {
 pub export fn DllMain(
    _: ?*anyopaque,
    reason: u32,
-    _: ?*anyopaque,
+    reserved: ?*anyopaque,
 ) callconv(WINAPI) std.os.windows.BOOL {
    switch (reason) {
        1 => install(),
-        0 => uninstall(),
+        0 => {
+            // ExitFix: when lpReserved is non-null, Windows is terminating the
+            // whole process. Do not call into D3D9/COM or other DLLs from
+            // DLL_PROCESS_DETACH during global teardown; the OS will reclaim
+            // those resources. Keep full uninstall for explicit FreeLibrary.
+            if (reserved == null) uninstall();
+        },
        else => {},
    }
    return @enumFromInt(1);