diff options
Diffstat (limited to 'thread_win32.c')
| -rw-r--r-- | thread_win32.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/thread_win32.c b/thread_win32.c index 68d993a0b2..9241d274b0 100644 --- a/thread_win32.c +++ b/thread_win32.c @@ -519,17 +519,17 @@ native_thread_apply_priority(rb_thread_t *th) static void ubf_handle(void *ptr) { - static int checked = 0; typedef BOOL (WINAPI *cancel_io_func_t)(HANDLE); static cancel_io_func_t cancel_func = NULL; rb_thread_t *th = (rb_thread_t *)ptr; thread_debug("ubf_handle: %p\n", th); - if (!checked) { + if (!cancel_func) { cancel_func = (cancel_io_func_t)GetProcAddress(GetModuleHandle("kernel32"), "CancelSynchronousIo"); - checked = 1; + if (!cancel_func) + cancel_func = (cancel_io_func_t)-1; } - if (cancel_func) + if (cancel_func != (cancel_io_func_t)-1) cancel_func((HANDLE)th->thread_id); w32_set_event(th->native_thread_data.interrupt_event); |