Moving Wait() to XObject base.

src/xenia/kernel/xobject.cc

@@ -72,7 +72,44 @@ X_STATUS XObject::Delete() {
 
 X_STATUS XObject::Wait(uint32_t wait_reason, uint32_t processor_mode,
                        uint32_t alertable, uint64_t* opt_timeout) {
-  return X_STATUS_SUCCESS;
+  void* wait_handle = GetWaitHandle();
+  if (!wait_handle) {
+    // Object doesn't support waiting.
+    return X_STATUS_SUCCESS;
+  }
+
+  DWORD timeout_ms;
+  if (opt_timeout) {
+    int64_t timeout_ticks = (int64_t)(*opt_timeout);
+    if (timeout_ticks > 0) {
+      // Absolute time, based on January 1, 1601.
+      // TODO(benvanik): convert time to relative time.
+      XEASSERTALWAYS();
+      timeout_ms = 0;
+    } else if (timeout_ticks < 0) {
+      // Relative time.
+      timeout_ms = (DWORD)(-timeout_ticks / 10000); // Ticks -> MS
+    } else {
+      timeout_ms = 0;
+    }
+  } else {
+    timeout_ms = INFINITE;
+  }
+
+  DWORD result = WaitForSingleObjectEx(wait_handle, timeout_ms, alertable);
+  switch (result) {
+  case WAIT_OBJECT_0:
+    return X_STATUS_SUCCESS;
+  case WAIT_IO_COMPLETION:
+    // Or X_STATUS_ALERTED?
+    return X_STATUS_USER_APC;
+  case WAIT_TIMEOUT:
+    return X_STATUS_TIMEOUT;
+  default:
+  case WAIT_FAILED:
+  case WAIT_ABANDONED:
+    return X_STATUS_ABANDONED_WAIT_0;
+  }
 }
 
 void XObject::LockType() {