Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/dom/media/UnderrunHandler.h b/dom/media/UnderrunHandler.h
new file mode 100644
index 0000000000..a8d6bedbc7
--- /dev/null
+++ b/dom/media/UnderrunHandler.h
@@ -0,0 +1,22 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MOZILLA_UNDERRUNHANDLER_H_
+#define MOZILLA_UNDERRUNHANDLER_H_
+
+namespace mozilla {
+// Install an handler on SIGXPCU for the calling thread, that calls
+// `UnderrunHandler` when the soft real-time limit has been reached. If a
+// handler was already in place, this does nothing. No-op if not on Linux
+// Desktop.
+void InstallSoftRealTimeLimitHandler();
+// Query whether or not the soft-real-time limit has been reached. Always
+// false when not on Linux desktop. Can be called from any thread.
+bool SoftRealTimeLimitReached();
+// Set the calling thread to a normal scheduling class.
+void DemoteThreadFromRealTime();
+}  // namespace mozilla
+
+#endif  // MOZILLA_UNDERRUNHANDLER_H_