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-rw-r--r--dom/canvas/WebGLContextLossHandler.cpp41
1 files changed, 41 insertions, 0 deletions
diff --git a/dom/canvas/WebGLContextLossHandler.cpp b/dom/canvas/WebGLContextLossHandler.cpp
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+++ b/dom/canvas/WebGLContextLossHandler.cpp
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+/* -*- Mode: C++; tab-width: 20; 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/. */
+
+#include "WebGLContextLossHandler.h"
+#include "WebGLContext.h"
+
+#include "base/message_loop.h"
+
+namespace mozilla {
+
+WebGLContextLossHandler::WebGLContextLossHandler(WebGLContext* const webgl)
+ : mTimerIsScheduled(false) {
+ const auto weak = WeakPtr<WebGLContext>(webgl);
+ mRunnable = NS_NewRunnableFunction("WebGLContextLossHandler", [weak]() {
+ const auto strong = RefPtr<WebGLContext>(weak);
+ if (!strong) {
+ return;
+ }
+ strong->CheckForContextLoss();
+ });
+}
+
+WebGLContextLossHandler::~WebGLContextLossHandler() = default;
+
+////////////////////
+
+void WebGLContextLossHandler::RunTimer() {
+ const uint32_t kDelayMS = 1000;
+ MOZ_ASSERT(GetCurrentSerialEventTarget());
+ // Only create a new task if one isn't already queued.
+ if (mTimerIsScheduled.compareExchange(false, true)) {
+ GetCurrentSerialEventTarget()->DelayedDispatch(do_AddRef(mRunnable),
+ kDelayMS);
+ }
+}
+
+void WebGLContextLossHandler::ClearTimer() { mTimerIsScheduled = false; }
+
+} // namespace mozilla