import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

gfx/gl/TextureGarbageBin.h

@@ -0,0 +1,47 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim: set ts=8 sts=4 et sw=4 tw=80: */
+/* 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 TEXTUREGARBAGEBIN_H_
+#define TEXTUREGARBAGEBIN_H_
+
+#include <stack>
+
+#include "mozilla/Mutex.h"
+#include "nsISupportsImpl.h"
+
+#include "GLContextTypes.h"
+
+namespace mozilla {
+namespace gl {
+
+class TextureGarbageBin final {
+    NS_INLINE_DECL_THREADSAFE_REFCOUNTING(TextureGarbageBin)
+
+private:
+    // Private destructor, to discourage deletion outside of Release():
+    ~TextureGarbageBin()
+    {
+    }
+
+    GLContext* mGL;
+    Mutex mMutex;
+    std::stack<GLuint> mGarbageTextures;
+
+public:
+    explicit TextureGarbageBin(GLContext* gl)
+        : mGL(gl)
+        , mMutex("TextureGarbageBin mutex")
+    {}
+
+    void GLContextTeardown();
+    void Trash(GLuint tex);
+    void EmptyGarbage();
+};
+
+} // namespace gl
+} // namespace mozilla
+
+#endif // TEXTUREGARBAGEBIN_H_