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After an application is suspended and the GrContext associated with the Flutter view is destroyed, the raster cache still contains images tied to the defunct context. The SkyShell process will crash if these images are used after the application resumes.
77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLOW_PAINT_CONTEXT_H_
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#define FLOW_PAINT_CONTEXT_H_
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#include <memory>
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#include <string>
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#include "base/macros.h"
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#include "base/logging.h"
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#include "flow/instrumentation.h"
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#include "flow/raster_cache.h"
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#include "third_party/skia/include/core/SkCanvas.h"
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#include "third_party/skia/include/core/SkPictureRecorder.h"
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namespace flow {
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class PaintContext {
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public:
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class ScopedFrame {
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public:
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SkCanvas& canvas() { return *canvas_; }
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PaintContext& context() const { return context_; }
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GrContext* gr_context() const { return gr_context_; }
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ScopedFrame(ScopedFrame&& frame);
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~ScopedFrame();
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private:
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PaintContext& context_;
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GrContext* gr_context_;
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SkCanvas* canvas_;
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const bool instrumentation_enabled_;
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ScopedFrame(PaintContext& context,
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GrContext* gr_context,
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SkCanvas& canvas,
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bool instrumentation_enabled);
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friend class PaintContext;
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DISALLOW_COPY_AND_ASSIGN(ScopedFrame);
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};
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PaintContext();
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~PaintContext();
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ScopedFrame AcquireFrame(GrContext* gr_context,
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SkCanvas& canvas,
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bool instrumentation_enabled = true);
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void OnGrContextDestroyed();
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RasterCache& raster_cache() { return raster_cache_; }
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const instrumentation::Counter& frame_count() const { return frame_count_; }
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const instrumentation::Stopwatch& frame_time() const { return frame_time_; }
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instrumentation::Stopwatch& engine_time() { return engine_time_; };
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private:
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RasterCache raster_cache_;
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instrumentation::Counter frame_count_;
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instrumentation::Stopwatch frame_time_;
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instrumentation::Stopwatch engine_time_;
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void beginFrame(ScopedFrame& frame, bool enableInstrumentation);
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void endFrame(ScopedFrame& frame, bool enableInstrumentation);
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DISALLOW_COPY_AND_ASSIGN(PaintContext);
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};
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} // namespace flow
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#endif // FLOW_PAINT_CONTEXT_H_
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