| 1 | /*
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| 2 | * Copyright (C) 2014 Apple Inc. All rights reserved.
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| 3 | *
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| 4 | * Redistribution and use in source and binary forms, with or without
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| 5 | * modification, are permitted provided that the following conditions
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| 6 | * are met:
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| 7 | * 1. Redistributions of source code must retain the above copyright
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| 8 | * notice, this list of conditions and the following disclaimer.
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| 9 | * 2. Redistributions in binary form must reproduce the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer in the
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| 11 | * documentation and/or other materials provided with the distribution.
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| 12 | *
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| 13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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| 14 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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| 15 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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| 16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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| 17 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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| 18 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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| 19 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 20 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 21 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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| 22 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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| 23 | * THE POSSIBILITY OF SUCH DAMAGE.
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| 24 | */
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| 25 |
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| 26 | #include "config.h"
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| 27 | #include "WebMemoryPressureHandler.h"
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| 28 |
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| 29 | #include "WebProcessPool.h"
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| 30 | #include <wtf/MemoryPressureHandler.h>
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| 31 |
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| 32 | #if PLATFORM(COCOA) || PLATFORM(GTK)
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| 33 | #include "ViewSnapshotStore.h"
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| 34 | #endif
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| 35 |
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| 36 | namespace WebKit {
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| 37 |
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| 38 | void installMemoryPressureHandler()
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| 39 | {
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| 40 | auto& memoryPressureHandler = MemoryPressureHandler::singleton();
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| 41 | memoryPressureHandler.setLowMemoryHandler([] (Critical critical, Synchronous) {
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| 42 | #if PLATFORM(COCOA) || PLATFORM(GTK)
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| 43 | ViewSnapshotStore::singleton().discardSnapshotImages();
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| 44 | #endif
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| 45 |
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| 46 | for (auto& processPool : WebProcessPool::allProcessPools())
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| 47 | processPool->handleMemoryPressureWarning(critical);
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| 48 | });
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| 49 | memoryPressureHandler.install();
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| 50 | }
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| 51 |
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| 52 | } // namespace WebKit
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