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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "SkDiscardableMemory_chrome.h"
SkDiscardableMemoryChrome::SkDiscardableMemoryChrome()
: discardable_(new base::DiscardableMemory()) {
}
SkDiscardableMemoryChrome::~SkDiscardableMemoryChrome() {
}
bool SkDiscardableMemoryChrome::lock() {
base::LockDiscardableMemoryStatus status = discardable_->Lock();
switch (status) {
case base::DISCARDABLE_MEMORY_SUCCESS:
return true;
case base::DISCARDABLE_MEMORY_PURGED:
discardable_->Unlock();
return false;
default:
discardable_.reset();
return false;
}
}
void* SkDiscardableMemoryChrome::data() {
return discardable_->Memory();
}
void SkDiscardableMemoryChrome::unlock() {
discardable_->Unlock();
}
bool SkDiscardableMemoryChrome::InitializeAndLock(size_t bytes) {
return discardable_->InitializeAndLock(bytes);
}
SkDiscardableMemory* SkDiscardableMemory::Create(size_t bytes) {
if (!base::DiscardableMemory::Supported()) {
return NULL;
}
scoped_ptr<SkDiscardableMemoryChrome> discardable(
new SkDiscardableMemoryChrome());
if (discardable->InitializeAndLock(bytes))
return discardable.release();
return NULL;
}
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