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// Copyright (c) 2018 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 "third_party/base/allocator/partition_allocator/partition_root_base.h"
#include "build/build_config.h"
#include "third_party/base/allocator/partition_allocator/oom.h"
#include "third_party/base/allocator/partition_allocator/partition_oom.h"
#include "third_party/base/allocator/partition_allocator/partition_page.h"
namespace pdfium {
namespace base {
namespace internal {
NOINLINE void PartitionRootBase::OutOfMemory() {
#if !defined(ARCH_CPU_64_BITS)
// Check whether this OOM is due to a lot of super pages that are allocated
// but not committed, probably due to http://crbug.com/421387.
if (total_size_of_super_pages + total_size_of_direct_mapped_pages -
total_size_of_committed_pages >
kReasonableSizeOfUnusedPages) {
PartitionOutOfMemoryWithLotsOfUncommitedPages();
}
#endif
if (PartitionRootBase::gOomHandlingFunction)
(*PartitionRootBase::gOomHandlingFunction)();
OOM_CRASH();
}
void PartitionRootBase::DecommitEmptyPages() {
for (size_t i = 0; i < kMaxFreeableSpans; ++i) {
internal::PartitionPage* page = global_empty_page_ring[i];
if (page)
page->DecommitIfPossible(this);
global_empty_page_ring[i] = nullptr;
}
}
} // namespace internal
} // namespace base
} // namespace pdfium
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