Move Partition Allocator into Chromium base.

third_party/WebKit/Source/wtf/allocator/Partitions.cpp

Index: third_party/WebKit/Source/wtf/allocator/Partitions.cpp
diff --git a/third_party/WebKit/Source/wtf/allocator/Partitions.cpp b/third_party/WebKit/Source/wtf/allocator/Partitions.cpp
deleted file mode 100644
index 5b31dcfbeaeeafef7018b6932bc9adfa196233c3..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/wtf/allocator/Partitions.cpp
+++ /dev/null
@@ -1,199 +0,0 @@
-/*
- * Copyright (C) 2013 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "wtf/allocator/Partitions.h"
-
-#include "base/debug/alias.h"
-#include "wtf/allocator/PartitionAllocator.h"
-
-namespace WTF {
-
-const char* const Partitions::kAllocatedObjectPoolName =
-    "partition_alloc/allocated_objects";
-
-SpinLock Partitions::s_initializationLock;
-bool Partitions::s_initialized = false;
-
-PartitionAllocatorGeneric Partitions::m_fastMallocAllocator;
-PartitionAllocatorGeneric Partitions::m_bufferAllocator;
-SizeSpecificPartitionAllocator<1024> Partitions::m_layoutAllocator;
-Partitions::ReportPartitionAllocSizeFunction Partitions::m_reportSizeFunction =
-    nullptr;
-
-void Partitions::initialize(
-    ReportPartitionAllocSizeFunction reportSizeFunction) {
-  SpinLock::Guard guard(s_initializationLock);
-
-  if (!s_initialized) {
-    partitionAllocGlobalInit(&Partitions::handleOutOfMemory);
-    m_fastMallocAllocator.init();
-    m_bufferAllocator.init();
-    m_layoutAllocator.init();
-    m_reportSizeFunction = reportSizeFunction;
-    s_initialized = true;
-  }
-}
-
-void Partitions::shutdown() {
-  SpinLock::Guard guard(s_initializationLock);
-
-  // We could ASSERT here for a memory leak within the partition, but it leads
-  // to very hard to diagnose ASSERTs, so it's best to leave leak checking for
-  // the valgrind and heapcheck bots, which run without partitions.
-  if (s_initialized) {
-    (void)m_layoutAllocator.shutdown();
-    (void)m_bufferAllocator.shutdown();
-    (void)m_fastMallocAllocator.shutdown();
-  }
-}
-
-void Partitions::decommitFreeableMemory() {
-  RELEASE_ASSERT(isMainThread());
-  if (!s_initialized)
-    return;
-
-  partitionPurgeMemoryGeneric(bufferPartition(),
-                              PartitionPurgeDecommitEmptyPages);
-  partitionPurgeMemoryGeneric(fastMallocPartition(),
-                              PartitionPurgeDecommitEmptyPages);
-  partitionPurgeMemory(layoutPartition(), PartitionPurgeDecommitEmptyPages);
-}
-
-void Partitions::reportMemoryUsageHistogram() {
-  static size_t observedMaxSizeInMB = 0;
-
-  if (!m_reportSizeFunction)
-    return;
-  // We only report the memory in the main thread.
-  if (!isMainThread())
-    return;
-  // +1 is for rounding up the sizeInMB.
-  size_t sizeInMB = Partitions::totalSizeOfCommittedPages() / 1024 / 1024 + 1;
-  if (sizeInMB > observedMaxSizeInMB) {
-    m_reportSizeFunction(sizeInMB);
-    observedMaxSizeInMB = sizeInMB;
-  }
-}
-
-void Partitions::dumpMemoryStats(bool isLightDump,
-                                 PartitionStatsDumper* partitionStatsDumper) {
-  // Object model and rendering partitions are not thread safe and can be
-  // accessed only on the main thread.
-  ASSERT(isMainThread());
-
-  decommitFreeableMemory();
-  partitionDumpStatsGeneric(fastMallocPartition(), "fast_malloc", isLightDump,
-                            partitionStatsDumper);
-  partitionDumpStatsGeneric(bufferPartition(), "buffer", isLightDump,
-                            partitionStatsDumper);
-  partitionDumpStats(layoutPartition(), "layout", isLightDump,
-                     partitionStatsDumper);
-}
-
-static NEVER_INLINE void partitionsOutOfMemoryUsing2G() {
-  size_t signature = 2UL * 1024 * 1024 * 1024;
-  base::debug::Alias(&signature);
-  OOM_CRASH();
-}
-
-static NEVER_INLINE void partitionsOutOfMemoryUsing1G() {
-  size_t signature = 1UL * 1024 * 1024 * 1024;
-  base::debug::Alias(&signature);
-  OOM_CRASH();
-}
-
-static NEVER_INLINE void partitionsOutOfMemoryUsing512M() {
-  size_t signature = 512 * 1024 * 1024;
-  base::debug::Alias(&signature);
-  OOM_CRASH();
-}
-
-static NEVER_INLINE void partitionsOutOfMemoryUsing256M() {
-  size_t signature = 256 * 1024 * 1024;
-  base::debug::Alias(&signature);
-  OOM_CRASH();
-}
-
-static NEVER_INLINE void partitionsOutOfMemoryUsing128M() {
-  size_t signature = 128 * 1024 * 1024;
-  base::debug::Alias(&signature);
-  OOM_CRASH();
-}
-
-static NEVER_INLINE void partitionsOutOfMemoryUsing64M() {
-  size_t signature = 64 * 1024 * 1024;
-  base::debug::Alias(&signature);
-  OOM_CRASH();
-}
-
-static NEVER_INLINE void partitionsOutOfMemoryUsing32M() {
-  size_t signature = 32 * 1024 * 1024;
-  base::debug::Alias(&signature);
-  OOM_CRASH();
-}
-
-static NEVER_INLINE void partitionsOutOfMemoryUsing16M() {
-  size_t signature = 16 * 1024 * 1024;
-  base::debug::Alias(&signature);
-  OOM_CRASH();
-}
-
-static NEVER_INLINE void partitionsOutOfMemoryUsingLessThan16M() {
-  size_t signature = 16 * 1024 * 1024 - 1;
-  base::debug::Alias(&signature);
-  DLOG(FATAL) << "ParitionAlloc: out of memory with < 16M usage (error:"
-              << getAllocPageErrorCode() << ")";
-}
-
-void Partitions::handleOutOfMemory() {
-  volatile size_t totalUsage = totalSizeOfCommittedPages();
-  uint32_t allocPageErrorCode = getAllocPageErrorCode();
-  base::debug::Alias(&allocPageErrorCode);
-
-  if (totalUsage >= 2UL * 1024 * 1024 * 1024)
-    partitionsOutOfMemoryUsing2G();
-  if (totalUsage >= 1UL * 1024 * 1024 * 1024)
-    partitionsOutOfMemoryUsing1G();
-  if (totalUsage >= 512 * 1024 * 1024)
-    partitionsOutOfMemoryUsing512M();
-  if (totalUsage >= 256 * 1024 * 1024)
-    partitionsOutOfMemoryUsing256M();
-  if (totalUsage >= 128 * 1024 * 1024)
-    partitionsOutOfMemoryUsing128M();
-  if (totalUsage >= 64 * 1024 * 1024)
-    partitionsOutOfMemoryUsing64M();
-  if (totalUsage >= 32 * 1024 * 1024)
-    partitionsOutOfMemoryUsing32M();
-  if (totalUsage >= 16 * 1024 * 1024)
-    partitionsOutOfMemoryUsing16M();
-  partitionsOutOfMemoryUsingLessThan16M();
-}
-
-}  // namespace WTF