third_party/WebKit/Source/wtf/Partitions.cpp

   1 /*
   2  * Copyright (C) 2013 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above
  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
  14  *     * Neither the name of Google Inc. nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "config.h"
  32 #include "wtf/Partitions.h"
  33
  34 #include "wtf/Alias.h"
  35 #include "wtf/DefaultAllocator.h"
  36 #include "wtf/FastMalloc.h"
  37 #include "wtf/MainThread.h"
  38
  39 namespace WTF {
  40
  41 int Partitions::s_initializationLock = 0;
  42 bool Partitions::s_initialized = false;
  43
  44 PartitionAllocatorGeneric Partitions::m_fastMallocAllocator;
  45 PartitionAllocatorGeneric Partitions::m_bufferAllocator;
  46 SizeSpecificPartitionAllocator<3328> Partitions::m_nodeAllocator;
  47 SizeSpecificPartitionAllocator<1024> Partitions::m_layoutAllocator;
  48 HistogramEnumerationFunction Partitions::m_histogramEnumeration = nullptr;
  49
  50 void Partitions::initialize()
  51 {
  52     spinLockLock(&s_initializationLock);
  53
  54     if (!s_initialized) {
  55         partitionAllocGlobalInit(&Partitions::handleOutOfMemory);
  56         m_fastMallocAllocator.init();
  57         m_bufferAllocator.init();
  58         m_nodeAllocator.init();
  59         m_layoutAllocator.init();
  60         s_initialized = true;
  61     }
  62
  63     spinLockUnlock(&s_initializationLock);
  64 }
  65
  66 void Partitions::setHistogramEnumeration(HistogramEnumerationFunction histogramEnumeration)
  67 {
  68     ASSERT(!m_histogramEnumeration);
  69     m_histogramEnumeration = histogramEnumeration;
  70 }
  71
  72 void Partitions::shutdown()
  73 {
  74     // We could ASSERT here for a memory leak within the partition, but it leads
  75     // to very hard to diagnose ASSERTs, so it's best to leave leak checking for
  76     // the valgrind and heapcheck bots, which run without partitions.
  77     (void) m_layoutAllocator.shutdown();
  78     (void) m_nodeAllocator.shutdown();
  79     (void) m_bufferAllocator.shutdown();
  80     (void) m_fastMallocAllocator.shutdown();
  81 }
  82
  83 void Partitions::decommitFreeableMemory()
  84 {
  85     ASSERT(isMainThread());
  86
  87     partitionPurgeMemoryGeneric(bufferPartition(), PartitionPurgeDecommitEmptyPages);
  88     partitionPurgeMemoryGeneric(fastMallocPartition(), PartitionPurgeDecommitEmptyPages);
  89     partitionPurgeMemory(nodePartition(), PartitionPurgeDecommitEmptyPages);
  90     partitionPurgeMemory(layoutPartition(), PartitionPurgeDecommitEmptyPages);
  91 }
  92
  93 void Partitions::reportMemoryUsageHistogram()
  94 {
  95     static size_t supportedMaxSizeInMB = 4 * 1024;
  96     static size_t observedMaxSizeInMB = 0;
  97
  98     if (!m_histogramEnumeration)
  99         return;
 100     // We only report the memory in the main thread.
 101     if (!isMainThread())
 102         return;
 103     // +1 is for rounding up the sizeInMB.
 104     size_t sizeInMB = Partitions::totalSizeOfCommittedPages() / 1024 / 1024 + 1;
 105     if (sizeInMB >= supportedMaxSizeInMB)
 106         sizeInMB = supportedMaxSizeInMB - 1;
 107     if (sizeInMB > observedMaxSizeInMB) {
 108         // Send a UseCounter only when we see the highest memory usage
 109         // we've ever seen.
 110         m_histogramEnumeration("PartitionAlloc.CommittedSize", sizeInMB, supportedMaxSizeInMB);
 111         observedMaxSizeInMB = sizeInMB;
 112     }
 113 }
 114
 115 void Partitions::dumpMemoryStats(bool isLightDump, PartitionStatsDumper* partitionStatsDumper)
 116 {
 117     // Object model and rendering partitions are not thread safe and can be
 118     // accessed only on the main thread.
 119     ASSERT(isMainThread());
 120
 121     partitionDumpStatsGeneric(fastMallocPartition(), "fast_malloc", isLightDump, partitionStatsDumper);
 122     partitionDumpStatsGeneric(bufferPartition(), "buffer", isLightDump, partitionStatsDumper);
 123     partitionDumpStats(nodePartition(), "node", isLightDump, partitionStatsDumper);
 124     partitionDumpStats(layoutPartition(), "layout", isLightDump, partitionStatsDumper);
 125 }
 126
 127 static NEVER_INLINE void partitionsOutOfMemoryUsing2G()
 128 {
 129     size_t signature = 2UL * 1024 * 1024 * 1024;
 130     alias(&signature);
 131     IMMEDIATE_CRASH();
 132 }
 133
 134 static NEVER_INLINE void partitionsOutOfMemoryUsing1G()
 135 {
 136     size_t signature = 1UL * 1024 * 1024 * 1024;
 137     alias(&signature);
 138     IMMEDIATE_CRASH();
 139 }
 140
 141 static NEVER_INLINE void partitionsOutOfMemoryUsing512M()
 142 {
 143     size_t signature = 512 * 1024 * 1024;
 144     alias(&signature);
 145     IMMEDIATE_CRASH();
 146 }
 147
 148 static NEVER_INLINE void partitionsOutOfMemoryUsing256M()
 149 {
 150     size_t signature = 256 * 1024 * 1024;
 151     alias(&signature);
 152     IMMEDIATE_CRASH();
 153 }
 154
 155 static NEVER_INLINE void partitionsOutOfMemoryUsing128M()
 156 {
 157     size_t signature = 128 * 1024 * 1024;
 158     alias(&signature);
 159     IMMEDIATE_CRASH();
 160 }
 161
 162 static NEVER_INLINE void partitionsOutOfMemoryUsing64M()
 163 {
 164     size_t signature = 64 * 1024 * 1024;
 165     alias(&signature);
 166     IMMEDIATE_CRASH();
 167 }
 168
 169 static NEVER_INLINE void partitionsOutOfMemoryUsing32M()
 170 {
 171     size_t signature = 32 * 1024 * 1024;
 172     alias(&signature);
 173     IMMEDIATE_CRASH();
 174 }
 175
 176 static NEVER_INLINE void partitionsOutOfMemoryUsing16M()
 177 {
 178     size_t signature = 16 * 1024 * 1024;
 179     alias(&signature);
 180     IMMEDIATE_CRASH();
 181 }
 182
 183 static NEVER_INLINE void partitionsOutOfMemoryUsingLessThan16M()
 184 {
 185     size_t signature = 16 * 1024 * 1024 - 1;
 186     alias(&signature);
 187     IMMEDIATE_CRASH();
 188 }
 189
 190 void Partitions::handleOutOfMemory()
 191 {
 192     volatile size_t totalUsage = totalSizeOfCommittedPages();
 193
 194     if (totalUsage >= 2UL * 1024 * 1024 * 1024)
 195         partitionsOutOfMemoryUsing2G();
 196     if (totalUsage >= 1UL * 1024 * 1024 * 1024)
 197         partitionsOutOfMemoryUsing1G();
 198     if (totalUsage >= 512 * 1024 * 1024)
 199         partitionsOutOfMemoryUsing512M();
 200     if (totalUsage >= 256 * 1024 * 1024)
 201         partitionsOutOfMemoryUsing256M();
 202     if (totalUsage >= 128 * 1024 * 1024)
 203         partitionsOutOfMemoryUsing128M();
 204     if (totalUsage >= 64 * 1024 * 1024)
 205         partitionsOutOfMemoryUsing64M();
 206     if (totalUsage >= 32 * 1024 * 1024)
 207         partitionsOutOfMemoryUsing32M();
 208     if (totalUsage >= 16 * 1024 * 1024)
 209         partitionsOutOfMemoryUsing16M();
 210     partitionsOutOfMemoryUsingLessThan16M();
 211 }
 212
 213 } // namespace WTF