Add partitionsOutOfMemoryUsingXXX to know Blink memory usage from OOM crash reports

Source/wtf/Partitions.cpp

 /*
  * 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
@@ skipping 13 matching lines @@
  * 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 "config.h"
 #include "wtf/Partitions.h"
 
+#include "wtf/Alias.h"
 #include "wtf/DefaultAllocator.h"
 #include "wtf/FastMalloc.h"
 #include "wtf/MainThread.h"
 
 namespace WTF {
 
 int Partitions::s_initializationLock = 0;
 bool Partitions::s_initialized = false;
 
 PartitionAllocatorGeneric Partitions::m_fastMallocAllocator;
 PartitionAllocatorGeneric Partitions::m_bufferAllocator;
 SizeSpecificPartitionAllocator<3328> Partitions::m_nodeAllocator;
 SizeSpecificPartitionAllocator<1024> Partitions::m_layoutAllocator;
 HistogramEnumerationFunction Partitions::m_histogramEnumeration = nullptr;
 
 void Partitions::initialize()
 {
     spinLockLock(&s_initializationLock);
 
     if (!s_initialized) {
+        partitionAllocGlobalInit(&Partitions::handleOutOfMemory);
         m_fastMallocAllocator.init();
         m_bufferAllocator.init();
         m_nodeAllocator.init();
         m_layoutAllocator.init();
         s_initialized = true;
     }
 
     spinLockUnlock(&s_initializationLock);
 }
 
@@ skipping 51 matching lines @@
     // Object model and rendering partitions are not thread safe and can be
     // accessed only on the main thread.
     ASSERT(isMainThread());
 
     partitionDumpStatsGeneric(fastMallocPartition(), "fast_malloc_partition", isLightDump, partitionStatsDumper);
     partitionDumpStatsGeneric(bufferPartition(), "buffer_partition", isLightDump, partitionStatsDumper);
     partitionDumpStats(nodePartition(), "node_partition", isLightDump, partitionStatsDumper);
     partitionDumpStats(layoutPartition(), "layout_partition", isLightDump, partitionStatsDumper);
 }
 
+static NEVER_INLINE void partitionsOutOfMemoryUsing2G()
+{
+    size_t signature = 2UL * 1024 * 1024 * 1024;
+    alias(&signature);
+    IMMEDIATE_CRASH();
+}
+
+static NEVER_INLINE void partitionsOutOfMemoryUsing1G()
+{
+    size_t signature = 1UL * 1024 * 1024 * 1024;
+    alias(&signature);
+    IMMEDIATE_CRASH();
+}
+
+static NEVER_INLINE void partitionsOutOfMemoryUsing512M()
+{
+    size_t signature = 512 * 1024 * 1024;
+    alias(&signature);
+    IMMEDIATE_CRASH();
+}
+
+static NEVER_INLINE void partitionsOutOfMemoryUsing256M()
+{
+    size_t signature = 256 * 1024 * 1024;
+    alias(&signature);
+    IMMEDIATE_CRASH();
+}
+
+static NEVER_INLINE void partitionsOutOfMemoryUsing128M()
+{
+    size_t signature = 128 * 1024 * 1024;
+    alias(&signature);
+    IMMEDIATE_CRASH();
+}
+
+static NEVER_INLINE void partitionsOutOfMemoryUsing64M()
+{
+    size_t signature = 64 * 1024 * 1024;
+    alias(&signature);
+    IMMEDIATE_CRASH();
+}
+
+static NEVER_INLINE void partitionsOutOfMemoryUsing32M()
+{
+    size_t signature = 32 * 1024 * 1024;
+    alias(&signature);
+    IMMEDIATE_CRASH();
+}
+
+static NEVER_INLINE void partitionsOutOfMemoryUsing16M()
+{
+    size_t signature = 16 * 1024 * 1024;
+    alias(&signature);
+    IMMEDIATE_CRASH();
+}
+
+static NEVER_INLINE void partitionsOutOfMemoryUsingLessThan16M()
+{
+    size_t signature = 16 * 1024 * 1024 - 1;
+    alias(&signature);
+    IMMEDIATE_CRASH();
+}
+
+void Partitions::handleOutOfMemory()
+{
+    volatile size_t totalUsage = totalSizeOfCommittedPages();
+
+    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