Add dump name for tracing in PartitionAlloc for sub-allocations

third_party/WebKit/Source/platform/PartitionAllocMemoryDumpProvider.cpp

Index: third_party/WebKit/Source/platform/PartitionAllocMemoryDumpProvider.cpp
diff --git a/third_party/WebKit/Source/platform/PartitionAllocMemoryDumpProvider.cpp b/third_party/WebKit/Source/platform/PartitionAllocMemoryDumpProvider.cpp
index 3f5dd7c48d0177125c6eb69e26ee4419b34ee1dc..5486a87bd3e0ecca9f359c217f988cefe25a285e 100644
--- a/third_party/WebKit/Source/platform/PartitionAllocMemoryDumpProvider.cpp
+++ b/third_party/WebKit/Source/platform/PartitionAllocMemoryDumpProvider.cpp
@@ -16,6 +16,7 @@ namespace {
 using namespace WTF;
 
 const char kPartitionAllocDumpName[] = "partition_alloc";
+const char kPartitionAllocPoolName[] = "partition_alloc/allocated_objects";
 const char kPartitionsDumpName[] = "partitions";

[haraken, 2015/09/29 16:20:17]

How about just defining these constant strings in Partitions.h instead of
setting them dynamically?

 
 String getPartitionDumpName(const char* partitionName)
@@ -100,8 +101,7 @@ bool PartitionAllocMemoryDumpProvider::onMemoryDump(WebMemoryDumpLevelOfDetail l
     // This method calls memoryStats.partitionsDumpBucketStats with memory statistics.
     WTF::Partitions::dumpMemoryStats(levelOfDetail == WebMemoryDumpLevelOfDetail::Light, &partitionStatsDumper);
 
-    WebMemoryAllocatorDump* allocatedObjectsDump = memoryDump->createMemoryAllocatorDump(
-        String::format("%s/allocated_objects", kPartitionAllocDumpName));
+    WebMemoryAllocatorDump* allocatedObjectsDump = memoryDump->createMemoryAllocatorDump(kPartitionAllocPoolName);
     allocatedObjectsDump->AddScalar("size", "bytes", partitionStatsDumper.totalActiveBytes());
     memoryDump->AddOwnershipEdge(allocatedObjectsDump->guid(), partitionsDump->guid());
 
@@ -110,6 +110,7 @@ bool PartitionAllocMemoryDumpProvider::onMemoryDump(WebMemoryDumpLevelOfDetail l
 
 PartitionAllocMemoryDumpProvider::PartitionAllocMemoryDumpProvider()
 {
+    Partitions::setAllocatorPoolNameForTracing(kPartitionAllocPoolName);
 }
 
 PartitionAllocMemoryDumpProvider::~PartitionAllocMemoryDumpProvider()