Add BACKGROUND dump mode to various GPU/CC MemoryDumpProviders

gpu/command_buffer/client/mapped_memory.cc

 // Copyright (c) 2011 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 "gpu/command_buffer/client/mapped_memory.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 151 matching lines @@
       iter = chunks_.erase(iter);
     } else {
       ++iter;
     }
   }
 }
 
 bool MappedMemoryManager::OnMemoryDump(
     const base::trace_event::MemoryDumpArgs& args,
     base::trace_event::ProcessMemoryDump* pmd) {
+  using base::trace_event::MemoryAllocatorDump;
+  using base::trace_event::MemoryDumpLevelOfDetail;
+
+  if (args.level_of_detail == MemoryDumpLevelOfDetail::BACKGROUND) {
+    std::string dump_name =
+        base::StringPrintf("gpu/mapped_memory/manager_%d", tracing_id_);
+    MemoryAllocatorDump* dump = pmd->CreateAllocatorDump(dump_name);
+    dump->AddScalar(MemoryAllocatorDump::kNameSize,
+                    MemoryAllocatorDump::kUnitsBytes, allocated_memory_);
+
+    // Early out, no need for more detail in a BACKGROUND dump.
+    return true;
+  }
+
   const uint64_t tracing_process_id =
       base::trace_event::MemoryDumpManager::GetInstance()
           ->GetTracingProcessId();
-
   for (const auto& chunk : chunks_) {
     std::string dump_name = base::StringPrintf(
         "gpu/mapped_memory/manager_%d/chunk_%d", tracing_id_, chunk->shm_id());
-    base::trace_event::MemoryAllocatorDump* dump =
-        pmd->CreateAllocatorDump(dump_name);
+    MemoryAllocatorDump* dump = pmd->CreateAllocatorDump(dump_name);
 
-    dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
-                    base::trace_event::MemoryAllocatorDump::kUnitsBytes,
-                    chunk->GetSize());
-    dump->AddScalar("free_size",
-                    base::trace_event::MemoryAllocatorDump::kUnitsBytes,
+    dump->AddScalar(MemoryAllocatorDump::kNameSize,
+                    MemoryAllocatorDump::kUnitsBytes, chunk->GetSize());
+    dump->AddScalar("free_size", MemoryAllocatorDump::kUnitsBytes,
                     chunk->GetFreeSize());
 
     auto guid = GetBufferGUIDForTracing(tracing_process_id, chunk->shm_id());
 
     const int kImportance = 2;
     pmd->CreateSharedGlobalAllocatorDump(guid);
     pmd->AddOwnershipEdge(dump->guid(), guid, kImportance);
   }
 
   return true;
@@ skipping 15 matching lines @@
 void ScopedMappedMemoryPtr::Reset(uint32_t new_size) {
   Release();
 
   if (new_size) {
     buffer_ = mapped_memory_manager_->Alloc(new_size, &shm_id_, &shm_offset_);
     size_ = buffer_ ? new_size : 0;
   }
 }
 
 }  // namespace gpu