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) {
-  const uint64_t tracing_process_id =
-      base::trace_event::MemoryDumpManager::GetInstance()
-          ->GetTracingProcessId();
+  using base::trace_event::MemoryAllocatorDump;
+  using base::trace_event::MemoryDumpLevelOfDetail;
 
-  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);
+  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_);

[ssid, 2016/10/07 00:07:21]

return here?

[ericrk, 2016/10/13 23:58:13]

Done.

+  } else {
+    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());
+      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,
-                    chunk->GetFreeSize());
+      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());
+      auto guid = GetBufferGUIDForTracing(tracing_process_id, chunk->shm_id());
 
-    const int kImportance = 2;
-    pmd->CreateSharedGlobalAllocatorDump(guid);
-    pmd->AddOwnershipEdge(dump->guid(), guid, kImportance);
+      const int kImportance = 2;
+      pmd->CreateSharedGlobalAllocatorDump(guid);
+      pmd->AddOwnershipEdge(dump->guid(), guid, kImportance);
+    }
   }
-
   return true;
 }
 
 void ScopedMappedMemoryPtr::Release() {
   if (buffer_) {
     mapped_memory_manager_->FreePendingToken(buffer_, helper_->InsertToken());
     buffer_ = nullptr;
     size_ = 0;
     shm_id_ = 0;
     shm_offset_ = 0;
 
     if (flush_after_release_)
       helper_->CommandBufferHelper::Flush();
   }
 }
 
 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