Add memory tracking to TexturePool.

cc/resources/resource_pool.cc

 // Copyright 2012 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 "cc/resources/resource_pool.h"
 
+#include <algorithm>
+
+#include "base/format_macros.h"
+#include "base/strings/stringprintf.h"
+#include "base/thread_task_runner_handle.h"
+#include "base/trace_event/memory_dump_manager.h"
 #include "cc/resources/resource_provider.h"
 #include "cc/resources/resource_util.h"
 #include "cc/resources/scoped_resource.h"
 
 namespace cc {
 
 ResourcePool::ResourcePool(ResourceProvider* resource_provider, GLenum target)
     : resource_provider_(resource_provider),
       target_(target),
       max_memory_usage_bytes_(0),
       max_unused_memory_usage_bytes_(0),
       max_resource_count_(0),
       memory_usage_bytes_(0),
       unused_memory_usage_bytes_(0),
-      resource_count_(0) {}
+      resource_count_(0) {
+  base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(
+      this, base::ThreadTaskRunnerHandle::Get());
+}
 
 ResourcePool::~ResourcePool() {
+  base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(
+      this);
   while (!busy_resources_.empty()) {
     auto const& front = busy_resources_.front();
     DidFinishUsingResource(front.resource, front.content_id);
     busy_resources_.pop_front();
   }
 
   SetResourceUsageLimits(0, 0, 0);
   DCHECK_EQ(0u, unused_resources_.size());
   DCHECK_EQ(0u, memory_usage_bytes_);
   DCHECK_EQ(0u, unused_memory_usage_bytes_);
@@ skipping 126 matching lines @@
   }
 }
 
 void ResourcePool::DidFinishUsingResource(ScopedResource* resource,
                                           uint64_t content_id) {
   unused_memory_usage_bytes_ += ResourceUtil::UncheckedSizeInBytes<size_t>(
       resource->size(), resource->format());
   unused_resources_.push_back(PoolResource(resource, content_id));
 }
 
+bool ResourcePool::OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd) {
+  for (const auto& resource : unused_resources_) {
+    resource.OnMemoryDump(pmd, true /* is_free */);
+  }
+  for (const auto& resource : busy_resources_) {
+    resource.OnMemoryDump(pmd, false /* is_free */);
+  }
+  // TODO(ericrk): Dump vended out resources once that data is available.
+  // crbug.com/516541
+  return true;
+}
+
+void ResourcePool::PoolResource::OnMemoryDump(

[reveman, 2015/08/05 01:26:59]

nit: definition of nested class usually go before definition of enclosing class

[ericrk, 2015/08/05 20:41:08]

Done.

+    base::trace_event::ProcessMemoryDump* pmd,
+    bool is_free) const {
+  // TODO(ericrk): Add per-compositor ID in name.
+  std::string parent_node =
+      base::StringPrintf("cc/resource_memory/resource_%d", resource->id());
+  std::string dump_name =
+      base::StringPrintf("cc/tile_memory/resource_%d", resource->id());
+  base::trace_event::MemoryAllocatorDump* dump =
+      pmd->CreateAllocatorDump(dump_name);
+
+  pmd->AddSuballocation(dump->guid(), parent_node);
+
+  uint64_t total_bytes = ResourceUtil::UncheckedSizeInBytesAligned<size_t>(
+      resource->size(), resource->format());
+  dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
+                  base::trace_event::MemoryAllocatorDump::kUnitsBytes,
+                  total_bytes);
+  dump->AddScalar("free_size",
+                  base::trace_event::MemoryAllocatorDump::kUnitsBytes,
+                  is_free ? total_bytes : 0);
+}
+
 }  // namespace cc