Add GPU memory tab to the task manager.

content/common/gpu/gpu_memory_manager.cc

 // Copyright (c) 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 "content/common/gpu/gpu_memory_manager.h"
 
 #if defined(ENABLE_GPU)
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/message_loop.h"
+#include "base/process_util.h"
 #include "base/string_number_conversions.h"
 #include "content/common/gpu/gpu_command_buffer_stub.h"
 #include "content/common/gpu/gpu_memory_allocation.h"
 #include "gpu/command_buffer/service/gpu_switches.h"
 
 namespace {
 
 const int kDelayedScheduleManageTimeoutMs = 67;
 
 bool IsInSameContextShareGroupAsAnyOf(
@@ skipping 60 matching lines @@
   } else {
 #if defined(OS_ANDROID)
     bytes_available_gpu_memory_ = 64 * 1024 * 1024;
 #else
     bytes_available_gpu_memory_ = 448 * 1024 * 1024;
 #endif
   }
 }
 
 GpuMemoryManager::~GpuMemoryManager() {
+  DCHECK(tracking_groups_.empty());
 }
 
 bool GpuMemoryManager::StubWithSurfaceComparator::operator()(
     GpuCommandBufferStubBase* lhs,
     GpuCommandBufferStubBase* rhs) {
   DCHECK(lhs->has_surface_state() && rhs->has_surface_state());
   const GpuCommandBufferStubBase::SurfaceState& lhs_ss = lhs->surface_state();
   const GpuCommandBufferStubBase::SurfaceState& rhs_ss = rhs->surface_state();
   if (lhs_ss.visible)
     return !rhs_ss.visible || (lhs_ss.last_used_time > rhs_ss.last_used_time);
@@ skipping 38 matching lines @@
     }
   }
   if (new_size != old_size) {
     TRACE_COUNTER_ID1("GpuMemoryManager",
                       "GpuMemoryUsage",
                       this,
                       bytes_allocated_current_);
   }
 }
 
+void GpuMemoryManager::AddTrackingGroup(GpuMemoryTrackingGroup* tracking_group)
+{

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Done.

+  tracking_groups_.insert(tracking_group);
+}
+
+void GpuMemoryManager::RemoveTrackingGroup(
+  GpuMemoryTrackingGroup* tracking_group)

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Done.

+{

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Done.

+  tracking_groups_.erase(tracking_group);
+}
+
+void GpuMemoryManager::GetVidmem(content::GPUVidmem& vidmem) const
+{

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Done.

+  // For each context group, assign its memory usage to its PID
+  vidmem.process_map.clear();
+  for (std::set<GpuMemoryTrackingGroup*>::const_iterator i =
+       tracking_groups_.begin(); i != tracking_groups_.end(); ++i) {
+    const GpuMemoryTrackingGroup* tracking_group = (*i);
+    vidmem.process_map[tracking_group->GetPid()].vidmem +=
+      tracking_group->GetSize();

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Done.

+  }
+
+  // Assign the total across all processes in the GPU process
+  vidmem.process_map[base::GetCurrentProcId()].vidmem =
+    bytes_allocated_current_;

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Done.

+  vidmem.process_map[base::GetCurrentProcId()].has_duplicates = true;
+}
+
 // The current Manage algorithm simply classifies contexts (stubs) into
 // "foreground", "background", or "hibernated" categories.
 // For each of these three categories, there are predefined memory allocation
 // limits and front/backbuffer states.
 //
 // Stubs may or may not have a surfaces, and the rules are different for each.
 //
 // The rules for categorizing contexts with a surface are:
 //  1. Foreground: All visible surfaces.
 //                 * Must have both front and back buffer.
@@ skipping 138 matching lines @@
       false);
 
   AssignMemoryAllocations(
       &stub_memory_stats_for_last_manage_,
       stubs_without_surface_hibernated,
       GpuMemoryAllocation(0, GpuMemoryAllocation::kHasNoBuffers),
       false);
 }
 
 #endif