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// 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"
#include <algorithm>
#include "base/bind.h"
#include "base/command_line.h"
#include "base/message_loop/message_loop.h"
#include "base/process/process_handle.h"
#include "base/strings/string_number_conversions.h"
#include "base/trace_event/trace_event.h"
#include "content/common/gpu/gpu_channel_manager.h"
#include "content/common/gpu/gpu_channel_manager_delegate.h"
#include "content/common/gpu/gpu_memory_tracking.h"
#include "content/common/gpu/gpu_memory_uma_stats.h"
#include "gpu/command_buffer/common/gpu_memory_allocation.h"
#include "gpu/command_buffer/service/gpu_switches.h"
using gpu::MemoryAllocation;
namespace content {
namespace {
const uint64_t kBytesAllocatedStep = 16 * 1024 * 1024;
void TrackValueChanged(uint64_t old_size,
uint64_t new_size,
uint64_t* total_size) {
DCHECK(new_size > old_size || *total_size >= (old_size - new_size));
*total_size += (new_size - old_size);
}
}
GpuMemoryManager::GpuMemoryManager(GpuChannelManager* channel_manager)
: channel_manager_(channel_manager),
bytes_allocated_current_(0),
bytes_allocated_historical_max_(0) {}
GpuMemoryManager::~GpuMemoryManager() {
DCHECK(tracking_groups_.empty());
DCHECK(!bytes_allocated_current_);
}
void GpuMemoryManager::TrackMemoryAllocatedChange(
GpuMemoryTrackingGroup* tracking_group,
uint64_t old_size,
uint64_t new_size) {
TrackValueChanged(old_size, new_size, &tracking_group->size_);
TrackValueChanged(old_size, new_size, &bytes_allocated_current_);
if (GetCurrentUsage() > bytes_allocated_historical_max_ +
kBytesAllocatedStep) {
bytes_allocated_historical_max_ = GetCurrentUsage();
// If we're blowing into new memory usage territory, spam the browser
// process with the most up-to-date information about our memory usage.
SendUmaStatsToHost();
}
}
bool GpuMemoryManager::EnsureGPUMemoryAvailable(uint64_t /* size_needed */) {
// TODO: Check if there is enough space. Lose contexts until there is.
return true;
}
uint64_t GpuMemoryManager::GetTrackerMemoryUsage(
gpu::gles2::MemoryTracker* tracker) const {
TrackingGroupMap::const_iterator tracking_group_it =
tracking_groups_.find(tracker);
DCHECK(tracking_group_it != tracking_groups_.end());
return tracking_group_it->second->GetSize();
}
GpuMemoryTrackingGroup* GpuMemoryManager::CreateTrackingGroup(
base::ProcessId pid, gpu::gles2::MemoryTracker* memory_tracker) {
GpuMemoryTrackingGroup* tracking_group = new GpuMemoryTrackingGroup(
pid, memory_tracker, this);
DCHECK(!tracking_groups_.count(tracking_group->GetMemoryTracker()));
tracking_groups_.insert(std::make_pair(tracking_group->GetMemoryTracker(),
tracking_group));
return tracking_group;
}
void GpuMemoryManager::OnDestroyTrackingGroup(
GpuMemoryTrackingGroup* tracking_group) {
DCHECK(tracking_groups_.count(tracking_group->GetMemoryTracker()));
tracking_groups_.erase(tracking_group->GetMemoryTracker());
}
void GpuMemoryManager::GetVideoMemoryUsageStats(
GPUVideoMemoryUsageStats* video_memory_usage_stats) const {
// For each context group, assign its memory usage to its PID
video_memory_usage_stats->process_map.clear();
for (TrackingGroupMap::const_iterator i =
tracking_groups_.begin(); i != tracking_groups_.end(); ++i) {
const GpuMemoryTrackingGroup* tracking_group = i->second;
video_memory_usage_stats->process_map[
tracking_group->GetPid()].video_memory += tracking_group->GetSize();
}
// Assign the total across all processes in the GPU process
video_memory_usage_stats->process_map[
base::GetCurrentProcId()].video_memory = GetCurrentUsage();
video_memory_usage_stats->process_map[
base::GetCurrentProcId()].has_duplicates = true;
video_memory_usage_stats->bytes_allocated = GetCurrentUsage();
video_memory_usage_stats->bytes_allocated_historical_max =
bytes_allocated_historical_max_;
}
void GpuMemoryManager::SendUmaStatsToHost() {
if (!channel_manager_)
return;
GPUMemoryUmaStats params;
params.bytes_allocated_current = GetCurrentUsage();
params.bytes_allocated_max = bytes_allocated_historical_max_;
params.context_group_count = static_cast<uint32_t>(tracking_groups_.size());
channel_manager_->delegate()->GpuMemoryUmaStats(params);
}
} // namespace content
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