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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/controller/memory_usage_monitor_win.h"
#include <tchar.h>
#include <windows.h>
#include <psapi.h>
#include "third_party/blink/public/platform/platform.h"
namespace blink {
namespace {
static MemoryUsageMonitor* g_instance_for_testing = nullptr;
} // namespace
// static
MemoryUsageMonitor& MemoryUsageMonitor::Instance() {
DEFINE_STATIC_LOCAL(MemoryUsageMonitorWin, monitor, ());
return g_instance_for_testing ? *g_instance_for_testing : monitor;
}
// static
void MemoryUsageMonitor::SetInstanceForTesting(MemoryUsageMonitor* instance) {
g_instance_for_testing = instance;
}
// CalculateProcessMemoryFootprint is generated from:
// - CalculatePrivateFootprintKb defined in
// //services/resource_coordinator/memory_instrumentation/queued_request_dispatcher.cc
// - OSMetrics::FillOSMemoryDump defined in
// //services/resource_coordinator/public/cpp/memory_instrumentation/os_metrics_win.cc
bool MemoryUsageMonitorWin::CalculateProcessMemoryFootprint(
uint64_t* private_footprint) {
PROCESS_MEMORY_COUNTERS_EX pmc;
if (!::GetProcessMemoryInfo(::GetCurrentProcess(),
reinterpret_cast<PROCESS_MEMORY_COUNTERS*>(&pmc),
sizeof(pmc)))
return false;
*private_footprint = pmc.PrivateUsage;
return true;
}
void MemoryUsageMonitorWin::GetProcessMemoryUsage(MemoryUsage& usage) {
uint64_t private_footprint;
if (CalculateProcessMemoryFootprint(&private_footprint))
usage.private_footprint_bytes = static_cast<double>(private_footprint);
}
} // namespace blink
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