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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/memory/swap_metrics_driver_impl_mac.h"
#include <mach/mach.h>
#include <mach/mach_vm.h>
#include <memory>
#include "base/apple/mach_logging.h"
#include "base/memory/ptr_util.h"
#include "base/time/time.h"
namespace content {
// static
std::unique_ptr<SwapMetricsDriver> SwapMetricsDriver::Create(
std::unique_ptr<Delegate> delegate,
const base::TimeDelta update_interval) {
return base::WrapUnique<SwapMetricsDriver>(
new SwapMetricsDriverImplMac(std::move(delegate), update_interval));
}
SwapMetricsDriverImplMac::SwapMetricsDriverImplMac(
std::unique_ptr<Delegate> delegate,
const base::TimeDelta update_interval)
: SwapMetricsDriverImpl(std::move(delegate), update_interval),
host_(mach_host_self()) {}
SwapMetricsDriverImplMac::~SwapMetricsDriverImplMac() = default;
SwapMetricsDriver::SwapMetricsUpdateResult
SwapMetricsDriverImplMac::UpdateMetricsInternal(base::TimeDelta interval) {
vm_statistics64_data_t statistics;
mach_msg_type_number_t count = HOST_VM_INFO64_COUNT;
kern_return_t result =
host_statistics64(host_.get(), HOST_VM_INFO64,
reinterpret_cast<host_info64_t>(&statistics), &count);
if (result != KERN_SUCCESS) {
MACH_DLOG(WARNING, result) << "host_statistics64";
return SwapMetricsDriver::SwapMetricsUpdateResult::kSwapMetricsUpdateFailed;
}
DCHECK_EQ(HOST_VM_INFO64_COUNT, count);
uint64_t swapins = statistics.swapins - last_swapins_;
uint64_t swapouts = statistics.swapouts - last_swapouts_;
uint64_t decompressions = statistics.decompressions - last_decompressions_;
uint64_t compressions = statistics.compressions - last_compressions_;
last_swapins_ = statistics.swapins;
last_swapouts_ = statistics.swapouts;
last_decompressions_ = statistics.decompressions;
last_compressions_ = statistics.compressions;
if (interval.is_zero())
return SwapMetricsDriver::SwapMetricsUpdateResult::
kSwapMetricsUpdateSuccess;
delegate_->OnSwapInCount(swapins, interval);
delegate_->OnSwapOutCount(swapouts, interval);
delegate_->OnDecompressedPageCount(decompressions, interval);
delegate_->OnCompressedPageCount(compressions, interval);
return SwapMetricsDriver::SwapMetricsUpdateResult::kSwapMetricsUpdateSuccess;
}
} // namespace content
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