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// Copyright 2013 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 "base/process/process_metrics.h"
#include <utility>
#include "base/check.h"
#include "base/notreached.h"
#include "base/numerics/safe_conversions.h"
#include "base/values.h"
#include "build/build_config.h"
namespace base {
namespace {
int CalculateEventsPerSecond(uint64_t event_count,
uint64_t* last_event_count,
base::TimeTicks* last_calculated) {
const base::TimeTicks time = base::TimeTicks::Now();
int events_per_second = 0;
if (*last_event_count != 0) {
const int64_t events_delta = event_count - *last_event_count;
const base::TimeDelta time_delta = time - *last_calculated;
DCHECK(!time_delta.is_zero());
events_per_second = ClampRound(events_delta / time_delta.InSecondsF());
}
*last_calculated = time;
*last_event_count = event_count;
return events_per_second;
}
} // namespace
SystemMemoryInfoKB::SystemMemoryInfoKB() = default;
SystemMemoryInfoKB::SystemMemoryInfoKB(const SystemMemoryInfoKB& other) =
default;
SystemMetrics::SystemMetrics() {
committed_memory_ = 0;
}
SystemMetrics SystemMetrics::Sample() {
SystemMetrics system_metrics;
system_metrics.committed_memory_ = GetSystemCommitCharge();
#if defined(OS_LINUX) || defined(OS_CHROMEOS) || defined(OS_ANDROID)
GetSystemMemoryInfo(&system_metrics.memory_info_);
GetVmStatInfo(&system_metrics.vmstat_info_);
GetSystemDiskInfo(&system_metrics.disk_info_);
#endif
#if defined(OS_CHROMEOS) || BUILDFLAG(IS_LACROS)
GetSwapInfo(&system_metrics.swap_info_);
GetGraphicsMemoryInfo(&system_metrics.gpu_memory_info_);
#endif
#if defined(OS_WIN)
GetSystemPerformanceInfo(&system_metrics.performance_);
#endif
return system_metrics;
}
std::unique_ptr<Value> SystemMetrics::ToValue() const {
std::unique_ptr<DictionaryValue> res(new DictionaryValue());
res->SetIntKey("committed_memory", static_cast<int>(committed_memory_));
#if defined(OS_LINUX) || defined(OS_CHROMEOS) || defined(OS_ANDROID)
std::unique_ptr<DictionaryValue> meminfo = memory_info_.ToValue();
std::unique_ptr<DictionaryValue> vmstat = vmstat_info_.ToValue();
meminfo->MergeDictionary(vmstat.get());
res->Set("meminfo", std::move(meminfo));
res->Set("diskinfo", disk_info_.ToValue());
#endif
#if defined(OS_CHROMEOS) || BUILDFLAG(IS_LACROS)
res->Set("swapinfo", swap_info_.ToValue());
res->Set("gpu_meminfo", gpu_memory_info_.ToValue());
#endif
#if defined(OS_WIN)
res->Set("perfinfo", performance_.ToValue());
#endif
return std::move(res);
}
std::unique_ptr<ProcessMetrics> ProcessMetrics::CreateCurrentProcessMetrics() {
#if !defined(OS_MAC)
return CreateProcessMetrics(base::GetCurrentProcessHandle());
#else
return CreateProcessMetrics(base::GetCurrentProcessHandle(), nullptr);
#endif // !defined(OS_MAC)
}
#if !defined(OS_FREEBSD) || !defined(OS_POSIX)
double ProcessMetrics::GetPlatformIndependentCPUUsage() {
TimeDelta cumulative_cpu = GetCumulativeCPUUsage();
TimeTicks time = TimeTicks::Now();
if (last_cumulative_cpu_.is_zero()) {
// First call, just set the last values.
last_cumulative_cpu_ = cumulative_cpu;
last_cpu_time_ = time;
return 0;
}
TimeDelta system_time_delta = cumulative_cpu - last_cumulative_cpu_;
TimeDelta time_delta = time - last_cpu_time_;
DCHECK(!time_delta.is_zero());
if (time_delta.is_zero())
return 0;
last_cumulative_cpu_ = cumulative_cpu;
last_cpu_time_ = time;
return 100.0 * system_time_delta / time_delta;
}
#endif
#if defined(OS_APPLE) || defined(OS_LINUX) || defined(OS_CHROMEOS) || \
defined(OS_AIX)
int ProcessMetrics::CalculateIdleWakeupsPerSecond(
uint64_t absolute_idle_wakeups) {
return CalculateEventsPerSecond(absolute_idle_wakeups,
&last_absolute_idle_wakeups_,
&last_idle_wakeups_time_);
}
#else
int ProcessMetrics::GetIdleWakeupsPerSecond() {
NOTIMPLEMENTED(); // http://crbug.com/120488
return 0;
}
#endif // defined(OS_APPLE) || defined(OS_LINUX) || defined(OS_CHROMEOS) ||
// defined(OS_AIX)
#if defined(OS_APPLE)
int ProcessMetrics::CalculatePackageIdleWakeupsPerSecond(
uint64_t absolute_package_idle_wakeups) {
return CalculateEventsPerSecond(absolute_package_idle_wakeups,
&last_absolute_package_idle_wakeups_,
&last_package_idle_wakeups_time_);
}
#endif // defined(OS_APPLE)
#if !defined(OS_WIN)
uint64_t ProcessMetrics::GetCumulativeDiskUsageInBytes() {
// Not implemented.
return 0;
}
#endif
uint64_t ProcessMetrics::GetDiskUsageBytesPerSecond() {
uint64_t cumulative_disk_usage = GetCumulativeDiskUsageInBytes();
return CalculateEventsPerSecond(cumulative_disk_usage,
&last_cumulative_disk_usage_,
&last_disk_usage_time_);
}
} // namespace base
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