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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/logging.h"
#include "base/values.h"
#include "build/build_config.h"
#if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_AIX)
namespace {
int CalculateEventsPerSecond(uint64_t event_count,
uint64_t* last_event_count,
base::TimeTicks* last_calculated) {
base::TimeTicks time = base::TimeTicks::Now();
if (*last_event_count == 0) {
// First call, just set the last values.
*last_calculated = time;
*last_event_count = event_count;
return 0;
}
int64_t events_delta = event_count - *last_event_count;
int64_t time_delta = (time - *last_calculated).InMicroseconds();
if (time_delta == 0) {
NOTREACHED();
return 0;
}
*last_calculated = time;
*last_event_count = event_count;
int64_t events_delta_for_ms =
events_delta * base::Time::kMicrosecondsPerSecond;
// Round the result up by adding 1/2 (the second term resolves to 1/2 without
// dropping down into floating point).
return (events_delta_for_ms + time_delta / 2) / time_delta;
}
} // namespace
#endif // defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_AIX)
namespace base {
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_ANDROID)
GetSystemMemoryInfo(&system_metrics.memory_info_);
GetVmStatInfo(&system_metrics.vmstat_info_);
GetSystemDiskInfo(&system_metrics.disk_info_);
#endif
#if defined(OS_CHROMEOS)
GetSwapInfo(&system_metrics.swap_info_);
#endif
return system_metrics;
}
std::unique_ptr<Value> SystemMetrics::ToValue() const {
std::unique_ptr<DictionaryValue> res(new DictionaryValue());
res->SetInteger("committed_memory", static_cast<int>(committed_memory_));
#if defined(OS_LINUX) || 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)
res->Set("swapinfo", swap_info_.ToValue());
#endif
return std::move(res);
}
std::unique_ptr<ProcessMetrics> ProcessMetrics::CreateCurrentProcessMetrics() {
#if !defined(OS_MACOSX) || defined(OS_IOS)
return CreateProcessMetrics(base::GetCurrentProcessHandle());
#else
return CreateProcessMetrics(base::GetCurrentProcessHandle(), nullptr);
#endif // !defined(OS_MACOSX) || defined(OS_IOS)
}
#if defined(OS_MACOSX) || defined(OS_LINUX) || 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_MACOSX) || defined(OS_LINUX) || defined(OS_AIX)
#if defined(OS_MACOSX)
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_MACOSX)
} // namespace base
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