50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
|
// 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/android/sys_utils.h"
|
||
|
|
|
||
|
|
#include <memory>
|
||
|
|
|
||
|
|
#include "base/android/build_info.h"
|
||
|
|
#include "base/base_jni_headers/SysUtils_jni.h"
|
||
|
|
#include "base/process/process_metrics.h"
|
||
|
|
#include "base/system/sys_info.h"
|
||
|
|
#include "base/trace_event/trace_event.h"
|
||
|
|
|
||
|
|
namespace base {
|
||
|
|
namespace android {
|
||
|
|
|
||
|
|
bool SysUtils::IsLowEndDeviceFromJni() {
|
||
|
|
JNIEnv* env = AttachCurrentThread();
|
||
|
|
return Java_SysUtils_isLowEndDevice(env);
|
||
|
|
}
|
||
|
|
|
||
|
|
bool SysUtils::IsCurrentlyLowMemory() {
|
||
|
|
JNIEnv* env = AttachCurrentThread();
|
||
|
|
return Java_SysUtils_isCurrentlyLowMemory(env);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Logs the number of minor / major page faults to tracing (and also the time to
|
||
|
|
// collect) the metrics. Does nothing if tracing is not enabled.
|
||
|
|
static void JNI_SysUtils_LogPageFaultCountToTracing(JNIEnv* env) {
|
||
|
|
// This is racy, but we are OK losing data, and collecting it is potentially
|
||
|
|
// expensive (reading and parsing a file).
|
||
|
|
bool enabled;
|
||
|
|
TRACE_EVENT_CATEGORY_GROUP_ENABLED("startup", &enabled);
|
||
|
|
if (!enabled)
|
||
|
|
return;
|
||
|
|
TRACE_EVENT_BEGIN2("memory", "CollectPageFaultCount", "minor", 0, "major", 0);
|
||
|
|
std::unique_ptr<base::ProcessMetrics> process_metrics(
|
||
|
|
base::ProcessMetrics::CreateProcessMetrics(
|
||
|
|
base::GetCurrentProcessHandle()));
|
||
|
|
base::PageFaultCounts counts;
|
||
|
|
process_metrics->GetPageFaultCounts(&counts);
|
||
|
|
TRACE_EVENT_END2("memory", "CollectPageFaults", "minor", counts.minor,
|
||
|
|
"major", counts.major);
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace android
|
||
|
|
|
||
|
|
} // namespace base
|