Move base to DEPS

base/trace_event/process_memory_totals_dump_provider.cc

-// Copyright 2015 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/trace_event/process_memory_totals_dump_provider.h"
-
-#include "base/process/process_metrics.h"
-#include "base/trace_event/process_memory_dump.h"
-#include "base/trace_event/process_memory_totals.h"
-
-#if defined(OS_LINUX) || defined(OS_ANDROID)
-#include <fcntl.h>
-
-#include "base/files/file_util.h"
-
-namespace {
-bool kernel_supports_rss_peak_reset = true;
-const char kClearPeakRssCommand[] = "5";
-}
-#endif
-
-namespace base {
-namespace trace_event {
-
-// static
-uint64 ProcessMemoryTotalsDumpProvider::rss_bytes_for_testing = 0;
-
-namespace {
-
-ProcessMetrics* CreateProcessMetricsForCurrentProcess() {
-#if !defined(OS_MACOSX) || defined(OS_IOS)
-  return ProcessMetrics::CreateProcessMetrics(GetCurrentProcessHandle());
-#else
-  return ProcessMetrics::CreateProcessMetrics(GetCurrentProcessHandle(), NULL);
-#endif
-}
-}  // namespace
-
-// static
-ProcessMemoryTotalsDumpProvider*
-ProcessMemoryTotalsDumpProvider::GetInstance() {
-  return Singleton<
-      ProcessMemoryTotalsDumpProvider,
-      LeakySingletonTraits<ProcessMemoryTotalsDumpProvider>>::get();
-}
-
-ProcessMemoryTotalsDumpProvider::ProcessMemoryTotalsDumpProvider()
-    : process_metrics_(CreateProcessMetricsForCurrentProcess()) {
-}
-
-ProcessMemoryTotalsDumpProvider::~ProcessMemoryTotalsDumpProvider() {
-}
-
-// Called at trace dump point time. Creates a snapshot the memory counters for
-// the current process.
-bool ProcessMemoryTotalsDumpProvider::OnMemoryDump(ProcessMemoryDump* pmd) {
-  const uint64 rss_bytes = rss_bytes_for_testing
-                               ? rss_bytes_for_testing
-                               : process_metrics_->GetWorkingSetSize();
-
-  uint64 peak_rss_bytes = 0;
-
-#if !defined(OS_IOS)
-  peak_rss_bytes = process_metrics_->GetPeakWorkingSetSize();
-#if defined(OS_LINUX) || defined(OS_ANDROID)
-  if (kernel_supports_rss_peak_reset) {
-    // TODO(ssid): Fix crbug.com/461788 to write to the file from sandboxed
-    // processes.
-    int clear_refs_fd = open("/proc/self/clear_refs", O_WRONLY);
-    if (clear_refs_fd > 0 &&
-        WriteFileDescriptor(clear_refs_fd, kClearPeakRssCommand,
-                            sizeof(kClearPeakRssCommand))) {
-      pmd->process_totals()->set_is_peak_rss_resetable(true);
-    } else {
-      kernel_supports_rss_peak_reset = false;
-    }
-    close(clear_refs_fd);
-  }
-#endif  // defined(OS_LINUX) || defined(OS_ANDROID)
-#endif  // !defined(OS_IOS)
-
-  if (rss_bytes > 0) {
-    pmd->process_totals()->set_resident_set_bytes(rss_bytes);
-    pmd->process_totals()->set_peak_resident_set_bytes(peak_rss_bytes);
-    pmd->set_has_process_totals();
-    return true;
-  }
-
-  return false;
-}
-
-}  // namespace trace_event
-}  // namespace base