base/process/process_metrics_ios.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/process/process_metrics.h"
   6
   7 #include <mach/task.h>
   8
   9 #include "base/logging.h"
  10
  11 namespace base {
  12
  13 namespace {
  14
  15 bool GetTaskInfo(task_basic_info_64* task_info_data) {
  16   mach_msg_type_number_t count = TASK_BASIC_INFO_64_COUNT;
  17   kern_return_t kr = task_info(mach_task_self(),
  18                                TASK_BASIC_INFO_64,
  19                                reinterpret_cast<task_info_t>(task_info_data),
  20                                &count);
  21   return kr == KERN_SUCCESS;
  22 }
  23
  24 }  // namespace
  25
  26 SystemMemoryInfoKB::SystemMemoryInfoKB() {
  27   total = 0;
  28   free = 0;
  29 }
  30
  31 ProcessMetrics::ProcessMetrics(ProcessHandle process) {}
  32
  33 ProcessMetrics::~ProcessMetrics() {}
  34
  35 // static
  36 ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) {
  37   return new ProcessMetrics(process);
  38 }
  39
  40 double ProcessMetrics::GetCPUUsage() {
  41   NOTIMPLEMENTED();
  42   return 0;
  43 }
  44
  45 size_t ProcessMetrics::GetPagefileUsage() const {
  46   task_basic_info_64 task_info_data;
  47   if (!GetTaskInfo(&task_info_data))
  48     return 0;
  49   return task_info_data.virtual_size;
  50 }
  51
  52 size_t ProcessMetrics::GetWorkingSetSize() const {
  53   task_basic_info_64 task_info_data;
  54   if (!GetTaskInfo(&task_info_data))
  55     return 0;
  56   return task_info_data.resident_size;
  57 }
  58
  59 size_t GetMaxFds() {
  60   static const rlim_t kSystemDefaultMaxFds = 256;
  61   rlim_t max_fds;
  62   struct rlimit nofile;
  63   if (getrlimit(RLIMIT_NOFILE, &nofile)) {
  64     // Error case: Take a best guess.
  65     max_fds = kSystemDefaultMaxFds;
  66   } else {
  67     max_fds = nofile.rlim_cur;
  68   }
  69
  70   if (max_fds > INT_MAX)
  71     max_fds = INT_MAX;
  72
  73   return static_cast<size_t>(max_fds);
  74 }
  75
  76 void SetFdLimit(unsigned int max_descriptors) {
  77   // Unimplemented.
  78 }
  79
  80 size_t GetPageSize() {
  81   return getpagesize();
  82 }
  83
  84 // Bytes committed by the system.
  85 size_t GetSystemCommitCharge() {
  86   NOTIMPLEMENTED();
  87   return 0;
  88 }
  89
  90 // Bytes committed by the system.
  91 bool GetSystemMemoryInfo(SystemMemoryInfoKB* meminfo) {
  92   // Unimplemented. Must enable unittest for IOS when this gets implemented.
  93   NOTIMPLEMENTED();
  94   return false;
  95 }
  96
  97 }  // namespace base