chrome/browser/memory_details_android.cc

   1 // Copyright (c) 2012 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 "chrome/browser/memory_details.h"
   6
   7 #include <set>
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/bind.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/process/process_iterator.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "chrome/common/chrome_constants.h"
  16 #include "chrome/grit/chromium_strings.h"
  17 #include "content/public/browser/browser_thread.h"
  18 #include "content/public/common/process_type.h"
  19 #include "ui/base/l10n/l10n_util.h"
  20
  21 using base::ProcessEntry;
  22 using base::ProcessId;
  23 using content::BrowserThread;
  24
  25 namespace {
  26
  27 // A helper for |CollectProcessData()| to include the chrome sandboxed
  28 // processes in android which are not running as a child of the browser
  29 // process.
  30 void AddNonChildChromeProcesses(
  31     std::vector<ProcessMemoryInformation>* processes) {
  32   base::ProcessIterator process_iter(NULL);
  33   while (const ProcessEntry* process_entry = process_iter.NextProcessEntry()) {
  34     const std::vector<std::string>& cmd_args = process_entry->cmd_line_args();
  35     if (cmd_args.empty() ||
  36         cmd_args[0].find(chrome::kHelperProcessExecutableName) ==
  37             std::string::npos) {
  38       continue;
  39     }
  40     ProcessMemoryInformation info;
  41     info.pid = process_entry->pid();
  42     processes->push_back(info);
  43   }
  44 }
  45
  46 // For each of the pids, collect memory information about that process
  47 // and append a record to |out|.
  48 void GetProcessDataMemoryInformation(
  49     const std::set<ProcessId>& pids, ProcessData* out) {
  50   for (std::set<ProcessId>::const_iterator i = pids.begin(); i != pids.end();
  51        ++i) {
  52     ProcessMemoryInformation pmi;
  53
  54     pmi.pid = *i;
  55     pmi.num_processes = 1;
  56
  57     if (pmi.pid == base::GetCurrentProcId())
  58       pmi.process_type = content::PROCESS_TYPE_BROWSER;
  59     else
  60       pmi.process_type = content::PROCESS_TYPE_UNKNOWN;
  61
  62     scoped_ptr<base::ProcessMetrics> metrics(
  63         base::ProcessMetrics::CreateProcessMetrics(*i));
  64     metrics->GetWorkingSetKBytes(&pmi.working_set);
  65
  66     out->processes.push_back(pmi);
  67   }
  68 }
  69
  70 // Find all children of the given process.
  71 void GetAllChildren(const std::vector<ProcessEntry>& processes,
  72                     const std::set<ProcessId>& roots,
  73                     std::set<ProcessId>* out) {
  74   *out = roots;
  75
  76   std::set<ProcessId> wavefront;
  77   for (std::set<ProcessId>::const_iterator i = roots.begin(); i != roots.end();
  78        ++i) {
  79     wavefront.insert(*i);
  80   }
  81
  82   while (wavefront.size()) {
  83     std::set<ProcessId> next_wavefront;
  84     for (std::vector<ProcessEntry>::const_iterator i = processes.begin();
  85          i != processes.end(); ++i) {
  86       if (wavefront.count(i->parent_pid())) {
  87         out->insert(i->pid());
  88         next_wavefront.insert(i->pid());
  89       }
  90     }
  91
  92     wavefront.clear();
  93     wavefront.swap(next_wavefront);
  94   }
  95 }
  96
  97 }  // namespace
  98
  99 MemoryDetails::MemoryDetails() {
 100 }
 101
 102 ProcessData* MemoryDetails::ChromeBrowser() {
 103   return &process_data_[0];
 104 }
 105
 106 void MemoryDetails::CollectProcessData(
 107     CollectionMode mode,
 108     const std::vector<ProcessMemoryInformation>& chrome_processes) {
 109   DCHECK(BrowserThread::GetBlockingPool()->RunsTasksOnCurrentThread());
 110
 111   std::vector<ProcessMemoryInformation> all_processes(chrome_processes);
 112   AddNonChildChromeProcesses(&all_processes);
 113
 114   std::vector<ProcessEntry> processes;
 115   base::ProcessIterator process_iter(NULL);
 116   while (const ProcessEntry* process_entry = process_iter.NextProcessEntry()) {
 117     processes.push_back(*process_entry);
 118   }
 119
 120   std::set<ProcessId> roots;
 121   roots.insert(base::GetCurrentProcId());
 122   for (std::vector<ProcessMemoryInformation>::const_iterator
 123        i = all_processes.begin(); i != all_processes.end(); ++i) {
 124     roots.insert(i->pid);
 125   }
 126
 127   std::set<ProcessId> current_browser_processes;
 128   GetAllChildren(processes, roots, &current_browser_processes);
 129
 130   ProcessData current_browser;
 131   GetProcessDataMemoryInformation(current_browser_processes, &current_browser);
 132   current_browser.name = l10n_util::GetStringUTF16(IDS_PRODUCT_NAME);
 133   current_browser.process_name =
 134       base::ASCIIToUTF16(chrome::kBrowserProcessExecutableName);
 135   process_data_.push_back(current_browser);
 136
 137   // Finally return to the browser thread.
 138   BrowserThread::PostTask(
 139       BrowserThread::UI, FROM_HERE,
 140       base::Bind(&MemoryDetails::CollectChildInfoOnUIThread, this));
 141 }