Linux: about:memory

(based on http://code.google.com/p/chromium/issues/detail?id=16251)

Add about:memory support to Linux. Rather than try and copy the
Windows output, we use a couple of metrics which make more sense on
Linux: USS and PSS.

http://codereview.chromium.org/177024


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@24979 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 156 insertions, 0 deletions

diff --git a/chrome/browser/memory_details_win.cc b/chrome/browser/memory_details_win.cc
new file mode 100644
index 0000000..4c3d8be
--- /dev/null
+++ b/chrome/browser/memory_details_win.cc
@@ -0,0 +1,156 @@
+// Copyright (c) 2006-2008 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 "chrome/browser/memory_details.h"
+#include <psapi.h>
+
+#include "app/l10n_util.h"
+#include "base/file_version_info.h"
+#include "base/string_util.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/chrome_thread.h"
+#include "chrome/browser/renderer_host/backing_store_manager.h"
+#include "chrome/browser/renderer_host/render_process_host.h"
+#include "chrome/browser/tab_contents/navigation_entry.h"
+#include "chrome/browser/tab_contents/tab_contents.h"
+#include "chrome/common/child_process_host.h"
+#include "chrome/common/url_constants.h"
+#include "grit/chromium_strings.h"
+
+// Known browsers which we collect details for.
+enum {
+  CHROME_BROWSER = 0,
+  IE_BROWSER,
+  FIREFOX_BROWSER,
+  OPERA_BROWSER,
+  SAFARI_BROWSER,
+  IE_64BIT_BROWSER,
+  KONQUEROR_BROWSER,
+  MAX_BROWSERS
+} BrowserProcess;
+
+// Template of static data we use for finding browser process information.
+// These entries must match the ordering for MemoryDetails::BrowserProcess.
+static ProcessData g_process_template[MAX_BROWSERS];
+
+MemoryDetails::MemoryDetails()
+  : ui_loop_(NULL) {
+  static const std::wstring google_browser_name =
+      l10n_util::GetString(IDS_PRODUCT_NAME);
+  ProcessData g_process_template[MAX_BROWSERS] = {
+    { google_browser_name.c_str(), L"chrome.exe", },
+    { L"IE", L"iexplore.exe", },
+    { L"Firefox", L"firefox.exe", },
+    { L"Opera", L"opera.exe", },
+    { L"Safari", L"safari.exe", },
+    { L"IE (64bit)", L"iexplore.exe", },
+    { L"Konqueror", L"konqueror.exe", },
+  };
+
+  for (int index = 0; index < arraysize(g_process_template); ++index) {
+    ProcessData process;
+    process.name = g_process_template[index].name;
+    process.process_name = g_process_template[index].process_name;
+    process_data_.push_back(process);
+  }
+}
+
+ProcessData* MemoryDetails::ChromeBrowser() {
+  return &process_data_[CHROME_BROWSER];
+}
+
+void MemoryDetails::CollectProcessData(
+    std::vector<ProcessMemoryInformation> child_info) {
+  DCHECK(MessageLoop::current() ==
+      ChromeThread::GetMessageLoop(ChromeThread::FILE));
+
+  // Clear old data.
+  for (int index = 0; index < arraysize(g_process_template); index++)
+    process_data_[index].processes.clear();
+
+  SYSTEM_INFO system_info;
+  GetNativeSystemInfo(&system_info);
+  bool is_64bit_os =
+      system_info.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64;
+
+  ScopedHandle snapshot(::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0));
+  PROCESSENTRY32 process_entry = {sizeof(PROCESSENTRY32)};
+  if (!snapshot.Get()) {
+    LOG(ERROR) << "CreateToolhelp32Snaphot failed: " << GetLastError();
+    return;
+  }
+  if (!::Process32First(snapshot, &process_entry)) {
+    LOG(ERROR) << "Process32First failed: " << GetLastError();
+    return;
+  }
+  do {
+    int pid = process_entry.th32ProcessID;
+    ScopedHandle handle(::OpenProcess(
+        PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pid));
+    if (!handle.Get())
+      continue;
+    bool is_64bit_process = false;
+    // IsWow64Process() returns FALSE for a 32bit process on a 32bit OS.
+    // We need to check if the real OS is 64bit.
+    if (is_64bit_os) {
+      BOOL is_wow64 = FALSE;
+      // IsWow64Process() is supported by Windows XP SP2 or later.
+      IsWow64Process(handle, &is_wow64);
+      is_64bit_process = !is_wow64;
+    }
+    for (int index2 = 0; index2 < arraysize(g_process_template); index2++) {
+      if (_wcsicmp(process_data_[index2].process_name.c_str(),
+          process_entry.szExeFile) != 0)
+        continue;
+      if (index2 == IE_BROWSER && is_64bit_process)
+        continue;  // Should use IE_64BIT_BROWSER
+      // Get Memory Information.
+      ProcessMemoryInformation info;
+      info.pid = pid;
+      if (info.pid == GetCurrentProcessId())
+        info.type = ChildProcessInfo::BROWSER_PROCESS;
+      else
+        info.type = ChildProcessInfo::UNKNOWN_PROCESS;
+
+      scoped_ptr<base::ProcessMetrics> metrics;
+      metrics.reset(base::ProcessMetrics::CreateProcessMetrics(handle));
+      metrics->GetCommittedKBytes(&info.committed);
+      metrics->GetWorkingSetKBytes(&info.working_set);
+
+      // Get Version Information.
+      TCHAR name[MAX_PATH];
+      if (index2 == CHROME_BROWSER) {
+        scoped_ptr<FileVersionInfo> version_info(
+            FileVersionInfo::CreateFileVersionInfoForCurrentModule());
+        if (version_info != NULL)
+          info.version = version_info->file_version();
+        // Check if this is one of the child processes whose data we collected
+        // on the IO thread, and if so copy over that data.
+        for (size_t child = 0; child < child_info.size(); child++) {
+          if (child_info[child].pid != info.pid)
+            continue;
+          info.titles = child_info[child].titles;
+          info.type = child_info[child].type;
+          break;
+        }
+      } else if (GetModuleFileNameEx(handle, NULL, name, MAX_PATH - 1)) {
+        std::wstring str_name(name);
+        scoped_ptr<FileVersionInfo> version_info(
+            FileVersionInfo::CreateFileVersionInfo(str_name));
+        if (version_info != NULL) {
+          info.version = version_info->product_version();
+          info.product_name = version_info->product_name();
+        }
+      }
+
+      // Add the process info to our list.
+      process_data_[index2].processes.push_back(info);
+      break;
+    }
+  } while (::Process32Next(snapshot, &process_entry));
+
+  // Finally return to the browser thread.
+  ui_loop_->PostTask(FROM_HERE,
+      NewRunnableMethod(this, &MemoryDetails::CollectChildInfoOnUIThread));
+}