Add about:memory support for Linux....

chrome/browser/memory_details_linux.cc

Index: chrome/browser/memory_details_linux.cc
===================================================================
--- chrome/browser/memory_details_linux.cc	(revision 0)
+++ chrome/browser/memory_details_linux.cc	(revision 0)
@@ -0,0 +1,106 @@
+// 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 "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/common/child_process_host.h"
+#include "chrome/common/url_constants.h"
+#include "grit/chromium_strings.h"
+
+// Known browsers which we collect details for.
+enum _BrowserProcess {
+  CHROME_BROWSER = 0,
+  FIREFOX_BROWSER,
+  OPERA_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);

[Evan Martin, 2009/08/03 05:16:11]

We avoid statics as a rule; is there a reason for this one?

+  ProcessData g_process_template[MAX_BROWSERS] = {

[Evan Martin, 2009/08/03 05:16:11]

Does this shadow the other definition?  I am confused by it :)

+    { google_browser_name.c_str(), L"chrome", },
+    { L"Firefox", L"firefox-bin", },

[Joel Stanley (old), 2009/08/03 16:02:37]

Some other browsers present on my Ubuntu Karmic system:
 - Firefox 3.5 is 'firefox-3.5'
 - Firefox 3 is 'firefox'
 - Epiphany is 'epiphany-browser'
 - Midori is 'midori'

+    { L"Opera", L"opera", },
+    { L"Konqueror", L"konqueror", },
+  };
+
+  for (unsigned int index = 0; index < arraysize(g_process_template); ++index) {

[Evan Martin, 2009/08/03 05:16:11]

size_t

+    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));
+
+  for (unsigned int index = 0; index < arraysize(g_process_template); index++) {

[Evan Martin, 2009/08/03 05:16:11]

size_t

+    process_data_[index].processes.clear();
+
+    base::NamedProcessIterator process_iter(process_data_[index].process_name,
+                                            NULL);
+
+    const ProcessEntry* entry;
+    while ((entry = process_iter.NextProcessEntry())) {
+      ProcessMemoryInformation info;
+      info.pid = entry->pid;
+
+      if (info.pid == base::GetCurrentProcId())
+        info.type = ChildProcessInfo::BROWSER_PROCESS;
+      else
+        info.type = ChildProcessInfo::UNKNOWN_PROCESS;
+
+      base::ProcessHandle handle;
+      if (!base::OpenProcessHandle(entry->pid, &handle))
+        continue;
+      scoped_ptr<base::ProcessMetrics> metrics;
+      metrics.reset(base::ProcessMetrics::CreateProcessMetrics(handle));
+      metrics->GetCommittedKBytes(&info.committed);
+      metrics->GetWorkingSetKBytes(&info.working_set);
+
+      // Get Version Information.
+      if (index == 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;
+        }
+      }
+
+      // Add the process info to our list.
+      process_data_[index].processes.push_back(info);
+    }
+  }
+
+  // Finally return to the browser thread.
+  ui_loop_->PostTask(FROM_HERE,
+      NewRunnableMethod(this, &MemoryDetails::CollectChildInfoOnUIThread));
+}