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, 35 insertions, 128 deletions

diff --git a/chrome/browser/memory_details.cc b/chrome/browser/memory_details.cc
index cfdafc3..219333f 100644
--- a/chrome/browser/memory_details.cc
+++ b/chrome/browser/memory_details.cc
@@ -3,7 +3,6 @@
 // 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"
@@ -19,11 +18,10 @@
 #include "chrome/common/url_constants.h"
 #include "grit/chromium_strings.h"
 
-class RenderViewHostDelegate;
-
-// 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[MemoryDetails::MAX_BROWSERS];
+#if defined(OS_LINUX)
+#include "chrome/browser/zygote_host_linux.h"
+#include "chrome/browser/renderer_host/render_sandbox_host_linux.h"
+#endif
 
 // About threading:
 //
@@ -38,25 +36,6 @@ static ProcessData g_process_template[MemoryDetails::MAX_BROWSERS];
 // expensive parts of this operation over on the file thread.
 //
 
-MemoryDetails::MemoryDetails() : ui_loop_(NULL) {
-  static const std::wstring google_browser_name =
-      l10n_util::GetString(IDS_PRODUCT_NAME);
-  ProcessData g_process_template[MemoryDetails::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) {
-    process_data_[index].name = g_process_template[index].name;
-    process_data_[index].process_name = g_process_template[index].process_name;
-  }
-}
-
 void MemoryDetails::StartFetch() {
   ui_loop_ = MessageLoop::current();
 
@@ -92,106 +71,17 @@ void MemoryDetails::CollectChildInfoOnIOThread() {
       NewRunnableMethod(this, &MemoryDetails::CollectProcessData, child_info));
 }
 
-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,
-          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));
-}
-
 void MemoryDetails::CollectChildInfoOnUIThread() {
   DCHECK(MessageLoop::current() == ui_loop_);
 
+#if defined(OS_LINUX)
+  const pid_t zygote_pid = Singleton<ZygoteHost>()->pid();
+  const pid_t sandbox_helper_pid = Singleton<RenderSandboxHostLinux>()->pid();
+#endif
+
+  ProcessData* const chrome_browser = ChromeBrowser();
   // Get more information about the process.
-  for (size_t index = 0; index < process_data_[CHROME_BROWSER].processes.size();
+  for (size_t index = 0; index < chrome_browser->processes.size();
       index++) {
     // Check if it's a renderer, if so get the list of page titles in it and
     // check if it's a diagnostics-related process.  We skip all diagnostics
@@ -199,10 +89,11 @@ void MemoryDetails::CollectChildInfoOnUIThread() {
     // the tab contents.
     RenderProcessHost::iterator renderer_iter(
         RenderProcessHost::AllHostsIterator());
+    ProcessMemoryInformation& process =
+        chrome_browser->processes[index];
+
     for (; !renderer_iter.IsAtEnd(); renderer_iter.Advance()) {
       DCHECK(renderer_iter.GetCurrentValue());
-      ProcessMemoryInformation& process =
-          process_data_[CHROME_BROWSER].processes[index];
       if (process.pid != renderer_iter.GetCurrentValue()->process().pid())
         continue;
       process.type = ChildProcessInfo::RENDER_PROCESS;
@@ -257,15 +148,23 @@ void MemoryDetails::CollectChildInfoOnUIThread() {
           process.is_diagnostics = true;
       }
     }
+
+#if defined(OS_LINUX)
+    if (process.pid == zygote_pid) {
+      process.type = ChildProcessInfo::ZYGOTE_PROCESS;
+    } else if (process.pid == sandbox_helper_pid) {
+      process.type = ChildProcessInfo::SANDBOX_HELPER_PROCESS;
+    }
+#endif
   }
 
   // Get rid of other Chrome processes that are from a different profile.
-  for (size_t index = 0; index < process_data_[CHROME_BROWSER].processes.size();
+  for (size_t index = 0; index < chrome_browser->processes.size();
       index++) {
-    if (process_data_[CHROME_BROWSER].processes[index].type ==
+    if (chrome_browser->processes[index].type ==
         ChildProcessInfo::UNKNOWN_PROCESS) {
-      process_data_[CHROME_BROWSER].processes.erase(
-          process_data_[CHROME_BROWSER].processes.begin() + index);
+      chrome_browser->processes.erase(
+          chrome_browser->processes.begin() + index);
       index--;
     }
   }
@@ -279,7 +178,7 @@ void MemoryDetails::UpdateHistograms() {
   // Reports a set of memory metrics to UMA.
   // Memory is measured in KB.
 
-  ProcessData browser = process_data_[CHROME_BROWSER];
+  const ProcessData& browser = *ChromeBrowser();
   size_t aggregate_memory = 0;
   int plugin_count = 0;
   int worker_count = 0;
@@ -301,6 +200,14 @@ void MemoryDetails::UpdateHistograms() {
        UMA_HISTOGRAM_MEMORY_KB("Memory.Worker", sample);
        worker_count++;
        break;
+     case ChildProcessInfo::ZYGOTE_PROCESS:
+       UMA_HISTOGRAM_MEMORY_KB("Memory.Zygote", sample);
+       break;
+     case ChildProcessInfo::SANDBOX_HELPER_PROCESS:
+       UMA_HISTOGRAM_MEMORY_KB("Memory.SandboxHelper", sample);
+       break;
+     default:
+       NOTREACHED();
     }
   }
   UMA_HISTOGRAM_MEMORY_KB("Memory.BackingStore",