Mac: Implement about:memory.

This implements about:memory on Mac. It calls /bin/ps to obtain information
about processes (this is Apple's officially supported "API"). Unfortunately, ps
provides fairly minimal information (rss and vsize); top is better, but not a
stable API -- it has changed greatly between Mac OS 10.5 and 10.6, and moreover
the 10.6 version is more limited in its output formatting.

BUG=9653
TEST=Go to about:memory under a variety of conditions (with a variety of browsers loaded).

Review URL: http://codereview.chromium.org/333008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@31168 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 14 insertions, 0 deletions

diff --git a/chrome/browser/memory_details.h b/chrome/browser/memory_details.h
index b92fbae..0b35b4e 100644
--- a/chrome/browser/memory_details.h
+++ b/chrome/browser/memory_details.h
@@ -52,6 +52,10 @@ struct ProcessData {
   ProcessMemoryInformationList processes;
 };
 
+#if defined(OS_MACOSX)
+class ProcessInfoSnapshot;
+#endif
+
 // MemoryDetails fetches memory details about current running browsers.
 // Because this data can only be fetched asynchronously, callers use
 // this class via a callback.
@@ -103,6 +107,16 @@ class MemoryDetails : public base::RefCountedThreadSafe<MemoryDetails> {
   // The parameter holds information about processes from the IO thread.
   void CollectProcessData(std::vector<ProcessMemoryInformation>);
 
+#if defined(OS_MACOSX)
+  // A helper for |CollectProcessData()|, collecting data on the Chrome/Chromium
+  // process with PID |pid|. The collected data is added to the state of the
+  // object (in |process_data_|).
+  void CollectProcessDataChrome(
+      const std::vector<ProcessMemoryInformation>& child_info,
+      base::ProcessId pid,
+      const ProcessInfoSnapshot& process_info);
+#endif
+
   // Collect child process information on the UI thread.  Information about
   // renderer processes is only available there.
   void CollectChildInfoOnUIThread();