Add histograms to track the size of the profile data.

BUG=16705
TEST=FileUtilTest.FileAndDirectorySize


Review URL: http://codereview.chromium.org/2778006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@49606 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 33 insertions, 0 deletions

diff --git a/base/file_util.cc b/base/file_util.cc
index b24ffde..5ce4456 100644
--- a/base/file_util.cc
+++ b/base/file_util.cc
@@ -268,6 +268,24 @@ int64 ComputeDirectorySize(const FilePath& root_path) {
   return running_size;
 }
 
+int64 ComputeFilesSize(const FilePath& directory,
+                       const FilePath::StringType& pattern) {
+  int64 running_size = 0;
+  FileEnumerator file_iter(directory, false, FileEnumerator::FILES, pattern);
+  for (FilePath current = file_iter.Next(); !current.empty();
+       current = file_iter.Next()) {
+    FileEnumerator::FindInfo info;
+    file_iter.GetFindInfo(&info);
+#if defined(OS_WIN)
+    LARGE_INTEGER li = { info.nFileSizeLow, info.nFileSizeHigh };
+    running_size += li.QuadPart;
+#else
+    running_size += info.stat.st_size;
+#endif
+  }
+  return running_size;
+}
+
 ///////////////////////////////////////////////
 // MemoryMappedFile
 
diff --git a/base/file_util.h b/base/file_util.h
index 04afdec..b2e176b 100644
--- a/base/file_util.h
+++ b/base/file_util.h
@@ -82,6 +82,15 @@ int CountFilesCreatedAfter(const FilePath& path,
 // particularly speedy in any platform.
 int64 ComputeDirectorySize(const FilePath& root_path);
 
+// Returns the total number of bytes used by all files matching the provided
+// |pattern|, on this |directory| (without recursion). If the path does not
+// exist the function returns 0.
+//
+// This function is implemented using the FileEnumerator class so it is not
+// particularly speedy in any platform.
+int64 ComputeFilesSize(const FilePath& directory,
+                       const FilePath::StringType& pattern);
+
 // Deletes the given path, whether it's a file or a directory.
 // If it's a directory, it's perfectly happy to delete all of the
 // directory's contents.  Passing true to recursive deletes
diff --git a/base/file_util_unittest.cc b/base/file_util_unittest.cc
index 219b63d..39e5398 100644
--- a/base/file_util_unittest.cc
+++ b/base/file_util_unittest.cc
@@ -463,6 +463,12 @@ TEST_F(FileUtilTest, FileAndDirectorySize) {
 
   int64 computed_size = file_util::ComputeDirectorySize(test_dir_);
   EXPECT_EQ(size_f1 + size_f2 + 3, computed_size);
+
+  computed_size = file_util::ComputeFilesSize(test_dir_, FPL("The file*"));
+  EXPECT_EQ(size_f1, computed_size);
+
+  computed_size = file_util::ComputeFilesSize(test_dir_, FPL("bla*"));
+  EXPECT_EQ(0, computed_size);
 }
 
 TEST_F(FileUtilTest, NormalizeFilePathBasic) {