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| author | lpromero@chromium.org <lpromero@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-12-20 17:46:47 +0000 |
|---|---|---|
| committer | lpromero@chromium.org <lpromero@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-12-20 17:46:47 +0000 |
| commit | bbc2e4c6ab8afb95f5e63b7a02f8ef60c71dec9b (patch) | |
| tree | 228ab5edfa0163c9c80daf33daa226b3d9fa6299 /base/metrics/statistics_recorder.h | |
| parent | 473bdc43543599e19a749a530b839fac5f865e0c (diff) | |
| download | chromium_src-bbc2e4c6ab8afb95f5e63b7a02f8ef60c71dec9b.zip chromium_src-bbc2e4c6ab8afb95f5e63b7a02f8ef60c71dec9b.tar.gz chromium_src-bbc2e4c6ab8afb95f5e63b7a02f8ef60c71dec9b.tar.bz2 | |
Reland "Add a HistogramRecorder class and use cases."
This CL adds a utility class to streamline the task of testing that metrics have been updated as expected. Specifically, the HistogramRecorder class allows a client to obtain the differential value of a given histogram in the interval since the given HistogramRecorder instance was created.
This reverts commit b957026f43ef9464a8cdd5a240867c807b2281da.
BUG=232414
TBR=rsleevi, mark, groby, thakis
Review URL: https://codereview.chromium.org/19866004
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242121 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'base/metrics/statistics_recorder.h')
| -rw-r--r-- | base/metrics/statistics_recorder.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/base/metrics/statistics_recorder.h b/base/metrics/statistics_recorder.h index 0716e80..9cf1de7 100644 --- a/base/metrics/statistics_recorder.h +++ b/base/metrics/statistics_recorder.h @@ -70,9 +70,9 @@ class BASE_EXPORT StatisticsRecorder { static HistogramBase* FindHistogram(const std::string& name); // GetSnapshot copies some of the pointers to registered histograms into the - // caller supplied vector (Histograms). Only histograms with names matching - // query are returned. The query must be a substring of histogram name for its - // pointer to be copied. + // caller supplied vector (Histograms). Only histograms which have |query| as + // a substring are copied (an empty string will process all registered + // histograms). static void GetSnapshot(const std::string& query, Histograms* snapshot); private: |