Index: base/metrics/histogram_base.h |
=================================================================== |
--- base/metrics/histogram_base.h (revision 150475) |
+++ base/metrics/histogram_base.h (working copy) |
@@ -5,10 +5,10 @@ |
#ifndef BASE_METRICS_HISTOGRAM_BASE_H_ |
#define BASE_METRICS_HISTOGRAM_BASE_H_ |
-#include <climits> |
#include <string> |
#include "base/base_export.h" |
+#include "base/basictypes.h" |
namespace base { |
@@ -19,11 +19,32 @@ |
static const Sample kSampleType_MAX; // INT_MAX |
+ enum Flags { |
+ kNoFlags = 0, |
+ kUmaTargetedHistogramFlag = 0x1, // Histogram should be UMA uploaded. |
+ |
+ // Indicate that the histogram was pickled to be sent across an IPC Channel. |
+ // If we observe this flag on a histogram being aggregated into after IPC, |
+ // then we are running in a single process mode, and the aggregation should |
+ // not take place (as we would be aggregating back into the source |
+ // histogram!). |
+ kIPCSerializationSourceFlag = 0x10, |
+ |
+ // Only for Histogram and its sub classes: fancy bucket-naming support. |
+ kHexRangePrintingFlag = 0x8000, |
+ }; |
+ |
+ |
HistogramBase(const std::string& name); |
virtual ~HistogramBase(); |
std::string histogram_name() const { return histogram_name_; } |
+ // Operations with Flags enum. |
+ int32 flags() const { return flags_; } |
+ void SetFlags(int32 flags); |
+ void ClearFlags(int32 flags); |
+ |
virtual void Add(Sample value) = 0; |
// The following methods provide graphical histogram displays. |
@@ -32,6 +53,9 @@ |
private: |
const std::string histogram_name_; |
+ int32 flags_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(HistogramBase); |
}; |
} // namespace base |