gecko-dev/xpcom/ds/nsStopwatch.h

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#ifndef nsStopwatch_h__
#define nsStopwatch_h__

#include "nsIStopwatch.h"

#ifdef  NS_ENABLE_STOPWATCH

#include "nsHashtable.h"

////////////////////////////////////////////////////////////////////////////////

class nsStopwatchService : public nsIStopwatchService
{
public:
    NS_DECL_ISUPPORTS
    NS_DECL_NSIPROPERTIES
    NS_DECL_NSISTOPWATCHSERVICE

    nsStopwatchService();
    virtual ~nsStopwatchService();

    static NS_METHOD
    Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);

    nsresult Init();

protected:
    nsSupportsHashtable         mStopwatches;
};

////////////////////////////////////////////////////////////////////////////////

class nsTimingData {
public:
    nsTimingData()
        : mStartTime(0),
          mTotalTime(0),
          mTotalSquaredTime(0),
          mCount(0) {
    }
    PRIntervalTime              mStartTime;
    double                      mTotalTime;
    double                      mTotalSquaredTime;
    double                      mCount;
};

////////////////////////////////////////////////////////////////////////////////

class nsStopwatch : public nsIStopwatch
{
public:
    NS_DECL_ISUPPORTS
    NS_DECL_NSISTOPWATCH

    nsStopwatch();
    virtual ~nsStopwatch();

    static NS_METHOD
    Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);

    void TimeUnits(double timeInMilliSeconds,
                   double *adjustedValue, const char* *adjustedUnits,
                   double *factor);

protected:
    char*                       mName;
    char*                       mCountUnits;
    PRBool                      mPerThread;
    PRUintn                     mThreadTimingDataIndex;
    nsTimingData                mTimingData;
};

////////////////////////////////////////////////////////////////////////////////

#endif // NS_ENABLE_STOPWATCH

#endif // nsStopwatch_h__