| /* |
| * Copyright 2011 Range Networks, Inc. |
| * All Rights Reserved. |
| * |
| * This software is distributed under multiple licenses; |
| * see the COPYING file in the main directory for licensing |
| * information for this specific distribuion. |
| * |
| * This use of this software may be subject to additional restrictions. |
| * See the LEGAL file in the main directory for details. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| */ |
| |
| #ifndef GPRSUTILS_H |
| #define GPRSUTILS_H |
| #include <stdint.h> |
| #include <stdarg.h> |
| #include <string> |
| #include <string.h> |
| #include <math.h> // for sqrtf |
| #include "Logger.h" |
| |
| |
| namespace Utils { |
| |
| extern double timef(); // high resolution time |
| extern const std::string timestr(); // A timestamp to print in messages. |
| extern void sleepf(double howlong); // high resolution sleep |
| extern int gcd(int x, int y); |
| |
| // It is irritating to create a string just to interface to the brain-damaged |
| // C++ stream class, but this is only used for debug messages. |
| std::string format(const char *fmt, ...) __attribute__((format (printf,1,2))); |
| |
| int cstrSplit(char *in, char **pargv,int maxargc, const char *splitchars=NULL); |
| |
| // For classes with a text() function, provide a function to return a String, |
| // and also a standard << stream function that takes a pointer to the object. |
| // We dont provide the function that takes a reference to the object |
| // because it is too highly overloaded and generally doesnt work. |
| class Text2Str { |
| public: |
| virtual void text(std::ostream &os) const = 0; |
| std::string str() const; |
| }; |
| std::ostream& operator<<(std::ostream& os, const Text2Str *val); |
| |
| #if 0 |
| // Generic Activity Timer. Lots of controls to make everybody happy. |
| class ATimer { |
| double mStart; |
| //bool mActive; |
| double mLimitTime; |
| public: |
| ATimer() : mStart(0), mLimitTime(0) { } |
| ATimer(double wLimitTime) : mStart(0), mLimitTime(wLimitTime) { } |
| void start() { mStart=timef(); } |
| void stop() { mStart=0; } |
| bool active() { return !!mStart; } |
| double elapsed() { return timef() - mStart; } |
| bool expired() { return elapsed() > mLimitTime; } |
| }; |
| #endif |
| |
| |
| struct BitSet { |
| unsigned mBits; |
| void setBit(unsigned whichbit) { mBits |= 1<<whichbit; } |
| void clearBit(unsigned whichbit) { mBits &= ~(1<<whichbit); } |
| unsigned getBit(unsigned whichbit) const { return mBits & (1<<whichbit); } |
| bool isSet(unsigned whichbit) const { return mBits & (1<<whichbit); } |
| unsigned bits() const { return mBits; } |
| operator int(void) const { return mBits; } |
| BitSet() { mBits = 0; } |
| }; |
| |
| // Store current, min, max and compute running average and standard deviation. |
| template<class Type> struct Statistic { |
| Type mCurrent, mMin, mMax; // min,max optional initialization so you can print before adding any values. |
| unsigned mCnt; |
| double mSum; |
| //double mSum2; // sum of squares. |
| // (Type) cast needed in case Type is an enum, stupid language. |
| Statistic() : mCurrent((Type)0), mMin((Type)0), mMax((Type)0), mCnt(0), mSum(0) /*,mSum2(0)*/ {} |
| // Set the current value and add a statisical point. |
| void addPoint(Type val) { |
| mCurrent = val; |
| if (mCnt == 0 || val < mMin) {mMin = val;} |
| if (mCnt == 0 || val > mMax) {mMax = val;} |
| mCnt++; |
| mSum += val; |
| //mSum2 += val * val; |
| } |
| Type getCurrent() const { // Return current value. |
| return mCnt ? mCurrent : 0; |
| } |
| double getAvg() const { // Return average. |
| return mCnt==0 ? 0 : mSum/mCnt; |
| }; |
| //float getSD() const { // Return standard deviation. Use low precision square root function. |
| // return mCnt==0 ? 0 : sqrtf(mCnt * mSum2 - mSum*mSum) / mCnt; |
| //} |
| |
| void text(std::ostream &os) const { // Print everything in parens. |
| os << "("<<mCurrent; |
| if (mMin != mMax) { // Not point in printing all this stuff if min == max. |
| os <<LOGVAR2("min",mMin)<<LOGVAR2("max",mMax)<<LOGVAR2("avg",getAvg()); |
| if (mCnt <= 999999) { |
| os <<LOGVAR2("N",mCnt); |
| } else { // Shorten this up: |
| char buf[10], *ep; |
| sprintf(buf,"%.3g",round(mCnt)); |
| if ((ep = strchr(buf,'e')) && ep[1] == '+') { strcpy(ep+1,ep+2); } |
| os << LOGVAR2("N",buf); |
| } |
| // os<<LOGVAR2("sd",getSD()) standard deviation not interesting |
| } |
| os << ")"; |
| // " min="<<mMin <<" max="<<mMax <<format(" avg=%4g sd=%3g)",getAvg(),getSD()); |
| } |
| // Not sure if this works: |
| //std::string statStr() const { |
| // return (std::string)mCurrent + " min=" + (std::string) mMin +" max="+(string)mMax+ format(" avg=%4g sd=%3g",getAvg(),getSD()); |
| //} |
| }; |
| |
| // This I/O mechanism is so dumb: |
| std::ostream& operator<<(std::ostream& os, const Statistic<int> &stat); |
| std::ostream& operator<<(std::ostream& os, const Statistic<unsigned> &stat); |
| std::ostream& operator<<(std::ostream& os, const Statistic<float> &stat); |
| std::ostream& operator<<(std::ostream& os, const Statistic<double> &stat); |
| |
| |
| // Yes, they botched and left this out: |
| std::ostream& operator<<(std::ostream& os, std::ostringstream& ss); |
| |
| std::ostream &osprintf(std::ostream &os, const char *fmt, ...) __attribute__((format (printf,2,3))); |
| |
| std::string replaceAll(const std::string input, const std::string search, const std::string replace); |
| |
| }; // namespace |
| |
| using namespace Utils; |
| |
| #endif |