?? ttimer.h.svn-base
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#ifndef _TTIMER_H_#define _TTIMER_H_#include "ffdebug.h"class Ttimer{private: const char_t *name; int64_t t,t1; double freq; #ifndef __GNUC__ static int64_t read_counter(void) { int64_t ts; uint32_t ts1, ts2; __asm { rdtsc mov ts1, eax mov ts2, edx } ts = ((uint64_t) ts2 << 32) | ((uint64_t) ts1); return ts; } #else static int64_t read_counter(void) { int64_t ts; uint32_t ts1, ts2; __asm__ __volatile__("rdtsc\n\t":"=a"(ts1), "=d"(ts2)); ts = ((uint64_t) ts2 << 32) | ((uint64_t) ts1); return ts; } #endif static double get_freq(void) { int64_t x, y; int32_t i; i = time(NULL); while (i == time(NULL)); x = read_counter(); i++; while (i == time(NULL)); y = read_counter(); return (double) (y - x) / 1000.; }public: Ttimer(const char_t *Iname) { //freq=get_freq(); name=Iname; t=0; } ~Ttimer() { DPRINTF(_l("timer %s: %12I64i"),name,t); } void start(void) { t1=read_counter(); } void stop(void) { t+=read_counter()-t1; }};class TtimerAuto{private: Ttimer *t; bool own;public: TtimerAuto(const char_t *name):t(new Ttimer(name)),own(true) { t->start(); } TtimerAuto(Ttimer &It):t(&It),own(false) { t->start(); } ~TtimerAuto() { t->stop(); if (own) delete t; }};#endif?? 快捷鍵說明
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