Home编程基础linux学习跨平台(WIndows, Linux, VxWorks) getTickCount实现

跨平台(WIndows, Linux, VxWorks) getTickCount实现

2016 年 2 月 10 日
在c/c++代码中，有时需要实现计时功能，比如某个时刻开始计时，然后到另一时刻时，计算距开始计时的时刻毫秒数。
 
通过在起始时刻和停止时刻分别调用下面的代码，返回的时间相减，便可获得这段时间的毫秒数，其跨Windows、Linux、VxWorks三个平台。

#ifdef WIN32
#define OS_WINDOWS WIN32
#include
#endif
#ifdef LINUX
#include
#include
#include
#endif
#ifdef VXWORKS
#include “vxworks.h”
#include
#include
#endif

#define ULONAG unsigned long

ULONGA getTickCount(void)
{
ULONGA currentTime;
#ifdef WIN32
currentTime = GetTickCount();
#endif
#ifdef LINUX
struct timeval current;
gettimeofday(&current, NULL);
currentTime = current.tv_sec * 1000 + current.tv_usec/1000;
#endif
#ifdef OS_VXWORKS
ULONGA timeSecond = tickGet() / sysClkRateGet();
U

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