将API从Linux移植到Visual Studio 2008 [英] Porting time APIs from Linux to Visual Studio 2008

问题描述

我有一个应用程序，我移植到Microsoft Visual Studio 2008在Linux上构建和运行良好。

I have an application that I am porting to Microsoft Visual Studio 2008 that builds and runs fine on Linux.

我遇到麻烦的时间例程，我的Linux代码如下所示：

I am having trouble with the time routines, my Linux code looks like this:

#include <sys/types.h>
#include <sys/time.h>

typedef long long Usec;

inline Usec timevalToUsec(const timeval &tv)
{
  return (((Usec) tv.tv_sec) * 1000000) + ((Usec) tv.tv_usec);
}

但是编译器在 sys / h 头文件：

fatal error C1083: Cannot open include file:
      'sys/time.h': No such file or directory

如果我将include更改为 time.h 我得到一个不同的错误与timeval未定义：

If I change the include to just time.h I get a different error with timeval not being defined:

error C4430: missing type specifier - int assumed.
      Note: C++ does not support default-int

这是由于 timeval 未定义。

包括 time.h sys / time.h 正确，如果是这样，我在Microsoft Visual Studio中得到 struct timeval 的定义2008

Is including time.h instead of sys/time.h correct, and if so, where do I get the definition of struct timeval in Microsoft Visual Studio 2008?

推荐答案

winsock2.h a href =http://msdn.microsoft.com/en-us/library/windows/desktop/ms740560%28v=vs.85%29.aspx =nofollow> struct timeval ，因为它用于 select 。

The winsock2.h header fill will pull in struct timeval since it's used in calls like select.

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