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/*
* Copyright (c) 2014 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _UNISTD_H
#define _UNISTD_H 1
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <direct.h>
#include <windefs.h>
#define fsync _commit
#define getcwd _getcwd
/* Standard file descriptors. */
#define STDIN_FILENO 0 /* Standard input. */
#define STDOUT_FILENO 1 /* Standard output. */
#define STDERR_FILENO 2 /* Standard error output. */
#define _SC_UIO_MAXIOV 2
#define _XOPEN_IOV_MAX 16
#define _SC_PAGESIZE 0x1
#define _SC_NPROCESSORS_ONLN 0x2
#define _SC_PHYS_PAGES 0x4
static __inline pid_t getpid(void)
{
/* Since _getpid: https://msdn.microsoft.com/en-us/library/t2y34y40.aspx
* uses GetCurrentProcessId behind the scenes it is safe to assume no
* casting is required */
return GetCurrentProcessId();
}
__inline int GetNumLogicalProcessors(void)
{
SYSTEM_INFO info_temp;
GetSystemInfo(&info_temp);
long int n_cores = info_temp.dwNumberOfProcessors;
return n_cores;
}
__inline long sysconf(int type)
{
long value = -1;
long page_size = -1;
SYSTEM_INFO sys_info;
MEMORYSTATUSEX status;
switch (type) {
case _SC_NPROCESSORS_ONLN:
value = GetNumLogicalProcessors();
break;
case _SC_PAGESIZE:
GetSystemInfo(&sys_info);
value = sys_info.dwPageSize;
break;
case _SC_PHYS_PAGES:
status.dwLength = sizeof(status);
page_size = sysconf(_SC_PAGESIZE);
if (GlobalMemoryStatusEx(&status) && page_size != -1) {
value = status.ullTotalPhys / page_size;
}
break;
default:
break;
}
return value;
}
/* On Windows, a console is a specialized character device, and isatty() only
* reports whether a file description is a character device and thus reports
* that devices such as /dev/null are ttys. This replacement avoids that
* problem. */
#undef isatty
#define isatty(fd) rpl_isatty(fd)
static __inline int
rpl_isatty(int fd)
{
HANDLE h = (HANDLE)(INT_PTR) _get_osfhandle(fd);
DWORD st;
return (_isatty(STDOUT_FILENO)
&& h != INVALID_HANDLE_VALUE
&& GetConsoleMode(h, &st));
}
#endif /* unistd.h */
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