Add defines, enums and headers for MSVC

[cascardo/ovs.git] / include / windows / unistd.h

diff --git a/include/windows/unistd.h b/include/windows/unistd.h
index d9ded5a..8629f7e 100644 (file)
--- a/include/windows/unistd.h
+++ b/include/windows/unistd.h
@@ -16,6 +16,9 @@
 #ifndef _UNISTD_H
 #define _UNISTD_H   1
 
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
 #define fsync _commit
 
 /* Standard file descriptors.  */
@@ -23,4 +26,51 @@
 #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
+
+__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;
+}
+
 #endif /* unistd.h  */