#define FIO_OS_H
#include <sys/types.h>
+#include <pthread.h>
#include <unistd.h>
#if defined(__linux__)
#include "os-mac.h"
#elif defined(_AIX)
#include "os-aix.h"
+#elif defined(__CYGWIN__)
+#include "os-windows.h"
#else
#error "unsupported os"
#endif