+
+#ifdef LISP_FEATURE_WIN32
+#include <windows.h>
+#include <time.h>
+/*
+ * faked-up implementation of select(). Right now just enough to get through
+ * second genesis.
+ */
+int select(int top_fd, DWORD *read_set, DWORD *write_set, DWORD *except_set, time_t *timeout)
+{
+ /*
+ * FIXME: Going forward, we may want to use MsgWaitForMultipleObjects
+ * in order to support a windows message loop inside serve-event.
+ */
+ HANDLE handles[MAXIMUM_WAIT_OBJECTS];
+ int fds[MAXIMUM_WAIT_OBJECTS];
+ int num_handles;
+ int i;
+ DWORD retval;
+ int polling_write;
+ DWORD win_timeout;
+
+ num_handles = 0;
+ polling_write = 0;
+ for (i = 0; i < top_fd; i++) {
+ if (except_set) except_set[i >> 5] = 0;
+ if (write_set && (write_set[i >> 5] & (1 << (i & 31)))) polling_write = 1;
+ if (read_set[i >> 5] & (1 << (i & 31))) {
+ read_set[i >> 5] &= ~(1 << (i & 31));
+ fds[num_handles] = i;
+ handles[num_handles++] = (HANDLE) _get_osfhandle(i);
+ }
+ }
+
+ win_timeout = INFINITE;
+ if (timeout) win_timeout = (timeout[0] * 1000) + timeout[1];
+
+ /* Last parameter here is timeout in milliseconds. */
+ /* retval = WaitForMultipleObjects(num_handles, handles, 0, INFINITE); */
+ retval = WaitForMultipleObjects(num_handles, handles, 0, win_timeout);
+
+ if (retval < WAIT_ABANDONED) {
+ /* retval, at this point, is the index of the single live HANDLE/fd. */
+ read_set[fds[retval] >> 5] |= (1 << (fds[retval] & 31));
+ return 1;
+ }
+ return polling_write;
+}
+
+/*
+ * Windows doesn't have gettimeofday(), and we need it for the compiler,
+ * for serve-event, and for a couple other things. We don't need a timezone
+ * yet, however, and the closest we can easily get to a timeval is the
+ * seconds part. So that's what we do.
+ */
+int gettimeofday(long *timeval, long *timezone)
+{
+ timeval[0] = time(NULL);
+ timeval[1] = 0;
+
+ return 0;
+}
+#endif
+
+
+/* We will need to define these things or their equivalents for Win32
+ eventually, but for now let's get it working for everyone else. */
+#ifndef LISP_FEATURE_WIN32
+/* From SB-BSD-SOCKETS, to get h_errno */
+int get_h_errno()
+{
+ return h_errno;
+}
+
+/* From SB-POSIX, wait-macros */
+int wifexited(int status) {
+ return WIFEXITED(status);
+}
+int wexitstatus(int status) {
+ return WEXITSTATUS(status);
+}
+int wifsignaled(int status) {
+ return WIFSIGNALED(status);
+}
+int wtermsig(int status) {
+ return WTERMSIG(status);
+}
+int wifstopped(int status) {
+ return WIFSTOPPED(status);
+}
+int wstopsig(int status) {
+ return WSTOPSIG(status);
+}
+/* FIXME: POSIX also defines WIFCONTINUED, but that appears not to
+ exist on at least Linux... */
+#endif /* !LISP_FEATURE_WIN32 */
+
+/* From SB-POSIX, stat-macros */
+int s_isreg(mode_t mode)
+{
+ return S_ISREG(mode);
+}
+int s_isdir(mode_t mode)
+{
+ return S_ISDIR(mode);
+}
+int s_ischr(mode_t mode)
+{
+ return S_ISCHR(mode);
+}
+int s_isblk(mode_t mode)
+{
+ return S_ISBLK(mode);
+}
+int s_isfifo(mode_t mode)
+{
+ return S_ISFIFO(mode);
+}
+#ifndef LISP_FEATURE_WIN32
+int s_islnk(mode_t mode)
+{
+#ifdef S_ISLNK
+ return S_ISLNK(mode);
+#else
+ return ((mode & S_IFMT) == S_IFLNK);
+#endif
+}
+int s_issock(mode_t mode)
+{
+#ifdef S_ISSOCK
+ return S_ISSOCK(mode);
+#else
+ return ((mode & S_IFMT) == S_IFSOCK);
+#endif
+}
+#endif /* !LISP_FEATURE_WIN32 */