/*
- * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 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.
VLOG_DEFINE_THIS_MODULE(timeval);
+#ifdef _WIN32
+typedef unsigned int clockid_t;
+
+#ifndef CLOCK_MONOTONIC
+#define CLOCK_MONOTONIC 1
+#endif
+
+#ifndef CLOCK_REALTIME
+#define CLOCK_REALTIME 2
+#endif
+
+/* Number of 100 ns intervals from January 1, 1601 till January 1, 1970. */
+static ULARGE_INTEGER unix_epoch;
+#endif /* _WIN32 */
+
struct clock {
clockid_t id; /* CLOCK_MONOTONIC or CLOCK_REALTIME. */
{
struct timespec ts;
+#ifdef _WIN32
+ /* Calculate number of 100-nanosecond intervals till 01/01/1970. */
+ SYSTEMTIME unix_epoch_st = { 1970, 1, 0, 1, 0, 0, 0, 0};
+ FILETIME unix_epoch_ft;
+
+ SystemTimeToFileTime(&unix_epoch_st, &unix_epoch_ft);
+ unix_epoch.LowPart = unix_epoch_ft.dwLowDateTime;
+ unix_epoch.HighPart = unix_epoch_ft.dwHighDateTime;
+#endif
+
coverage_init();
init_clock(&monotonic_clock, (!clock_gettime(CLOCK_MONOTONIC, &ts)
*
* Stores the number of milliseconds elapsed during poll in '*elapsed'. */
int
-time_poll(struct pollfd *pollfds, int n_pollfds, long long int timeout_when,
- int *elapsed)
+time_poll(struct pollfd *pollfds, int n_pollfds, HANDLE *handles OVS_UNUSED,
+ long long int timeout_when, int *elapsed)
{
long long int *last_wakeup = last_wakeup_get();
long long int start;
- int retval;
+ int retval = 0;
time_init();
+ coverage_clear();
+ coverage_run();
if (*last_wakeup) {
log_poll_interval(*last_wakeup);
}
- coverage_clear();
- coverage_run();
start = time_msec();
timeout_when = MIN(timeout_when, deadline);
time_left = timeout_when - now;
}
+#ifndef _WIN32
retval = poll(pollfds, n_pollfds, time_left);
if (retval < 0) {
retval = -errno;
}
+#else
+ if (n_pollfds > MAXIMUM_WAIT_OBJECTS) {
+ VLOG_ERR("Cannot handle more than maximum wait objects\n");
+ } else if (n_pollfds != 0) {
+ retval = WaitForMultipleObjects(n_pollfds, handles, FALSE,
+ time_left);
+ }
+ if (retval < 0) {
+ /* XXX This will be replace by a win error to errno
+ conversion function */
+ retval = -WSAGetLastError();
+ retval = -EINVAL;
+ }
+#endif
if (deadline <= time_msec()) {
+#ifndef _WIN32
fatal_signal_handler(SIGALRM);
+#else
+ VLOG_ERR("wake up from WaitForMultipleObjects after deadline");
+ fatal_signal_handler(SIGTERM);
+#endif
if (retval < 0) {
retval = 0;
}
return boot_time;
}
+#ifdef _WIN32
+static ULARGE_INTEGER
+xgetfiletime(void)
+{
+ ULARGE_INTEGER current_time;
+ FILETIME current_time_ft;
+
+ /* Returns current time in UTC as a 64-bit value representing the number
+ * of 100-nanosecond intervals since January 1, 1601 . */
+ GetSystemTimePreciseAsFileTime(¤t_time_ft);
+ current_time.LowPart = current_time_ft.dwLowDateTime;
+ current_time.HighPart = current_time_ft.dwHighDateTime;
+
+ return current_time;
+}
+
+static int
+clock_gettime(clock_t id, struct timespec *ts)
+{
+ if (id == CLOCK_MONOTONIC) {
+ static LARGE_INTEGER freq;
+ LARGE_INTEGER count;
+ long long int ns;
+
+ if (!freq.QuadPart) {
+ /* Number of counts per second. */
+ QueryPerformanceFrequency(&freq);
+ }
+ /* Total number of counts from a starting point. */
+ QueryPerformanceCounter(&count);
+
+ /* Total nano seconds from a starting point. */
+ ns = (double) count.QuadPart / freq.QuadPart * 1000000000;
+
+ ts->tv_sec = count.QuadPart / freq.QuadPart;
+ ts->tv_nsec = ns % 1000000000;
+ } else if (id == CLOCK_REALTIME) {
+ ULARGE_INTEGER current_time = xgetfiletime();
+
+ /* Time from Epoch to now. */
+ ts->tv_sec = (current_time.QuadPart - unix_epoch.QuadPart) / 10000000;
+ ts->tv_nsec = ((current_time.QuadPart - unix_epoch.QuadPart) %
+ 10000000) * 100;
+ } else {
+ return -1;
+ }
+}
+#endif /* _WIN32 */
+
void
xgettimeofday(struct timeval *tv)
{
+#ifndef _WIN32
if (gettimeofday(tv, NULL) == -1) {
VLOG_FATAL("gettimeofday failed (%s)", ovs_strerror(errno));
}
+#else
+ ULARGE_INTEGER current_time = xgetfiletime();
+
+ tv->tv_sec = (current_time.QuadPart - unix_epoch.QuadPart) / 10000000;
+ tv->tv_usec = ((current_time.QuadPart - unix_epoch.QuadPart) %
+ 10000000) / 10;
+#endif
}
void
timespec_add(&monotonic_clock.warp, &monotonic_clock.warp, &ts);
ovs_mutex_unlock(&monotonic_clock.mutex);
seq_change(timewarp_seq);
+ /* give threads (eg. monitor) some chances to run */
+#ifndef _WIN32
+ poll(NULL, 0, 10);
+#else
+ Sleep(10);
+#endif
unixctl_command_reply(conn, "warped");
}