--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/glib/libglib/src/gtimer.c Tue Feb 02 02:01:42 2010 +0200
@@ -0,0 +1,321 @@
+/* GLIB - Library of useful routines for C programming
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ * Portions copyright (c) 2006 Nokia Corporation. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * Modified by the GLib Team and others 1997-2000. See the AUTHORS
+ * file for a list of people on the GLib Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GLib at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+/*
+ * MT safe
+ */
+
+#include "config.h"
+#include "glibconfig.h"
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif /* HAVE_UNISTD_H */
+
+#ifndef G_OS_WIN32
+#include <sys/time.h>
+#include <time.h>
+#include <errno.h>
+#endif /* G_OS_WIN32 */
+
+#ifdef G_OS_WIN32
+#include <windows.h>
+#endif /* G_OS_WIN32 */
+
+#include "glib.h"
+#include "galias.h"
+
+#ifdef __SYMBIAN32__
+#include <glib_wsd.h>
+#endif /* __SYMBIAN32__ */
+
+#if EMULATOR
+#define g_thread_functions_for_glib_use (*_g_thread_functions_for_glib_use())
+#define g_thread_use_default_impl (*_g_thread_use_default_impl())
+#endif /* EMULATOR */
+
+
+struct _GTimer
+{
+#ifdef G_OS_WIN32
+ guint64 start;
+ guint64 end;
+#else /* !G_OS_WIN32 */
+ struct timeval start;
+ struct timeval end;
+#endif /* !G_OS_WIN32 */
+
+ guint active : 1;
+};
+
+#ifdef G_OS_WIN32
+# define GETTIME(v) \
+ GetSystemTimeAsFileTime ((FILETIME *)&v)
+#else /* !G_OS_WIN32 */
+# define GETTIME(v) \
+ gettimeofday (&v, NULL)
+#endif /* !G_OS_WIN32 */
+
+EXPORT_C GTimer*
+g_timer_new (void)
+{
+ GTimer *timer;
+ timer = g_new (GTimer, 1);
+ timer->active = TRUE;
+
+ GETTIME (timer->start);
+
+ return timer;
+}
+
+EXPORT_C void
+g_timer_destroy (GTimer *timer)
+{
+ g_return_if_fail (timer != NULL);
+
+ g_free (timer);
+}
+
+EXPORT_C void
+g_timer_start (GTimer *timer)
+{
+ g_return_if_fail (timer != NULL);
+
+ timer->active = TRUE;
+
+ GETTIME (timer->start);
+}
+
+EXPORT_C void
+g_timer_stop (GTimer *timer)
+{
+ g_return_if_fail (timer != NULL);
+
+ timer->active = FALSE;
+
+ GETTIME(timer->end);
+}
+
+EXPORT_C void
+g_timer_reset (GTimer *timer)
+{
+ g_return_if_fail (timer != NULL);
+
+ GETTIME (timer->start);
+}
+
+EXPORT_C void
+g_timer_continue (GTimer *timer)
+{
+#ifdef G_OS_WIN32
+ guint64 elapsed;
+#else
+ struct timeval elapsed;
+#endif /* G_OS_WIN32 */
+
+ g_return_if_fail (timer != NULL);
+ g_return_if_fail (timer->active == FALSE);
+
+ /* Get elapsed time and reset timer start time
+ * to the current time minus the previously
+ * elapsed interval.
+ */
+
+#ifdef G_OS_WIN32
+
+ elapsed = timer->end - timer->start;
+
+ GETTIME (timer->start);
+
+ timer->start -= elapsed;
+
+#else /* !G_OS_WIN32 */
+
+ if (timer->start.tv_usec > timer->end.tv_usec)
+ {
+ timer->end.tv_usec += G_USEC_PER_SEC;
+ timer->end.tv_sec--;
+ }
+
+ elapsed.tv_usec = timer->end.tv_usec - timer->start.tv_usec;
+ elapsed.tv_sec = timer->end.tv_sec - timer->start.tv_sec;
+
+ GETTIME (timer->start);
+
+ if (timer->start.tv_usec < elapsed.tv_usec)
+ {
+ timer->start.tv_usec += G_USEC_PER_SEC;
+ timer->start.tv_sec--;
+ }
+
+ timer->start.tv_usec -= elapsed.tv_usec;
+ timer->start.tv_sec -= elapsed.tv_sec;
+
+#endif /* !G_OS_WIN32 */
+
+ timer->active = TRUE;
+}
+
+EXPORT_C gdouble
+g_timer_elapsed (GTimer *timer,
+ gulong *microseconds)
+{
+ gdouble total;
+#ifdef G_OS_WIN32
+ gint64 elapsed;
+#else
+ struct timeval elapsed;
+#endif /* G_OS_WIN32 */
+
+ g_return_val_if_fail (timer != NULL, 0);
+
+#ifdef G_OS_WIN32
+ if (timer->active)
+ GETTIME (timer->end);
+
+ elapsed = timer->end - timer->start;
+
+ total = elapsed / 1e7;
+
+ if (microseconds)
+ *microseconds = (elapsed / 10) % 1000000;
+#else /* !G_OS_WIN32 */
+ if (timer->active)
+ gettimeofday (&timer->end, NULL);
+
+ if (timer->start.tv_usec > timer->end.tv_usec)
+ {
+ timer->end.tv_usec += G_USEC_PER_SEC;
+ timer->end.tv_sec--;
+ }
+
+ elapsed.tv_usec = timer->end.tv_usec - timer->start.tv_usec;
+ elapsed.tv_sec = timer->end.tv_sec - timer->start.tv_sec;
+
+ total = elapsed.tv_sec + ((gdouble) elapsed.tv_usec / 1e6);
+ if (total < 0)
+ {
+ total = 0;
+
+ if (microseconds)
+ *microseconds = 0;
+ }
+ else if (microseconds)
+ *microseconds = elapsed.tv_usec;
+
+#endif /* !G_OS_WIN32 */
+
+ return total;
+}
+
+EXPORT_C void
+g_usleep (gulong microseconds)
+{
+#ifdef G_OS_WIN32
+ Sleep (microseconds / 1000);
+#else /* !G_OS_WIN32 */
+# ifdef HAVE_NANOSLEEP
+ struct timespec request, remaining;
+ request.tv_sec = microseconds / G_USEC_PER_SEC;
+ request.tv_nsec = 1000 * (microseconds % G_USEC_PER_SEC);
+ while (nanosleep (&request, &remaining) == -1 && errno == EINTR)
+ request = remaining;
+# else /* !HAVE_NANOSLEEP */
+ if (g_thread_supported ())
+ {
+ static GStaticMutex mutex = G_STATIC_MUTEX_INIT;
+ static GCond* cond = NULL;
+ GTimeVal end_time;
+
+ g_get_current_time (&end_time);
+ if (microseconds > G_MAXLONG)
+ {
+ microseconds -= G_MAXLONG;
+ g_time_val_add (&end_time, G_MAXLONG);
+ }
+ g_time_val_add (&end_time, microseconds);
+
+ g_static_mutex_lock (&mutex);
+
+ if (!cond)
+ cond = g_cond_new ();
+
+ while (g_cond_timed_wait (cond, g_static_mutex_get_mutex (&mutex),
+ &end_time))
+ /* do nothing */;
+
+ g_static_mutex_unlock (&mutex);
+ }
+ else
+ {
+ struct timeval tv;
+ tv.tv_sec = microseconds / G_USEC_PER_SEC;
+ tv.tv_usec = microseconds % G_USEC_PER_SEC;
+ select(0, NULL, NULL, NULL, &tv);
+ }
+# endif /* !HAVE_NANOSLEEP */
+#endif /* !G_OS_WIN32 */
+}
+
+/**
+ * g_time_val_add:
+ * @time_: a #GTimeVal
+ * @microseconds: number of microseconds to add to @time
+ *
+ * Adds the given number of microseconds to @time_. @microseconds can
+ * also be negative to decrease the value of @time_.
+ **/
+EXPORT_C void
+g_time_val_add (GTimeVal *time_, glong microseconds)
+{
+ g_return_if_fail (time_->tv_usec >= 0 && time_->tv_usec < G_USEC_PER_SEC);
+
+ if (microseconds >= 0)
+ {
+ time_->tv_usec += microseconds % G_USEC_PER_SEC;
+ time_->tv_sec += microseconds / G_USEC_PER_SEC;
+ if (time_->tv_usec >= G_USEC_PER_SEC)
+ {
+ time_->tv_usec -= G_USEC_PER_SEC;
+ time_->tv_sec++;
+ }
+ }
+ else
+ {
+ microseconds *= -1;
+ time_->tv_usec -= microseconds % G_USEC_PER_SEC;
+ time_->tv_sec -= microseconds / G_USEC_PER_SEC;
+ if (time_->tv_usec < 0)
+ {
+ time_->tv_usec += G_USEC_PER_SEC;
+ time_->tv_sec--;
+ }
+ }
+}
+
+#define __G_TIMER_C__
+#include "galiasdef.c"