diff -r 000000000000 -r e4d67989cc36 glib/libglib/src/gtimer.c --- /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 +#endif /* HAVE_UNISTD_H */ + +#ifndef G_OS_WIN32 +#include +#include +#include +#endif /* G_OS_WIN32 */ + +#ifdef G_OS_WIN32 +#include +#endif /* G_OS_WIN32 */ + +#include "glib.h" +#include "galias.h" + +#ifdef __SYMBIAN32__ +#include +#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"