| /* GLIB - Library of useful routines for C programming |
| * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
| * |
| * 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" |
| |
| #include <stdlib.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 "gthread.h" |
| #include "galias.h" |
| |
| #define G_NSEC_PER_SEC 1000000000 |
| |
| #define GETTIME(v) (v = g_thread_gettime ()) |
| |
| struct _GTimer |
| { |
| guint64 start; |
| guint64 end; |
| |
| guint active : 1; |
| }; |
| |
| |
| GTimer* |
| g_timer_new (void) |
| { |
| GTimer *timer; |
| |
| timer = g_new (GTimer, 1); |
| timer->active = TRUE; |
| |
| GETTIME (timer->start); |
| |
| return timer; |
| } |
| |
| void |
| g_timer_destroy (GTimer *timer) |
| { |
| g_return_if_fail (timer != NULL); |
| |
| g_free (timer); |
| } |
| |
| void |
| g_timer_start (GTimer *timer) |
| { |
| g_return_if_fail (timer != NULL); |
| |
| timer->active = TRUE; |
| |
| GETTIME (timer->start); |
| } |
| |
| void |
| g_timer_stop (GTimer *timer) |
| { |
| g_return_if_fail (timer != NULL); |
| |
| timer->active = FALSE; |
| |
| GETTIME (timer->end); |
| } |
| |
| void |
| g_timer_reset (GTimer *timer) |
| { |
| g_return_if_fail (timer != NULL); |
| |
| GETTIME (timer->start); |
| } |
| |
| void |
| g_timer_continue (GTimer *timer) |
| { |
| guint64 elapsed; |
| |
| 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. |
| */ |
| |
| elapsed = timer->end - timer->start; |
| |
| GETTIME (timer->start); |
| |
| timer->start -= elapsed; |
| |
| timer->active = TRUE; |
| } |
| |
| gdouble |
| g_timer_elapsed (GTimer *timer, |
| gulong *microseconds) |
| { |
| gdouble total; |
| gint64 elapsed; |
| |
| g_return_val_if_fail (timer != NULL, 0); |
| |
| if (timer->active) |
| GETTIME (timer->end); |
| |
| elapsed = timer->end - timer->start; |
| |
| total = elapsed / 1e9; |
| |
| if (microseconds) |
| *microseconds = (elapsed / 1000) % 1000000; |
| |
| return total; |
| } |
| |
| 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 */ |
| # ifdef HAVE_NSLEEP |
| /* on AIX, nsleep is analogous to nanosleep */ |
| struct timespec request, remaining; |
| request.tv_sec = microseconds / G_USEC_PER_SEC; |
| request.tv_nsec = 1000 * (microseconds % G_USEC_PER_SEC); |
| while (nsleep (&request, &remaining) == -1 && errno == EINTR) |
| request = remaining; |
| # else /* !HAVE_NSLEEP */ |
| 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_NSLEEP */ |
| # 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_. |
| **/ |
| 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--; |
| } |
| } |
| } |
| |
| /* converts a broken down date representation, relative to UTC, to |
| * a timestamp; it uses timegm() if it's available. |
| */ |
| static time_t |
| mktime_utc (struct tm *tm) |
| { |
| time_t retval; |
| |
| #ifndef HAVE_TIMEGM |
| static const gint days_before[] = |
| { |
| 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 |
| }; |
| #endif |
| |
| #ifndef HAVE_TIMEGM |
| if (tm->tm_mon < 0 || tm->tm_mon > 11) |
| return (time_t) -1; |
| |
| retval = (tm->tm_year - 70) * 365; |
| retval += (tm->tm_year - 68) / 4; |
| retval += days_before[tm->tm_mon] + tm->tm_mday - 1; |
| |
| if (tm->tm_year % 4 == 0 && tm->tm_mon < 2) |
| retval -= 1; |
| |
| retval = ((((retval * 24) + tm->tm_hour) * 60) + tm->tm_min) * 60 + tm->tm_sec; |
| #else |
| retval = timegm (tm); |
| #endif /* !HAVE_TIMEGM */ |
| |
| return retval; |
| } |
| |
| /** |
| * g_time_val_from_iso8601: |
| * @iso_date: an ISO 8601 encoded date string |
| * @time_: a #GTimeVal |
| * |
| * Converts a string containing an ISO 8601 encoded date and time |
| * to a #GTimeVal and puts it into @time_. |
| * |
| * Return value: %TRUE if the conversion was successful. |
| * |
| * Since: 2.12 |
| */ |
| gboolean |
| g_time_val_from_iso8601 (const gchar *iso_date, |
| GTimeVal *time_) |
| { |
| struct tm tm; |
| long val; |
| |
| g_return_val_if_fail (iso_date != NULL, FALSE); |
| g_return_val_if_fail (time_ != NULL, FALSE); |
| |
| /* Ensure that the first character is a digit, |
| * the first digit of the date, otherwise we don't |
| * have an ISO 8601 date */ |
| while (g_ascii_isspace (*iso_date)) |
| iso_date++; |
| |
| if (*iso_date == '\0') |
| return FALSE; |
| |
| if (!g_ascii_isdigit (*iso_date) && *iso_date != '-' && *iso_date != '+') |
| return FALSE; |
| |
| val = strtoul (iso_date, (char **)&iso_date, 10); |
| if (*iso_date == '-') |
| { |
| /* YYYY-MM-DD */ |
| tm.tm_year = val - 1900; |
| iso_date++; |
| tm.tm_mon = strtoul (iso_date, (char **)&iso_date, 10) - 1; |
| |
| if (*iso_date++ != '-') |
| return FALSE; |
| |
| tm.tm_mday = strtoul (iso_date, (char **)&iso_date, 10); |
| } |
| else |
| { |
| /* YYYYMMDD */ |
| tm.tm_mday = val % 100; |
| tm.tm_mon = (val % 10000) / 100 - 1; |
| tm.tm_year = val / 10000 - 1900; |
| } |
| |
| if (*iso_date++ != 'T') |
| return FALSE; |
| |
| val = strtoul (iso_date, (char **)&iso_date, 10); |
| if (*iso_date == ':') |
| { |
| /* hh:mm:ss */ |
| tm.tm_hour = val; |
| iso_date++; |
| tm.tm_min = strtoul (iso_date, (char **)&iso_date, 10); |
| |
| if (*iso_date++ != ':') |
| return FALSE; |
| |
| tm.tm_sec = strtoul (iso_date, (char **)&iso_date, 10); |
| } |
| else |
| { |
| /* hhmmss */ |
| tm.tm_sec = val % 100; |
| tm.tm_min = (val % 10000) / 100; |
| tm.tm_hour = val / 10000; |
| } |
| |
| time_->tv_sec = mktime_utc (&tm); |
| time_->tv_usec = 0; |
| |
| if (*iso_date == ',' || *iso_date == '.') |
| { |
| glong mul = 100000; |
| |
| while (g_ascii_isdigit (*++iso_date)) |
| { |
| time_->tv_usec += (*iso_date - '0') * mul; |
| mul /= 10; |
| } |
| } |
| |
| if (*iso_date == '+' || *iso_date == '-') |
| { |
| gint sign = (*iso_date == '+') ? -1 : 1; |
| |
| val = strtoul (iso_date + 1, (char **)&iso_date, 10); |
| |
| if (*iso_date == ':') |
| val = 60 * val + strtoul (iso_date + 1, (char **)&iso_date, 10); |
| else |
| val = 60 * (val / 100) + (val % 100); |
| |
| time_->tv_sec += (time_t) (60 * val * sign); |
| } |
| else if (*iso_date++ != 'Z') |
| return FALSE; |
| |
| while (g_ascii_isspace (*iso_date)) |
| iso_date++; |
| |
| return *iso_date == '\0'; |
| } |
| |
| /** |
| * g_time_val_to_iso8601: |
| * @time_: a #GTimeVal |
| * |
| * Converts @time_ into an ISO 8601 encoded string, relative to the |
| * Coordinated Universal Time (UTC). |
| * |
| * Return value: a newly allocated string containing an ISO 8601 date |
| * |
| * Since: 2.12 |
| */ |
| gchar * |
| g_time_val_to_iso8601 (GTimeVal *time_) |
| { |
| gchar *retval; |
| struct tm *tm; |
| #ifdef HAVE_GMTIME_R |
| struct tm tm_; |
| #endif |
| time_t secs; |
| |
| g_return_val_if_fail (time_->tv_usec >= 0 && time_->tv_usec < G_USEC_PER_SEC, NULL); |
| |
| secs = time_->tv_sec; |
| #ifdef _WIN32 |
| tm = gmtime (&secs); |
| #else |
| #ifdef HAVE_GMTIME_R |
| tm = gmtime_r (&secs, &tm_); |
| #else |
| tm = gmtime (&secs); |
| #endif |
| #endif |
| |
| if (time_->tv_usec != 0) |
| { |
| /* ISO 8601 date and time format, with fractionary seconds: |
| * YYYY-MM-DDTHH:MM:SS.MMMMMMZ |
| */ |
| retval = g_strdup_printf ("%4d-%02d-%02dT%02d:%02d:%02d.%06ldZ", |
| tm->tm_year + 1900, |
| tm->tm_mon + 1, |
| tm->tm_mday, |
| tm->tm_hour, |
| tm->tm_min, |
| tm->tm_sec, |
| time_->tv_usec); |
| } |
| else |
| { |
| /* ISO 8601 date and time format: |
| * YYYY-MM-DDTHH:MM:SSZ |
| */ |
| retval = g_strdup_printf ("%4d-%02d-%02dT%02d:%02d:%02dZ", |
| tm->tm_year + 1900, |
| tm->tm_mon + 1, |
| tm->tm_mday, |
| tm->tm_hour, |
| tm->tm_min, |
| tm->tm_sec); |
| } |
| |
| return retval; |
| } |
| |
| #define __G_TIMER_C__ |
| #include "galiasdef.c" |