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+ /*
+ ** OSSP uuid - Universally Unique Identifier
+ ** Copyright (c) 2004-2008 Ralf S. Engelschall <rse@engelschall.com>
+ ** Copyright (c) 2004-2008 The OSSP Project <http://www.ossp.org/>
+ **
+ ** This file is part of OSSP uuid, a library for the generation
+ ** of UUIDs which can found at http://www.ossp.org/pkg/lib/uuid/
+ **
+ ** Permission to use, copy, modify, and distribute this software for
+ ** any purpose with or without fee is hereby granted, provided that
+ ** the above copyright notice and this permission notice appear in all
+ ** copies.
+ **
+ ** THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ ** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ ** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ ** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
+ ** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ ** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ ** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ ** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ ** SUCH DAMAGE.
+ **
+ ** uuid_time.c: Time Management
+ */
+
+ /* own headers (part (1/2) */
+ #include "uuid_ac.h"
+
+ /* system headers */
+ #include <stdlib.h>
+ #include <unistd.h>
+ #include <time.h>
+ #ifdef HAVE_SYS_TIME_H
+ #include <sys/time.h>
+ #endif
+ #ifdef HAVE_SYS_TYPES_H
+ #include <sys/types.h>
+ #endif
+ #ifdef HAVE_SYS_SELECT_H
+ #include <sys/select.h>
+ #endif
+
+ /* own headers (part (1/2) */
+ #include "uuid_time.h"
+
+ /* POSIX gettimeofday(2) abstraction */
+ int time_gettimeofday(struct timeval *tv, struct timezone *tz)
+ {
+ #if defined(WIN32)
+ /* Windows emulation */
+ FILETIME ft;
+ LARGE_INTEGER li;
+ __int64 t;
+ static int tzflag;
+
+ #if !defined(__GNUC__)
+ #define EPOCHFILETIME 116444736000000000i64
+ #else
+ #define EPOCHFILETIME 116444736000000000LL
+ #endif
+ if (tv != NULL) {
+ GetSystemTimeAsFileTime(&ft);
+ li.LowPart = ft.dwLowDateTime;
+ li.HighPart = ft.dwHighDateTime;
+ t = li.QuadPart;
+ t -= EPOCHFILETIME;
+ t /= 10;
+ tv->tv_sec = (long)(t / 1000000);
+ tv->tv_usec = (long)(t % 1000000);
+ }
+ if (tz != NULL) {
+ if (!tzflag) {
+ _tzset();
+ tzflag++;
+ }
+ tz->tz_minuteswest = _timezone / 60;
+ tz->tz_dsttime = _daylight;
+ }
+ return 0;
+ #else
+ /* POSIX pass-through */
+ return gettimeofday(tv, tz);
+ #endif
+ }
+
+ /* BSD usleep(3) abstraction */
+ int time_usleep(long usec)
+ {
+ #if defined(WIN32) && defined(HAVE_SLEEP)
+ /* Win32 newer Sleep(3) variant */
+ Sleep(usec / 1000);
+ #elif defined(WIN32)
+ /* Win32 older _sleep(3) variant */
+ _sleep(usec / 1000);
+ #elif defined(HAVE_NANOSLEEP)
+ /* POSIX newer nanosleep(3) variant */
+ struct timespec ts;
+ ts.tv_sec = 0;
+ ts.tv_nsec = 1000 * usec;
+ nanosleep(&ts, NULL);
+ #else
+ /* POSIX older select(2) variant */
+ struct timeval tv;
+ tv.tv_sec = 0;
+ tv.tv_usec = usec;
+ select(0, NULL, NULL, NULL, &tv);
+ #endif
+ return 0;
+ }
+
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