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authorrpj <rpj>2002-02-18 03:16:52 +0000
committerrpj <rpj>2002-02-18 03:16:52 +0000
commita416ab17ecf9f2cb0f1e3f7bd645a8d1ce690ca2 (patch)
tree72f776cd64e48824a5578ff7a523bc69097143b4 /ptw32_timespec.c
parente6f1797e9e9925ae7f9dda54806ef8f52ae3ed07 (diff)
Major reorganisation of source code; new routine and tests added.
Diffstat (limited to 'ptw32_timespec.c')
-rw-r--r--ptw32_timespec.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/ptw32_timespec.c b/ptw32_timespec.c
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+++ b/ptw32_timespec.c
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+/*
+ * ptw32_timespec.c
+ *
+ * Description:
+ * This translation unit implements routines which are private to
+ * the implementation and may be used throughout it.
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Pthreads-win32 - POSIX Threads Library for Win32
+ * Copyright(C) 1998 John E. Bossom
+ * Copyright(C) 1999,2002 Pthreads-win32 contributors
+ *
+ * Contact Email: rpj@ise.canberra.edu.au
+ *
+ * The current list of contributors is contained
+ * in the file CONTRIBUTORS included with the source
+ * code distribution. The list can also be seen at the
+ * following World Wide Web location:
+ * http://sources.redhat.com/pthreads-win32/contributors.html
+ *
+ * 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 in the file COPYING.LIB;
+ * if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include "pthread.h"
+#include "implement.h"
+
+
+#ifdef NEED_FTIME
+
+/*
+ * time between jan 1, 1601 and jan 1, 1970 in units of 100 nanoseconds
+ */
+#define PTW32_TIMESPEC_TO_FILETIME_OFFSET \
+ ( ((LONGLONG) 27111902 << 32) + (LONGLONG) 3577643008 )
+
+INLINE void
+ptw32_timespec_to_filetime(const struct timespec *ts, FILETIME *ft)
+ /*
+ * -------------------------------------------------------------------
+ * converts struct timespec
+ * where the time is expressed in seconds and nanoseconds from Jan 1, 1970.
+ * into FILETIME (as set by GetSystemTimeAsFileTime), where the time is
+ * expressed in 100 nanoseconds from Jan 1, 1601,
+ * -------------------------------------------------------------------
+ */
+{
+ *(LONGLONG *)ft = ts->tv_sec * 10000000
+ + (ts->tv_nsec + 50) / 100
+ + PTW32_TIMESPEC_TO_FILETIME_OFFSET;
+}
+
+INLINE void
+ptw32_filetime_to_timespec(const FILETIME *ft, struct timespec *ts)
+ /*
+ * -------------------------------------------------------------------
+ * converts FILETIME (as set by GetSystemTimeAsFileTime), where the time is
+ * expressed in 100 nanoseconds from Jan 1, 1601,
+ * into struct timespec
+ * where the time is expressed in seconds and nanoseconds from Jan 1, 1970.
+ * -------------------------------------------------------------------
+ */
+{
+ ts->tv_sec = (int)((*(LONGLONG *)ft - PTW32_TIMESPEC_TO_FILETIME_OFFSET) / 10000000);
+ ts->tv_nsec = (int)((*(LONGLONG *)ft - PTW32_TIMESPEC_TO_FILETIME_OFFSET - ((LONGLONG)ts->tv_sec * (LONGLONG)10000000)) * 100);
+}
+
+#endif /* NEED_FTIME */