1 files changed, 186 insertions, 0 deletions
diff --git a/Utilities/cmcurl/lib/timeval.c b/Utilities/cmcurl/lib/timeval.c
new file mode 100644
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+++ b/Utilities/cmcurl/lib/timeval.c
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+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include "timeval.h"
+
+#if defined(WIN32) && !defined(MSDOS)
+
+struct curltime Curl_now(void)
+{
+  /*
+  ** GetTickCount() is available on _all_ Windows versions from W95 up
+  ** to nowadays. Returns milliseconds elapsed since last system boot,
+  ** increases monotonically and wraps once 49.7 days have elapsed.
+  */
+  struct curltime now;
+#if !defined(_WIN32_WINNT) || !defined(_WIN32_WINNT_VISTA) || \
+    (_WIN32_WINNT < _WIN32_WINNT_VISTA)
+  DWORD milliseconds = GetTickCount();
+  now.tv_sec = milliseconds / 1000;
+  now.tv_usec = (milliseconds % 1000) * 1000;
+#else
+  ULONGLONG milliseconds = GetTickCount64();
+  now.tv_sec = (time_t) (milliseconds / 1000);
+  now.tv_usec = (unsigned int) (milliseconds % 1000) * 1000;
+#endif
+
+  return now;
+}
+
+#elif defined(HAVE_CLOCK_GETTIME_MONOTONIC)
+
+struct curltime Curl_now(void)
+{
+  /*
+  ** clock_gettime() is granted to be increased monotonically when the
+  ** monotonic clock is queried. Time starting point is unspecified, it
+  ** could be the system start-up time, the Epoch, or something else,
+  ** in any case the time starting point does not change once that the
+  ** system has started up.
+  */
+  struct timeval now;
+  struct curltime cnow;
+  struct timespec tsnow;
+  if(0 == clock_gettime(CLOCK_MONOTONIC, &tsnow)) {
+    cnow.tv_sec = tsnow.tv_sec;
+    cnow.tv_usec = (unsigned int)(tsnow.tv_nsec / 1000);
+  }
+  /*
+  ** Even when the configure process has truly detected monotonic clock
+  ** availability, it might happen that it is not actually available at
+  ** run-time. When this occurs simply fallback to other time source.
+  */
+#ifdef HAVE_GETTIMEOFDAY
+  else {
+    (void)gettimeofday(&now, NULL);
+    cnow.tv_sec = now.tv_sec;
+    cnow.tv_usec = (unsigned int)now.tv_usec;
+  }
+#else
+  else {
+    cnow.tv_sec = time(NULL);
+    cnow.tv_usec = 0;
+  }
+#endif
+  return cnow;
+}
+
+#elif defined(HAVE_MACH_ABSOLUTE_TIME)
+
+#include <stdint.h>
+#include <mach/mach_time.h>
+
+struct curltime Curl_now(void)
+{
+  /*
+  ** Monotonic timer on Mac OS is provided by mach_absolute_time(), which
+  ** returns time in Mach "absolute time units," which are platform-dependent.
+  ** To convert to nanoseconds, one must use conversion factors specified by
+  ** mach_timebase_info().
+  */
+  static mach_timebase_info_data_t timebase;
+  struct curltime cnow;
+  uint64_t usecs;
+
+  if(0 == timebase.denom)
+    (void) mach_timebase_info(&timebase);
+
+  usecs = mach_absolute_time();
+  usecs *= timebase.numer;
+  usecs /= timebase.denom;
+  usecs /= 1000;
+
+  cnow.tv_sec = usecs / 1000000;
+  cnow.tv_usec = (int)(usecs % 1000000);
+
+  return cnow;
+}
+
+#elif defined(HAVE_GETTIMEOFDAY)
+
+struct curltime Curl_now(void)
+{
+  /*
+  ** gettimeofday() is not granted to be increased monotonically, due to
+  ** clock drifting and external source time synchronization it can jump
+  ** forward or backward in time.
+  */
+  struct timeval now;
+  struct curltime ret;
+  (void)gettimeofday(&now, NULL);
+  ret.tv_sec = now.tv_sec;
+  ret.tv_usec = (int)now.tv_usec;
+  return ret;
+}
+
+#else
+
+struct curltime Curl_now(void)
+{
+  /*
+  ** time() returns the value of time in seconds since the Epoch.
+  */
+  struct curltime now;
+  now.tv_sec = time(NULL);
+  now.tv_usec = 0;
+  return now;
+}
+
+#endif
+
+#if SIZEOF_TIME_T < 8
+#define TIME_MAX INT_MAX
+#define TIME_MIN INT_MIN
+#else
+#define TIME_MAX 9223372036854775807LL
+#define TIME_MIN -9223372036854775807LL
+#endif
+
+/*
+ * Returns: time difference in number of milliseconds. For too large diffs it
+ * returns max value.
+ *
+ * @unittest: 1323
+ */
+timediff_t Curl_timediff(struct curltime newer, struct curltime older)
+{
+  timediff_t diff = newer.tv_sec-older.tv_sec;
+  if(diff >= (TIME_MAX/1000))
+    return TIME_MAX;
+  else if(diff <= (TIME_MIN/1000))
+    return TIME_MIN;
+  return diff * 1000 + (newer.tv_usec-older.tv_usec)/1000;
+}
+
+/*
+ * Returns: time difference in number of microseconds. For too large diffs it
+ * returns max value.
+ */
+timediff_t Curl_timediff_us(struct curltime newer, struct curltime older)
+{
+  timediff_t diff = newer.tv_sec-older.tv_sec;
+  if(diff >= (TIME_MAX/1000000))
+    return TIME_MAX;
+  else if(diff <= (TIME_MIN/1000000))
+    return TIME_MIN;
+  return diff * 1000000 + newer.tv_usec-older.tv_usec;
+}