| /* |
| * libjingle |
| * Copyright 2004--2005, Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 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 AUTHOR 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. |
| */ |
| |
| #include <iostream> |
| #include <cstdlib> |
| #include <cstring> |
| |
| #include "talk/base/time.h" |
| |
| namespace talk_base { |
| |
| #ifdef POSIX |
| #include <sys/time.h> |
| uint32 Time() { |
| struct timeval tv; |
| gettimeofday(&tv, 0); |
| return tv.tv_sec * 1000 + tv.tv_usec / 1000; |
| } |
| #endif |
| |
| #ifdef WIN32 |
| #include <windows.h> |
| uint32 Time() { |
| return GetTickCount(); |
| } |
| #endif |
| |
| uint32 StartTime() { |
| // Close to program execution time |
| static const uint32 g_start = Time(); |
| return g_start; |
| } |
| |
| // Make sure someone calls it so that it gets initialized |
| static uint32 ignore = StartTime(); |
| |
| uint32 ElapsedTime() { |
| return TimeDiff(Time(), StartTime()); |
| } |
| |
| bool TimeIsBetween(uint32 later, uint32 middle, uint32 earlier) { |
| if (earlier <= later) { |
| return ((earlier <= middle) && (middle <= later)); |
| } else { |
| return !((later < middle) && (middle < earlier)); |
| } |
| } |
| |
| int32 TimeDiff(uint32 later, uint32 earlier) { |
| uint32 LAST = 0xFFFFFFFF; |
| uint32 HALF = 0x80000000; |
| if (TimeIsBetween(earlier + HALF, later, earlier)) { |
| if (earlier <= later) { |
| return static_cast<long>(later - earlier); |
| } else { |
| return static_cast<long>(later + (LAST - earlier) + 1); |
| } |
| } else { |
| if (later <= earlier) { |
| return -static_cast<long>(earlier - later); |
| } else { |
| return -static_cast<long>(earlier + (LAST - later) + 1); |
| } |
| } |
| } |
| |
| } // namespace talk_base |