1 mike  1.2 //%2006////////////////////////////////////////////////////////////////////////
  2           //
  3           // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
  4           // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
  5           // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
  6           // IBM Corp.; EMC Corporation, The Open Group.
  7           // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
  8           // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
  9           // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
 10           // EMC Corporation; VERITAS Software Corporation; The Open Group.
 11           // Copyright (c) 2006 Hewlett-Packard Development Company, L.P.; IBM Corp.;
 12           // EMC Corporation; Symantec Corporation; The Open Group.
 13           //
 14           // Permission is hereby granted, free of charge, to any person obtaining a copy
 15           // of this software and associated documentation files (the "Software"), to
 16           // deal in the Software without restriction, including without limitation the
 17           // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 18           // sell copies of the Software, and to permit persons to whom the Software is
 19           // furnished to do so, subject to the following conditions:
 20           // 
 21           // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
 22 mike  1.2 // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
 23           // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
 24           // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 25           // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 26           // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 27           // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 28           // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 29           //
 30           //==============================================================================
 31           //
 32           //%/////////////////////////////////////////////////////////////////////////////
 33           
 34           #include "Time.h"
 35           
 36           #if defined(PEGASUS_OS_TYPE_WINDOWS)
 37           # include <windows.h>
 38           # include <sys/timeb.h>
 39           #else
 40           # define USE_GETTIMEOFDAY
 41           #endif
 42           
 43 mike  1.2 #if defined(USE_NTP_GETTIME)
 44           # include <sys/timex.h>
 45           # include <errno.h>
 46           #endif
 47           
 48           #if defined(USE_GETTIMEOFDAY)
 49           # include <sys/time.h>
 50           # include <errno.h>
 51           #endif
 52           
 53           PEGASUS_NAMESPACE_BEGIN
 54           
 55           int Time::gettimeofday(timeval* tv)
 56           {
 57           #if defined(USE_GETTIMEOFDAY)
 58           

 59 kumpf 1.3     if (tv == NULL)

 60 mike  1.2         return EINVAL;
 61           
 62               struct timeval tmp;
 63           
 64               if (::gettimeofday(&tmp, NULL) == 0)
 65               {
 66                   tv->tv_sec = tmp.tv_sec;
 67                   tv->tv_usec = tmp.tv_usec;
 68                   return 0;
 69               }
 70           
 71               return -1;
 72           
 73           #elif defined(USE_NTP_GETTIME)
 74           
 75               if (tv == NULL)
 76                   return EINVAL;
 77           
 78               struct ntptimeval ntp;
 79           
 80               if (ntp_gettime(&ntp) == 0)
 81 mike  1.2     {
 82                   tv->tv_sec = ntp.time.tv_sec;
 83                   tv->tv_usec = ntp.time.tv_usec;
 84                   return 0;
 85               }
 86           
 87               return -1;
 88           
 89           #elif defined(PEGASUS_OS_TYPE_WINDOWS)
 90           
 91               struct _timeb timebuffer;
 92           
 93               if (tv == NULL)
 94                   return -1;
 95           
 96               _ftime(&timebuffer);
 97               tv->tv_sec = long(timebuffer.time);
 98               tv->tv_usec = timebuffer.millitm * 1000;
 99           
100               return 0;
101           
102 mike  1.2 #endif
103           }
104           
105           int Time::subtract(timeval* result, timeval* x, timeval* y)
106           {

107 kumpf 1.3     /* Perform the carry for the later subtraction by updating Y. */
108               if (x->tv_usec < y->tv_usec)
109               {
110                   int nsec = (y->tv_usec - x->tv_usec) / 1000000 + 1;
111                   y->tv_usec -= 1000000 * nsec;
112                   y->tv_sec += nsec;
113               }
114               if (x->tv_usec - y->tv_usec > 1000000)
115               {
116                   int nsec = (x->tv_usec - y->tv_usec) / 1000000;
117                   y->tv_usec += 1000000 * nsec;
118                   y->tv_sec -= nsec;
119               }
120           
121               /* Compute the time remaining to wait.
122                   `tv_usec' is certainly positive. */
123               result->tv_sec = x->tv_sec - y->tv_sec;
124               result->tv_usec = x->tv_usec - y->tv_usec;

125 mike  1.2 

126 kumpf 1.3     /* Return 1 if result is negative. */
127               return x->tv_sec < y->tv_sec;

128 mike  1.2 }
129           
130           PEGASUS_NAMESPACE_END