Get system timestamp less often (only after sleeping/selecting)

src/network/network.cc

@@ -40,19 +40,13 @@
 #include <errno.h>
 #include <unistd.h>
 
-#if HAVE_CLOCK_GETTIME
- #include <time.h>
-#elif HAVE_MACH_ABSOLUTE_TIME
- #include <mach/mach_time.h>
-#elif HAVE_GETTIMEOFDAY
- #include <sys/time.h>
-#endif
-
 #include "dos_assert.h"
 #include "byteorder.h"
 #include "network.h"
 #include "crypto.h"
 
+#include "timestamp.h"
+
 using namespace std;
 using namespace Network;
 using namespace Crypto;
@@ -386,41 +380,7 @@ int Connection::port( void ) const
 
 uint64_t Network::timestamp( void )
 {
-#if HAVE_CLOCK_GETTIME
-  struct timespec tp;
-
-  if ( clock_gettime( CLOCK_MONOTONIC, &tp ) < 0 ) {
-    throw NetworkException( "clock_gettime", errno );
-  }
-
-  uint64_t millis = tp.tv_nsec / 1000000;
-  millis += uint64_t( tp.tv_sec ) * 1000;
-
-  return millis;
-#elif HAVE_MACH_ABSOLUTE_TIME
-  static mach_timebase_info_data_t s_timebase_info;
-
-  if (s_timebase_info.denom == 0) {
-    mach_timebase_info(&s_timebase_info);
-  }
-
-  // NB: mach_absolute_time() returns "absolute time units"
-  // We need to apply a conversion to get milliseconds.
-  return ((mach_absolute_time() * s_timebase_info.numer) / (1000000 * s_timebase_info.denom));
-#elif HAVE_GETTIMEOFDAY
-  // NOTE: If time steps backwards, timeouts may be confused.
-  struct timeval tv;
-  if ( gettimeofday(&tv, NULL) ) {
-    throw NetworkException( "gettimeofday", errno );
-  }
-
-  uint64_t millis = tv.tv_usec / 1000;
-  millis += uint64_t( tv.tv_sec ) * 1000;
-
-  return millis;
-#else
-# error "Don't know how to get a timestamp on this platform"
-#endif
+  return frozen_timestamp();
 }
 
 uint16_t Network::timestamp16( void )