X-Git-Url: http://www.lcore.org/git/lcore.git/blobdiff_plain/2f03297fba2a10dbc860018fac7ad07c83b08ce8..0ac6b47e810e6efaebcdbf3075b633e9b4109341:/ltimevalstuff.pas

diff --git a/ltimevalstuff.pas b/ltimevalstuff.pas
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+++ b/ltimevalstuff.pas
@@ -0,0 +1,74 @@
+{ Copyright (C) 2005 Bas Steendijk and Peter Green
+  For conditions of distribution and use, see copyright notice in zlib_license.txt
+  which is included in the package
+  ----------------------------------------------------------------------------- }
+
+unit ltimevalstuff;
+interface
+
+{$ifdef win32}
+  type
+    ttimeval = record
+      tv_sec : longint; 
+      tv_usec : longint; 
+    end;
+{$else}
+  {$ifdef ver1_0}
+    uses linux;
+  {$else}
+    uses baseunix,unix;
+  {$endif}
+{$endif}
+                                
+
+procedure tv_add(var tv:ttimeval;msec:integer);
+function tv_compare(const tv1,tv2:ttimeval):boolean;
+procedure tv_substract(var tv:ttimeval;const tv2:ttimeval);
+procedure msectotimeval(var tv:ttimeval;msec:integer);
+
+//tv_invalidtimebig will always compare as greater than any valid timeval
+//unfortunately unixstuff.inc hasn't worked it's magic yet so we
+//have to ifdef this manually.
+const
+  {$ifdef ver1_0}
+    tv_invalidtimebig : ttimeval = (sec:maxlongint;usec:maxlongint);
+  {$else}
+    
tv_invalidtimebig : ttimeval = (tv_sec:maxlongint;tv_usec:maxlongint);
+
  {$endif}
+implementation
+
+{$i unixstuff.inc}
+
+{add nn msec to tv}
+procedure tv_add(var tv:ttimeval;msec:integer);
+begin
+  inc(tv.tv_usec,msec*1000);
+  inc(tv.tv_sec,tv.tv_usec div 1000000);
+  tv.tv_usec := tv.tv_usec mod 1000000;
+end;
+
+{tv1 >= tv2}
+function tv_compare(const tv1,tv2:ttimeval):boolean;
+begin
+  if tv1.tv_sec = tv2.tv_sec then begin
+    result := tv1.tv_usec >= tv2.tv_usec;
+  end else result := tv1.tv_sec > tv2.tv_sec;
+end;
+
+procedure tv_substract(var tv:ttimeval;const tv2:ttimeval);
+begin
+  dec(tv.tv_usec,tv2.tv_usec);
+  if tv.tv_usec < 0 then begin
+    inc(tv.tv_usec,1000000);
+    dec(tv.tv_sec)
+  end;
+  dec(tv.tv_sec,tv2.tv_sec);
+end;
+
+procedure msectotimeval(var tv:ttimeval;msec:integer);
+begin
+  tv.tv_sec := msec div 1000;
+  tv.tv_usec := (msec mod 1000)*1000;
+end;
+
+end.
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