import newlib-2000-02-17 snapshot

1 files changed, 69 insertions, 0 deletions

diff --git a/newlib/libc/time/clock.c b/newlib/libc/time/clock.c
new file mode 100644
index 000000000..b15915d6a
--- /dev/null
+++ b/newlib/libc/time/clock.c
@@ -0,0 +1,69 @@
+/* NetWare can not use this implementation of clock, since it does not
+   have times or any similar function.  It provides its own version of
+   clock in clib.nlm.  If we can not use clib.nlm, then we must write
+   clock in sys/netware.  */
+
+#ifdef CLOCK_PROVIDED
+
+int _dummy_clock = 1;
+
+#else
+
+/*
+ * clock.c
+ * Original Author:	G. Haley
+ *
+ * Determines the processor time used by the program since invocation. The time
+ * in seconds is the value returned divided by the value of the macro CLK_TCK.
+ * If the processor time used is not available, (clock_t) -1 is returned.
+ */
+
+/*
+FUNCTION
+<<clock>>---cumulative processor time
+
+INDEX
+	clock
+
+ANSI_SYNOPSIS
+	#include <time.h>
+	clock_t clock(void);
+
+TRAD_SYNOPSIS
+	#include <time.h>
+	clock_t clock();
+
+DESCRIPTION
+Calculates the best available approximation of the cumulative amount
+of time used by your program since it started.  To convert the result
+into seconds, divide by the macro <<CLOCKS_PER_SEC>>.
+
+RETURNS
+The amount of processor time used so far by your program, in units
+defined by the machine-dependent macro <<CLOCKS_PER_SEC>>.  If no
+measurement is available, the result is <<-1>>.
+
+PORTABILITY
+ANSI C requires <<clock>> and <<CLOCKS_PER_SEC>>.
+
+Supporting OS subroutine required: <<times>>.
+*/
+
+#include <time.h>
+#include <sys/times.h>
+#include <reent.h>
+
+clock_t 
+clock ()
+{
+  struct tms tim_s;
+  clock_t res;
+
+  if ((res = (clock_t) _times_r (_REENT, &tim_s)) != -1)
+    res = (clock_t) (tim_s.tms_utime + tim_s.tms_stime +
+		     tim_s.tms_cutime + tim_s.tms_cstime);
+
+  return res;
+}
+
+#endif /* CLOCK_PROVIDED */