Change int_range<2> to infinite precision.

[thirdparty/gcc.git] / libiberty / getruntime.c

diff --git a/libiberty/getruntime.c b/libiberty/getruntime.c
index c7a33d78d7cef7f49a3aeab74964789dbcd55e3c..0ad4244c7483a05bf20bfc47db11db0786d9a7e6 100644 (file)
--- a/libiberty/getruntime.c
+++ b/libiberty/getruntime.c
@@ -1,5 +1,5 @@
 /* Return time used so far, in microseconds.
-   Copyright (C) 1994, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1994-2024 Free Software Foundation, Inc.
 
 This file is part of the libiberty library.
 Libiberty is free software; you can redistribute it and/or
@@ -14,22 +14,36 @@ Library General Public License for more details.
 
 You should have received a copy of the GNU Library General Public
 License along with libiberty; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA.  */
+not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+Boston, MA 02110-1301, USA.  */
 
 #include "config.h"
 
 #include "ansidecl.h"
 #include "libiberty.h"
 
+/* On some systems (such as WindISS), you must include <sys/types.h>
+   to get the definition of "time_t" before you include <time.h>.  */
+#include <sys/types.h>
+
 /* There are several ways to get elapsed execution time; unfortunately no
    single way is available for all host systems, nor are there reliable
    ways to find out which way is correct for a given host. */
 
-#include <time.h>
+#ifdef TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  ifdef HAVE_TIME_H
+#   include <time.h>
+#  endif
+# endif
+#endif
 
 #if defined (HAVE_GETRUSAGE) && defined (HAVE_SYS_RESOURCE_H)
-#include <sys/time.h>
 #include <sys/resource.h>
 #endif
 
@@ -40,6 +54,10 @@ Boston, MA 02111-1307, USA.  */
 #include <sys/times.h>
 #endif
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
 /* This is a fallback; if wrong, it will likely make obviously wrong
    results. */
 
@@ -47,17 +65,41 @@ Boston, MA 02111-1307, USA.  */
 #define CLOCKS_PER_SEC 1
 #endif
 
-#if defined (HAVE_TIMES) && ! defined (HZ)
-#define HZ CLOCKS_PER_SEC
+#ifndef RUSAGE_SELF
+#define RUSAGE_SELF 0
+#endif
+
+#ifdef _SC_CLK_TCK
+#define GNU_HZ  sysconf(_SC_CLK_TCK)
+#else
+#ifdef HZ
+#define GNU_HZ  HZ
+#else
+#ifdef CLOCKS_PER_SEC
+#define GNU_HZ  CLOCKS_PER_SEC
+#endif
 #endif
+#endif
+
+/*
+
+@deftypefn Replacement long get_run_time (void)
+
+Returns the time used so far, in microseconds.  If possible, this is
+the time used by this process, else it is the elapsed time since the
+process started.
+
+@end deftypefn
+
+*/
 
 long
-get_run_time ()
+get_run_time (void)
 {
 #if defined (HAVE_GETRUSAGE) && defined (HAVE_SYS_RESOURCE_H)
   struct rusage rusage;
 
-  getrusage (0, &rusage);
+  getrusage (RUSAGE_SELF, &rusage);
   return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec
          + rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec);
 #else /* ! HAVE_GETRUSAGE */
@@ -65,7 +107,7 @@ get_run_time ()
   struct tms tms;
 
   times (&tms);
-  return (tms.tms_utime + tms.tms_stime) * (1000000 / HZ);
+  return (tms.tms_utime + tms.tms_stime) * (1000000 / GNU_HZ);
 #else /* ! HAVE_TIMES */
   /* Fall back on clock and hope it's correctly implemented. */
   const long clocks_per_sec = CLOCKS_PER_SEC;