Update copyright dates with scripts/update-copyrights.

[thirdparty/glibc.git] / sysdeps / generic / hp-timing.h

diff --git a/sysdeps/generic/hp-timing.h b/sysdeps/generic/hp-timing.h
index bc36f022c5bb265a8c54f1fd9e81c3446d90b1e4..fb2a6036fc9a208b7d5524c45927c273c96746a8 100644 (file)
--- a/sysdeps/generic/hp-timing.h
+++ b/sysdeps/generic/hp-timing.h
@@ -1,5 +1,5 @@
 /* High precision, low overhead timing functions.  Generic version.
-   Copyright (C) 1998, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1998-2019 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
 
@@ -20,59 +20,17 @@
 #ifndef _HP_TIMING_H
 #define _HP_TIMING_H   1
 
-
 /* There are no generic definitions for the times.  We could write something
    using the `gettimeofday' system call where available but the overhead of
-   the system call might be too high.
-
-   In case a platform supports timers in the hardware the following macros
-   and types must be defined:
-
-   - HP_TIMING_AVAIL: test for availability.
-
-   - HP_TIMING_INLINE: this macro is non-zero if the functionality is not
-     implemented using function calls but instead uses some inlined code
-     which might simply consist of a few assembler instructions.  We have to
-     know this since we might want to use the macros here in places where we
-     cannot make function calls.
-
-   - hp_timing_t: This is the type for variables used to store the time
-     values.
-
-   - HP_TIMING_ZERO: clear `hp_timing_t' object.
-
-   - HP_TIMING_NOW: place timestamp for current time in variable given as
-     parameter.
-
-   - HP_TIMING_DIFF_INIT: do whatever is necessary to be able to use the
-     HP_TIMING_DIFF macro.
-
-   - HP_TIMING_DIFF: compute difference between two times and store it
-     in a third.  Source and destination might overlap.
-
-   - HP_TIMING_ACCUM: add time difference to another variable.  This might
-     be a bit more complicated to implement for some platforms as the
-     operation should be thread-safe and 64bit arithmetic on 32bit platforms
-     is not.
-
-   - HP_TIMING_ACCUM_NT: this is the variant for situations where we know
-     there are no threads involved.
-
-   - HP_TIMING_PRINT: write decimal representation of the timing value into
-     the given string.  This operation need not be inline even though
-     HP_TIMING_INLINE is specified.
-
-*/
+   the system call might be too high.  */
 
 /* Provide dummy definitions.  */
 #define HP_TIMING_AVAIL                (0)
+#define HP_SMALL_TIMING_AVAIL  (0)
 #define HP_TIMING_INLINE       (0)
 typedef int hp_timing_t;
-#define HP_TIMING_ZERO(Var)
 #define HP_TIMING_NOW(var)
-#define HP_TIMING_DIFF_INIT()
 #define HP_TIMING_DIFF(Diff, Start, End)
-#define HP_TIMING_ACCUM(Sum, Diff)
 #define HP_TIMING_ACCUM_NT(Sum, Diff)
 #define HP_TIMING_PRINT(Buf, Len, Val)