root/opal/mca/pmix/pmix4x/pmix/src/atomics/sys/arm64/timer.h

INCLUDED FROM

DEFINITIONS

1. pmix_sys_timer_get_cycles
2. pmix_sys_timer_freq

   1 /* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
   2 /*
   3  * Copyright (c) 2008      The University of Tennessee and The University
   4  *                         of Tennessee Research Foundation.  All rights
   5  *                         reserved.
   6  * Copyright (c) 2016      Broadcom Limited. All rights reserved.
   7  * Copyright (c) 2016      Los Alamos National Security, LLC. All rights
   8  *                         reserved.
   9  * $COPYRIGHT$
  10  *
  11  * Additional copyrights may follow
  12  *
  13  * $HEADER$
  14  */
  15 
  16 #ifndef PMIX_SYS_ARCH_TIMER_H
  17 #define PMIX_SYS_ARCH_TIMER_H 1
  18 
  19 #include <sys/times.h>
  20 
  21 typedef uint64_t pmix_timer_t;
  22 
  23 static inline pmix_timer_t
  24 pmix_sys_timer_get_cycles(void)
  25 {
  26     pmix_timer_t ret;
  27 
  28     __asm__ __volatile__ ("isb" ::: "memory");
  29     __asm__ __volatile__ ("mrs %0,  CNTVCT_EL0" : "=r" (ret));
  30 
  31     return ret;
  32 }
  33 
  34 
  35 static inline pmix_timer_t
  36 pmix_sys_timer_freq(void)
  37 {
  38     pmix_timer_t freq;
  39     __asm__ __volatile__ ("mrs %0,  CNTFRQ_EL0" : "=r" (freq));
  40     return (pmix_timer_t)(freq);
  41 }
  42 
  43 #define PMIX_HAVE_SYS_TIMER_GET_CYCLES 1
  44 
  45 #endif /* ! PMIX_SYS_ARCH_TIMER_H */