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/*! \file tbx_timing.h
* \brief TBX timing data structures and macros
*
* This file contains the support data structures and macros for the
* TBX timing facilities.
*
*/
/*
* PM2: Parallel Multithreaded Machine
* Copyright (C) 2001 "the PM2 team" (see AUTHORS file)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#ifndef TBX_TIMING_H
#define TBX_TIMING_H
#include <sys/types.h>
#include <sys/time.h>
/** \defgroup timing_interface timing interface
*
* This is the timing interface
*
* @{
*/
/* Hum hum... Here we suppose that X86ARCH => Pentium! */
#if defined(__i386) || defined(__x86_64__)
typedef unsigned long long tbx_tick_t, *p_tbx_tick_t;
#ifdef __x86_64__
#define TBX_GET_TICK(t) do { \
unsigned int __a,__d; \
asm volatile("rdtsc" : "=a" (__a), "=d" (__d)); \
(t) = ((unsigned long)__a) | (((unsigned long)__d)<<32); \
} while(0)
#else
#define TBX_GET_TICK(t) \
__asm__ volatile("rdtsc" : "=A" (t))
#endif
#define TBX_TICK_RAW_DIFF(t1, t2) \
((t2) - (t1))
#elif defined(ALPHA_ARCH)
typedef unsigned long tbx_tick_t, *p_tbx_tick_t;
#define TBX_GET_TICK(t) \
__asm__ volatile("rpcc %0\n\t" : "=r"(t))
#define TBX_TICK_RAW_DIFF(t1, t2) \
(((t2) & 0xFFFFFFFF) - ((t1) & 0xFFFFFFFF))
#elif defined(__ia64)
typedef unsigned long tbx_tick_t, *p_tbx_tick_t;
#define TBX_GET_TICK(t) \
__asm__ volatile("mov %0=ar%1" : "=r" ((t)) : "i"(44))
#define TBX_TICK_RAW_DIFF(t1, t2) \
((t2) - (t1))
#elif defined(__ppc__) || defined(__powerpc__) || defined(_ARCH_PPC)
typedef unsigned long tbx_tick_t, *p_tbx_tick_t;
#define TBX_GET_TICK(t) __asm__ volatile("mftb %0" : "=r" (t))
#define TBX_TICK_RAW_DIFF(t1, t2) \
((t2) - (t1))
#elif defined(__PPC64__) || defined(__powerpc64__)
typedef unsigned long tbx_tick_t, *p_tbx_tick_t;
#define TBX_GET_TICK(t) __asm__ volatile("mftb %0" : "=r" (t))
#define TBX_TICK_RAW_DIFF(t1, t2) \
((t2) - (t1))
#else
/* fall back to imprecise but portable way */
#define TBX_TIMING_GETTIMEOFDAY
typedef struct timeval tbx_tick_t, *p_tbx_tick_t;
#define TBX_GET_TICK(t) \
gettimeofday(&(t), NULL)
#define TBX_TICK_RAW_DIFF(t1, t2) \
((t2.tv_sec * 1000000L + t2.tv_usec) - \
(t1.tv_sec * 1000000L + t1.tv_usec))
#endif
#define TBX_TICK_DIFF(t1, t2) (TBX_TICK_RAW_DIFF(t1, t2) - tbx_residual)
#define TBX_TIMING_DELAY(t1, t2) tbx_tick2usec(TBX_TICK_DIFF(t1, t2))
extern unsigned long long tbx_residual;
extern tbx_tick_t tbx_new_event;
extern tbx_tick_t tbx_last_event;
char *tbx_tick2str(long long t);
/* @} */
#endif /* TBX_TIMING_H */
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