2 * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief OS abstraction from time measurement
23 * @author Sebastian Hack, Michael Beck, Matthias Braun
26 #ifndef FIRM_STAT_TIMING_H
27 #define FIRM_STAT_TIMING_H
29 #if defined(__i386__) || defined(_M_IX86)
32 typedef unsigned long long timing_ticks_t;
33 static inline timing_ticks_t __timing_ticks(void) { timing_ticks_t result; __asm__ __volatile__ ("rdtsc" : "=A" (result)); return result; }
34 #elif defined(_MSC_VER)
35 /* win32 implementation using rdtsc */
36 typedef unsigned __int64 timing_ticks_t;
37 static __inline timing_ticks_t __timing_ticks(void) { __asm { rdtsc } }
39 #error need a 64bit int type
42 #define timing_ticks(t) ((t) = __timing_ticks())
43 #define timing_ticks_init(t) ((t) = 0)
44 #define timing_ticks_cmp(a, b, cmp) ((a) cmp (b))
45 #define timing_ticks_sub(r, a) ((r) = (r) - (a))
46 #define timing_ticks_add(r, a) ((r) = (r) + (a))
47 #define timing_ticks_ulong(t) ((unsigned long) (t))
48 #define timing_ticks_dbl(t) ((double) (t))
54 typedef struct timeval timing_ticks_t;
55 #define timing_ticks(t) (gettimeofday(&(t), NULL))
56 #define timing_ticks_init(t) memset(&(t), 0, sizeof(t))
59 * This shamelessly stolen and modified from glibc's
60 * /usr/include/sys/time.h
62 #define timing_ticks_cmp(a, b, CMP) \
63 (((a).tv_sec == (b).tv_sec) ? \
64 ((a).tv_usec CMP (b).tv_usec) : \
65 ((a).tv_sec CMP (b).tv_sec))
67 #define timing_ticks_add(r, a) \
69 (r).tv_sec = (r).tv_sec + (a).tv_sec; \
70 (r).tv_usec = (r).tv_usec + (a).tv_usec; \
71 if ((r).tv_usec >= 1000000) { \
73 (r).tv_usec -= 1000000; \
77 #define timing_ticks_sub(r, a) \
79 (r).tv_sec = (r).tv_sec - (a).tv_sec; \
80 (r).tv_usec = (r).tv_usec - (a).tv_usec; \
81 if ((r).tv_usec < 0) { \
83 (r).tv_usec += 1000000; \
87 #define timing_ticks_ulong(t) ((unsigned long) ((t).tv_usec + 1000000 * (t).tv_sec))
88 #define timing_ticks_dbl(t) (((t).tv_usec + 1000000.0 * (t).tv_sec))
92 void timing_enter_max_prio(void);
93 void timing_leave_max_prio(void);