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) || defined(_M_X64)
32 typedef unsigned long long timing_ticks_t;
33 static inline timing_ticks_t __timing_ticks(void)
37 __asm__ volatile("rdtsc" : "=a" (l), "=d" (h));
38 return (timing_ticks_t)h << 32 | l;
41 #elif defined(_MSC_VER)
44 typedef unsigned __int64 timing_ticks_t;
45 static __inline timing_ticks_t __timing_ticks(void) { return __rdtsc(); }
47 #error need a 64bit int type
50 #define timing_ticks(t) ((t) = __timing_ticks())
51 #define timing_ticks_init(t) ((t) = 0)
52 #define timing_ticks_cmp(a, b, cmp) ((a) cmp (b))
53 #define timing_ticks_sub(r, a) ((r) = (r) - (a))
54 #define timing_ticks_add(r, a) ((r) = (r) + (a))
55 #define timing_ticks_ulong(t) ((unsigned long) (t))
56 #define timing_ticks_dbl(t) ((double) (t))
58 #else /* !__i386__ && !__x86_64 */
62 typedef struct timeval timing_ticks_t;
63 #define timing_ticks(t) (gettimeofday(&(t), NULL))
64 #define timing_ticks_init(t) memset(&(t), 0, sizeof(t))
67 * This shamelessly stolen and modified from glibc's
68 * /usr/include/sys/time.h
70 #define timing_ticks_cmp(a, b, CMP) \
71 (((a).tv_sec == (b).tv_sec) ? \
72 ((a).tv_usec CMP (b).tv_usec) : \
73 ((a).tv_sec CMP (b).tv_sec))
75 #define timing_ticks_add(r, a) \
77 (r).tv_sec = (r).tv_sec + (a).tv_sec; \
78 (r).tv_usec = (r).tv_usec + (a).tv_usec; \
79 if ((r).tv_usec >= 1000000) { \
81 (r).tv_usec -= 1000000; \
85 #define timing_ticks_sub(r, a) \
87 (r).tv_sec = (r).tv_sec - (a).tv_sec; \
88 (r).tv_usec = (r).tv_usec - (a).tv_usec; \
89 if ((r).tv_usec < 0) { \
91 (r).tv_usec += 1000000; \
95 #define timing_ticks_ulong(t) ((unsigned long) ((t).tv_usec + 1000000 * (t).tv_sec))
96 #define timing_ticks_dbl(t) (((t).tv_usec + 1000000.0 * (t).tv_sec))
100 void timing_enter_max_prio(void);
101 void timing_leave_max_prio(void);