/usr/include/FLINT/profiler.h is in libflint-dev 1.011-2.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 | /*============================================================================
This file is part of FLINT.
FLINT 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.
FLINT 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.
You should have received a copy of the GNU General Public License
along with FLINT; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===============================================================================*/
/******************************************************************************
Timing/profiling
(C) 2007 William Hart and David Harvey
******************************************************************************/
#include <sys/time.h>
#include <sys/resource.h>
#ifndef FLINT_PROFILER_H
#define FLINT_PROFILER_H
#ifdef __cplusplus
extern "C" {
#endif
// number of independent global clocks
#define FLINT_NUM_CLOCKS 20
// If this flag is set, profiling will use a cycle counter *if one is
// available* (otherwise this flag is ignored)
#define FLINT_USE_CYCLE_COUNTER 1
// cycles/second
#define FLINT_CLOCKSPEED 1804121000.0
extern double clock_last[FLINT_NUM_CLOCKS];
extern double clock_accum[FLINT_NUM_CLOCKS];
#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
// Relative timings on X86 machines running gcc
#define FLINT_HAVE_CYCLE_COUNTER 1
static inline double get_cycle_counter()
{
// dirty: do we need to ensure these are 32-bit types?
unsigned hi;
unsigned lo;
__asm("rdtsc; movl %%edx,%0; movl %%eax,%1"
: "=r" (hi), "=r" (lo)
:
: "%edx", "%eax");
return (double) hi * (1 << 30) * 4 + lo;
}
#else
#define FLINT_HAVE_CYCLE_COUNTER 0
#endif
/*
Here we define FLINT_CLOCK_SCALE_FACTOR, which converts the output of
get_current_time() into microseconds
*/
#if FLINT_HAVE_CYCLE_COUNTER && FLINT_USE_CYCLE_COUNTER
// microseconds per cycle
#define FLINT_CLOCK_SCALE_FACTOR (1000000.0 / FLINT_CLOCKSPEED)
#else
// we'll use getrusage, which is already in microseconds
#define FLINT_CLOCK_SCALE_FACTOR 1.0
#endif
static inline double get_current_time()
{
#if FLINT_HAVE_CYCLE_COUNTER && FLINT_USE_CYCLE_COUNTER
return get_cycle_counter();
#else
// user time in microseconds
struct rusage x;
getrusage(RUSAGE_SELF, &x);
return x.ru_utime.tv_sec * 1000000.0 + x.ru_utime.tv_usec;
#endif
}
static inline void init_clock(unsigned long n)
{
clock_accum[n] = 0.0;
}
static inline void init_all_clocks()
{
for (unsigned long i = 0; i < FLINT_NUM_CLOCKS; i++)
clock_accum[i] = 0.0;
}
static inline double get_clock(unsigned long n)
{
return clock_accum[n] * FLINT_CLOCK_SCALE_FACTOR;
}
static inline void start_clock(unsigned long n)
{
clock_last[n] = get_current_time();
}
static inline void stop_clock(unsigned long n)
{
double now = get_current_time();
clock_accum[n] += (now - clock_last[n]);
}
/******************************************************************************
Framework for repeatedly sampling a single target
******************************************************************************/
// A profiling target (a function called with one argument and an
// iteration count.)
typedef void (*profile_target_t)(void* arg, unsigned long count);
/*
Calls target(arg) repeatedly, adjusting the iteration count based on the
observed running times.
The target function should use clock #0 (i.e. with start_clock() and
stop_clock()) to mark which code should be timed.
Stores minimum/maximum time per iteration (in microseconds) in min and max
(either may be NULL, in which case the value is not stored).
*/
void prof_repeat(double* min, double* max, profile_target_t target, void* arg);
// Timing runs need to last at least this many microseconds to be counted:
#define DURATION_THRESHOLD 200000
// Microseconds per timing run that the prof_repeat function aims for:
#define DURATION_TARGET 300000
#ifdef __cplusplus
}
#endif
#endif // #ifndef FLINT_PROFILER_H
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