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/*
* Copyright (C) 2000-2008 the xine project
*
* This file is part of xine, a free video player.
*
* xine 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.
*
* xine 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* debug print and profiling functions - implementation
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <sys/time.h>
#include <xine/xineutils.h>
#define MAX_ID 10
#ifndef NDEBUG
typedef struct {
uint64_t p_times;
uint64_t p_start;
long p_calls;
const char *p_label;
} xine_profiler_t;
static xine_profiler_t profiler[MAX_ID];
void xine_profiler_init () {
memset(profiler, 0, sizeof(profiler));
}
int xine_profiler_allocate_slot (const char *label) {
int id;
for (id = 0; id < MAX_ID && profiler[id].p_label != NULL; id++)
;
if (id >= MAX_ID)
return -1;
profiler[id].p_label = label;
return id;
}
#if defined(ARCH_X86_32)
static __inline__ uint64_t rdtsc(void)
{
unsigned long long int x;
__asm__ volatile ("rdtsc\n\t" : "=A" (x));
return x;
}
#elif defined(ARCH_X86_64)
static __inline__ uint64_t rdtsc(void)
{
unsigned long long int a, d;
__asm__ volatile ("rdtsc\n\t" : "=a" (a), "=d" (d));
return (d << 32) | (a & 0xffffffff);
}
#endif
void xine_profiler_start_count (int id) {
if ( id >= MAX_ID || id < 0 ) return;
#if defined(ARCH_X86) || defined(ARCH_X86_64)
profiler[id].p_start = rdtsc();
#endif
}
void xine_profiler_stop_count (int id) {
if ( id >= MAX_ID || id < 0 ) return;
#if defined(ARCH_X86) || defined(ARCH_X86_64)
profiler[id].p_times += rdtsc() - profiler[id].p_start;
#endif
profiler[id].p_calls++;
}
void xine_profiler_print_results (void) {
int i;
#if defined(ARCH_X86) || defined(ARCH_X86_64)
static uint64_t cpu_speed; /* cpu cyles/usec */
if (!cpu_speed) {
uint64_t tsc_start, tsc_end;
struct timeval tv_start, tv_end;
tsc_start = rdtsc();
gettimeofday(&tv_start, NULL);
xine_usec_sleep(100000);
tsc_end = rdtsc();
gettimeofday(&tv_end, NULL);
cpu_speed = (tsc_end - tsc_start) /
((tv_end.tv_sec - tv_start.tv_sec) * 1e6 +
tv_end.tv_usec - tv_start.tv_usec);
}
#endif
printf ("\n\nPerformance analysis:\n\n"
"%-3s %-24.24s %12s %9s %12s %9s\n"
"----------------------------------------------------------------------------\n",
"ID", "name", "cpu cycles", "calls", "cycles/call", "usec/call");
for (i=0; i<MAX_ID; i++) {
if (profiler[i].p_label) {
printf ("%2d: %-24.24s %12lld %9ld",
i, profiler[i].p_label, profiler[i].p_times, profiler[i].p_calls);
if (profiler[i].p_calls) {
printf(" %12lld", profiler[i].p_times / profiler[i].p_calls);
#if defined(ARCH_X86) || defined(ARCH_X86_64)
printf(" %9lld", profiler[i].p_times / (cpu_speed * profiler[i].p_calls));
#endif
}
printf ("\n");
}
}
}
#else /* DEBUG */
#define NO_PROFILER_MSG {printf("xine's profiler is unavailable.\n");}
/* Dummies */
void xine_profiler_init (void) {
NO_PROFILER_MSG
}
int xine_profiler_allocate_slot (const char *label) {
return -1;
}
void xine_profiler_start_count (int id) {
}
void xine_profiler_stop_count (int id) {
}
void xine_profiler_print_results (void) {
NO_PROFILER_MSG
}
#endif
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