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/*
* Copyright © 2007,2009 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* Eric Anholt <eric@anholt.net>
* Chris Wilson <chris@chris-wilson.co.uk>
*
*/
#include <unistd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include "intel_io.h"
#include "intel_chipset.h"
#include "intel_reg.h"
#define SAMPLES_PER_SEC 10000
static volatile int goddo;
static pid_t spawn(char **argv)
{
pid_t pid;
pid = fork();
if (pid != 0)
return pid;
execvp(argv[0], argv);
exit(1);
}
static void sighandler(int sig)
{
goddo = sig;
}
int main(int argc, char **argv)
{
pid_t child;
uint64_t ring_idle = 0, ring_time = 0;
struct timeval start, end;
static struct rusage rusage;
int status;
intel_get_mmio(intel_get_pci_device());
if (argc == 1) {
fprintf(stderr, "usage: %s cmd [args...]\n", argv[0]);
return 1;
}
signal(SIGCHLD, sighandler);
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_IGN);
gettimeofday(&start, NULL);
child = spawn(argv+1);
if (child < 0)
return 127;
while (!goddo) {
uint32_t ring_head, ring_tail;
ring_head = INREG(LP_RING + RING_HEAD) & HEAD_ADDR;
ring_tail = INREG(LP_RING + RING_TAIL) & TAIL_ADDR;
if (ring_tail == ring_head)
ring_idle++;
ring_time++;
usleep(1000000 / SAMPLES_PER_SEC);
}
gettimeofday(&end, NULL);
timersub(&end, &start, &end);
waitpid(child, &status, 0);
getrusage(RUSAGE_CHILDREN, &rusage);
printf("user: %ld.%06lds, sys: %ld.%06lds, elapsed: %ld.%06lds, CPU: %.1f%%, GPU: %.1f%%\n",
rusage.ru_utime.tv_sec, rusage.ru_utime.tv_usec,
rusage.ru_stime.tv_sec, rusage.ru_stime.tv_usec,
end.tv_sec, end.tv_usec,
100*(rusage.ru_utime.tv_sec + 1e-6*rusage.ru_utime.tv_usec + rusage.ru_stime.tv_sec + 1e-6*rusage.ru_stime.tv_usec) / (end.tv_sec + 1e-6*end.tv_usec),
100 - ring_idle * 100. / ring_time);
return WEXITSTATUS(status);
}
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