mirror of
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Remove nptl/sockperf.c.
This patch removes nptl/sockperf.c, an unused, x86-specific program with a hardcoded path in /tmp. If someone finds some of this code in future for adding a proper benchmark, that does not of course rule out adding it back in that form, but for now I think it's best to eliminate this code with the hardcoded /tmp path. Tested for x86_64. * nptl/sockperf.c: Remove file.
This commit is contained in:
Joseph Myers
parent
92d6aa8528
commit
a833e627c3
@ -1,3 +1,7 @@
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2018-06-27 Joseph Myers <joseph@codesourcery.com>
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* nptl/sockperf.c: Remove file.
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2018-06-27 Florian Weimer <fweimer@redhat.com>
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[BZ #18023]
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593
nptl/sockperf.c
593
nptl/sockperf.c
@ -1,593 +0,0 @@
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#define _GNU_SOURCE
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#include <argp.h>
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#include <complex.h>
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#include <errno.h>
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#include <error.h>
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#include <fcntl.h>
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#include <gd.h>
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#include <inttypes.h>
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#include <pthread.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/param.h>
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#include <sys/poll.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#define size_x 320
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#define size_y 240
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#define PATH "/tmp/s.sockperf"
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struct thread_param
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{
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unsigned int from;
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unsigned int to;
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unsigned int nserv;
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};
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struct coord
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{
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unsigned int x;
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unsigned int y;
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complex double z;
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};
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/* We use 64bit values for the times. */
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typedef unsigned long long int hp_timing_t;
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static unsigned int nclients = 2;
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static unsigned int nservers = 2;
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static bool timing;
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static int points;
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static complex double top_left = -0.7 + 0.2i;
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static complex double bottom_right = -0.5 - 0.0i;
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static int colors[256];
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static gdImagePtr image;
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static pthread_mutex_t image_lock;
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static int sock;
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static void *
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client (void *arg)
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{
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struct thread_param *param = arg;
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unsigned int cnt;
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unsigned int nserv = param->nserv;
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struct pollfd servpoll[nserv];
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struct sockaddr_un servaddr;
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socklen_t servlen;
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struct coord c;
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bool new_coord (void)
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{
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if (cnt >= param->to)
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return false;
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unsigned int row = cnt / size_x;
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unsigned int col = cnt % size_x;
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c.x = col;
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c.y = row;
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c.z = (top_left
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+ ((col
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* (creal (bottom_right) - creal (top_left))) / size_x)
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+ (_Complex_I * (row * (cimag (bottom_right) - cimag (top_left)))
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/ size_y));
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++cnt;
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return true;
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}
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for (cnt = 0; cnt < nserv; ++cnt)
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{
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servpoll[cnt].fd = socket (AF_UNIX, SOCK_STREAM, 0);
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if (servpoll[cnt].fd < 0)
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{
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puts ("cannot create socket in client");
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return NULL;
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}
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memset (&servaddr, '\0', sizeof (servaddr));
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servaddr.sun_family = AF_UNIX;
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strncpy (servaddr.sun_path, PATH, sizeof (servaddr.sun_path));
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servlen = offsetof (struct sockaddr_un, sun_path) + strlen (PATH) + 1;
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int err;
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while (1)
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{
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err = TEMP_FAILURE_RETRY (connect (servpoll[cnt].fd, &servaddr,
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servlen));
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if (err != -1 || errno != ECONNREFUSED)
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break;
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pthread_yield ();
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}
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if (err == -1)
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{
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printf ("cannot connect: %m (%d)\n", errno);
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exit (1);
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}
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servpoll[cnt].events = POLLOUT;
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servpoll[cnt].revents = 0;
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}
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cnt = param->from;
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new_coord ();
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bool z_valid = true;
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while (1)
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{
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int i;
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int n = poll (servpoll, nserv, -1);
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if (n == -1)
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{
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puts ("poll returned error");
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break;
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}
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bool cont = false;
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for (i = 0; i < nserv && n > 0; ++i)
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if (servpoll[i].revents != 0)
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{
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if (servpoll[i].revents == POLLIN)
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{
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unsigned int vals[3];
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if (TEMP_FAILURE_RETRY (read (servpoll[i].fd, &vals,
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sizeof (vals)))
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!= sizeof (vals))
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{
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puts ("read error in client");
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return NULL;
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}
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pthread_mutex_lock (&image_lock);
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gdImageSetPixel (image, vals[0], vals[1], vals[2]);
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++points;
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pthread_mutex_unlock (&image_lock);
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servpoll[i].events = POLLOUT;
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}
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else
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{
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if (servpoll[i].revents != POLLOUT)
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printf ("revents: %hd != POLLOUT ???\n",
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servpoll[i].revents);
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if (z_valid)
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{
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if (TEMP_FAILURE_RETRY (write (servpoll[i].fd, &c,
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sizeof (c))) != sizeof (c))
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{
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puts ("write error in client");
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return NULL;
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}
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cont = true;
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servpoll[i].events = POLLIN;
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z_valid = new_coord ();
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if (! z_valid)
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/* No more to do. Clear the event fields. */
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for (i = 0; i < nserv; ++i)
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if (servpoll[i].events == POLLOUT)
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servpoll[i].events = servpoll[i].revents = 0;
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}
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else
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servpoll[i].events = servpoll[i].revents = 0;
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}
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--n;
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}
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else if (servpoll[i].events != 0)
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cont = true;
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if (! cont && ! z_valid)
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break;
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}
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c.x = 0xffffffff;
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c.y = 0xffffffff;
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for (cnt = 0; cnt < nserv; ++cnt)
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{
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TEMP_FAILURE_RETRY (write (servpoll[cnt].fd, &c, sizeof (c)));
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close (servpoll[cnt].fd);
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}
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return NULL;
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}
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static void *
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server (void *arg)
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{
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struct sockaddr_un cliaddr;
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socklen_t clilen;
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int clisock = TEMP_FAILURE_RETRY (accept (sock, &cliaddr, &clilen));
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if (clisock == -1)
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{
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puts ("accept failed");
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return NULL;
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}
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while (1)
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{
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struct coord c;
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if (TEMP_FAILURE_RETRY (read (clisock, &c, sizeof (c))) != sizeof (c))
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{
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printf ("server read failed: %m (%d)\n", errno);
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break;
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}
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if (c.x == 0xffffffff && c.y == 0xffffffff)
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break;
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unsigned int rnds = 0;
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complex double z = c.z;
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while (cabs (z) < 4.0)
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{
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z = z * z - 1;
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if (++rnds == 255)
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break;
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}
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unsigned int vals[3] = { c.x, c.y, rnds };
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if (TEMP_FAILURE_RETRY (write (clisock, vals, sizeof (vals)))
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!= sizeof (vals))
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{
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puts ("server write error");
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return NULL;
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}
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}
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close (clisock);
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return NULL;
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}
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static const char *outfilename = "test.png";
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static const struct argp_option options[] =
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{
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{ "clients", 'c', "NUMBER", 0, "Number of client threads" },
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{ "servers", 's', "NUMBER", 0, "Number of server threads per client" },
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{ "timing", 'T', NULL, 0,
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"Measure time from startup to the last thread finishing" },
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{ NULL, 0, NULL, 0, NULL }
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};
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/* Prototype for option handler. */
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static error_t parse_opt (int key, char *arg, struct argp_state *state);
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/* Data structure to communicate with argp functions. */
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static struct argp argp =
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{
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options, parse_opt
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};
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int
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main (int argc, char *argv[])
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{
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int cnt;
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FILE *outfile;
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struct sockaddr_un servaddr;
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socklen_t servlen;
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int remaining;
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/* Parse and process arguments. */
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argp_parse (&argp, argc, argv, 0, &remaining, NULL);
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pthread_t servth[nservers * nclients];
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pthread_t clntth[nclients];
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struct thread_param clntparam[nclients];
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image = gdImageCreate (size_x, size_y);
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if (image == NULL)
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{
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puts ("gdImageCreate failed");
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return 1;
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}
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for (cnt = 0; cnt < 255; ++cnt)
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colors[cnt] = gdImageColorAllocate (image, 256 - cnt, 256 - cnt,
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256 - cnt);
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/* Black. */
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colors[cnt] = gdImageColorAllocate (image, 0, 0, 0);
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sock = socket (AF_UNIX, SOCK_STREAM, 0);
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if (sock < 0)
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error (EXIT_FAILURE, errno, "cannot create socket");
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memset (&servaddr, '\0', sizeof (servaddr));
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servaddr.sun_family = AF_UNIX;
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strncpy (servaddr.sun_path, PATH, sizeof (servaddr.sun_path));
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servlen = offsetof (struct sockaddr_un, sun_path) + strlen (PATH) + 1;
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if (bind (sock, &servaddr, servlen) == -1)
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error (EXIT_FAILURE, errno, "bind failed");
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listen (sock, SOMAXCONN);
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pthread_mutex_init (&image_lock, NULL);
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struct sigaction sa;
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sa.sa_handler = SIG_IGN;
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sigemptyset (&sa.sa_mask);
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sa.sa_flags = 0;
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clockid_t cl;
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struct timespec start_time;
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if (timing)
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{
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if (clock_getcpuclockid (0, &cl) != 0
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|| clock_gettime (cl, &start_time) != 0)
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timing = false;
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}
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/* Start the servers. */
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for (cnt = 0; cnt < nservers * nclients; ++cnt)
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{
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if (pthread_create (&servth[cnt], NULL, server, NULL) != 0)
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{
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puts ("pthread_create for server failed");
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exit (1);
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}
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}
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for (cnt = 0; cnt < nclients; ++cnt)
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{
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clntparam[cnt].from = cnt * (size_x * size_y) / nclients;
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clntparam[cnt].to = MIN ((cnt + 1) * (size_x * size_y) / nclients,
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size_x * size_y);
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clntparam[cnt].nserv = nservers;
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if (pthread_create (&clntth[cnt], NULL, client, &clntparam[cnt]) != 0)
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{
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puts ("pthread_create for client failed");
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exit (1);
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}
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}
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/* Wait for the clients. */
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for (cnt = 0; cnt < nclients; ++cnt)
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if (pthread_join (clntth[cnt], NULL) != 0)
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{
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puts ("client pthread_join failed");
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exit (1);
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}
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/* Wait for the servers. */
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for (cnt = 0; cnt < nclients * nservers; ++cnt)
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if (pthread_join (servth[cnt], NULL) != 0)
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{
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puts ("server pthread_join failed");
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exit (1);
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}
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if (timing)
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{
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struct timespec end_time;
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if (clock_gettime (cl, &end_time) == 0)
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{
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end_time.tv_sec -= start_time.tv_sec;
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end_time.tv_nsec -= start_time.tv_nsec;
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if (end_time.tv_nsec < 0)
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{
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end_time.tv_nsec += 1000000000;
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--end_time.tv_sec;
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}
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printf ("\nRuntime: %lu.%09lu seconds\n%d points computed\n",
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(unsigned long int) end_time.tv_sec,
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(unsigned long int) end_time.tv_nsec,
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points);
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}
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}
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outfile = fopen (outfilename, "w");
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if (outfile == NULL)
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error (EXIT_FAILURE, errno, "cannot open output file '%s'", outfilename);
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gdImagePng (image, outfile);
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fclose (outfile);
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unlink (PATH);
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return 0;
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}
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/* Handle program arguments. */
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static error_t
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parse_opt (int key, char *arg, struct argp_state *state)
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{
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switch (key)
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{
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case 'c':
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nclients = strtoul (arg, NULL, 0);
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break;
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case 's':
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nservers = strtoul (arg, NULL, 0);
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break;
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case 'T':
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timing = true;
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break;
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default:
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return ARGP_ERR_UNKNOWN;
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}
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return 0;
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}
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static hp_timing_t
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get_clockfreq (void)
|
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{
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/* We read the information from the /proc filesystem. It contains at
|
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least one line like
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cpu MHz : 497.840237
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or also
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cpu MHz : 497.841
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We search for this line and convert the number in an integer. */
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static hp_timing_t result;
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int fd;
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/* If this function was called before, we know the result. */
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if (result != 0)
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return result;
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fd = open ("/proc/cpuinfo", O_RDONLY);
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if (__glibc_likely (fd != -1))
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{
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/* XXX AFAIK the /proc filesystem can generate "files" only up
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to a size of 4096 bytes. */
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char buf[4096];
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ssize_t n;
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n = read (fd, buf, sizeof buf);
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if (__builtin_expect (n, 1) > 0)
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{
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char *mhz = memmem (buf, n, "cpu MHz", 7);
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if (__glibc_likely (mhz != NULL))
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{
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char *endp = buf + n;
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int seen_decpoint = 0;
|
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int ndigits = 0;
|
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|
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/* Search for the beginning of the string. */
|
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while (mhz < endp && (*mhz < '0' || *mhz > '9') && *mhz != '\n')
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++mhz;
|
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|
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while (mhz < endp && *mhz != '\n')
|
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{
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if (*mhz >= '0' && *mhz <= '9')
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{
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result *= 10;
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result += *mhz - '0';
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if (seen_decpoint)
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++ndigits;
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}
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else if (*mhz == '.')
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seen_decpoint = 1;
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++mhz;
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}
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|
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/* Compensate for missing digits at the end. */
|
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while (ndigits++ < 6)
|
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result *= 10;
|
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}
|
||||
}
|
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|
||||
close (fd);
|
||||
}
|
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|
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return result;
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}
|
||||
|
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|
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int
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clock_getcpuclockid (pid_t pid, clockid_t *clock_id)
|
||||
{
|
||||
/* We don't allow any process ID but our own. */
|
||||
if (pid != 0 && pid != getpid ())
|
||||
return EPERM;
|
||||
|
||||
#ifdef CLOCK_PROCESS_CPUTIME_ID
|
||||
/* Store the number. */
|
||||
*clock_id = CLOCK_PROCESS_CPUTIME_ID;
|
||||
|
||||
return 0;
|
||||
#else
|
||||
/* We don't have a timer for that. */
|
||||
return ENOENT;
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
#define HP_TIMING_NOW(Var) __asm__ __volatile__ ("rdtsc" : "=A" (Var))
|
||||
|
||||
/* Get current value of CLOCK and store it in TP. */
|
||||
int
|
||||
clock_gettime (clockid_t clock_id, struct timespec *tp)
|
||||
{
|
||||
int retval = -1;
|
||||
|
||||
switch (clock_id)
|
||||
{
|
||||
case CLOCK_PROCESS_CPUTIME_ID:
|
||||
{
|
||||
|
||||
static hp_timing_t freq;
|
||||
hp_timing_t tsc;
|
||||
|
||||
/* Get the current counter. */
|
||||
HP_TIMING_NOW (tsc);
|
||||
|
||||
if (freq == 0)
|
||||
{
|
||||
freq = get_clockfreq ();
|
||||
if (freq == 0)
|
||||
return EINVAL;
|
||||
}
|
||||
|
||||
/* Compute the seconds. */
|
||||
tp->tv_sec = tsc / freq;
|
||||
|
||||
/* And the nanoseconds. This computation should be stable until
|
||||
we get machines with about 16GHz frequency. */
|
||||
tp->tv_nsec = ((tsc % freq) * UINT64_C (1000000000)) / freq;
|
||||
|
||||
retval = 0;
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
errno = EINVAL;
|
||||
break;
|
||||
}
|
||||
|
||||
return retval;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user