[Ltp-cvs] ltp/testcases/realtime/stress/pi-tests GNUmakefile.am, NONE, 1.1 GNUmakefile.in, NONE, 1.1 lookup_pi_state.c, NONE, 1.1 testpi-3.c, NONE, 1.1

[Subrata <sub...@us...>]

Update of /cvsroot/ltp/ltp/testcases/realtime/stress/pi-tests
In directory sc8-pr-cvs6.sourceforge.net:/tmp/cvs-serv18188/ltp/testcases/realtime/stress/pi-tests

Added Files:
	GNUmakefile.am GNUmakefile.in lookup_pi_state.c testpi-3.c 
Log Message:
Initial Set of Real Time Linux Test Cases, by Nivedita Singhvi <ni...@us...> & sudhanshu Singh <sud...@in...>


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--- NEW FILE: testpi-3.c ---
/******************************************************************************
 *
 *   Copyright  International Business Machines  Corp., 2007
 *
 *   This program 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.
 *
 *   This program 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * NAME
 *      testpi-3.c
 *
 * DESCRIPTION
 *
 *
 * USAGE:
 *      Use run_auto.sh script in current directory to build and run test.
 *      Use "-j" to enable jvm simulator.
 *
 *      Compilation: gcc -O2 -g -D_GNU_SOURCE -I/usr/include/nptl -I ../../include
 *      -L/usr/lib/nptl -lpthread -lrt -lm testpi-3.c -o testpi-3
 *
 * AUTHOR
 *
 *
 * HISTORY
 *
 *
 *****************************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sched.h>
#include <pthread.h>
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
#include <librttest.h>
#include <libjvmsim.h>

static int run_jvmsim=0;

void usage(void)
{
        rt_help();
        printf("testpi-3 specific options:\n");
        printf("  -j            enable jvmsim\n");
}

int parse_args(int c, char *v)
{

        int handled = 1;
        switch (c) {
                case 'j':
                        run_jvmsim = 1;
                        break;
                case 'h':
                        usage();
                        exit(0);
                default:
                        handled = 0;
                        break;
        }
        return handled;
}

int gettid(void)
{
        return syscall(__NR_gettid);
}


typedef void* (*entrypoint_t)(void*);

#define THREAD_STOP    1

pthread_mutex_t glob_mutex;

/*typedef struct thread {
  int priority;
  int policy;
  entrypoint_t func;
  pthread_attr_t attr;
  pthread_t handle;
  pthread_mutex_t mutex;
  pthread_cond_t cond;
  int flags;
  int count;
} Thread;*/

typedef struct thread Thread;

Thread arg1, arg2, arg3, arg4, arg5;

int strartThread(Thread* thr);
void stopThread(Thread* thr);
void joinThread(Thread* thr);

void* func_nonrt(void* arg)
{
  Thread* pthr = (Thread*)arg;
  int rc, i, j, policy, tid = gettid();
  struct sched_param schedp;
  cpu_set_t mask;
  CPU_ZERO(&mask);
  CPU_SET(0, &mask);

  rc = sched_setaffinity(0, sizeof(mask), &mask);
  if (rc < 0) {
     printf("Thread %d: Can't set affinity: %d %s\n", tid, rc, strerror(rc));
     exit(-1);
  }
  rc = sched_getaffinity(0, sizeof(mask), &mask);

  printf("Thread started %d on CPU %ld\n", pthr->priority, (long)mask.__bits[0]);
  pthread_getschedparam(pthr->pthread, &policy, &schedp);
  printf("Thread running %d\n", pthr->priority);

  while (1) {
    pthread_mutex_lock(&glob_mutex);
    printf("Thread %d at start pthread pol %d pri %d - Got global lock\n", pthr->priority,
	   policy, schedp.sched_priority);
    sleep(2);
    for (i=0;i<10000;i++) {
      if (i%100 == 0) {
        sched_getparam(tid, &schedp);
        policy = sched_getscheduler(tid);
        printf("Thread %d(%d) loop %d pthread pol %d pri %d\n", tid, pthr->priority, i,
  	   policy, schedp.sched_priority);
        fflush(NULL);
      }
      pthr->id++;
      for (j=0;j<5000;j++) {
        pthread_mutex_lock(&(pthr->mutex));
        pthread_mutex_unlock(&(pthr->mutex));
      }
    }
    pthread_mutex_unlock(&glob_mutex);
    pthread_yield();
  }
  return NULL;
}

void* func_rt(void* arg)
{
  Thread* pthr = (Thread*)arg;
  int rc, i, j, policy, tid = gettid();
  struct sched_param schedp;
  cpu_set_t mask;
  CPU_ZERO(&mask);
  CPU_SET(0, &mask);

  rc = sched_setaffinity(0, sizeof(mask), &mask);
  if (rc < 0) {
     printf("Thread %d: Can't set affinity: %d %s\n", tid, rc, strerror(rc));
     exit(-1);
  }
  rc = sched_getaffinity(0, sizeof(mask), &mask);

  printf("Thread started %d on CPU %ld\n", pthr->priority, (long)mask.__bits[0]);
  pthread_getschedparam(pthr->pthread, &policy, &schedp);

  while (1) {
    sleep(2);
    printf("Thread running %d\n", pthr->priority);
    pthread_mutex_lock(&glob_mutex);
    printf("Thread %d at start pthread pol %d pri %d - Got global lock\n", pthr->priority,
  	   policy, schedp.sched_priority);

    /* we just use the mutex as something to slow things down */
    /* say who we are and then do nothing for a while.  The aim
     * of this is to show that high priority threads make more
     * progress than lower priority threads..
     */
    for (i=0;i<1000;i++) {
      if (i%100 == 0) {
        sched_getparam(tid, &schedp);
        policy = sched_getscheduler(tid);
        printf("Thread %d(%d) loop %d pthread pol %d pri %d\n", tid, pthr->priority, i,
  	   policy, schedp.sched_priority);
        fflush(NULL);
      }
      pthr->id++;
      for (j=0;j<5000;j++) {
        pthread_mutex_lock(&(pthr->mutex));
        pthread_mutex_unlock(&(pthr->mutex));
      }
    }
    pthread_mutex_unlock(&glob_mutex);
    sleep(2);
  }
  return NULL;
}

void* func_noise(void* arg)
{
  Thread* pthr = (Thread*)arg;
  int rc, i, j, policy, tid = gettid();
  struct sched_param schedp;
  cpu_set_t mask;
  CPU_ZERO(&mask);
  CPU_SET(0, &mask);

  rc = sched_setaffinity(0, sizeof(mask), &mask);
  if (rc < 0) {
     printf("Thread %d: Can't set affinity: %d %s\n", tid, rc, strerror(rc));
     exit(-1);
  }
  rc = sched_getaffinity(0, sizeof(mask), &mask);

  printf("Noise Thread started %d on CPU %ld\n", pthr->priority, (long)mask.__bits[0]);
  pthread_getschedparam(pthr->pthread, &policy, &schedp);

  while (1) {
    sleep(1);
    printf("Noise Thread running %d\n", pthr->priority);

    for (i=0;i<10000;i++) {
      if (i%100 == 0) {
        sched_getparam(tid, &schedp);
        policy = sched_getscheduler(tid);
        printf("Noise Thread %d(%d) loop %d pthread pol %d pri %d\n", tid, pthr->priority, i,
  	   policy, schedp.sched_priority);
        fflush(NULL);
      }
      pthr->id++;
      for (j=0;j<5000;j++) {
        pthread_mutex_lock(&(pthr->mutex));
        pthread_mutex_unlock(&(pthr->mutex));
      }
    }
    pthread_yield();
  }
  return NULL;
}

int startThread(Thread* thrd)
{
  struct sched_param schedp;
  pthread_condattr_t condattr;
  int retc, policy, inherit;

  printf("Start thread priority %d\n", thrd->priority);
  if (pthread_attr_init(&(thrd->attr)) != 0) {
    printf("Attr init failed");
    exit(2);
  }
  thrd->flags = 0;
  memset(&schedp, 0, sizeof(schedp));
  schedp.sched_priority = thrd->priority;
  policy = thrd->policy;

  if (pthread_attr_setschedpolicy(&(thrd->attr), policy) != 0) {
    printf("Can't set policy %d\n", policy);
  }
  if (pthread_attr_getschedpolicy(&(thrd->attr), &policy) != 0) {
    printf("Can't get policy\n");
  } else {
    printf("Policy in attribs is %d\n", policy);
  }
  if (pthread_attr_setschedparam(&(thrd->attr), &schedp) != 0) {
    printf("Can't set params");
  }
  if (pthread_attr_getschedparam(&(thrd->attr), &schedp) != 0) {
    printf("Can't get params");
  } else {
    printf("Priority in attribs is %d\n", schedp.sched_priority);
  }
  if (pthread_attr_setinheritsched(&(thrd->attr), PTHREAD_EXPLICIT_SCHED) != 0) {
    printf("Can't set inheritsched\n");
  }
  if (pthread_attr_getinheritsched(&(thrd->attr), &inherit) != 0) {
    printf("Can't get inheritsched\n");
  } else {
    printf("inherit sched in attribs is %d\n", inherit);
  }
  if ((retc = pthread_mutex_init(&(thrd->mutex), NULL)) != 0) {
    printf("Failed to init mutex: %d\n", retc);
  }
  if (pthread_condattr_init(&condattr) != 0) {
    printf("Failed to init condattr\n");
  }
  if (pthread_cond_init(&(thrd->cond), &condattr) != 0) {
    printf("Failed to init cond\n");
  }
  retc = pthread_create(&(thrd->pthread),&(thrd->attr), thrd->func, thrd);
  printf("Create returns %d\n\n", retc);
  return retc;
}

void stopThread(Thread* thr)
{
  thr->flags += THREAD_STOP;
  joinThread(thr);
}

void joinThread(Thread* thr)
{
  void* ret = NULL;
  if (pthread_join(thr->pthread, &ret) != 0) {
    printf("Join failed\n");
  }
  printf("Join gave %p\n", ret);
}

/*
 * Test pthread creation at different thread priorities.
 */
int main(int argc, char* argv[]) {
  pthread_mutexattr_t mutexattr;
  int i, retc, protocol, nopi = 0;
  cpu_set_t mask;
  CPU_ZERO(&mask);
  CPU_SET(0, &mask);
  setup();

  rt_init("jh",parse_args,argc,argv);

  if (run_jvmsim) {
                printf("jvmsim enabled\n");
                jvmsim_init();  // Start the JVM simulation
  } else {
                printf("jvmsim disabled\n");
  }

  retc = sched_setaffinity(0, sizeof(mask), &mask);
  if (retc < 0) {
     printf("Main Thread: Can't set affinity: %d %s\n", retc, strerror(retc));
     exit(-1);
  }
  retc = sched_getaffinity(0, sizeof(mask), &mask);

  arg1.policy = SCHED_OTHER; arg1.priority = 0;  arg1.func = func_nonrt;
  arg2.policy = SCHED_RR;    arg2.priority = 20; arg2.func = func_rt;
  arg3.policy = SCHED_RR;    arg3.priority = 30; arg3.func = func_rt;
  arg4.policy = SCHED_RR;    arg4.priority = 40; arg4.func = func_rt;
  arg5.policy = SCHED_RR;    arg5.priority = 40; arg5.func = func_noise;

  for (i=0;i<argc;i++) {
    if (strcmp(argv[i],"nopi") == 0) nopi = 1;
  }

  printf("Start %s\n",argv[0]);

  if (!nopi) {
    if (pthread_mutexattr_init(&mutexattr) != 0) {
      printf("Failed to init mutexattr\n");
    };
    if (pthread_mutexattr_setprotocol(&mutexattr, PTHREAD_PRIO_INHERIT) != 0) {
      printf("Can't set protocol prio inherit\n");
    }
    if (pthread_mutexattr_getprotocol(&mutexattr, &protocol) != 0) {
      printf("Can't get mutexattr protocol\n");
    } else {
      printf("protocol in mutexattr is %d\n", protocol);
    }
    if ((retc = pthread_mutex_init(&glob_mutex, &mutexattr)) != 0) {
      printf("Failed to init mutex: %d\n", retc);
    }
  }

  startThread(&arg1);
  startThread(&arg2);
  startThread(&arg3);
  startThread(&arg4);
  startThread(&arg5);

  sleep(10);

  printf("Stopping threads\n");
  stopThread(&arg1);
  stopThread(&arg2);
  stopThread(&arg3);
  stopThread(&arg4);
  stopThread(&arg5);

  printf("Thread counts %d %d %d %d %d\n",arg1.id, arg2.id,
	 arg3.id, arg4.id, arg5.id);
  printf("Done\n");

  return 0;
}

--- NEW FILE: GNUmakefile.am ---
bin_PROGRAMS = \
	testpi-3 \
	lookup_pi_state

AM_CPPFLAGS = \
	-I$(top_srcdir)/include \
	-I$(top_builddir)/include \
	-I$(DESTDIR)/usr/include/nptl \
	-D_GNU_SOURCE

AM_CFLAGS = \
	-O2

LDADD = \
	$(top_builddir)/lib/libjvmsim.a \
	$(top_builddir)/lib/librttest.a \
	$(top_builddir)/lib/libstats.a \
	-lpthread -lrt -lm

MAINTAINERCLEANFILES = \
	GNUmakefile.in


--- NEW FILE: lookup_pi_state.c ---
/******************************************************************************
 *
 *   Copyright  International Business Machines  Corp., 2007
 *
 *   This program 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.
 *
 *   This program 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * NAME
 *      lookup_pi_state.c
 *
 * DESCRIPTION
 *       A test to reproduce a bug in lookup_pi_state()
 *
 * USAGE:
 *      Use run_auto.sh script in current directory to build and run test.
 *      Use "-j" to enable jvm simulator.
 *
 *      Compilation: gcc -O2 -g -D_GNU_SOURCE -I/usr/include/nptl -I ../../include
 *      -L/usr/lib/nptl -lpthread -lrt -lm lookup_pi_state.c -o lookup_pi_state
 *
 * AUTHOR
 *      Darren Hart <dv...@us...>
 *
 * HISTORY
 *      2006-May-18:       Initial version by Darren Hart <dv...@us...>
 *
 *****************************************************************************/

#include <stdio.h>
#include <librttest.h>
#include <libjvmsim.h>

#define NUM_SLAVES 20
#define SLAVE_PRIO 89

int enable_jvmsim = 0;

pthread_mutex_t MM;
pthread_mutex_t MS;
pthread_mutex_t MT;
pthread_cond_t CM;
pthread_cond_t CS;
pthread_cond_t CT;

atomic_t slave_order_a = {0};
atomic_t slave_order_b = {0};
atomic_t slave_order_c = {0};

static int run_jvmsim=0;

void usage(void)
{
        rt_help();
        printf("lookup_pi_state specific options:\n");
        printf("  -j            enable jvmsim\n");
}

int parse_args(int c, char *v)
{

        int handled = 1;
        switch (c) {
                case 'j':
                        run_jvmsim = 1;
                        break;
                case 'h':
                        usage();
                        exit(0);
                default:
                        handled = 0;
                        break;
        }
        return handled;
}

void *slave_thread(void* arg)
{
	struct thread *t = (struct thread *)arg;
	int id = (intptr_t)t->arg;
// 3
	pthread_mutex_lock(&MS);
// 4,5
	if (atomic_inc(&slave_order_a) == NUM_SLAVES) {
		printf("Slave thread %d notifying master\n", id);
		pthread_mutex_lock(&MM); // make sure the master thread is waiting
		pthread_cond_signal(&CM);
		pthread_mutex_unlock(&MM);
	}
	printf("Slave thread %d waiting on CS,MS\n", id);
	pthread_cond_wait(&CS, &MS); // docs are contradictory on if this
                                     // should be MS or MM

	if (atomic_inc(&slave_order_b) <= 6) {
// 10,11
		// do nothing, just terminate
	} else {
// 12
		pthread_cond_wait(&CS, &MS);
// 17
	}
	pthread_mutex_unlock(&MS);
	atomic_inc(&slave_order_c);
	printf("Slave thread %d terminating\n", id);
	return NULL;
}

void *master_thread(void* arg)
{
	int i;
	struct timespec ts_abs_timeout;
	struct thread *t = (struct thread *)arg;
// 1
	pthread_mutex_lock(&MM);
	for (i = 0; i < NUM_SLAVES; i++) {
		create_fifo_thread(slave_thread, (void *)(intptr_t)i, SLAVE_PRIO);
	}
// 2
	printf("Master waiting till slaves wait()\n");
	pthread_cond_wait(&CM, &MM);
	printf("Master awoken\n");
// 6
	pthread_mutex_lock(&MS);
// 7
	printf("Master doing 3 signals\n");
	pthread_cond_signal(&CS);
	pthread_cond_signal(&CS);
	pthread_cond_signal(&CS);
// 8
	printf("Master doing 3 broadcasts\n");
	pthread_cond_broadcast(&CS);
	pthread_cond_broadcast(&CS);
	pthread_cond_broadcast(&CS);

	pthread_mutex_unlock(&MS); // if we should timedwait on MS, then we don't
                                   // need to unlock it here
// 9
	printf("Master waiting 10 seconds\n");
	clock_gettime(CLOCK_REALTIME, &ts_abs_timeout);
	ts_abs_timeout.tv_sec += 10;
	pthread_cond_timedwait(&CM, &MM, &ts_abs_timeout); // docs say CS and MS, but
                                                           // that doesn't seem correct
// 13
	pthread_mutex_unlock(&MM);
// 14
	printf("Master doing notify of all remaining slaves\n");
	pthread_mutex_lock(&MS);
	pthread_cond_broadcast(&CS);
// 15
	pthread_mutex_unlock(&MS); // docs say MM, but that doesn't make sense...
// 16
	pthread_mutex_lock(&MT);
	clock_gettime(CLOCK_REALTIME, &ts_abs_timeout);
	ts_abs_timeout.tv_sec += 2;
	pthread_cond_timedwait(&CT, &MT, &ts_abs_timeout);
// 18
	while (!thread_quit(t))
		usleep(10);

	printf("All slaves have terminated\n");

	return NULL;
}

int main(int argc, char *argv[])
{
	init_pi_mutex(&MM);
	init_pi_mutex(&MS);
	init_pi_mutex(&MT);
	setup();

	pthread_cond_init(&CM, NULL);
	pthread_cond_init(&CS, NULL);
	pthread_cond_init(&CT, NULL);

	rt_init("jh", parse_args, argc, argv);

	// -j to enable jvmsim
	if (run_jvmsim) {
		printf("jvmsim Enabled\n");
		jvmsim_init();
	} else {
		printf("jvmsim disabled \n");
	}

	create_other_thread(master_thread, (void *)0);

	// wait for the slaves to quit
	while (atomic_get(&slave_order_c) < NUM_SLAVES)
		usleep(10);

	join_threads();

	return 0;
}