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/* (C) 2006 Hewlett-Packard Development Company, L.P. */
/* Huschaam Hussain, TSG Solution Alliances Engineering, SAP Technology Group */
/* eMail: Huschaam.Hussain@hp.com */
#include <errno.h>
#include <libgen.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/shm.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <uuid/uuid.h>
#define LOG(level,args) if (logging >= level) { fprintf args; }
char *program;
pid_t pid;
int processes = 4;
int threads = 4;
int objects = 4096;
int logging = 0;
int help = 0;
struct threadentry {
pthread_t thread;
pthread_attr_t thread_attr;
long arg; /* index in object[] */
long value; /* thread retval */
};
typedef struct threadentry thread_t;
struct processentry {
pid_t pid;
int status;
};
typedef struct processentry process_t;
struct objectentry {
uuid_t uuid;
pid_t pid;
pthread_t tid;
int pos;
};
typedef struct objectentry object_t;
int objectid;
object_t *object;
void
error(int line, char *text)
{
LOG(0,
(stderr, "%s %d: line %d: %s: errno %d: %s\n", program, pid, line,
text, errno, strerror(errno)));
exit(errno);
} /* of error */
void
uuid_error(int line, char *text, int status)
{
LOG(0,
(stderr, "%s %d: line %d: %s: status %d\n", program, pid, line,
text, status));
exit(1);
} /* of uuid error */
void
pthread_error(int line, char *text, int value)
{
LOG(0,
(stderr, "%s %d: line %d: %s: errno %d: %s\n", program, pid, line,
text, value, strerror(value)));
exit(value);
} /* of pthread error */
void
read_arguments(int argc, char *argv[])
{
int status, i;
unsigned long parameter;
status = 0;
while (!status && ((i = getopt(argc, argv, "p:t:o:l:h")) != -1)) {
switch (i) {
case 'p':
processes = strtol(optarg, (char **)NULL, 10);
status = errno != 0 || processes < 1
|| processes > 1024;
if (status)
LOG(0,
(stderr,
"error: bad value for <number of processes>\n"));
break;
case 't':
threads = strtol(optarg, (char **)NULL, 10);
status = errno != 0 || threads < 1 || threads > 8192;
if (status)
LOG(0,
(stderr,
"error: bad value for <number of threads>\n"));
break;
case 'o':
objects = strtol(optarg, (char **)NULL, 10);
status = errno != 0 || objects < 1 || objects > 1048576;
if (status)
LOG(0,
(stderr,
"error: bad value for <number of objects>\n"));
break;
case 'l':
logging = strtol(optarg, (char **)NULL, 10);
if (errno != 0 || logging < 0 || logging > 3) {
status = 1;
fprintf(stderr,
"error: bad value for <logging level>\n");
} /* of if */
break;
case 'h':
help = 1;
break;
default:
status = 1;
} /* of switch */
} /* of while */
if (optind != argc)
status = 1;
if (status != 0 || help != 0) {
LOG(0, (stderr, "usage: %s [options]\n", program));
LOG(0,
(stderr,
" -p <number of processes> [1-1024] default:%d\n",
processes));
LOG(0,
(stderr,
" -t <number of threads> [1-8192] default:%d\n",
threads));
LOG(0,
(stderr,
" -o <number of objects> [1-1048576] default:%d\n",
objects));
LOG(0,
(stderr, " -l <logging level> [0|1|2|3] default:%d\n",
logging));
LOG(0, (stderr, " -h display help\n"));
exit(status);
} /* of if */
LOG(1, (stderr, "%s %d: processes=%d\n", program, pid, processes));
LOG(1, (stderr, "%s %d: threads=%d\n", program, pid, threads));
LOG(1, (stderr, "%s %d: objects=%d\n", program, pid, objects));
LOG(1, (stderr, "%s %d: logging=%d\n", program, pid, logging));
LOG(1, (stderr, "%s %d: help=%d\n", program, pid, help));
} /* of read arguments */
void
allocate_segment(int *id, void **address, size_t number, size_t size)
{
*id = shmget(IPC_PRIVATE, number * size, IPC_CREAT | 0600);
if (*id == -1)
error(__LINE__ - 2, "shmget()");
*address = shmat(*id, NULL, 0);
if (*address == (void *)-1)
error(__LINE__ - 2, "shmat()");
LOG(2,
(stderr,
"%s %d: allocate shared memory segment [id=%d,address=0x%p]\n",
program, pid, *id, *address));
} /* of allocate segment */
void
remove_segment(int id, void *address)
{
if (shmdt(address) == -1)
error(__LINE__ - 1, "shmdt()");
if (shmctl(id, IPC_RMID, NULL) == -1)
error(__LINE__ - 1, "shmctl()");
LOG(2,
(stderr,
"%s %d: remove shared memory segment [id=%d,address=0x%p]\n",
program, pid, id, address));
} /* of remove segment */
void
object_uuid_create(object_t * object)
{
uuid_generate_time(object->uuid);
} /* of object uuid create */
void
object_uuid_to_string(object_t * object, unsigned char **string_uuid)
{
uuid_unparse(object->uuid, *string_uuid);
} /* of object uuid to string */
int
object_uuid_compare(const void *object1, const void *object2)
{
uuid_t *uuid1, *uuid2;
int result;
uuid1 = &((object_t *) object1)->uuid;
uuid2 = &((object_t *) object2)->uuid;
result = uuid_compare(*uuid1, *uuid2);
return (result);
} /* of object uuid compare */
void *
create_uuids(void *p)
{
long index, i;
index = *((long *)p);
for (i = index; i < index + objects; i++) {
object_uuid_create(&object[i]);
object[i].pid = pid;
object[i].tid = pthread_self();
object[i].pos = i - index;
} /* of for */
return (0);
} /* of create uuids */
void
create_threads(int index)
{
thread_t *thread;
int i, result;
pid = getpid();
thread = (thread_t *) calloc(threads, sizeof(thread_t));
if (thread == NULL)
error(__LINE__ - 2, "calloc");
for (i = 0; i < threads; i++) {
result = pthread_attr_init(&thread[i].thread_attr);
if (result != 0)
pthread_error(__LINE__, "pthread_attr_init", result);
thread[i].arg = index;
result =
pthread_create(&thread[i].thread, &thread[i].thread_attr,
&create_uuids, &thread[i].arg);
if (result != 0)
pthread_error(__LINE__, "pthread_create", result);
LOG(2,
(stderr, "%s %d: started thread [tid=%d,arg=%d]\n", program,
pid, thread[i].thread, thread[i].arg));
index = index + objects;
} /* of for */
for (i = 0; i < threads; i++) {
result =
pthread_join(thread[i].thread, (void *)&thread[i].value);
if (result != 0)
pthread_error(__LINE__, "pthread_join", result);
LOG(2,
(stderr, "%s %d: thread exited [tid=%d,value=%d]\n",
program, pid, thread[i].thread, thread[i].value));
} /* of for */
free(thread);
} /* of create threads */
void
create_processes()
{
process_t *process;
int i;
process = (process_t *) calloc(processes, sizeof(process_t));
if (process == NULL)
error(__LINE__ - 2, "calloc");
for (i = 0; i < processes; i++) {
process[i].pid = fork();
switch (process[i].pid) {
case -1:
error(__LINE__ - 3, "fork()");
break;
case 0:
create_threads(i * threads * objects);
exit(0);
break;
default:
LOG(2,
(stderr, "%s %d: started process [pid=%d]\n",
program, pid, process[i].pid));
break;
} /* of switch */
} /* of for */
for (i = 0; i < processes; i++) {
if (waitpid(process[i].pid, &process[i].status, 0) ==
(pid_t) - 1)
error(__LINE__ - 1, "waitpid()");
LOG(2,
(stderr, "%s %d: process exited [pid=%d,status=%d]\n",
program, pid, process[i].pid, process[i].status));
} /* of for */
free(process);
} /* of create processes */
void
object_dump(int i)
{
unsigned char uuid_string[37], *p;
p = uuid_string;
object_uuid_to_string(&object[i], &p);
LOG(0,
(stderr, "%s %d: object[%d]=[uuid=<%s>,pid=%d,tid=%d,pos=%d]\n",
program, pid, i, p, object[i].pid, object[i].tid, object[i].pos));
} /* of object dump */
int
main(int argc, char *argv[])
{
int i, count;
errno = 0;
program = strdup(basename(argv[0]));
pid = getpid();
read_arguments(argc, argv);
allocate_segment(&objectid, (void **)&object,
processes * threads * objects, sizeof(object_t));
create_processes();
if (logging >= 3) {
for (i = 0; i < processes * threads * objects; i++) {
object_dump(i);
} /* of for */
} /* of if */
qsort(object, processes * threads * objects, sizeof(object_t),
object_uuid_compare);
LOG(2, (stdout, "%s %d: qsort() done\n", program, pid));
count = 0;
for (i = 0; i < processes * threads * objects - 1; i++) {
if (object_uuid_compare(&object[i], &object[i + 1]) == 0) {
if (logging >= 1) {
LOG(0,
(stdout,
"%s %d: objects #%d and #%d have duplicate UUIDs\n",
program, pid, i, i + 1));
object_dump(i);
object_dump(i + 1);
} /* of if */
count = count + 1;
} /* of if */
} /* of for */
remove_segment(objectid, object);
if (count == 0) {
LOG(0,
(stdout, "test successful (no duplicate UUIDs found)\n"));
} /* of if */
else {
LOG(0,
(stdout, "test failed (found %d duplicate UUIDs)\n",
count));
} /* of else */
} /* of main */
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