[thirdparty/util-linux.git] / misc-utils / test_uuidd.c

/*
 * Copyright (C) 2006 Hewlett-Packard Development Company, L.P.
 * Huschaam Hussain <Huschaam.Hussain@hp.com>
 *	TSG Solution Alliances Engineering
 *	SAP Technology Group
 *
 * Copyright (C) 2015 Karel Zak <kzak@redhat.com>
 *
 *
 * The test heavily uses shared memory, to enlarge maximal size of shared
 * segment use:
 *
 *	echo "4294967295" > /proc/sys/kernel/shmm
 *
 * The test is compiled against in-tree libuuid, if you want to test uuidd
 * installed to the system then make sure that libuuid uses the same socket
 * like the running uuidd. You can start the uuidd manually, for example:
 *
 *	uuidd --debug --no-fork --no-pid --socket /run/uuidd/request
 *
 * if the $localstatedir (as defined by build-system) is /run. If you want
 * to overwrite the built-in default then use:
 *
 *	make uuidd uuidgen localstatedir=/var
 */
#include <error.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.h"
#include "c.h"
#include "xalloc.h"
#include "strutils.h"
#include "nls.h"

#define LOG(level,args) if (loglev >= level) { fprintf args; }

size_t nprocesses = 4;
size_t nthreads = 4;
size_t nobjects = 4096;
size_t loglev = 1;

struct processentry {
	pid_t		pid;
	int		status;
};
typedef struct processentry process_t;

struct threadentry {
	process_t	*proc;
	pthread_t	tid;		/* pthread_self() / phtread_create() */
	pthread_attr_t	thread_attr;
	size_t		index;		/* index in object[] */
	int		retval;		/* pthread exit() */
};
typedef struct threadentry thread_t;

/* this is in shared memory, keep it as small as possible */
struct objectentry {
	uuid_t		uuid;
	pthread_t	tid;
	pid_t		pid;
	size_t		idx;
};
typedef struct objectentry object_t;

static int shmem_id;
static object_t *objects;


static void __attribute__((__noreturn__)) usage(FILE *out)
{
	fprintf(out, "\n %s [options]\n", program_invocation_short_name);

	fprintf(out, "  -p <num>     number of of nprocesses (default:%zu)\n", nprocesses);
	fprintf(out, "  -t <num>     number of nthreads (default:%zu)\n", nthreads);
	fprintf(out, "  -o <num>     number of nobjects (default:%zu)\n", nobjects);
	fprintf(out, "  -l <level>   log level (default:%zu)\n", loglev);
	fprintf(out, "  -h           display help\n");

	exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
}

static 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)
		err(EXIT_FAILURE, "shmget failed to create %zu bytes shared memory", number * size);

	*address = shmat(*id, NULL, 0);
	if (*address == (void *)-1)
		err(EXIT_FAILURE, "shmat failed");

	LOG(2, (stderr,
	     "allocate shared memory segment [id=%d,address=0x%p]\n",
	     *id, *address));

	memset(*address, 0, number * size);
}

static void remove_segment(int id, void *address)
{
	if (shmdt(address) == -1)
		err(EXIT_FAILURE, "shmdt failed");
	if (shmctl(id, IPC_RMID, NULL) == -1)
		err(EXIT_FAILURE, "shmctl failed");
	LOG(2,
	    (stderr,
	     "remove shared memory segment [id=%d,address=0x%p]\n",
	     id, address));
}

static void object_uuid_create(object_t * object)
{
	uuid_generate_time(object->uuid);
}

static void object_uuid_to_string(object_t * object, char **string_uuid)
{
	uuid_unparse(object->uuid, *string_uuid);
}

static int object_uuid_compare(const void *object1, const void *object2)
{
	uuid_t *uuid1 = &((object_t *) object1)->uuid,
	       *uuid2 = &((object_t *) object2)->uuid;

	return uuid_compare(*uuid1, *uuid2);
}

static void *create_uuids(thread_t *th)
{
	size_t i;

	for (i = th->index; i < th->index + nobjects; i++) {
		object_t *obj = &objects[i];

		object_uuid_create(obj);
		obj->tid = th->tid;
		obj->pid = th->proc->pid;
		obj->idx = th->index + i;;
	}
	return 0;
}

static void *thread_body(void *arg)
{
	thread_t *th = (thread_t *) arg;

	return create_uuids(th);
}

static void create_nthreads(process_t *proc, size_t index)
{
	thread_t *threads;
	size_t i, ncreated = 0;
	int rc;

	threads = xcalloc(nthreads, sizeof(thread_t));

	for (i = 0; i < nthreads; i++) {
		thread_t *th = &threads[i];

		rc = pthread_attr_init(&th->thread_attr);
		if (rc) {
			error(0, rc, "%d: pthread_attr_init failed", proc->pid);
			break;
		}

		th->index = index;
		th->proc = proc;
		rc = pthread_create(&th->tid, &th->thread_attr, &thread_body, th);

		if (rc) {
			error(0, rc, "%d: pthread_create failed", proc->pid);
			break;
		}

		LOG(2, (stderr, "%d: started thread [tid=%d,index=%zu]\n",
		     proc->pid, (int) th->tid, th->index));
		index += nobjects;
		ncreated++;
	}

	if (ncreated != nthreads)
		fprintf(stderr, "%d: %zu threads not created and ~%zu objects will be ignored\n",
				proc->pid, nthreads - ncreated,
				(nthreads - ncreated) * nobjects);

	for (i = 0; i < ncreated; i++) {
		thread_t *th = &threads[i];

		rc = pthread_join(th->tid, (void *) &th->retval);
		if (rc)
			error(EXIT_FAILURE, rc, "pthread_join failed");

		LOG(2, (stderr, "%d: thread exited [tid=%d,return=%d]\n",
		     proc->pid, (int) th->tid, th->retval));
	}
}

static void create_nprocesses(void)
{
	process_t *process;
	size_t i;

	process = xcalloc(nprocesses, sizeof(process_t));

	for (i = 0; i < nprocesses; i++) {
		process_t *proc = &process[i];

		proc->pid = fork();
		switch (proc->pid) {
		case -1: /* error */
			err(EXIT_FAILURE, "fork failed");
			break;
		case 0: /* child */
			proc->pid = getpid();
			create_nthreads(proc, i * nthreads * nobjects);
			exit(EXIT_SUCCESS);
			break;
		default: /* parent */
			LOG(2, (stderr, "started process [pid=%d]\n", proc->pid));
			break;
		}
	}

	for (i = 0; i < nprocesses; i++) {
		process_t *proc = &process[i];

		if (waitpid(proc->pid, &proc->status, 0) == (pid_t) - 1)
			err(EXIT_FAILURE, "waitpid failed");
		LOG(2,
		    (stderr, "process exited [pid=%d,status=%d]\n",
		     proc->pid, proc->status));
	}
}

static void object_dump(size_t idx, object_t *obj)
{
	char uuid_string[37], *p;

	p = uuid_string;
	object_uuid_to_string(obj, &p);

	fprintf(stderr, "object[%zu]: {\n", idx);
	fprintf(stderr, "  uuid:    <%s>\n", p);
	fprintf(stderr, "  idx:     %zu\n", obj->idx);
	fprintf(stderr, "  process: %d\n", (int) obj->pid);
	fprintf(stderr, "  thread:  %d\n", (int) obj->tid);
	fprintf(stderr, "}\n");
}

int main(int argc, char *argv[])
{
	size_t i, nfailed = 0, nignored = 0;
	int c;

	while (((c = getopt(argc, argv, "p:t:o:l:h")) != -1)) {
		switch (c) {
		case 'p':
			nprocesses = strtou32_or_err(optarg, "invalid nprocesses number argument");
			break;
		case 't':
			nthreads = strtou32_or_err(optarg, "invalid nthreads number argument");
			break;
		case 'o':
			nobjects = strtou32_or_err(optarg, "invalid nobjects number argument");
			break;
		case 'l':
			loglev = strtou32_or_err(optarg, "invalid log level argument");
			break;
		case 'h':
			usage(stdout);
			break;
		default:
			errtryh(EXIT_FAILURE);
		}
	}

	if (optind != argc)
		usage(stderr);

	if (loglev == 1)
		fprintf(stderr, "requested: %zu processes, %zu threads, %zu objects per thread (%zu objects = %zu bytes)\n",
				nprocesses, nthreads, nobjects,
				nprocesses * nthreads * nobjects,
				nprocesses * nthreads * nobjects * sizeof(object_t));

	allocate_segment(&shmem_id, (void **)&objects,
			 nprocesses * nthreads * nobjects, sizeof(object_t));

	create_nprocesses();

	if (loglev >= 3) {
		for (i = 0; i < nprocesses * nthreads * nobjects; i++)
			object_dump(i, &objects[i]);
	}

	qsort(objects, nprocesses * nthreads * nobjects, sizeof(object_t),
	      object_uuid_compare);

	for (i = 0; i < nprocesses * nthreads * nobjects - 1; i++) {
		object_t *obj1 = &objects[i],
			 *obj2 = &objects[i + 1];

		if (!obj1->tid) {
			LOG(3, (stderr, "ignore unused object #%zu\n", i));
			nignored++;
			continue;
		}

		if (object_uuid_compare(obj1, obj2) == 0) {
			if (loglev >= 1)
				fprintf(stderr, "nobjects #%zu and #%zu have duplicate UUIDs\n",
					i, i + 1);
					object_dump(i, obj1),
					object_dump(i + 1, obj2);
			nfailed++;
		}
	}

	remove_segment(shmem_id, objects);
	if (nignored)
		printf("%zu objects ignored\n", nignored);
	if (!nfailed)
		printf("test successful (no duplicate UUIDs found)\n");
	else
		printf("test failed (found %zu duplicate UUIDs)\n", nfailed);

	return nfailed ? EXIT_FAILURE : EXIT_SUCCESS;
}
Commit	Line	Data
0f2b00ce KZ	1	/*
	2	* Copyright (C) 2006 Hewlett-Packard Development Company, L.P.
	3	* Huschaam Hussain <Huschaam.Hussain@hp.com>
	4	* TSG Solution Alliances Engineering
	5	* SAP Technology Group
	6	*
	7	* Copyright (C) 2015 Karel Zak <kzak@redhat.com>
28f47fd2 KZ	8	*
	9	*
	10	* The test heavily uses shared memory, to enlarge maximal size of shared
	11	* segment use:
	12	*
	13	* echo "4294967295" > /proc/sys/kernel/shmm
	14	*
	15	* The test is compiled against in-tree libuuid, if you want to test uuidd
	16	* installed to the system then make sure that libuuid uses the same socket
	17	* like the running uuidd. You can start the uuidd manually, for example:
	18	*
	19	* uuidd --debug --no-fork --no-pid --socket /run/uuidd/request
	20	*
	21	* if the $localstatedir (as defined by build-system) is /run. If you want
	22	* to overwrite the built-in default then use:
	23	*
	24	* make uuidd uuidgen localstatedir=/var
0f2b00ce KZ	25	*/
0f2b00ce KZ	26	#include <error.h>
963f128c HH	27	#include <pthread.h>
	28	#include <stdio.h>
	29	#include <stdlib.h>
	30	#include <string.h>
	31	#include <unistd.h>
	32	#include <sys/shm.h>
	33	#include <sys/types.h>
	34	#include <sys/wait.h>
	35
adbc73eb	36	#include "uuid.h"
0f2b00ce KZ	37	#include "c.h"
	38	#include "xalloc.h"
	39	#include "strutils.h"
677ec86c	40	#include "nls.h"
0f2b00ce	41
17930612	42	#define LOG(level,args) if (loglev >= level) { fprintf args; }
963f128c	43
17930612 KZ	44	size_t nprocesses = 4;
	45	size_t nthreads = 4;
	46	size_t nobjects = 4096;
	47	size_t loglev = 1;
f4be1406 KZ	48
	49	struct processentry {
	50	pid_t pid;
	51	int status;
	52	};
	53	typedef struct processentry process_t;
963f128c HH	54
963f128c HH	55	struct threadentry {
f4be1406 KZ	56	process_t *proc;
	57	pthread_t tid; /* pthread_self() / phtread_create() */
	58	pthread_attr_t thread_attr;
	59	size_t index; /* index in object[] */
	60	int retval; /* pthread exit() */
963f128c HH	61	};
	62	typedef struct threadentry thread_t;
	63
4d524158	64	/* this is in shared memory, keep it as small as possible */
963f128c	65	struct objectentry {
f4be1406	66	uuid_t uuid;
a539def5 KZ	67	pthread_t tid;
	68	pid_t pid;
	69	size_t idx;
963f128c HH	70	};
	71	typedef struct objectentry object_t;
	72
f4be1406	73	static int shmem_id;
1d27cd11	74	static object_t *objects;
963f128c	75
963f128c	76
0f2b00ce	77	static void __attribute__((__noreturn__)) usage(FILE *out)
963f128c	78	{
0f2b00ce	79	fprintf(out, "\n %s [options]\n", program_invocation_short_name);
963f128c	80
17930612 KZ	81	fprintf(out, " -p <num> number of of nprocesses (default:%zu)\n", nprocesses);
	82	fprintf(out, " -t <num> number of nthreads (default:%zu)\n", nthreads);
	83	fprintf(out, " -o <num> number of nobjects (default:%zu)\n", nobjects);
	84	fprintf(out, " -l <level> log level (default:%zu)\n", loglev);
0f2b00ce	85	fprintf(out, " -h display help\n");
963f128c	86
0f2b00ce KZ	87	exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
0f2b00ce KZ	88	}
963f128c	89
0f2b00ce	90	static void allocate_segment(int id, void *address, size_t number, size_t size)
963f128c HH	91	{
	92	id = shmget(IPC_PRIVATE, number size, IPC_CREAT \| 0600);
	93	if (*id == -1)
1d27cd11	94	err(EXIT_FAILURE, "shmget failed to create %zu bytes shared memory", number * size);
0f2b00ce	95
963f128c HH	96	address = shmat(id, NULL, 0);
963f128c HH	97	if (address == (void )-1)
0f2b00ce KZ	98	err(EXIT_FAILURE, "shmat failed");
	99
	100	LOG(2, (stderr,
7eeb7e1d KZ	101	"allocate shared memory segment [id=%d,address=0x%p]\n",
7eeb7e1d KZ	102	id, address));
4d524158 KZ	103
4d524158 KZ	104	memset(address, 0, number size);
0f2b00ce	105	}
963f128c	106
0f2b00ce	107	static void remove_segment(int id, void *address)
963f128c HH	108	{
963f128c HH	109	if (shmdt(address) == -1)
0f2b00ce	110	err(EXIT_FAILURE, "shmdt failed");
963f128c	111	if (shmctl(id, IPC_RMID, NULL) == -1)
0f2b00ce	112	err(EXIT_FAILURE, "shmctl failed");
963f128c HH	113	LOG(2,
963f128c HH	114	(stderr,
7eeb7e1d KZ	115	"remove shared memory segment [id=%d,address=0x%p]\n",
7eeb7e1d KZ	116	id, address));
0f2b00ce	117	}
963f128c	118
0f2b00ce	119	static void object_uuid_create(object_t * object)
963f128c HH	120	{
963f128c HH	121	uuid_generate_time(object->uuid);
0f2b00ce	122	}
963f128c	123
f4be1406	124	static void object_uuid_to_string(object_t * object, char **string_uuid)
963f128c HH	125	{
963f128c HH	126	uuid_unparse(object->uuid, *string_uuid);
0f2b00ce	127	}
963f128c	128
0f2b00ce	129	static int object_uuid_compare(const void object1, const void object2)
963f128c	130	{
f4be1406 KZ	131	uuid_t uuid1 = &((object_t ) object1)->uuid,
f4be1406 KZ	132	uuid2 = &((object_t ) object2)->uuid;
963f128c	133
f4be1406	134	return uuid_compare(uuid1, uuid2);
0f2b00ce	135	}
963f128c	136
f4be1406	137	static void create_uuids(thread_t th)
963f128c	138	{
f4be1406	139	size_t i;
963f128c	140
17930612	141	for (i = th->index; i < th->index + nobjects; i++) {
1d27cd11 KZ	142	object_t *obj = &objects[i];
	143
	144	object_uuid_create(obj);
a539def5 KZ	145	obj->tid = th->tid;
	146	obj->pid = th->proc->pid;
	147	obj->idx = th->index + i;;
0f2b00ce	148	}
f4be1406	149	return 0;
0f2b00ce	150	}
963f128c	151
f4be1406 KZ	152	static void thread_body(void arg)
	153	{
	154	thread_t th = (thread_t ) arg;
	155
	156	return create_uuids(th);
	157	}
	158
17930612	159	static void create_nthreads(process_t *proc, size_t index)
963f128c	160	{
1d27cd11	161	thread_t *threads;
4d524158	162	size_t i, ncreated = 0;
1d27cd11 KZ	163	int rc;
1d27cd11 KZ	164
fea1cbf7	165	threads = xcalloc(nthreads, sizeof(thread_t));
963f128c	166
17930612	167	for (i = 0; i < nthreads; i++) {
1d27cd11	168	thread_t *th = &threads[i];
0f2b00ce	169
1d27cd11	170	rc = pthread_attr_init(&th->thread_attr);
4d524158 KZ	171	if (rc) {
	172	error(0, rc, "%d: pthread_attr_init failed", proc->pid);
	173	break;
	174	}
1d27cd11 KZ	175
	176	th->index = index;
	177	th->proc = proc;
	178	rc = pthread_create(&th->tid, &th->thread_attr, &thread_body, th);
	179
4d524158 KZ	180	if (rc) {
	181	error(0, rc, "%d: pthread_create failed", proc->pid);
	182	break;
	183	}
1d27cd11 KZ	184
	185	LOG(2, (stderr, "%d: started thread [tid=%d,index=%zu]\n",
	186	proc->pid, (int) th->tid, th->index));
17930612	187	index += nobjects;
4d524158	188	ncreated++;
0f2b00ce KZ	189	}
0f2b00ce KZ	190
4d524158	191	if (ncreated != nthreads)
9e930041	192	fprintf(stderr, "%d: %zu threads not created and ~%zu objects will be ignored\n",
4d524158 KZ	193	proc->pid, nthreads - ncreated,
	194	(nthreads - ncreated) * nobjects);
	195
	196	for (i = 0; i < ncreated; i++) {
1d27cd11 KZ	197	thread_t *th = &threads[i];
	198
	199	rc = pthread_join(th->tid, (void *) &th->retval);
	200	if (rc)
	201	error(EXIT_FAILURE, rc, "pthread_join failed");
	202
	203	LOG(2, (stderr, "%d: thread exited [tid=%d,return=%d]\n",
	204	proc->pid, (int) th->tid, th->retval));
0f2b00ce	205	}
0f2b00ce	206	}
963f128c	207
17930612	208	static void create_nprocesses(void)
963f128c HH	209	{
963f128c HH	210	process_t *process;
f4be1406	211	size_t i;
963f128c	212
fea1cbf7	213	process = xcalloc(nprocesses, sizeof(process_t));
1d27cd11	214
17930612	215	for (i = 0; i < nprocesses; i++) {
1d27cd11 KZ	216	process_t *proc = &process[i];
	217
	218	proc->pid = fork();
	219	switch (proc->pid) {
7eeb7e1d	220	case -1: /* error */
0f2b00ce	221	err(EXIT_FAILURE, "fork failed");
963f128c	222	break;
7eeb7e1d	223	case 0: /* child */
1d27cd11 KZ	224	proc->pid = getpid();
1d27cd11 KZ	225	create_nthreads(proc, i * nthreads * nobjects);
0f2b00ce	226	exit(EXIT_SUCCESS);
963f128c	227	break;
7eeb7e1d	228	default: /* parent */
1d27cd11	229	LOG(2, (stderr, "started process [pid=%d]\n", proc->pid));
963f128c	230	break;
0f2b00ce KZ	231	}
	232	}
	233
17930612	234	for (i = 0; i < nprocesses; i++) {
1d27cd11	235	process_t *proc = &process[i];
0f2b00ce	236
1d27cd11 KZ	237	if (waitpid(proc->pid, &proc->status, 0) == (pid_t) - 1)
1d27cd11 KZ	238	err(EXIT_FAILURE, "waitpid failed");
963f128c	239	LOG(2,
7eeb7e1d	240	(stderr, "process exited [pid=%d,status=%d]\n",
1d27cd11	241	proc->pid, proc->status));
0f2b00ce	242	}
0f2b00ce	243	}
963f128c	244
1d27cd11	245	static void object_dump(size_t idx, object_t *obj)
963f128c	246	{
f4be1406	247	char uuid_string[37], *p;
963f128c HH	248
963f128c HH	249	p = uuid_string;
1d27cd11 KZ	250	object_uuid_to_string(obj, &p);
1d27cd11 KZ	251
032776e8 KZ	252	fprintf(stderr, "object[%zu]: {\n", idx);
032776e8 KZ	253	fprintf(stderr, " uuid: <%s>\n", p);
a539def5 KZ	254	fprintf(stderr, " idx: %zu\n", obj->idx);
	255	fprintf(stderr, " process: %d\n", (int) obj->pid);
	256	fprintf(stderr, " thread: %d\n", (int) obj->tid);
032776e8	257	fprintf(stderr, "}\n");
0f2b00ce	258	}
963f128c	259
0f2b00ce	260	int main(int argc, char *argv[])
963f128c	261	{
1d27cd11	262	size_t i, nfailed = 0, nignored = 0;
0f2b00ce KZ	263	int c;
	264
	265	while (((c = getopt(argc, argv, "p:t:o:l:h")) != -1)) {
	266	switch (c) {
	267	case 'p':
17930612	268	nprocesses = strtou32_or_err(optarg, "invalid nprocesses number argument");
0f2b00ce KZ	269	break;
0f2b00ce KZ	270	case 't':
17930612	271	nthreads = strtou32_or_err(optarg, "invalid nthreads number argument");
0f2b00ce KZ	272	break;
0f2b00ce KZ	273	case 'o':
17930612	274	nobjects = strtou32_or_err(optarg, "invalid nobjects number argument");
0f2b00ce KZ	275	break;
0f2b00ce KZ	276	case 'l':
17930612	277	loglev = strtou32_or_err(optarg, "invalid log level argument");
0f2b00ce KZ	278	break;
	279	case 'h':
	280	usage(stdout);
	281	break;
	282	default:
677ec86c	283	errtryh(EXIT_FAILURE);
0f2b00ce KZ	284	}
	285	}
	286
	287	if (optind != argc)
	288	usage(stderr);
	289
17930612	290	if (loglev == 1)
1d27cd11 KZ	291	fprintf(stderr, "requested: %zu processes, %zu threads, %zu objects per thread (%zu objects = %zu bytes)\n",
	292	nprocesses, nthreads, nobjects,
	293	nprocesses * nthreads * nobjects,
	294	nprocesses * nthreads * nobjects * sizeof(object_t));
0f2b00ce	295
1d27cd11	296	allocate_segment(&shmem_id, (void **)&objects,
17930612	297	nprocesses * nthreads * nobjects, sizeof(object_t));
1d27cd11	298
17930612	299	create_nprocesses();
1d27cd11	300
17930612 KZ	301	if (loglev >= 3) {
17930612 KZ	302	for (i = 0; i < nprocesses * nthreads * nobjects; i++)
1d27cd11	303	object_dump(i, &objects[i]);
0f2b00ce	304	}
7eeb7e1d	305
1d27cd11	306	qsort(objects, nprocesses * nthreads * nobjects, sizeof(object_t),
963f128c	307	object_uuid_compare);
1d27cd11	308
17930612	309	for (i = 0; i < nprocesses * nthreads * nobjects - 1; i++) {
1d27cd11 KZ	310	object_t *obj1 = &objects[i],
	311	*obj2 = &objects[i + 1];
	312
a539def5	313	if (!obj1->tid) {
1d27cd11 KZ	314	LOG(3, (stderr, "ignore unused object #%zu\n", i));
	315	nignored++;
	316	continue;
	317	}
	318
	319	if (object_uuid_compare(obj1, obj2) == 0) {
17930612 KZ	320	if (loglev >= 1)
17930612 KZ	321	fprintf(stderr, "nobjects #%zu and #%zu have duplicate UUIDs\n",
7eeb7e1d	322	i, i + 1);
1d27cd11 KZ	323	object_dump(i, obj1),
	324	object_dump(i + 1, obj2);
	325	nfailed++;
0f2b00ce KZ	326	}
0f2b00ce KZ	327	}
1d27cd11 KZ	328
	329	remove_segment(shmem_id, objects);
	330	if (nignored)
cfa4171a	331	printf("%zu objects ignored\n", nignored);
1d27cd11	332	if (!nfailed)
f4be1406 KZ	333	printf("test successful (no duplicate UUIDs found)\n");
f4be1406 KZ	334	else
1d27cd11	335	printf("test failed (found %zu duplicate UUIDs)\n", nfailed);
4d524158 KZ	336
4d524158 KZ	337	return nfailed ? EXIT_FAILURE : EXIT_SUCCESS;
0f2b00ce	338	}