1/*
2 * Copyright (c) 2010 Apple Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23#include <stdio.h>  // fprintf(), NULL
24#include <stdlib.h> // exit(), EXIT_SUCCESS
25#include <string.h>
26#include <dlfcn.h>
27#include <pthread.h>
28
29#include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
30
31
32void* h1 = NULL;
33void* h2 = NULL;
34
35static void* work(void* ignore)
36{
37	for (int i=0; i < 10000; ++i) {
38		h1 = dlopen("libfoo1.dylib", 0);
39		if ( h1 == NULL ) {
40			FAIL("dlopen failed: %s", dlerror());
41			exit(0);
42		}
43		dlclose(h2);
44		h2 = dlopen("libfoo2.dylib", 0);
45		if ( h2 == NULL ) {
46			FAIL("dlopen failed: %s", dlerror());
47			exit(0);
48		}
49		dlclose(h1);
50	}
51
52	//fprintf(stderr, "done with foos\n");
53	return NULL;
54}
55
56
57int main()
58{
59	h2 = dlopen("libfoo2.dylib", 0);
60	if ( h2 == NULL ) {
61		FAIL("dlopen failed: %s", dlerror());
62		exit(0);
63	}
64
65	// other thread dlopens and closes libfoo.dylib 500 times
66	pthread_t other;
67	if ( pthread_create(&other, NULL, work, NULL) != 0 ) {
68		FAIL("pthread_create failed");
69		exit(0);
70	}
71
72	// this thread looks up a symbol 10,000 times
73	for (int i=0; i < 15000; ++i) {
74		void* handle = dlopen("libclient.dylib", 0);
75		if ( handle == NULL ) {
76			FAIL("dlopen failed: %s", dlerror());
77			exit(0);
78		}
79		typedef void (*proc_t)();
80		proc_t proc = dlsym(handle, "doit");
81		if ( proc == NULL ) {
82			FAIL("dlsym failed: %s", dlerror());
83			exit(0);
84		}
85		(*proc)();
86		dlclose(handle);
87	}
88	//fprintf(stderr, "done with libclient\n");
89
90	void* result;
91	pthread_join(other, &result);
92
93	PASS("threaded-flat-lookup");
94	return 0;
95}
96