aboutsummaryrefslogtreecommitdiff
path: root/elf/loadtest.c
blob: 5b9e116987692cc218cb45edb9d99e460aab8f03 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
#include <assert.h>
#include <dlfcn.h>
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>


/* How many load/unload operations do we do.  */
#define TEST_ROUNDS	1000


static struct
{
  /* Name of the module.  */
  const char *name;
  /* The handle.  */
  void *handle;
} testobjs[] =
{
  { "testobj1.so", NULL },
  { "testobj2.so", NULL },
  { "testobj3.so", NULL },
  { "testobj4.so", NULL },
  { "testobj5.so", NULL },
  { "testobj6.so", NULL },
};
#define NOBJS	(sizeof (testobjs) / sizeof (testobjs[0]))


static const struct
{
  /* Name of a function to call.  */
  const char *fname;
  /* Index in status and handle array.  */
  int index;
  /* Options while loading the module.  */
  int options;
} tests[] =
{
  { "obj1func2", 0, RTLD_LAZY },
  { "obj1func1", 0, RTLD_LAZY | RTLD_GLOBAL },
  { "obj1func1", 0, RTLD_NOW, },
  { "obj1func2", 0, RTLD_NOW | RTLD_GLOBAL },
  { "obj2func2", 1, RTLD_LAZY },
  { "obj2func1", 1, RTLD_LAZY | RTLD_GLOBAL, },
  { "obj2func1", 1, RTLD_NOW, },
  { "obj2func2", 1, RTLD_NOW | RTLD_GLOBAL },
  { "obj3func2", 2, RTLD_LAZY },
  { "obj3func1", 2, RTLD_LAZY | RTLD_GLOBAL },
  { "obj3func1", 2, RTLD_NOW },
  { "obj3func2", 2, RTLD_NOW | RTLD_GLOBAL },
  { "obj4func2", 3, RTLD_LAZY },
  { "obj4func1", 3, RTLD_LAZY | RTLD_GLOBAL },
  { "obj4func1", 3, RTLD_NOW },
  { "obj4func2", 3, RTLD_NOW | RTLD_GLOBAL },
  { "obj5func2", 4, RTLD_LAZY },
  { "obj5func1", 4, RTLD_LAZY | RTLD_GLOBAL },
  { "obj5func1", 4, RTLD_NOW },
  { "obj5func2", 4, RTLD_NOW | RTLD_GLOBAL },
  { "obj6func2", 5, RTLD_LAZY },
  { "obj6func1", 5, RTLD_LAZY | RTLD_GLOBAL },
  { "obj6func1", 5, RTLD_NOW },
  { "obj6func2", 5, RTLD_NOW | RTLD_GLOBAL },
};
#define NTESTS	(sizeof (tests) / sizeof (tests[0]))


int
main (void)
{
  int count = TEST_ROUNDS;

  /* Just a seed.  */
  srandom (TEST_ROUNDS);

  while (count--)
    {
      int nr = random () % NTESTS;
      int index = tests[nr].index;

      printf ("%4d: %4d: ", count + 1, nr);
      fflush (stdout);

      if (testobjs[index].handle == NULL)
	{
	  int (*fct) (int);

	  /* Load the object.  */
	  testobjs[index].handle = dlopen (testobjs[index].name,
					   tests[nr].options);
	  if (testobjs[index].handle == NULL)
	    error (EXIT_FAILURE, 0, "cannot load `%s': %s",
		   testobjs[index].name, dlerror ());

	  /* Test the function call.  */
	  fct = dlsym (testobjs[index].handle, tests[nr].fname);
	  if (fct == NULL)
	    error (EXIT_FAILURE, 0,
		   "cannot get function `%s' from shared object `%s': %s",
		   tests[nr].fname, testobjs[index].name, dlerror ());

	  fct (10);

	  printf ("successfully loaded `%s'\n", testobjs[index].name);
	}
      else
	{
	  dlclose (testobjs[index].handle);
	  testobjs[index].handle = NULL;

	  printf ("successfully unloaded `%s'\n", testobjs[index].name);
	}
    }

  /* Unload all loaded modules.  */
  for (count = 0; count < NOBJS; ++count)
    if (testobjs[count].handle != NULL)
      dlclose (testobjs[count].handle);

  return 0;
}


int
foo (int a)
{
  return a - 1;
}