1 #include <stdio.h> 2 #include <dlfcn.h> 3 4 typedef void (*test_func_t)(int *px); 5 int x; 6 7 int main(void) 8 { 9 void* lib = dlopen("libtest1.so", RTLD_NOW); 10 test_func_t test_func; 11 12 if (lib == NULL) { 13 fprintf(stderr, "Can't load library: %s\n", dlerror()); 14 return 1; 15 } 16 17 printf("Loaded !\n"); 18 19 test_func = dlsym(lib, "test1_set"); 20 if (test_func == NULL) { 21 fprintf(stderr, "Can't find test function\n"); 22 return 2; 23 } 24 25 x = 0; 26 test_func(&x); 27 28 if (x == 1) { 29 printf("Test function called !\n"); 30 } else { 31 fprintf(stderr, "Test function failed to set variable !\n"); 32 return 3; 33 } 34 35 dlclose(lib); 36 printf("Unloaded !\n"); 37 38 if (x == 2) { 39 printf("Test destructor called !\n"); 40 } else if (x == 1) { 41 fprintf(stderr, "Test destructor was *not* called !\n"); 42 return 4; 43 } else { 44 fprintf(stderr, "Test destructor called but returned invalid value (%d)\n", x); 45 return 5; 46 } 47 return 0; 48 } 49
