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//=============================================================================
/**
* @file DLL_Test.cpp
*
* This test illustrates the use of <ACE_DLL> wrapper class.
*
* @author Kirthika Parameswaran <kirthika@cs.wustl.edu>
*/
//=============================================================================
#include "test_config.h"
#include "ace/DLL.h"
#include "ace/Auto_Ptr.h"
#include "ace/ACE.h"
#include "ace/DLL_Manager.h"
#include "ace/SString.h"
#include "ace/OS_NS_dlfcn.h"
#include "DLL_Test.h"
#if defined (ACE_LD_DECORATOR_STR)
# define OBJ_SUFFIX ACE_LD_DECORATOR_STR ACE_DLL_SUFFIX
#else
# define OBJ_SUFFIX ACE_DLL_SUFFIX
#endif /* ACE_LD_DECORATOR_STR */
#if defined (ACE_WIN32) || defined (ACE_OPENVMS)
# define OBJ_PREFIX ACE_DLL_PREFIX
#else
# define OBJ_PREFIX ACE_TEXT("./") ACE_DLL_PREFIX
#endif /* ACE_WIN32 */
// Declare the type of the symbol:
using Hello_Factory = Hello *(*)();
using PFN = int (*)(Parent *);
int handle_test (ACE_DLL &dll)
{
// Test the get/set_handle methods.
ACE_DLL local_dll;
ACE_SHLIB_HANDLE handle = dll.get_handle (1);
if (handle != ACE_SHLIB_INVALID_HANDLE)
{
if (local_dll.set_handle (handle) != 0)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("Error setting handle.\n")),
-1);
return 0;
}
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("Error getting handle.\n")),
-1);
}
int basic_test (ACE_DLL &dll)
{
ACE_TString dll_file;
const char *subdir_env = ACE_OS::getenv ("ACE_EXE_SUB_DIR");
if (subdir_env)
{
dll_file = ACE_TEXT_CHAR_TO_TCHAR (subdir_env);
dll_file += ACE_DIRECTORY_SEPARATOR_STR;
}
dll_file += OBJ_PREFIX ACE_TEXT ("DLL_Test_Lib") OBJ_SUFFIX;
int retval = dll.open (dll_file.c_str());
if (retval != 0)
{
ACE_TCHAR *dll_error = dll.error ();
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("Error in DLL Open of <%s>: %s\n"),
OBJ_PREFIX ACE_TEXT ("DLL_Test_Lib") OBJ_SUFFIX,
dll_error ? dll_error : ACE_TEXT ("unknown error")),
-1);
}
// Just because the ANSI C++ spec says you can no longer cast a
// void* to a function pointer. Doesn't allow:
// TC f = (Hello_Factory) dll.symbol ("get_hello");
void *foo = dll.symbol (ACE_TEXT ("get_hello"));
// Cast the void* to long first.
ptrdiff_t tmp = reinterpret_cast<ptrdiff_t> (foo);
Hello_Factory factory = reinterpret_cast<Hello_Factory> (tmp);
if (factory == 0)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
dll.error ()),
-1);
std::unique_ptr<Hello> my_hello (factory ());
// Make the method calls, as the object pointer is available.
my_hello->say_hello ();
my_hello->say_next ();
// Allocate and delete a string allocated via new in a different dll.
ACE_TCHAR *new_str = my_hello->new_info ();
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Result for new_info(): %s\n"), new_str));
ACE::strdelete (new_str);
// Allocate and free a string allocated via malloc in a different dll.
ACE_TCHAR *malloc_str = my_hello->malloc_info ();
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("Result for malloc_info(): %s\n"), malloc_str));
ACE_OS::free (malloc_str);
return 0;
}
int dynamic_cast_test (ACE_DLL &dll)
{
Child child;
child.test();
Parent *parent = &child;
void * foo = dll.symbol (ACE_TEXT ("dynamic_cast_test"));
// Cast the void* to long first.
ptrdiff_t tmp = reinterpret_cast<ptrdiff_t> (foo);
PFN pfnAcquire = reinterpret_cast<PFN> (tmp);
if (pfnAcquire == 0)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
dll.error ()),
-1);
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("before %@ %@\n"),
&child, dynamic_cast<Child*> (parent)));
if (pfnAcquire (&child) == -1)
ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("dynamic_cast failed.\n")), -1);
return 0;
}
int
run_main (int, ACE_TCHAR *[])
{
ACE_START_TEST (ACE_TEXT ("DLL_Test"));
int retval = 0;
// Protection against this test being run on platforms not supporting Dlls.
#if defined(ACE_HAS_DYNAMIC_LINKING)
ACE_DLL dll;
retval += basic_test (dll);
retval += dynamic_cast_test (dll);
retval += handle_test (dll);
// Call close here so that any errors make it into the log.
dll.close ();
#else
ACE_ERROR ((LM_INFO,
ACE_TEXT ("Dynamically Linkable Libraries not supported on this platform\n")));
#endif /* ACE_HAS_DYNAMIC_LINKING */
void* invalid_handle = ACE_OS::dlsym (ACE_SHLIB_INVALID_HANDLE, ACE_TEXT ("open"));
if (invalid_handle != nullptr)
{
ACE_ERROR ((LM_ERROR, ACE_TEXT ("ACE_OS::dlsym using invalid handle should be nullptr and not %@\n")));
++retval;
}
else
{
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("dlsym on invalid handle returned nullptr\n")));
}
ACE_END_TEST;
return retval == 0 ? 0 : 1;
}
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