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// -*- C++ -*-
// $Id$
#include "ace/OS_NS_macros.h"
#include "ace/OS_NS_errno.h"
#include "ace/OS_NS_fcntl.h"
#include "ace/OS_NS_string.h"
#include "ace/OS_NS_unistd.h"
#include "ace/Default_Constants.h"
#include "ace/os_include/os_fcntl.h"
#include "ace/os_include/os_string.h"
#if defined (ACE_USES_ASM_SYMBOL_IN_DLSYM)
# include "ace/OS_Memory.h"
# include "ace/OS_NS_string.h"
#endif /* ACE_USES_ASM_SYMBOL_IN_DLSYM */
ACE_INLINE int
ACE_OS::dlclose (ACE_SHLIB_HANDLE handle)
{
ACE_OS_TRACE ("ACE_OS::dlclose");
#if defined (ACE_LACKS_DLCLOSE)
ACE_UNUSED_ARG (handle);
return 0;
#elif defined (ACE_HAS_SVR4_DYNAMIC_LINKING)
# if !defined (ACE_HAS_AUTOMATIC_INIT_FINI)
// SunOS4 does not automatically call _fini()!
void *ptr;
ACE_OSCALL (::dlsym (handle, ACE_LIB_TEXT ("_fini")), void *, 0, ptr);
if (ptr != 0)
(*((int (*)(void)) ptr)) (); // Call _fini hook explicitly.
# endif /* ACE_HAS_AUTOMATIC_INIT_FINI */
#if defined (_M_UNIX)
ACE_OSCALL_RETURN (::_dlclose (handle), int, -1);
#else /* _MUNIX */
ACE_OSCALL_RETURN (::dlclose (handle), int, -1);
#endif /* _M_UNIX */
#elif defined (ACE_WIN32)
ACE_WIN32CALL_RETURN (ACE_ADAPT_RETVAL (::FreeLibrary (handle), ace_result_), int, -1);
#elif defined (__hpux)
// HP-UX 10.x and 32-bit 11.00 do not pay attention to the ref count
// when unloading a dynamic lib. So, if the ref count is more than
// 1, do not unload the lib. This will cause a library loaded more
// than once to not be unloaded until the process runs down, but
// that's life. It's better than unloading a library that's in use.
// So far as I know, there's no way to decrement the refcnt that the
// kernel is looking at - the shl_descriptor is a copy of what the
// kernel has, not the actual struct. On 64-bit HP-UX using dlopen,
// this problem has been fixed.
struct shl_descriptor desc;
if (shl_gethandle_r (handle, &desc) == -1)
return -1;
if (desc.ref_count > 1)
return 0;
# if defined(__GNUC__) || __cplusplus >= 199707L
ACE_OSCALL_RETURN (::shl_unload (handle), int, -1);
# else
ACE_OSCALL_RETURN (::cxxshl_unload (handle), int, -1);
# endif /* aC++ vs. Hp C++ */
#else
ACE_UNUSED_ARG (handle);
ACE_NOTSUP_RETURN (-1);
#endif /* ACE_HAS_SVR4_DYNAMIC_LINKING */
}
ACE_INLINE ACE_TCHAR *
ACE_OS::dlerror (void)
{
ACE_OS_TRACE ("ACE_OS::dlerror");
# if defined (ACE_HAS_SVR4_DYNAMIC_LINKING)
const char *err;
# if defined(_M_UNIX)
ACE_OSCALL (::_dlerror (), const char *, 0, err);
# else /* _M_UNIX */
ACE_OSCALL (::dlerror (), const char *, 0, err);
# endif /* _M_UNIX */
if (err == 0)
return 0;
# if defined (ACE_USES_WCHAR)
const size_t BufLen = 256;
static wchar_t buf[BufLen];
ACE_OS::strncpy (buf, ACE_TEXT_CHAR_TO_TCHAR (err), BufLen);
return buf;
# else
return const_cast <char *> (err);
# endif /* ACE_USES_WCHAR */
# elif defined (__hpux) || defined (VXWORKS)
ACE_OSCALL_RETURN (::strerror(errno), char *, 0);
# elif defined (ACE_WIN32)
static ACE_TCHAR buf[128];
# if defined (ACE_HAS_PHARLAP)
ACE_OS::sprintf (buf, "error code %d", GetLastError());
# else
ACE_TEXT_FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM,
0,
::GetLastError (),
0,
buf,
sizeof buf / sizeof buf[0],
0);
# endif /* ACE_HAS_PHARLAP */
return buf;
# else
ACE_NOTSUP_RETURN (0);
# endif /* ACE_HAS_SVR4_DYNAMIC_LINKING */
}
# if defined (ACE_HAS_CHARPTR_DL)
typedef ACE_TCHAR * ACE_DL_TYPE;
# else
typedef const ACE_TCHAR * ACE_DL_TYPE;
# endif /* ACE_HAS_CHARPTR_DL */
ACE_INLINE ACE_SHLIB_HANDLE
ACE_OS::dlopen (const ACE_TCHAR *fname,
int mode)
{
ACE_OS_TRACE ("ACE_OS::dlopen");
// Get the correct OS type.
ACE_DL_TYPE filename = const_cast<ACE_DL_TYPE> (fname);
# if defined (ACE_HAS_SVR4_DYNAMIC_LINKING)
void *handle;
# if defined (ACE_HAS_SGIDLADD)
ACE_OSCALL
(::sgidladd (ACE_TEXT_ALWAYS_CHAR (filename), mode), void *, 0, handle);
# elif defined (_M_UNIX)
ACE_OSCALL
(::_dlopen (ACE_TEXT_ALWAYS_CHAR (filename), mode), void *, 0, handle);
# else
ACE_OSCALL
(::dlopen (ACE_TEXT_ALWAYS_CHAR (filename), mode), void *, 0, handle);
# endif /* ACE_HAS_SGIDLADD */
# if !defined (ACE_HAS_AUTOMATIC_INIT_FINI)
if (handle != 0)
{
void *ptr;
// Some systems (e.g., SunOS4) do not automatically call _init(), so
// we'll have to call it manually.
ACE_OSCALL (::dlsym (handle, ACE_LIB_TEXT ("_init")), void *, 0, ptr);
if (ptr != 0 && (*((int (*)(void)) ptr)) () == -1) // Call _init hook explicitly.
{
// Close down the handle to prevent leaks.
::dlclose (handle);
return 0;
}
}
# endif /* ACE_HAS_AUTOMATIC_INIT_FINI */
return handle;
# elif defined (ACE_WIN32)
ACE_UNUSED_ARG (mode);
ACE_WIN32CALL_RETURN (ACE_TEXT_LoadLibrary (filename), ACE_SHLIB_HANDLE, 0);
# elif defined (__hpux)
# if defined(__GNUC__) || __cplusplus >= 199707L
ACE_OSCALL_RETURN (::shl_load(filename, mode, 0L), ACE_SHLIB_HANDLE, 0);
# else
ACE_OSCALL_RETURN (::cxxshl_load(filename, mode, 0L), ACE_SHLIB_HANDLE, 0);
# endif /* aC++ vs. Hp C++ */
# elif defined (VXWORKS)
MODULE* handle;
// Open readonly
ACE_HANDLE filehandle = ACE_OS::open (filename,
O_RDONLY,
ACE_DEFAULT_FILE_PERMS);
if (filehandle != ACE_INVALID_HANDLE)
{
ACE_OS::last_error(0);
ACE_OSCALL ( ::loadModule (filehandle, mode ), MODULE *, 0, handle);
int loaderror = ACE_OS::last_error();
ACE_OS::close (filehandle);
if ( (loaderror != 0) && (handle != 0) )
{
// ouch something went wrong most likely unresolved externals
::unldByModuleId ( handle, 0 );
handle = 0;
}
}
else
{
// couldn't open file
handle = 0;
}
return handle;
# else
ACE_UNUSED_ARG (filename);
ACE_UNUSED_ARG (mode);
ACE_NOTSUP_RETURN (0);
# endif /* ACE_HAS_SVR4_DYNAMIC_LINKING */
}
ACE_INLINE void *
ACE_OS::dlsym (ACE_SHLIB_HANDLE handle,
const ACE_TCHAR *sname)
{
ACE_OS_TRACE ("ACE_OS::dlsym");
#if defined (ACE_HAS_DLSYM_SEGFAULT_ON_INVALID_HANDLE)
// Check if the handle is valid before making any calls using it.
if (handle == ACE_SHLIB_INVALID_HANDLE)
return 0;
#endif /* ACE_HAS_DLSYM_SEGFAULT_ON_INVALID_HANDLE */
// Get the correct OS type.
#if defined (ACE_HAS_WINCE)
const wchar_t *symbolname = sname;
#elif defined (ACE_USES_WCHAR)
// WinCE is WCHAR always; other platforms need a char * symbol name
ACE_Wide_To_Ascii w_sname (sname);
char *symbolname = w_sname.char_rep ();
#elif defined (ACE_HAS_CHARPTR_DL)
char *symbolname = const_cast<char *> (sname);
#else
const char *symbolname = sname;
#endif /* ACE_HAS_WINCE */
# if defined (ACE_HAS_SVR4_DYNAMIC_LINKING)
# if defined (ACE_USES_ASM_SYMBOL_IN_DLSYM)
int l = ACE_OS::strlen (symbolname) + 2;
char *asm_symbolname = 0;
ACE_NEW_RETURN (asm_symbolname, char[l], 0);
ACE_OS::strcpy (asm_symbolname, "_") ;
ACE_OS::strcpy (asm_symbolname + 1, symbolname) ;
void *ace_result;
ACE_OSCALL (::dlsym (handle, asm_symbolname), void *, 0, ace_result);
delete [] asm_symbolname;
return ace_result;
# elif defined (_M_UNIX)
ACE_OSCALL_RETURN (::_dlsym (handle, symbolname), void *, 0);
# else
ACE_OSCALL_RETURN (::dlsym (handle, symbolname), void *, 0);
# endif /* ACE_USES_ASM_SYMBOL_IN_DLSYM */
# elif defined (ACE_WIN32)
ACE_WIN32CALL_RETURN (::GetProcAddress (handle, symbolname), void *, 0);
# elif defined (__hpux)
void *value;
int status;
shl_t _handle = handle;
ACE_OSCALL (::shl_findsym(&_handle, symbolname, TYPE_UNDEFINED, &value), int, -1, status);
return status == 0 ? value : 0;
# elif defined (VXWORKS)
// For now we use the VxWorks global symbol table
// which resolves the most recently loaded symbols .. which resolve mostly what we want..
ACE_UNUSED_ARG (handle);
SYM_TYPE symtype;
void *value = 0;
STATUS status;
ACE_OSCALL (::symFindByName(sysSymTbl, symbolname, (char **)&value, &symtype), int, -1, status);
return status == OK ? value : 0;
# else
ACE_UNUSED_ARG (handle);
ACE_UNUSED_ARG (symbolname);
ACE_NOTSUP_RETURN (0);
# endif /* ACE_HAS_SVR4_DYNAMIC_LINKING */
}
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