2 #include "ace/OS_NS_macros.h"
3 #include "ace/OS_NS_errno.h"
4 #include "ace/OS_NS_fcntl.h"
5 #include "ace/OS_NS_string.h"
6 #include "ace/OS_NS_unistd.h"
7 #include "ace/Default_Constants.h"
8 #include "ace/os_include/os_fcntl.h"
9 #include "ace/os_include/os_string.h"
11 #if defined (ACE_WIN32) && defined (ACE_HAS_PHARLAP)
12 # include "ace/OS_NS_stdio.h"
15 #if defined (ACE_USES_ASM_SYMBOL_IN_DLSYM)
16 # include "ace/OS_Memory.h"
17 # include "ace/OS_NS_string.h"
18 #endif /* ACE_USES_ASM_SYMBOL_IN_DLSYM */
20 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
23 ACE_OS::dlclose (ACE_SHLIB_HANDLE handle)
25 ACE_OS_TRACE ("ACE_OS::dlclose");
26 #if defined (ACE_LACKS_DLCLOSE)
27 ACE_UNUSED_ARG (handle);
29 #elif defined (ACE_HAS_SVR4_DYNAMIC_LINKING)
31 # if !defined (ACE_HAS_AUTOMATIC_INIT_FINI)
32 // SunOS4 does not automatically call _fini()!
35 ACE_OSCALL (::dlsym (handle, ACE_TEXT ("_fini")), void *, 0, ptr);
38 (*((int (*)(void)) ptr)) (); // Call _fini hook explicitly.
39 # endif /* ACE_HAS_AUTOMATIC_INIT_FINI */
40 ACE_OSCALL_RETURN (::dlclose (handle), int, -1);
41 #elif defined (ACE_WIN32)
42 ACE_WIN32CALL_RETURN (ACE_ADAPT_RETVAL (::FreeLibrary (handle), ace_result_), int, -1);
43 #elif defined (__hpux)
44 // HP-UX 10.x and 32-bit 11.00 do not pay attention to the ref count
45 // when unloading a dynamic lib. So, if the ref count is more than
46 // 1, do not unload the lib. This will cause a library loaded more
47 // than once to not be unloaded until the process runs down, but
48 // that's life. It's better than unloading a library that's in use.
49 // So far as I know, there's no way to decrement the refcnt that the
50 // kernel is looking at - the shl_descriptor is a copy of what the
51 // kernel has, not the actual struct. On 64-bit HP-UX using dlopen,
52 // this problem has been fixed.
53 struct shl_descriptor desc;
54 if (shl_gethandle_r (handle, &desc) == -1)
56 if (desc.ref_count > 1)
58 # if defined(__GNUC__) || __cplusplus >= 199707L
59 ACE_OSCALL_RETURN (::shl_unload (handle), int, -1);
61 ACE_OSCALL_RETURN (::cxxshl_unload (handle), int, -1);
62 # endif /* aC++ vs. Hp C++ */
64 ACE_UNUSED_ARG (handle);
65 ACE_NOTSUP_RETURN (-1);
66 #endif /* ACE_HAS_SVR4_DYNAMIC_LINKING */
69 ACE_INLINE ACE_TCHAR *
70 ACE_OS::dlerror (void)
72 ACE_OS_TRACE ("ACE_OS::dlerror");
73 # if defined (ACE_HAS_SVR4_DYNAMIC_LINKING)
75 ACE_OSCALL (::dlerror (), const char *, 0, err);
78 # if defined (ACE_USES_WCHAR)
79 const size_t BufLen = 256;
80 static wchar_t buf[BufLen];
81 ACE_OS::strncpy (buf, ACE_TEXT_CHAR_TO_TCHAR (err), BufLen);
84 return const_cast <char *> (err);
85 # endif /* ACE_USES_WCHAR */
86 # elif defined (__hpux) || defined (ACE_VXWORKS)
87 //FUZZ: disable check_for_lack_ACE_OS
88 ACE_OSCALL_RETURN (::strerror(errno), char *, 0);
89 //FUZZ: enable check_for_lack_ACE_OS
90 # elif defined (ACE_WIN32)
91 static ACE_TCHAR buf[128];
92 # if defined (ACE_HAS_PHARLAP)
93 ACE_OS::sprintf (buf, "error code %d", GetLastError());
95 ACE_TEXT_FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM,
100 sizeof buf / sizeof buf[0],
102 # endif /* ACE_HAS_PHARLAP */
105 ACE_NOTSUP_RETURN (0);
106 # endif /* ACE_HAS_SVR4_DYNAMIC_LINKING */
109 ACE_INLINE ACE_SHLIB_HANDLE
110 ACE_OS::dlopen (const ACE_TCHAR *fname,
113 ACE_OS_TRACE ("ACE_OS::dlopen");
115 # if defined (ACE_HAS_SVR4_DYNAMIC_LINKING)
117 ACE_OSCALL (::dlopen (ACE_TEXT_ALWAYS_CHAR (fname), mode), void *, 0, handle);
118 # if !defined (ACE_HAS_AUTOMATIC_INIT_FINI)
122 // Some systems (e.g., SunOS4) do not automatically call _init(), so
123 // we'll have to call it manually.
125 ACE_OSCALL (::dlsym (handle, ACE_TEXT ("_init")), void *, 0, ptr);
127 if (ptr != 0 && (*((int (*)(void)) ptr)) () == -1) // Call _init hook explicitly.
129 // Close down the handle to prevent leaks.
134 # endif /* ACE_HAS_AUTOMATIC_INIT_FINI */
136 # elif defined (ACE_WIN32)
137 ACE_UNUSED_ARG (mode);
139 ACE_WIN32CALL_RETURN (ACE_TEXT_LoadLibrary (fname), ACE_SHLIB_HANDLE, 0);
140 # elif defined (__hpux)
142 # if defined(__GNUC__) || __cplusplus >= 199707L
143 ACE_OSCALL_RETURN (::shl_load(fname, mode, 0L), ACE_SHLIB_HANDLE, 0);
145 ACE_OSCALL_RETURN (::cxxshl_load(fname, mode, 0L), ACE_SHLIB_HANDLE, 0);
146 # endif /* aC++ vs. Hp C++ */
147 # elif defined (ACE_VXWORKS) && !defined (__RTP__)
148 ACE_UNUSED_ARG (mode);
151 ACE_HANDLE filehandle = ACE_OS::open (fname,
153 ACE_DEFAULT_FILE_PERMS);
155 if (filehandle != ACE_INVALID_HANDLE)
157 ACE_OS::last_error(0);
158 ACE_OSCALL ( ::loadModule (filehandle, LOAD_GLOBAL_SYMBOLS|LOAD_COMMON_MATCH_ALL ), MODULE *, 0, handle);
159 int loaderror = ACE_OS::last_error();
160 ACE_OS::close (filehandle);
162 if ( (loaderror != 0) && (handle != 0) )
164 // ouch something went wrong most likely unresolved externals
166 ::unldByModuleId ( handle, 0 );
172 // couldn't open file
177 ACE_UNUSED_ARG (fname);
178 ACE_UNUSED_ARG (mode);
179 ACE_NOTSUP_RETURN (0);
180 # endif /* ACE_HAS_SVR4_DYNAMIC_LINKING */
184 ACE_OS::dlsym (ACE_SHLIB_HANDLE handle,
185 const ACE_TCHAR *sname)
187 ACE_OS_TRACE ("ACE_OS::dlsym");
189 #if defined (ACE_HAS_DLSYM_SEGFAULT_ON_INVALID_HANDLE)
190 // Check if the handle is valid before making any calls using it.
191 if (handle == ACE_SHLIB_INVALID_HANDLE)
193 #endif /* ACE_HAS_DLSYM_SEGFAULT_ON_INVALID_HANDLE */
195 // Get the correct OS type.
196 #if defined (ACE_HAS_WINCE)
197 // CE (at least thru Pocket PC 2003) offers GetProcAddressW, not ...A, so
198 // we always need a wide-char string.
199 const wchar_t *symbolname = 0;
200 # if defined (ACE_USES_WCHAR)
203 ACE_Ascii_To_Wide sname_xlate (sname);
204 symbolname = sname_xlate.wchar_rep ();
205 # endif /* ACE_USES_WCHAR */
206 #elif defined (ACE_USES_WCHAR)
207 // WinCE is WCHAR always; other platforms need a char * symbol name
208 ACE_Wide_To_Ascii w_sname (sname);
209 char *symbolname = w_sname.char_rep ();
210 #elif defined (ACE_VXWORKS)
211 char *symbolname = const_cast<char *> (sname);
213 const char *symbolname = sname;
214 #endif /* ACE_HAS_WINCE */
216 # if defined (ACE_HAS_SVR4_DYNAMIC_LINKING)
218 # if defined (ACE_USES_ASM_SYMBOL_IN_DLSYM)
219 int l = ACE_OS::strlen (symbolname) + 2;
220 char *asm_symbolname = 0;
221 ACE_NEW_RETURN (asm_symbolname, char[l], 0);
222 ACE_OS::strcpy (asm_symbolname, "_") ;
223 ACE_OS::strcpy (asm_symbolname + 1, symbolname) ;
225 ACE_OSCALL (::dlsym (handle, asm_symbolname), void *, 0, ace_result);
226 delete [] asm_symbolname;
229 ACE_OSCALL_RETURN (::dlsym (handle, symbolname), void *, 0);
230 # endif /* ACE_USES_ASM_SYMBOL_IN_DLSYM */
232 # elif defined (ACE_WIN32)
234 ACE_WIN32CALL_RETURN (::GetProcAddress (handle, symbolname), void *, 0);
236 # elif defined (__hpux)
240 shl_t _handle = handle;
241 ACE_OSCALL (::shl_findsym(&_handle, symbolname, TYPE_UNDEFINED, &value), int, -1, status);
242 return status == 0 ? value : 0;
244 # elif defined (ACE_VXWORKS) && !defined (__RTP__)
246 // For now we use the VxWorks global symbol table
247 // which resolves the most recently loaded symbols, which resolve
248 // mostly what we want..
249 ACE_UNUSED_ARG (handle);
250 #if (ACE_VXWORKS < 0x690)
254 ACE_OSCALL (::symFindByName(sysSymTbl, symbolname, &value, &symtype), int, -1, status);
256 return status == OK ? reinterpret_cast <void*>(value) : 0;
260 SYMBOL_DESC symbolDesc; /* symFind() descriptor */
261 ACE_OS::memset (&symbolDesc, 0, sizeof (SYMBOL_DESC));
262 symbolDesc.mask = SYM_FIND_BY_NAME;
263 symbolDesc.name = symbolname;
265 ACE_OSCALL (::symFind(sysSymTbl, &symbolDesc), int, -1, status);
267 return status == OK ? reinterpret_cast <void*>(symbolDesc.value) : 0;
268 #endif /* (ACE_VXWORKS < 0x690) */
272 ACE_UNUSED_ARG (handle);
273 ACE_UNUSED_ARG (symbolname);
274 ACE_NOTSUP_RETURN (0);
276 # endif /* ACE_HAS_SVR4_DYNAMIC_LINKING */
279 ACE_END_VERSIONED_NAMESPACE_DECL