diff options
Diffstat (limited to 'ace/DLL.cpp')
| -rw-r--r-- | ace/DLL.cpp | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/ace/DLL.cpp b/ace/DLL.cpp deleted file mode 100644 index 4e3e1463a99..00000000000 --- a/ace/DLL.cpp +++ /dev/null @@ -1,164 +0,0 @@ -// DLL.cpp -// $Id$ - -#include "ace/DLL.h" - -#include "ace/Log_Msg.h" -#include "ace/ACE.h" - -ACE_RCSID(ace, DLL, "$Id$") - -// Default constructor. Also, by default, the object will be closed -// before it is destroyed. - -ACE_DLL::ACE_DLL (int close_on_destruction) - : handle_ (ACE_SHLIB_INVALID_HANDLE), - close_on_destruction_ (close_on_destruction) -{ -} - -// If the library name and the opening mode are specified than on -// object creation the library is implicitly opened. - -ACE_DLL::ACE_DLL (const ACE_TCHAR *dll_name, - int open_mode, - int close_on_destruction) - : handle_ (ACE_OS::dlopen (dll_name, - open_mode)), - close_on_destruction_ (close_on_destruction) -{ - if (this->handle_ == ACE_SHLIB_INVALID_HANDLE) - ACE_ERROR ((LM_ERROR, - ACE_TEXT ("%s\n"), - this->error ())); -} - -// The library is closed before the class gets destroyed depending on -// the close_on_destruction value specified which is stored in -// close_on_destruction_. - -ACE_DLL::~ACE_DLL (void) -{ - // CLose the library only if it hasn't been already. - this->close (); -} - -// This method opens the library based on the mode specified using the -// ACE_SHLIB_HANDLE which is obtained on making the ACE_OS::dlopen call. -// The default mode is: -// RTLD_LAZY Only references to data symbols are relocate when the -// object is first loaded. -// The other modes include: -// RTLD_NOW All necessary relocations are performed when the -// object is first loaded. -// RTLD_GLOBAL The object symbols are made available for the -// relocation processing of any other object. - -int -ACE_DLL::open (const ACE_TCHAR *dll_filename, - int open_mode, - int close_on_destruction) -{ - // This check is necessary as the library could be opened more than - // once without closing it which would cause handle memory leaks. - this->close (); - - // Reset the flag - this->close_on_destruction_ = close_on_destruction; - - // Find out where the library is - ACE_TCHAR dll_pathname[MAXPATHLEN + 1]; - - // Transform the pathname into the appropriate dynamic link library - // by searching the ACE_LD_SEARCH_PATH. - int result = ACE::ldfind (dll_filename, - dll_pathname, - (sizeof dll_pathname / sizeof (ACE_TCHAR))); - // Check for errors - if (result != 0) - return result; - - // The ACE_SHLIB_HANDLE object is obtained. - this->handle_ = ACE_OS::dlopen (dll_pathname, - open_mode); - - if (this->handle_ == ACE_SHLIB_INVALID_HANDLE) - ACE_ERROR_RETURN ((LM_ERROR, - ACE_TEXT ("%s\n"), this->error ()), - -1); - return 0; -} - -// The symbol refernce of the name specified is obtained. - -void * -ACE_DLL::symbol (const ACE_TCHAR *sym_name) -{ - return ACE_OS::dlsym (this->handle_, sym_name); -} - -// The library is closed using the ACE_SHLIB_HANDLE obejct. i.e. The -// shared object is now disassociated form the current process. - -int -ACE_DLL::close (void) -{ - int retval = 0; - - // The handle is checked to see whether the library is closed - // already and the <close_on_destruction_> flag is specified. If - // not, it is closed and the handle is made invalid to indicate that - // it's now closed. - if (this->close_on_destruction_ != 0 && - this->handle_ != ACE_SHLIB_INVALID_HANDLE) - { - retval = ACE_OS::dlclose (this->handle_); - } - - this->handle_ = ACE_SHLIB_INVALID_HANDLE; - return retval; -} - -// This method is used on error in an library operation. - -ACE_TCHAR * -ACE_DLL::error (void) -{ - return ACE_OS::dlerror (); -} - -// Return the handle to the user either temporarily or forever, thus -// orphaning it. If 0 means the user wants the handle forever and if 1 -// means the user temporarily wants to take the handle. - -ACE_SHLIB_HANDLE -ACE_DLL::get_handle (int become_owner) -{ - // Since the caller is becoming the owner of the handle we lose - // rights to close it on destruction. The new controller has to do - // it explicitly. - if (become_owner) - this->close_on_destruction_ = 0; - - // Return the handle requested by the user. - return this->handle_; -} - -// Set the handle for the DLL. By default, the object will be closed -// before it is destroyed. - -int -ACE_DLL::set_handle (ACE_SHLIB_HANDLE handle, - int close_on_destruction) -{ - // Close the handle in use before accepting the next one. - if (this->close () == -1) - ACE_ERROR_RETURN ((LM_ERROR, - ACE_TEXT ("%s\n"), this->error ()), - -1); - - this->handle_ = handle; - this->close_on_destruction_ = close_on_destruction; - - return 0; -} |