/**************************************************************************** ** $Id$ ** ** Implementation of QLibraryPrivate class ** ** Created : 000101 ** ** Copyright (C) 2000-2002 Trolltech AS. All rights reserved. ** ** This file is part of the tools module of the Qt GUI Toolkit. ** ** This file may be distributed under the terms of the Q Public License ** as defined by Trolltech AS of Norway and appearing in the file ** LICENSE.QPL included in the packaging of this file. ** ** This file may be distributed and/or modified under the terms of the ** GNU General Public License version 2 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. ** ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition ** licenses may use this file in accordance with the Qt Commercial License ** Agreement provided with the Software. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for ** information about Qt Commercial License Agreements. ** See http://www.trolltech.com/qpl/ for QPL licensing information. ** See http://www.trolltech.com/gpl/ for GPL licensing information. ** ** Contact info@trolltech.com if any conditions of this licensing are ** not clear to you. ** **********************************************************************/ #include "qplatformdefs.h" #include "private/qlibrary_p.h" #ifndef QT_NO_LIBRARY #if defined(QT_AOUT_UNDERSCORE) #include <string.h> #endif /* The platform dependent implementations of - loadLibrary - freeLibrary - resolveSymbol It's not too hard to guess what the functions do. */ #if defined(Q_OS_MAC) bool QLibraryPrivate::loadLibrary() { return FALSE; } bool QLibraryPrivate::freeLibrary() { return FALSE; } void* QLibraryPrivate::resolveSymbol( const char* ) { return 0; } #elif defined(QT_HPUX_LD) // for HP-UX < 11.x and 32 bit bool QLibraryPrivate::loadLibrary() { if ( pHnd ) return TRUE; QString filename = library->library(); pHnd = (void*)shl_load( filename.latin1(), BIND_DEFERRED | BIND_NONFATAL | DYNAMIC_PATH, 0 ); #if defined(QT_DEBUG) || defined(QT_DEBUG_COMPONENT) if ( !pHnd ) qWarning( "%s: failed to load library!", filename.latin1() ); #endif return pHnd != 0; } bool QLibraryPrivate::freeLibrary() { if ( !pHnd ) return TRUE; if ( shl_unload( (shl_t)pHnd ) ) { #if defined(QT_DEBUG) || defined(QT_DEBUG_COMPONENT) QString filename = library->library(); qWarning( "%s: Failed to unload library!", filename.latin1() ); #endif return FALSE; } pHnd = 0; return TRUE; } void* QLibraryPrivate::resolveSymbol( const char* symbol ) { if ( !pHnd ) return 0; void* address = 0; if ( shl_findsym( (shl_t*)&pHnd, symbol, TYPE_UNDEFINED, &address ) < 0 ) { #if defined(QT_DEBUG_COMPONENT) QString filename = library->library(); qWarning( "%s: couldn't resolve symbol \"%s\"", filename.latin1(), symbol ); #endif } return address; } #else // POSIX #include <dlfcn.h> bool QLibraryPrivate::loadLibrary() { if ( pHnd ) return TRUE; QString filename = library->library(); pHnd = dlopen( filename.latin1(), RTLD_LAZY ); #if defined(QT_DEBUG) || defined(QT_DEBUG_COMPONENT) if ( !pHnd ) qWarning( "%s", dlerror() ); #endif return pHnd != 0; } bool QLibraryPrivate::freeLibrary() { if ( !pHnd ) return TRUE; if ( dlclose( pHnd ) ) { #if defined(QT_DEBUG) || defined(QT_DEBUG_COMPONENT) qWarning( "%s", dlerror() ); #endif return FALSE; } pHnd = 0; return TRUE; } void* QLibraryPrivate::resolveSymbol( const char* symbol ) { if ( !pHnd ) return 0; #if defined(QT_AOUT_UNDERSCORE) // older a.out systems add an underscore in front of symbols char* undrscr_symbol = new char[strlen(symbol)+2]; undrscr_symbol[0] = '_'; strcpy(undrscr_symbol+1, symbol); void* address = dlsym( pHnd, undrscr_symbol ); delete [] undrscr_symbol; #else void* address = dlsym( pHnd, symbol ); #endif #if defined(QT_DEBUG_COMPONENT) const char* error = dlerror(); if ( error ) qWarning( "%s", error ); #endif return address; } #endif // POSIX #endif