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Diffstat (limited to 'src/system/Qt3DSDLLManager.cpp')
| -rw-r--r-- | src/system/Qt3DSDLLManager.cpp | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/src/system/Qt3DSDLLManager.cpp b/src/system/Qt3DSDLLManager.cpp new file mode 100644 index 0000000..c6f6d80 --- /dev/null +++ b/src/system/Qt3DSDLLManager.cpp @@ -0,0 +1,220 @@ +/**************************************************************************** +** +** Copyright (C) 1993-2009 NVIDIA Corporation. +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of Qt 3D Studio. +** +** $QT_BEGIN_LICENSE:GPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 or (at your option) any later version +** approved by the KDE Free Qt Foundation. The licenses are as published by +** the Free Software Foundation and appearing in the file LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +//============================================================================== +// Includes +//============================================================================== +#include "SystemPrefix.h" +#include "Qt3DSDLLManager.h" +#include "Qt3DSBasicPluginDLL.h" +#include <QDebug> +#ifdef _LINUXPLATFORM +#include <dlfcn.h> +#endif + +using namespace Q3DStudio; + +//============================================================================== +/** + * Comparator for DLL instances. + * Compares by plugin type and handle + */ +namespace Q3DStudio { +bool operator==(const _SDLLInfo &inInfo1, const _SDLLInfo &inInfo2) +{ + return (inInfo1.m_Type == inInfo2.m_Type) && (inInfo1.m_Handle == inInfo2.m_Handle); +} +} + +//============================================================================== +/** + * Singleton getter + */ +CDLLManager &CDLLManager::GetDLLManager() +{ + static CDLLManager theDLLManager = CDLLManager(); + return theDLLManager; +} + +//============================================================================== +/** + * CTOR + */ +CDLLManager::CDLLManager() +{ +} + +//============================================================================== +/** + * DTOR + */ +CDLLManager::~CDLLManager() +{ +} + +//============================================================================== +/** + * Cleanup + */ +void CDLLManager::Cleanup() +{ + m_LoadedLibraries.Clear(true); +} + +//============================================================================== +/** + * Loads a DLL/shared library given a path to the library plugin and the plugin + * type to expect. + */ +long CDLLManager::LoadLibrary(const char *inLibraryPath, long inPluginType) +{ + long theEmptyIndex = NVARRAY_NOTFOUND; +#ifdef _PCPLATFORM + DLLHANDLE theHandle = ::LoadLibraryA(inLibraryPath); +#endif + +#ifdef _LINUXPLATFORM + DLLHANDLE theHandle = ::dlopen(inLibraryPath, RTLD_NOW); + + if (!theHandle) { + const char *error = ::dlerror(); + qWarning() << "Failed to load shared library, error:" << QStringLiteral("%1, full path: %2").arg(error).arg(inLibraryPath); + } + +#endif + +#ifdef _INTEGRITYPLATFORM + DLLHANDLE theHandle = 0; + qWarning() << "CDLLManager::LoadLibrary handle is zero!"; +#endif + + Q3DStudio_ASSERT(theHandle); + + if (theHandle != NULL) { + SDLLInfo theInfo; + PROC_GetPluginType theProc = + reinterpret_cast<PROC_GetPluginType>(GetProc("GetPluginType", theHandle)); + Q3DStudio_ASSERT(theProc); + + if (theProc) { + theInfo.m_Type = theProc(); + + if (theInfo.m_Type == inPluginType) { + theEmptyIndex = m_LoadedLibraries.GetIndex(theInfo); + theInfo.m_Handle = theHandle; + + if (theEmptyIndex == NVARRAY_NOTFOUND) { + m_LoadedLibraries.Push(theInfo); + theEmptyIndex = m_LoadedLibraries.GetCount() - 1; + } else + m_LoadedLibraries[theEmptyIndex] = theInfo; + } + } + + if (theEmptyIndex == NVARRAY_NOTFOUND) { +#ifdef _PCPLATFORM + ::FreeLibrary(theHandle); +#endif + +#ifdef _LINUXPLATFORM + ::dlclose(theHandle); +#endif + } + } + + return theEmptyIndex; +} + +//============================================================================== +/** + * Unloads a DLL given a handle + */ +void CDLLManager::UnloadLibrary(const long inHandle) +{ + if (inHandle >= 0 && inHandle < m_LoadedLibraries.GetCount()) { +#ifdef _PCPLATFORM + ::FreeLibrary(m_LoadedLibraries[inHandle].m_Handle); +#endif + +#ifdef _LINUXPLATFORM + ::dlclose(m_LoadedLibraries[inHandle].m_Handle); +#endif + + m_LoadedLibraries[inHandle] = SDLLInfo(); + } +} + +//============================================================================== +/** + * Retrieves a DLL proc given the proc name + */ +void *CDLLManager::GetProc(const char *inProcName, long inHandle) +{ + if (inHandle >= 0 && inHandle < m_LoadedLibraries.GetCount()) + return GetProc(inProcName, m_LoadedLibraries[inHandle].m_Handle); + + return NULL; +} + +//============================================================================== +/** + * Retrieves a DLL proc fiven the proc name + */ +void *CDLLManager::GetProc(const char *inProcName, const DLLHANDLE inHandle) +{ +#ifdef _PCPLATFORM +#ifdef QT3DS_VC + return ::GetProcAddress(inHandle, inProcName); +#else + return (void *)(::GetProcAddress(inHandle, inProcName)); +#endif +#endif + +#ifdef _LINUXPLATFORM + return ::dlsym(inHandle, inProcName); +#endif + +#ifdef _INTEGRITYPLATFORM + qWarning() << "CDLLManager::GetProc returns NULL!"; + return NULL; +#endif +} + +//============================================================================== +/** + * Retrieves the plugin type for the DLL + */ +template <typename EEnumType> +EEnumType CDLLManager::GetPluginType(long inHandle) +{ + if (inHandle >= 0 && inHandle < m_LoadedLibraries.GetCount()) + return static_cast<EEnumType>(m_LoadedLibraries[inHandle].m_Type); + + return 0; +} |