//---------------------------------------------------------------------------
// LoadLibrary() - loads the converter DLL and retrieves the entry points; if
// unable to load and initialize the library or if required entry points are
// not exported, throws an exception
// hwnd - handle to the parent window
// libpath - full path to DLL to load
//
void TRtfConverter::LoadLibrary(HWND hwnd, AnsiString libpath)
{
// attempt to load library
HINSTANCE hinst = ::LoadLibrary(libpath.c_str());
if (!hinst) throw Exception("Unable to load library");
// library loaded ok
FLibrary = hinst;
// get entry points for calls
pInitConverter32 = (InitConverter32*) ::GetProcAddress(FLibrary, "InitConverter32");
pUninitConverter = (UninitConverter*) ::GetProcAddress(FLibrary, "UninitConverter");
pIsFormatCorrect32 = (IsFormatCorrect32*) ::GetProcAddress(FLibrary, "IsFormatCorrect32");
pForeignToRtf32 = (ForeignToRtf32*) ::GetProcAddress(FLibrary, "ForeignToRtf32");
pRtfToForeign32 = (RtfToForeign32*) ::GetProcAddress(FLibrary, "RtfToForeign32");
pRegisterApp = (RegisterApp*) ::GetProcAddress(FLibrary, "RegisterApp");
pCchFetchLpszError = (CchFetchLpszError*) ::GetProcAddress(FLibrary, "CchFetchLpszError");
pGetReadNames = (GetReadNames*) ::GetProcAddress(FLibrary, "GetReadNames");
pGetWriteNames = (GetWriteNames*) ::GetProcAddress(FLibrary, "GetWriteNames");
pFRegisterConverter = (FRegisterConverter*) ::GetProcAddress(FLibrary, "FRegisterConverter");
// verify that required entry points are available
if (!pInitConverter32 || !pIsFormatCorrect32 || !pForeignToRtf32) {
UnloadLibrary();
throw Exception("Unable to initialize library (required entry points missing)");
}
// initialize converter - if cannot, unload and return failure
if (!pInitConverter32(hwnd, Application->ExeName.c_str())) {
UnloadLibrary();
throw Exception("Unable to initialize library (initialization failed)");
}
}
bool
Library::Close(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
RootedObject obj(cx);
if (args.thisv().isObject())
obj = &args.thisv().toObject();
if (!obj || !IsLibrary(obj)) {
JS_ReportErrorASCII(cx, "not a library");
return false;
}
if (args.length() != 0) {
JS_ReportErrorASCII(cx, "close doesn't take any arguments");
return false;
}
// delete our internal objects
UnloadLibrary(obj);
JS_SetReservedSlot(obj, SLOT_LIBRARY, PrivateValue(nullptr));
args.rval().setUndefined();
return true;
}
void CDynamicLoading::UnloadAllLibraries() {
for(TDLHandleMap::iterator it = m_tOpenLibs.begin();
it != m_tOpenLibs.end();
++it) {
UnloadLibrary(it->second);
}
}
void OMCFactory::UnloadAllLibs(void)
{
map<string,shared_library>::iterator iter;
for(iter = _modules.begin();iter!=_modules.end();++iter)
{
UnloadLibrary(iter->second);
}
}
void CDynamicLoading::UnloadLibrary(const std::string& str_lib) {
TDLHandleMap::iterator it = m_tOpenLibs.find(str_lib);
if(it != m_tOpenLibs.end()) {
UnloadLibrary(it->second);
}
else {
THROW_ARGOSEXCEPTION("Can't unload library \""
<< str_lib
<< "\": library does not appear to have been loaded.");
}
}
void LibraryList::UnloadLibrary(LibraryView* wrap) {
// Sanity check.
LOG("%s: for %s (ref_count=%d)\n",
__FUNCTION__,
wrap->GetName(),
wrap->ref_count());
if (!wrap->IsSystem() && !wrap->IsCrazy())
return;
if (!wrap->SafeDecrementRef())
return;
// If this is a crazy library, perform manual cleanup first.
if (wrap->IsCrazy()) {
SharedLibrary* lib = wrap->GetCrazy();
// Remove from internal list of crazy libraries.
if (lib->list_next_)
lib->list_next_->list_prev_ = lib->list_prev_;
if (lib->list_prev_)
lib->list_prev_->list_next_ = lib->list_next_;
if (lib == head_)
head_ = lib->list_next_;
// Call JNI_OnUnload, if necessary, then the destructors.
lib->CallJniOnUnload();
lib->CallDestructors();
// Unload the dependencies recursively.
SharedLibrary::DependencyIterator iter(lib);
while (iter.GetNext()) {
LibraryView* dependency = FindKnownLibrary(iter.GetName());
if (dependency)
UnloadLibrary(dependency);
}
// Tell GDB of this removal.
Globals::GetRDebug()->DelEntry(&lib->link_map_);
}
known_libraries_.Remove(wrap);
// Delete the wrapper, which will delete the crazy library, or
// dlclose() the system one.
delete wrap;
}
JSBool
Library::Close(JSContext* cx, unsigned argc, jsval* vp)
{
JSObject* obj = JS_THIS_OBJECT(cx, vp);
if (!obj)
return JS_FALSE;
if (!IsLibrary(obj)) {
JS_ReportError(cx, "not a library");
return JS_FALSE;
}
if (argc != 0) {
JS_ReportError(cx, "close doesn't take any arguments");
return JS_FALSE;
}
// delete our internal objects
UnloadLibrary(obj);
JS_SetReservedSlot(obj, SLOT_LIBRARY, PRIVATE_TO_JSVAL(NULL));
JS_SET_RVAL(cx, vp, JSVAL_VOID);
return JS_TRUE;
}
bool
Library::Close(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
JSObject* obj = JS_THIS_OBJECT(cx, vp);
if (!obj)
return false;
if (!IsLibrary(obj)) {
JS_ReportError(cx, "not a library");
return false;
}
if (args.length() != 0) {
JS_ReportError(cx, "close doesn't take any arguments");
return false;
}
// delete our internal objects
UnloadLibrary(obj);
JS_SetReservedSlot(obj, SLOT_LIBRARY, PrivateValue(nullptr));
args.rval().setUndefined();
return true;
}
void
Library::Finalize(JSFreeOp* fop, JSObject* obj)
{
UnloadLibrary(obj);
}
DLL_LOCAL bool MyoWrapper::LoadLibrary(void)
{
#ifndef TARGET_WINNT
const char *lib_name = "libmyo-client.so";
#else // TARGET_WINNT
const char *lib_name = "myo-client.dll";
#endif // TARGET_WINNT
OFFLOAD_DEBUG_TRACE(2, "Loading MYO library %s ...\n", lib_name);
m_lib_handle = DL_open(lib_name);
if (m_lib_handle == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to load the library. errno = %d\n",
errno);
return false;
}
m_lib_init = (MyoError (*)(void*, void*))
DL_sym(m_lib_handle, "myoiLibInit", MYO_VERSION1);
if (m_lib_init == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoiLibInit");
UnloadLibrary();
return false;
}
m_lib_fini = (void (*)(void))
DL_sym(m_lib_handle, "myoiLibFini", MYO_VERSION1);
if (m_lib_fini == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoiLibFini");
UnloadLibrary();
return false;
}
m_shared_malloc = (void* (*)(size_t))
DL_sym(m_lib_handle, "myoSharedMalloc", MYO_VERSION1);
if (m_shared_malloc == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoSharedMalloc");
UnloadLibrary();
return false;
}
m_shared_free = (void (*)(void*))
DL_sym(m_lib_handle, "myoSharedFree", MYO_VERSION1);
if (m_shared_free == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoSharedFree");
UnloadLibrary();
return false;
}
m_shared_aligned_malloc = (void* (*)(size_t, size_t))
DL_sym(m_lib_handle, "myoSharedAlignedMalloc", MYO_VERSION1);
if (m_shared_aligned_malloc == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoSharedAlignedMalloc");
UnloadLibrary();
return false;
}
m_shared_aligned_free = (void (*)(void*))
DL_sym(m_lib_handle, "myoSharedAlignedFree", MYO_VERSION1);
if (m_shared_aligned_free == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoSharedAlignedFree");
UnloadLibrary();
return false;
}
m_acquire = (MyoError (*)(void))
DL_sym(m_lib_handle, "myoAcquire", MYO_VERSION1);
if (m_acquire == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoAcquire");
UnloadLibrary();
return false;
}
m_release = (MyoError (*)(void))
DL_sym(m_lib_handle, "myoRelease", MYO_VERSION1);
if (m_release == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoRelease");
UnloadLibrary();
return false;
}
m_host_var_table_propagate = (MyoError (*)(void*, int))
DL_sym(m_lib_handle, "myoiHostVarTablePropagate", MYO_VERSION1);
if (m_host_var_table_propagate == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoiHostVarTablePropagate");
UnloadLibrary();
return false;
}
m_host_fptr_table_register = (MyoError (*)(void*, int, int))
DL_sym(m_lib_handle, "myoiHostFptrTableRegister", MYO_VERSION1);
if (m_host_fptr_table_register == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoiHostFptrTableRegister");
UnloadLibrary();
return false;
}
m_remote_thunk_call = (MyoError (*)(void*, void*, int))
DL_sym(m_lib_handle, "myoiRemoteThunkCall", MYO_VERSION1);
if (m_remote_thunk_call == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoiRemoteThunkCall");
UnloadLibrary();
return false;
}
m_remote_call = (MyoiRFuncCallHandle (*)(const char*, void*, int))
DL_sym(m_lib_handle, "myoiRemoteCall", MYO_VERSION1);
if (m_remote_call == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoiRemoteCall");
UnloadLibrary();
return false;
}
m_get_result = (MyoError (*)(MyoiRFuncCallHandle))
DL_sym(m_lib_handle, "myoiGetResult", MYO_VERSION1);
if (m_get_result == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoiGetResult");
UnloadLibrary();
return false;
}
m_arena_create = (MyoError (*)(MyoOwnershipType, int, MyoArena*))
DL_sym(m_lib_handle, "myoArenaCreate", MYO_VERSION1);
if (m_arena_create == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoArenaCreate");
UnloadLibrary();
return false;
}
m_arena_aligned_malloc = (void* (*)(MyoArena, size_t, size_t))
DL_sym(m_lib_handle, "myoArenaAlignedMalloc", MYO_VERSION1);
if (m_arena_aligned_malloc == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoArenaAlignedMalloc");
UnloadLibrary();
return false;
}
m_arena_aligned_free = (void* (*)(MyoArena, void*))
DL_sym(m_lib_handle, "myoArenaAlignedFree", MYO_VERSION1);
if (m_arena_aligned_free == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoArenaAlignedFree");
UnloadLibrary();
return false;
}
m_arena_acquire = (MyoError (*)(MyoArena))
DL_sym(m_lib_handle, "myoArenaAcquire", MYO_VERSION1);
if (m_acquire == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoArenaAcquire");
UnloadLibrary();
return false;
}
m_arena_release = (MyoError (*)(MyoArena))
DL_sym(m_lib_handle, "myoArenaRelease", MYO_VERSION1);
if (m_release == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoArenaRelease");
UnloadLibrary();
return false;
}
// Check for "feature-available" API added in MPSS 3.3.
// Not finding it is not an error.
m_feature_available = (MyoError (*)(int))
DL_sym(m_lib_handle, "myoiSupportsFeature", MYO_VERSION1);
if (m_feature_available == 0) {
OFFLOAD_DEBUG_TRACE(2, "Failed to find %s in MYO library\n",
"myoiSupportsFeature");
}
OFFLOAD_DEBUG_TRACE(2, "The library was successfully loaded\n");
// Create arena if supported
CreateVtableArena();
OFFLOAD_DEBUG_TRACE(3, "Vtable arena created\n");
m_is_available = true;
return true;
}
//---------------------------------------------------------------------------
// ~TRtfConverter() - dtor
// unload the library
//
TRtfConverter::~TRtfConverter()
{
UnloadLibrary();
FSemaphore = false;
}
