X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c594325333f3e154ee51edd918ad9cb0582203a7..8dba8632c5bcd64724e2e9e2d40e295555a0cb86:/wxPython/src/helpers.cpp diff --git a/wxPython/src/helpers.cpp b/wxPython/src/helpers.cpp index 7b29004df3..b7c8510f85 100644 --- a/wxPython/src/helpers.cpp +++ b/wxPython/src/helpers.cpp @@ -18,11 +18,8 @@ #ifdef __WXMSW__ #include -#undef FindWindow -#undef GetCharWidth -#undef LoadAccelerators -#undef GetClassInfo -#undef GetClassName +#include +#include #endif #ifdef __WXGTK__ @@ -32,6 +29,33 @@ #endif +//---------------------------------------------------------------------- + + +int WXDLLEXPORT wxEntryStart( int argc, char** argv ); +int WXDLLEXPORT wxEntryInitGui(); +void WXDLLEXPORT wxEntryCleanup(); + +wxPyApp* wxPythonApp = NULL; // Global instance of application object + + +#ifdef WXP_WITH_THREAD +struct wxPyThreadState { + unsigned long tid; + PyThreadState* tstate; + + wxPyThreadState(unsigned long _tid=0, PyThreadState* _tstate=NULL) + : tid(_tid), tstate(_tstate) {} +}; + +#include +WX_DECLARE_OBJARRAY(wxPyThreadState, wxPyThreadStateArray); +#include +WX_DEFINE_OBJARRAY(wxPyThreadStateArray); + +wxPyThreadStateArray* wxPyTStates = NULL; +wxMutex* wxPyTMutex = NULL; +#endif #ifdef __WXMSW__ // If building for win32... @@ -51,11 +75,9 @@ BOOL WINAPI DllMain( #endif //---------------------------------------------------------------------- -// Class for implementing the wxp main application shell. +// Classes for implementing the wxp main application shell. //---------------------------------------------------------------------- -wxPyApp *wxPythonApp = NULL; // Global instance of application object - wxPyApp::wxPyApp() { // printf("**** ctor\n"); @@ -67,43 +89,32 @@ wxPyApp::~wxPyApp() { // This one isn't acutally called... See __wxStart() -bool wxPyApp::OnInit(void) { +bool wxPyApp::OnInit() { return FALSE; } -int wxPyApp::MainLoop(void) { + +int wxPyApp::MainLoop() { int retval = 0; DeletePendingObjects(); + bool initialized = wxTopLevelWindows.GetCount() != 0; #ifdef __WXGTK__ - m_initialized = wxTopLevelWindows.GetCount() != 0; + m_initialized = initialized; #endif - if (Initialized()) { + if (initialized) { retval = wxApp::MainLoop(); - wxPythonApp->OnExit(); + OnExit(); } return retval; } + //--------------------------------------------------------------------- //---------------------------------------------------------------------- -#ifdef __WXMSW__ -#include "wx/msw/msvcrt.h" -#endif - - -int WXDLLEXPORT wxEntryStart( int argc, char** argv ); -int WXDLLEXPORT wxEntryInitGui(); -void WXDLLEXPORT wxEntryCleanup(); - - -#ifdef WXP_WITH_THREAD -PyInterpreterState* wxPyInterpreter = NULL; -#endif - // This is where we pick up the first part of the wxEntry functionality... // The rest is in __wxStart and __wxCleanup. This function is called when @@ -112,12 +123,13 @@ void __wxPreStart() { #ifdef __WXMSW__ -// wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF); + wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF); #endif #ifdef WXP_WITH_THREAD PyEval_InitThreads(); - wxPyInterpreter = PyThreadState_Get()->interp; + wxPyTStates = new wxPyThreadStateArray; + wxPyTMutex = new wxMutex; #endif // Bail out if there is already windows created. This means that the @@ -205,8 +217,14 @@ PyObject* __wxStart(PyObject* /* self */, PyObject* args) return Py_None; } + void __wxCleanup() { wxEntryCleanup(); + delete wxPyTMutex; + wxPyTMutex = NULL; + wxPyTStates->Empty(); + delete wxPyTStates; + wxPyTStates = NULL; } @@ -265,7 +283,6 @@ PyObject* __wxSetDictionary(PyObject* /* self */, PyObject* args) void wxPyPtrTypeMap_Add(const char* commonName, const char* ptrName) { if (! wxPyPtrTypeMap) wxPyPtrTypeMap = PyDict_New(); - PyDict_SetItemString(wxPyPtrTypeMap, (char*)commonName, PyString_FromString((char*)ptrName)); @@ -404,7 +421,7 @@ PyObject* wxPyConstructObject(void* ptr, char buff[64]; // should always be big enough... sprintf(buff, "%sPtr", className); - wxASSERT_MSG(wxPython_dict, "wxPython_dict is not set yet!!"); + wxASSERT_MSG(wxPython_dict, "wxPython_dict is not set yet!!"); PyObject* classobj = PyDict_GetItemString(wxPython_dict, buff); if (! classobj) { @@ -421,30 +438,102 @@ PyObject* wxPyConstructObject(void* ptr, //--------------------------------------------------------------------------- - -wxPyTState* wxPyBeginBlockThreads() { - wxPyTState* state = NULL; +// TODO: This should really be wxThread::GetCurrentId(), and I will do so +// after I make a quick 2.3.2.1 release. #ifdef WXP_WITH_THREAD - if (1) { // Can I check if I've already got the lock? - state = new wxPyTState; - PyEval_AcquireLock(); - state->newState = PyThreadState_New(wxPyInterpreter); - state->prevState = PyThreadState_Swap(state->newState); +#ifdef __WXGTK__ // does wxGTK always use pthreads? +#include +#include +#endif +inline +unsigned long wxPyGetCurrentThreadId() { +#ifdef __WXMSW__ + return (unsigned long)::GetCurrentThreadId(); +#endif +#ifdef __WXGTK__ // does wxGTK always use pthreads? + return (unsigned long)pthread_self(); +#endif +#ifdef __WXMAC__ +#error Fix this! +#endif +} + + + +static +PyThreadState* wxPyGetThreadState() { + unsigned long ctid = wxPyGetCurrentThreadId(); + PyThreadState* tstate = NULL; + + wxPyTMutex->Lock(); + for(size_t i=0; i < wxPyTStates->GetCount(); i++) { + wxPyThreadState& info = wxPyTStates->Item(i); + if (info.tid == ctid) { + tstate = info.tstate; + break; + } + } + wxPyTMutex->Unlock(); + wxASSERT_MSG(tstate, "PyThreadState should not be NULL!"); + return tstate; +} + +static +void wxPySaveThreadState(PyThreadState* tstate) { + unsigned long ctid = wxPyGetCurrentThreadId(); + wxPyTMutex->Lock(); + for(size_t i=0; i < wxPyTStates->GetCount(); i++) { + wxPyThreadState& info = wxPyTStates->Item(i); + if (info.tid == ctid) { + info.tstate = tstate; + wxPyTMutex->Unlock(); + return; + } } + // not found, so add it... + wxPyTStates->Add(new wxPyThreadState(ctid, tstate)); + wxPyTMutex->Unlock(); +} + +#endif + + +// Calls from Python to wxWindows code are wrapped in calls to these +// functions: + +PyThreadState* wxPyBeginAllowThreads() { +#ifdef WXP_WITH_THREAD + PyThreadState* saved = PyEval_SaveThread(); // Py_BEGIN_ALLOW_THREADS; + wxPySaveThreadState(saved); + return saved; +#else + return NULL; #endif - return state; } +void wxPyEndAllowThreads(PyThreadState* saved) { +#ifdef WXP_WITH_THREAD + PyEval_RestoreThread(saved); // Py_END_ALLOW_THREADS; +#endif +} -void wxPyEndBlockThreads(wxPyTState* state) { + + +// Calls from wxWindows back to Python code, or even any PyObject +// manipulations, PyDECREF's and etc. are wrapped in calls to these functions: + +void wxPyBeginBlockThreads() { #ifdef WXP_WITH_THREAD - if (state) { - PyThreadState_Swap(state->prevState); - PyThreadState_Clear(state->newState); - PyEval_ReleaseLock(); - PyThreadState_Delete(state->newState); - delete state; - } + PyThreadState* tstate = wxPyGetThreadState(); + PyEval_RestoreThread(tstate); +#endif +} + + +void wxPyEndBlockThreads() { +#ifdef WXP_WITH_THREAD + PyThreadState* tstate = PyEval_SaveThread(); + // Is there any need to save it again? #endif } @@ -464,9 +553,9 @@ wxPyCallback::wxPyCallback(const wxPyCallback& other) { } wxPyCallback::~wxPyCallback() { - wxPyTState* state = wxPyBeginBlockThreads(); + wxPyBeginBlockThreads(); Py_DECREF(m_func); - wxPyEndBlockThreads(state); + wxPyEndBlockThreads(); } @@ -480,7 +569,7 @@ void wxPyCallback::EventThunker(wxEvent& event) { PyObject* tuple; - wxPyTState* state = wxPyBeginBlockThreads(); + wxPyBeginBlockThreads(); wxString className = event.GetClassInfo()->GetClassName(); if (className == "wxPyEvent") @@ -500,7 +589,7 @@ void wxPyCallback::EventThunker(wxEvent& event) { } else { PyErr_Print(); } - wxPyEndBlockThreads(state); + wxPyEndBlockThreads(); } @@ -528,20 +617,101 @@ void wxPyCallbackHelper::setSelf(PyObject* self, PyObject* klass, int incref) { } -// If the object (m_self) has an attibute of the given name, and if that -// attribute is a method, and if that method's class is not from a base class, -// then we'll save a pointer to the method so callCallback can call it. +#if PYTHON_API_VERSION >= 1011 + +// Prior to Python 2.2 PyMethod_GetClass returned the class object +// in which the method was defined. Starting with 2.2 it returns +// "class that asked for the method" which seems totally bogus to me +// but apprently if fixes some obscure problem waiting to happen in +// Python. Since the API was not documented Guido and the gang felt +// safe in changing it. Needless to say that totally screwed up the +// logic below in wxPyCallbackHelper::findCallback, hence this icky +// code to find the class where the method is actuallt defined... + +static +PyObject* PyFindClassWithAttr(PyObject *klass, PyObject *name) +{ + int i, n; + + if (PyType_Check(klass)) { // new style classes + // This code is borrowed/adapted from _PyType_Lookup in typeobject.c + // (TODO: This part is not tested yet, so I'm not sure it is correct...) + PyTypeObject* type = (PyTypeObject*)klass; + PyObject *mro, *res, *base, *dict; + /* Look in tp_dict of types in MRO */ + mro = type->tp_mro; + assert(PyTuple_Check(mro)); + n = PyTuple_GET_SIZE(mro); + for (i = 0; i < n; i++) { + base = PyTuple_GET_ITEM(mro, i); + if (PyClass_Check(base)) + dict = ((PyClassObject *)base)->cl_dict; + else { + assert(PyType_Check(base)); + dict = ((PyTypeObject *)base)->tp_dict; + } + assert(dict && PyDict_Check(dict)); + res = PyDict_GetItem(dict, name); + if (res != NULL) + return base; + } + return NULL; + } + + else if (PyClass_Check(klass)) { // old style classes + // This code is borrowed/adapted from class_lookup in classobject.c + PyClassObject* cp = (PyClassObject*)klass; + PyObject *value = PyDict_GetItem(cp->cl_dict, name); + if (value != NULL) { + return (PyObject*)cp; + } + n = PyTuple_Size(cp->cl_bases); + for (i = 0; i < n; i++) { + PyObject* base = PyTuple_GetItem(cp->cl_bases, i); + PyObject *v = PyFindClassWithAttr(base, name); + if (v != NULL) + return v; + } + return NULL; + } +} +#endif + + +static +PyObject* PyMethod_GetDefiningClass(PyObject* method, const char* name) +{ + PyObject* mgc = PyMethod_GET_CLASS(method); + +#if PYTHON_API_VERSION <= 1010 // prior to Python 2.2, the easy way + return mgc; +#else // 2.2 and after, the hard way... + + PyObject* nameo = PyString_FromString(name); + PyObject* klass = PyFindClassWithAttr(mgc, nameo); + Py_DECREF(nameo); + return klass; +#endif +} + + + bool wxPyCallbackHelper::findCallback(const char* name) const { wxPyCallbackHelper* self = (wxPyCallbackHelper*)this; // cast away const self->m_lastFound = NULL; + + // If the object (m_self) has an attibute of the given name... if (m_self && PyObject_HasAttrString(m_self, (char*)name)) { - PyObject* method; + PyObject *method, *klass; method = PyObject_GetAttrString(m_self, (char*)name); + // ...and if that attribute is a method, and if that method's class is + // not from a base class... if (PyMethod_Check(method) && - ((PyMethod_GET_CLASS(method) == m_class) || - PyClass_IsSubclass(PyMethod_GET_CLASS(method), m_class))) { + (klass = PyMethod_GetDefiningClass(method, (char*)name)) != NULL && + ((klass == m_class) || PyClass_IsSubclass(klass, m_class))) { + // ...then we'll save a pointer to the method so callCallback can call it. self->m_lastFound = method; } else { @@ -604,10 +774,10 @@ PyObject* wxPyCBH_callCallbackObj(const wxPyCallbackHelper& cbh, PyObject* argTu void wxPyCBH_delete(wxPyCallbackHelper* cbh) { if (cbh->m_incRef) { - wxPyTState* state = wxPyBeginBlockThreads(); + wxPyBeginBlockThreads(); Py_XDECREF(cbh->m_self); Py_XDECREF(cbh->m_class); - wxPyEndBlockThreads(state); + wxPyEndBlockThreads(); } } @@ -625,14 +795,14 @@ wxPyEvtSelfRef::wxPyEvtSelfRef() { } wxPyEvtSelfRef::~wxPyEvtSelfRef() { - wxPyTState* state = wxPyBeginBlockThreads(); + wxPyBeginBlockThreads(); if (m_cloned) Py_DECREF(m_self); - wxPyEndBlockThreads(state); + wxPyEndBlockThreads(); } void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) { - wxPyTState* state = wxPyBeginBlockThreads(); + wxPyBeginBlockThreads(); if (m_cloned) Py_DECREF(m_self); m_self = self; @@ -640,7 +810,7 @@ void wxPyEvtSelfRef::SetSelf(PyObject* self, bool clone) { Py_INCREF(m_self); m_cloned = TRUE; } - wxPyEndBlockThreads(state); + wxPyEndBlockThreads(); } PyObject* wxPyEvtSelfRef::GetSelf() const { @@ -697,9 +867,9 @@ wxPyTimer::wxPyTimer(PyObject* callback) { } wxPyTimer::~wxPyTimer() { - wxPyTState* state = wxPyBeginBlockThreads(); + wxPyBeginBlockThreads(); Py_DECREF(func); - wxPyEndBlockThreads(state); + wxPyEndBlockThreads(); } void wxPyTimer::Notify() { @@ -707,7 +877,7 @@ void wxPyTimer::Notify() { wxTimer::Notify(); } else { - wxPyTState* state = wxPyBeginBlockThreads(); + wxPyBeginBlockThreads(); PyObject* result; PyObject* args = Py_BuildValue("()"); @@ -721,7 +891,7 @@ void wxPyTimer::Notify() { PyErr_Print(); } - wxPyEndBlockThreads(state); + wxPyEndBlockThreads(); } } @@ -737,7 +907,7 @@ PyObject* wxPy_ConvertList(wxListBase* list, const char* className) { wxObject* wxObj; wxNode* node = list->First(); - wxPyTState* state = wxPyBeginBlockThreads(); + wxPyBeginBlockThreads(); pyList = PyList_New(0); while (node) { wxObj = node->Data(); @@ -745,7 +915,7 @@ PyObject* wxPy_ConvertList(wxListBase* list, const char* className) { PyList_Append(pyList, pyObj); node = node->Next(); } - wxPyEndBlockThreads(state); + wxPyEndBlockThreads(); return pyList; } @@ -1212,15 +1382,15 @@ bool wxPoint_helper(PyObject* source, wxPoint** obj) { if (PySequence_Check(source) && PySequence_Length(source) == 2) { PyObject* o1 = PySequence_GetItem(source, 0); PyObject* o2 = PySequence_GetItem(source, 1); - // This should really check for integers, not numbers -- but that would break code. - if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) { - Py_DECREF(o1); - Py_DECREF(o2); - goto error; - } - **obj = wxPoint(PyInt_AsLong(o1), PyInt_AsLong(o2)); - Py_DECREF(o1); - Py_DECREF(o2); + // This should really check for integers, not numbers -- but that would break code. + if (!PyNumber_Check(o1) || !PyNumber_Check(o2)) { + Py_DECREF(o1); + Py_DECREF(o2); + goto error; + } + **obj = wxPoint(PyInt_AsLong(o1), PyInt_AsLong(o2)); + Py_DECREF(o1); + Py_DECREF(o2); return TRUE; } error: