X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4fa167e669e4721c1227c992b252ec3d123c0edd..409e6ce4dcd39c6dfe8b77cbd56d451ffe5c731c:/src/mac/corefoundation/utilsexc_cf.cpp?ds=sidebyside diff --git a/src/mac/corefoundation/utilsexc_cf.cpp b/src/mac/corefoundation/utilsexc_cf.cpp index f9f5227660..2d95454fe9 100644 --- a/src/mac/corefoundation/utilsexc_cf.cpp +++ b/src/mac/corefoundation/utilsexc_cf.cpp @@ -17,219 +17,102 @@ #endif //ndef WX_PRECOMP #include "wx/unix/execute.h" #include "wx/stdpaths.h" +#include "wx/app.h" #include "wx/apptrait.h" #include "wx/thread.h" #include "wx/process.h" #include -// Use polling instead of Mach ports, which doesn't work on Intel -// due to task_for_pid security issues. - -// What's a better test for Intel vs PPC? -#ifdef WORDS_BIGENDIAN -#define USE_POLLING 0 -#else -#define USE_POLLING 1 -#endif - -#if USE_POLLING - -#if wxUSE_THREADS -class wxProcessTerminationEventHandler: public wxEvtHandler -{ - public: - wxProcessTerminationEventHandler(wxEndProcessData* data) - { - m_data = data; - Connect(-1, wxEVT_END_PROCESS, wxProcessEventHandler(wxProcessTerminationEventHandler::OnTerminate)); - } - - void OnTerminate(wxProcessEvent& event) - { - Disconnect(-1, wxEVT_END_PROCESS, wxProcessEventHandler(wxProcessTerminationEventHandler::OnTerminate)); - wxHandleProcessTermination(m_data); - delete this; - } - - wxEndProcessData* m_data; -}; - -class wxProcessTerminationThread: public wxThread -{ - public: - wxProcessTerminationThread(wxEndProcessData* data, wxProcessTerminationEventHandler* handler): wxThread(wxTHREAD_DETACHED) - { - m_data = data; - m_handler = handler; - } - - virtual void* Entry(); - - wxProcessTerminationEventHandler* m_handler; - wxEndProcessData* m_data; -}; - -// The problem with this is that we may be examining the -// process e.g. in OnIdle at the point this cleans up the process, -// so we need to delay until it's safe. - -void* wxProcessTerminationThread::Entry() +#include + +/*! + Called due to source signal detected by the CFRunLoop. + This is nearly identical to the wxGTK equivalent. + */ +extern "C" void WXCF_EndProcessDetector(CFSocketRef s, + CFSocketCallBackType WXUNUSED(callbackType), + CFDataRef WXUNUSED(address), + void const *WXUNUSED(data), + void *info) { - while (true) - { - usleep(100); - int status = 0; - int rc = waitpid(abs(m_data->pid), & status, WNOHANG); - if (rc != 0) - { - if ((rc != -1) && WIFEXITED(status)) - m_data->exitcode = WEXITSTATUS(status); - else - m_data->exitcode = -1; - - wxProcessEvent event; - wxPostEvent(m_handler, event); - - break; - } - } - - return NULL; + /* + Either our pipe was closed or the process ended successfully. Either way, + we're done. It's not if waitpid is going to magically succeed when + we get fired again. CFSocketInvalidate closes the fd for us and also + invalidates the run loop source for us which should cause it to + release the CFSocket (thus causing it to be deallocated) and remove + itself from the runloop which should release it and cause it to also + be deallocated. Of course, it's possible the RunLoop hangs onto + one or both of them by retaining/releasing them within its stack + frame. However, that shouldn't be depended on. Assume that s is + deallocated due to the following call. + */ + CFSocketInvalidate(s); + + // Now tell wx that the process has ended. + wxHandleProcessTermination(static_cast(info)); } -int wxAddProcessCallbackForPid(wxEndProcessData *proc_data, int pid) +/*! + Implements the GUI-specific AddProcessCallback() for both wxMac and + wxCocoa using the CFSocket/CFRunLoop API which is available to both. + Takes advantage of the fact that sockets on UNIX are just regular + file descriptors and thus even a non-socket file descriptor can + apparently be used with CFSocket so long as you only tell CFSocket + to do things with it that would be valid for a non-socket fd. + */ +int wxGUIAppTraits::AddProcessCallback(wxEndProcessData *proc_data, int fd) { - if (pid < 1) - return -1; - - wxProcessTerminationEventHandler* handler = new wxProcessTerminationEventHandler(proc_data); - wxProcessTerminationThread* thread = new wxProcessTerminationThread(proc_data, handler); - - if (thread->Create() != wxTHREAD_NO_ERROR) + static int s_last_tag = 0; + CFSocketContext context = + { 0 + , static_cast(proc_data) + , NULL + , NULL + , NULL + }; + CFSocketRef cfSocket = CFSocketCreateWithNative(kCFAllocatorDefault,fd,kCFSocketReadCallBack,&WXCF_EndProcessDetector,&context); + if(cfSocket == NULL) { - wxLogDebug(wxT("Could not create termination detection thread.")); - delete thread; - delete handler; - return -1; + wxLogError(wxT("Failed to create socket for end process detection")); + return 0; } - - thread->Run(); - - return 0; -} -#else // !wxUSE_THREADS -int wxAddProcessCallbackForPid(wxEndProcessData*, int) -{ - wxLogDebug(wxT("Could not create termination detection thread.")); - return -1; -} -#endif // wxUSE_THREADS/!wxUSE_THREADS - -#else // !USE_POLLING - -#include -extern "C" { -#include -} - -void wxMAC_MachPortEndProcessDetect(CFMachPortRef port, void *data) -{ - wxEndProcessData *proc_data = (wxEndProcessData*)data; - wxLogDebug(wxT("Process ended")); - int status = 0; - int rc = waitpid(abs(proc_data->pid), &status, WNOHANG); - if(!rc) + CFRunLoopSourceRef runLoopSource = CFSocketCreateRunLoopSource(kCFAllocatorDefault, cfSocket, /*highest priority:*/0); + if(runLoopSource == NULL) { - wxLogDebug(wxT("Mach port was invalidated, but process hasn't terminated!")); - return; + wxLogError(wxT("Failed to create CFRunLoopSource from CFSocket for end process detection")); + // closes the fd.. we can't really stop it, nor do we necessarily want to. + CFSocketInvalidate(cfSocket); + CFRelease(cfSocket); + return 0; } - if((rc != -1) && WIFEXITED(status)) - proc_data->exitcode = WEXITSTATUS(status); - else - proc_data->exitcode = -1; - wxHandleProcessTermination(proc_data); + // Now that the run loop source has the socket retained and we no longer + // need to refer to it within this method, we can release it. + CFRelease(cfSocket); + + CFRunLoopAddSource(CFRunLoopGetCurrent(), runLoopSource, kCFRunLoopCommonModes); + // Now that the run loop has the source retained we can release it. + CFRelease(runLoopSource); + + /* + Feed wx some bullshit.. we don't use it since CFSocket helpfully passes + itself into our callback and that's enough to be able to + CFSocketInvalidate it which is all we need to do to get everything we + just created to be deallocated. + */ + return ++s_last_tag; } -int wxAddProcessCallbackForPid(wxEndProcessData *proc_data, int pid) -{ - if(pid < 1) - return -1; - kern_return_t kernResult; - mach_port_t taskOfOurProcess; - mach_port_t machPortForProcess; - taskOfOurProcess = mach_task_self(); - if(taskOfOurProcess == MACH_PORT_NULL) - { - wxLogDebug(wxT("No mach_task_self()")); - return -1; - } - wxLogDebug(wxT("pid=%d"),pid); - kernResult = task_for_pid(taskOfOurProcess,pid, &machPortForProcess); - if(kernResult != KERN_SUCCESS) - { - wxLogDebug(wxT("no task_for_pid()")); - // try seeing if it is already dead or something - // FIXME: a better method would be to call the callback function - // from idle time until the process terminates. Of course, how - // likely is it that it will take more than 0.1 seconds for the - // mach terminate event to make its way to the BSD subsystem? - usleep(100); // sleep for 0.1 seconds - wxMAC_MachPortEndProcessDetect(NULL, (void*)proc_data); - return -1; - } - CFMachPortContext termcb_contextinfo; - termcb_contextinfo.version = 0; - termcb_contextinfo.info = (void*)proc_data; - termcb_contextinfo.retain = NULL; - termcb_contextinfo.release = NULL; - termcb_contextinfo.copyDescription = NULL; - CFMachPortRef CFMachPortForProcess; - Boolean ShouldFreePort; - CFMachPortForProcess = CFMachPortCreateWithPort(NULL, machPortForProcess, NULL, &termcb_contextinfo, &ShouldFreePort); - if(!CFMachPortForProcess) - { - wxLogDebug(wxT("No CFMachPortForProcess")); - mach_port_deallocate(taskOfOurProcess, machPortForProcess); - return -1; - } - if(ShouldFreePort) - { - kernResult = mach_port_deallocate(taskOfOurProcess, machPortForProcess); - if(kernResult!=KERN_SUCCESS) - { - wxLogDebug(wxT("Couldn't deallocate mach port")); - return -1; - } - } - CFMachPortSetInvalidationCallBack(CFMachPortForProcess, &wxMAC_MachPortEndProcessDetect); - CFRunLoopSourceRef runloopsource; - runloopsource = CFMachPortCreateRunLoopSource(NULL,CFMachPortForProcess, (CFIndex)0); - if(!runloopsource) - { - wxLogDebug(wxT("Couldn't create runloopsource")); - return -1; - } - - CFRelease(CFMachPortForProcess); - - CFRunLoopAddSource(CFRunLoopGetCurrent(),runloopsource,kCFRunLoopDefaultMode); - CFRelease(runloopsource); - wxLogDebug(wxT("Successfully added notification to the runloop")); - return 0; -} - -#endif // USE_POLLING/!USE_POLLING +///////////////////////////////////////////////////////////////////////////// // NOTE: This doesn't really belong here but this was a handy file to // put it in because it's already compiled for wxCocoa and wxMac GUI lib. -#if wxUSE_GUI - +#if wxUSE_STDPATHS static wxStandardPathsCF gs_stdPaths; wxStandardPathsBase& wxGUIAppTraits::GetStandardPaths() { return gs_stdPaths; } - -#endif // wxUSE_GUI +#endif