-// Use polling instead of Mach ports, which doesn't work on Intel
-// due to task_for_pid security issues.
-
-// http://developer.apple.com/technotes/tn/tn2050.html
-
-// 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);
-
- // NOTE: We don't use this to delay destruction until the next idle run but rather to
- // avoid killing ourselves while our caller (which is our wxEvtHandler superclass
- // ProcessPendingEvents) still needs our m_eventsLocker to be valid.
- // Since we're in the GUI library we can guarantee that ScheduleForDestroy is using
- // the GUI implementation which delays destruction and not the base implementation
- // which does it immediately.
- wxTheApp->GetTraits()->ScheduleForDestroy(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()
-{
- while (true)
- {
- usleep(100);
- int status = 0;
- int rc = waitpid(abs(m_data->pid), & status, 0);
- 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;
-}
-
-int wxAddProcessCallbackForPid(wxEndProcessData *proc_data, int pid)
-{
- if (pid < 1)
- return -1;
-
- wxProcessTerminationEventHandler* handler = new wxProcessTerminationEventHandler(proc_data);
- wxProcessTerminationThread* thread = new wxProcessTerminationThread(proc_data, handler);
-
- if (thread->Create() != wxTHREAD_NO_ERROR)
- {
- wxLogDebug(wxT("Could not create termination detection thread."));
- delete thread;
- delete handler;
- return -1;
- }
-
- 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 <CoreFoundation/CFMachPort.h>
-extern "C" {
-#include <mach/mach.h>
-}
-
-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)
- {
- wxLogDebug(wxT("Mach port was invalidated, but process hasn't terminated!"));
- return;
- }
- if((rc != -1) && WIFEXITED(status))
- proc_data->exitcode = WEXITSTATUS(status);
- else
- proc_data->exitcode = -1;
- wxHandleProcessTermination(proc_data);
-}
-
-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
-
-/////////////////////////////////////////////////////////////////////////////
-// New implementation avoiding mach ports entirely.
-
projects / wxWidgets.git / blobdiff