+#ifdef wxHAS_GENERIC_PROCESS_CALLBACK
+struct wxEndProcessFDIOHandler : public wxFDIOHandler
+{
+ wxEndProcessFDIOHandler(wxEndProcessData *data, int fd)
+ : m_data(data), m_fd(fd)
+ {}
+
+ virtual void OnReadWaiting()
+ { wxFAIL_MSG("this isn't supposed to happen"); }
+ virtual void OnWriteWaiting()
+ { wxFAIL_MSG("this isn't supposed to happen"); }
+
+ virtual void OnExceptionWaiting()
+ {
+ int pid = (m_data->pid > 0) ? m_data->pid : -(m_data->pid);
+ int status = 0;
+
+ // has the process really terminated?
+ int rc = waitpid(pid, &status, WNOHANG);
+ if ( rc == 0 )
+ {
+ // This can only happen if the child application closes our dummy
+ // pipe that is used to monitor its lifetime; in that case, our
+ // best bet is to pretend the process did terminate, because
+ // otherwise wxExecute() would hang indefinitely
+ // (OnExceptionWaiting() won't be called again, the descriptor
+ // is closed now).
+ wxLogDebug("Child process (PID %i) still alive, even though notification was received that it terminated.", pid);
+ }
+ else if ( rc == -1 )
+ {
+ // As above, if waitpid() fails, the best we can do is to log the
+ // error and pretend the child terminated:
+ wxLogSysError(_("Failed to check child process' status"));
+ }
+
+ // set exit code to -1 if something bad happened
+ m_data->exitcode = (rc > 0 && WIFEXITED(status))
+ ? WEXITSTATUS(status)
+ : -1;
+
+ wxLogTrace("exec",
+ "Child process (PID %i) terminated with exit code %i",
+ pid, m_data->exitcode);
+
+ // child exited, end waiting
+ wxFDIODispatcher::Get()->UnregisterFD(m_fd);
+ close(m_fd);
+
+ m_data->fdioHandler = NULL;
+ wxHandleProcessTermination(m_data);
+
+ delete this;
+ }
+
+ wxEndProcessData *m_data;
+ int m_fd;
+};
+
+int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
+{
+ proc_data->fdioHandler = new wxEndProcessFDIOHandler(proc_data, fd);
+ wxFDIODispatcher::Get()->RegisterFD
+ (
+ fd,
+ proc_data->fdioHandler,
+ wxFDIO_EXCEPTION
+ );
+ return fd; // unused, but return something unique for the tag
+}
+#endif // wxHAS_GENERIC_PROCESS_CALLBACK
+
projects / wxWidgets.git / blobdiff