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pd |
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/*
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* R : A Computer Language for Statistical Data Analysis
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* Copyright (C) 2000, 2001 The R Development Core Team.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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ripley |
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#ifndef R_EXT_EVENTLOOP_H
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#define R_EXT_EVENTLOOP_H
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duncan |
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hornik |
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/* NOTE:
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Needed at least on FreeBSD so that fd_set is defined.
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*/
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#include <sys/types.h>
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ripley |
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#ifdef __cplusplus
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extern "C" {
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#endif
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duncan |
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#define XActivity 1
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#define StdinActivity 2
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typedef void (*InputHandlerProc)(void *userData);
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typedef struct _InputHandler {
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int activity;
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int fileDescriptor;
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InputHandlerProc handler;
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struct _InputHandler *next;
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/* Whether we should be listening to this file descriptor or not. */
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int active;
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/* Data that can be passed to the routine as its only argument.
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This might be a user-level function or closure when we implement
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a callback to R mechanism.
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*/
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void *userData;
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} InputHandler;
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extern InputHandler *initStdinHandler(void);
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extern void consoleInputHandler(unsigned char *buf, int len);
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extern InputHandler *addInputHandler(InputHandler *handlers, int fd, InputHandlerProc handler, int activity);
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extern InputHandler *getInputHandler(InputHandler *handlers, int fd);
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extern int removeInputHandler(InputHandler **handlers, InputHandler *it);
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extern InputHandler *getSelectedHandler(InputHandler *handlers, fd_set *mask);
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pd |
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extern fd_set *R_checkActivity(int usec, int ignore_stdin);
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luke |
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extern fd_set *R_checkActivityEx(int usec, int ignore_stdin, void (*intr)(void));
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pd |
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extern void R_runHandlers(InputHandler *handlers, fd_set *mask);
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duncan |
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luke |
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extern int R_SelectEx(int n, fd_set *readfds, fd_set *writefds,
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fd_set *exceptfds, struct timeval *timeout,
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void (*intr)(void));
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ripley |
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#ifdef __SYSTEM__
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InputHandler *R_InputHandlers;
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#else
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extern InputHandler *R_InputHandlers;
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#endif
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duncan |
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pd |
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extern void (* R_PolledEvents)(void);
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extern int R_wait_usec;
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ripley |
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#ifdef __cplusplus
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}
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duncan |
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#endif
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ripley |
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#endif /* R_EXT_EVENTLOOP_H */
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