pipes.h

/*
 * Cloud9 Parallel Symbolic Execution Engine
 *
 * Copyright (c) 2011, Dependable Systems Laboratory, EPFL
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Dependable Systems Laboratory, EPFL nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE DEPENDABLE SYSTEMS LABORATORY, EPFL BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * All contributors are listed in CLOUD9-AUTHORS file.
 *
 */

#ifndef PIPES_H_
#define PIPES_H_

#include "buffers.h"

#include "fd.h"

typedef struct {
  file_base_t __bdata;

  stream_buffer_t *buffer;
} pipe_end_t;

struct stat64;

int _close_pipe(pipe_end_t *pipe);
ssize_t _read_pipe(pipe_end_t *pipe, void *buf, size_t count);
ssize_t _write_pipe(pipe_end_t *pipe, const void *buf, size_t count);
int _stat_pipe(pipe_end_t *pipe, struct stat64 *buf);

int _is_blocking_pipe(pipe_end_t *pipe, int event);
int _register_events_pipe(pipe_end_t *pipe, wlist_id_t wlist, int events);
void _deregister_events_pipe(pipe_end_t *pipe, wlist_id_t wlist, int events);

#endif /* PIPES_H_ */