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/*
* Copyright © 2000 The author.
* The author prefers this code not be used for military purposes.
*
*
* Author: Thomas Radke <tradke@aei-potsdam.mpg.de>
* Tuesday, September 12, 2000
*
* Purpose: The public header file for the Stream Virtual File Driver.
*
* Modifications:
* Thomas Radke, Thursday, October 26, 2000
* Added support for Windows.
*
*/
#ifndef H5FDstream_H
#define H5FDstream_H
#ifdef H5_HAVE_STREAM
# define H5FD_STREAM (H5FD_stream_init())
#else
# define H5FD_STREAM (-1)
#endif /*H5_HAVE_STREAM */
#ifdef H5_HAVE_STREAM
/* check what sockets type we have (Unix or Windows sockets)
Note that only MS compilers require to use Windows sockets
but gcc under Windows does not. */
#if ! defined(H5_HAVE_WINSOCK_H) || defined(__GNUC__)
#define H5FD_STREAM_HAVE_UNIX_SOCKETS 1
#endif
/* define the data type for socket descriptors
and the constant indicating an invalid descriptor */
#ifdef H5FD_STREAM_HAVE_UNIX_SOCKETS
#define H5FD_STREAM_SOCKET_TYPE int
#define H5FD_STREAM_INVALID_SOCKET -1
#else
#include <winsock.h>
#define H5FD_STREAM_SOCKET_TYPE SOCKET
#define H5FD_STREAM_INVALID_SOCKET INVALID_SOCKET
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* prototype for read broadcast callback routine */
typedef int (*H5FD_stream_broadcast_t) (unsigned char **file,
haddr_t *len,
void *arg);
/* driver-specific file access properties */
typedef struct H5FD_stream_fapl_t
{
size_t increment; /* how much to grow memory in reallocs */
H5FD_STREAM_SOCKET_TYPE socket; /* externally provided socket descriptor*/
hbool_t do_socket_io; /* do I/O on socket */
int backlog; /* backlog argument for listen call */
H5FD_stream_broadcast_t broadcast_fn; /* READ broadcast callback */
void *broadcast_arg; /* READ broadcast callback user argument*/
unsigned int maxhunt; /* how many more ports to try to bind to*/
unsigned short int port; /* port a socket was bound/connected to */
} H5FD_stream_fapl_t;
/* prototypes of exported functions */
H5_DLL hid_t H5FD_stream_init (void);
H5_DLL void H5FD_stream_term(void);
H5_DLL herr_t H5Pset_fapl_stream (hid_t fapl_id,
H5FD_stream_fapl_t *fapl);
H5_DLL herr_t H5Pget_fapl_stream (hid_t fapl_id,
H5FD_stream_fapl_t *fapl /*out*/ );
#ifdef __cplusplus
}
#endif
#endif /* H5_HAVE_STREAM */
#endif /* H5FDstream_H */
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