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/*
* Creation Date: <2000/08/26 16:23:33 samuel>
* Time-stamp: <2001/03/10 23:44:17 samuel>
*
* <session.h>
*
* Support of fast save/restore session
*
* Copyright (C) 2000 Samuel Rydh (samuel@ibrium.se)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation
*
*/
#ifndef _H_SESSION
#define _H_SESSION
enum { kStaticChunk=0, kDynamicChunk }; /* for add_session_save_proc */
typedef int (*session_save_fp)( void );
typedef int (*session_prepare_fp)( void );
extern void session_init( void );
extern void session_cleanup( void );
extern int save_session_now( void );
extern void schedule_save_session( int usecs );
extern void session_save_proc( session_save_fp, session_prepare_fp, int dynamic_data );
extern int read_session_data( char *type, int id, char *ptr, size_t size );
extern void align_session_data( int boundary );
extern int write_session_data( char *type, int id, char *ptr, ssize_t size );
extern int get_session_data_size( char *type, int id );
extern int get_session_data_fd( char *type, int id, int *fd, off_t *offs, ssize_t *size );
extern ulong calc_str_checksum( char *str );
extern ulong calc_checksum( char *ptr, int size );
extern int loading_session( void );
extern void session_is_loaded( void );
extern void session_failure( char *err ) __attribute__ ((__noreturn__));
#endif /* _H_SESSION */
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