/*
* Copyright (c) 2006 Ondrej Palkovsky
* 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.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/** @addtogroup libc
* @{
*/
/** @file
*/
#ifndef LIBC_FIBRIL_H_
#define LIBC_FIBRIL_H_
#include <libarch/fibril.h>
#include <libadt/list.h>
#include <libarch/tls.h>
#ifndef context_set
#define context_set(c, _pc, stack, size, ptls) \
(c)->pc = (sysarg_t) (_pc); \
(c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA; \
(c)->tls = (sysarg_t) (ptls);
#endif /* context_set */
#define FIBRIL_SERIALIZED 1
typedef enum {
FIBRIL_PREEMPT,
FIBRIL_TO_MANAGER,
FIBRIL_FROM_MANAGER,
FIBRIL_FROM_DEAD
} fibril_switch_type_t;
typedef sysarg_t fid_t;
struct fibril {
link_t link;
context_t ctx;
void *stack;
void *arg;
int (*func)(void *);
tcb_t *tcb;
struct fibril *clean_after_me;
int retval;
int flags;
};
typedef struct fibril fibril_t;
extern int context_save(context_t *c);
extern void context_restore(context_t *c) __attribute__ ((noreturn));
extern fid_t fibril_create(int (*func)(void *), void *arg);
extern fibril_t *fibril_setup(void);
extern void fibril_teardown(fibril_t *f);
extern int fibril_switch(fibril_switch_type_t stype);
extern void fibril_add_ready(fid_t fid);
extern void fibril_add_manager(fid_t fid);
extern void fibril_remove_manager(void);
extern fid_t fibril_get_id(void);
extern void fibril_inc_sercount(void);
extern void fibril_dec_sercount(void);
static inline int fibril_yield(void) {
return fibril_switch(FIBRIL_PREEMPT);
}
#endif
/** @}
*/