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/*
* chopstx.h - Threads and only threads.
*
* Copyright (C) 2013 Flying Stone Technology
* Author: NIIBE Yutaka <gniibe@fsij.org>
*
* This file is a part of Chopstx, a thread library for embedded.
*
* Chopstx 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, either version 3 of the License, or
* (at your option) any later version.
*
* Chopstx is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As additional permission under GNU GPL version 3 section 7, you may
* distribute non-source form of the Program without the copy of the
* GNU GPL normally required by section 4, provided you inform the
* receipents of GNU GPL by a written offer.
*
*/
typedef uint32_t chopstx_t;
/* NOTE: This signature is different to PTHREAD's one. */
chopstx_t
chopstx_create (uint8_t prio, uint32_t stack_addr, size_t stack_size,
void *(thread_entry) (void *), void *);
void chopstx_usec_wait (uint32_t useconds);
struct chx_spinlock {
/* nothing for uniprocessor. */
};
typedef uint8_t chopstx_prio_t;
typedef struct chx_mtx {
struct {
struct chx_thread *next, *prev;
} q;
struct chx_spinlock lock;
struct chx_thread *owner;
struct chx_mtx *list;
} chopstx_mutex_t;
/* NOTE: This signature is different to PTHREAD's one. */
void chopstx_mutex_init (chopstx_mutex_t *mutex);
void chopstx_mutex_lock (chopstx_mutex_t *mutex);
void chopstx_mutex_unlock (chopstx_mutex_t *mutex);
typedef struct chx_cond {
struct {
struct chx_thread *next, *prev;
} q;
struct chx_spinlock lock;
} chopstx_cond_t;
/* NOTE: This signature is different to PTHREAD's one. */
void chopstx_cond_init (chopstx_cond_t *cond);
void chopstx_cond_wait (chopstx_cond_t *cond, chopstx_mutex_t *mutex);
void chopstx_cond_signal (chopstx_cond_t *cond);
void chopstx_cond_broadcast (chopstx_cond_t *cond);
typedef struct chx_intr {
struct chx_intr *next;
struct chx_spinlock lock;
struct chx_thread *tp;
uint32_t ready;
uint8_t irq_num;
} chopstx_intr_t;
void chopstx_claim_irq (chopstx_intr_t *intr, uint8_t irq_num);
void chopstx_release_irq (chopstx_intr_t *intr);
void chopstx_intr_wait (chopstx_intr_t *intr);
/*
* Library provides default implementation as weak reference.
* User can replace it.
*/
void chx_fatal (uint32_t err_code) __attribute__((__noreturn__));
void chopstx_join (chopstx_t, void **);
void chopstx_exit (void *retval) __attribute__((__noreturn__));
enum {
CHOPSTX_ERR_NONE = 0,
CHOPSTX_ERR_THREAD_CREATE,
CHOPSTX_ERR_JOIN,
};
enum {
CHOPSTX_EXIT_SUCCESS = 0,
CHOPSTX_EXIT_CANCELED = 256,
CHOPSTX_EXIT_CANCELED_IN_SYNC = 257,
};
void chopstx_cancel (chopstx_t thd);
void chopstx_testcancel (void);
struct chx_cleanup {
struct chx_cleanup *next;
void (*routine) (void *);
void *arg;
};
/* NOTE: This signature is different to PTHREAD's one. */
void chopstx_cleanup_push (struct chx_cleanup *clp);
void chopstx_cleanup_pop (int execute);
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