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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _FUTEX_SYNCHRO_H
#define _FUTEX_SYNCHRO_H
#ifndef HAVE_FUTEX
#error "HAVE_FUTEX not defined"
#endif
#define FUTEX_WAIT_INFINITE (0)
typedef struct futex_mutex_t futex_mutex_t;
struct futex_mutex_t
{
volatile int value;
};
typedef struct futex_cond_t futex_cond_t;
struct futex_cond_t
{
volatile int value;
};
#if __cplusplus
extern "C" {
#endif
void futex_mutex_init(futex_mutex_t *m);
int futex_mutex_lock(futex_mutex_t *m, unsigned msec);
void futex_mutex_unlock(futex_mutex_t *m);
int futex_mutex_trylock(futex_mutex_t *m);
void futex_cond_init(futex_cond_t *c);
int futex_cond_wait(futex_cond_t *c, futex_mutex_t *m, unsigned msec);
void futex_cond_signal(futex_cond_t *c);
void futex_cond_broadcast(futex_cond_t *c);
#if __cplusplus
} // extern "C"
#endif
#endif // _FUTEX_SYNCHRO_H
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