diff options
Diffstat (limited to 'include/private/utils/futex_synchro.h')
-rw-r--r-- | include/private/utils/futex_synchro.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/include/private/utils/futex_synchro.h b/include/private/utils/futex_synchro.h new file mode 100644 index 0000000..ac2ab19 --- /dev/null +++ b/include/private/utils/futex_synchro.h @@ -0,0 +1,60 @@ +/* + * 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 + |