78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
/*
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* Copyright (c) 2022 Meta
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_LIB_POSIX_POSIX_INTERNAL_H_
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#define ZEPHYR_LIB_POSIX_POSIX_INTERNAL_H_
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/*
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* Bit used to mark a pthread_mutex_t as initialized. Initialization status is
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* verified (against internal status) in lock / unlock / destroy functions.
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*/
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#define PTHREAD_MUTEX_MASK_INIT 0x80000000
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struct posix_mutex {
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k_tid_t owner;
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uint16_t lock_count;
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int type;
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_wait_q_t wait_q;
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};
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enum pthread_state {
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/* The thread structure is unallocated and available for reuse. */
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PTHREAD_TERMINATED = 0,
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/* The thread is running and joinable. */
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PTHREAD_JOINABLE = PTHREAD_CREATE_JOINABLE,
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/* The thread is running and detached. */
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PTHREAD_DETACHED = PTHREAD_CREATE_DETACHED,
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/* A joinable thread exited and its return code is available. */
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PTHREAD_EXITED
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};
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struct posix_thread {
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struct k_thread thread;
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/* List of keys that thread has called pthread_setspecific() on */
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sys_slist_t key_list;
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/* Exit status */
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void *retval;
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/* Pthread cancellation */
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int cancel_state;
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int cancel_pending;
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struct k_spinlock cancel_lock;
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/* Pthread State */
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enum pthread_state state;
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pthread_mutex_t state_lock;
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pthread_cond_t state_cond;
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};
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struct posix_thread *to_posix_thread(pthread_t pthread);
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/* get and possibly initialize a posix_mutex */
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struct posix_mutex *to_posix_mutex(pthread_mutex_t *mu);
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/* get a previously initialized posix_mutex */
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struct posix_mutex *get_posix_mutex(pthread_mutex_t mut);
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static inline bool is_pthread_mutex_initialized(pthread_mutex_t mut)
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{
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return (mut & PTHREAD_MUTEX_MASK_INIT) != 0;
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}
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static inline pthread_mutex_t mark_pthread_mutex_initialized(pthread_mutex_t mut)
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{
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return mut | PTHREAD_MUTEX_MASK_INIT;
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}
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static inline pthread_mutex_t mark_pthread_mutex_uninitialized(pthread_mutex_t mut)
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{
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return mut & ~PTHREAD_MUTEX_MASK_INIT;
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}
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#endif
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