[libc][posix] create 'posix' folder and move related files into it

1 files changed, 0 insertions, 340 deletions

diff --git a/components/libc/pthreads/pthread_rwlock.c b/components/libc/pthreads/pthread_rwlock.c
deleted file mode 100644
index 1c2fe19f5f..0000000000
--- a/components/libc/pthreads/pthread_rwlock.c
+++ /dev/null
@@ -1,340 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2010-10-26     Bernard      the first version
- */
-
-#include <pthread.h>
-
-int pthread_rwlockattr_init(pthread_rwlockattr_t *attr)
-{
-    if (!attr)
-        return EINVAL;
-    *attr = PTHREAD_PROCESS_PRIVATE;
-
-    return 0;
-}
-RTM_EXPORT(pthread_rwlockattr_init);
-
-int pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr)
-{
-    if (!attr)
-        return EINVAL;
-
-    return 0;
-}
-RTM_EXPORT(pthread_rwlockattr_destroy);
-
-int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *attr,
-                                  int                        *pshared)
-{
-    if (!attr || !pshared)
-        return EINVAL;
-
-    *pshared = PTHREAD_PROCESS_PRIVATE;
-
-    return 0;
-}
-RTM_EXPORT(pthread_rwlockattr_getpshared);
-
-int pthread_rwlockattr_setpshared(pthread_rwlockattr_t *attr, int pshared)
-{
-    if (!attr || pshared != PTHREAD_PROCESS_PRIVATE)
-        return EINVAL;
-
-    return 0;
-}
-RTM_EXPORT(pthread_rwlockattr_setpshared);
-
-int pthread_rwlock_init(pthread_rwlock_t           *rwlock,
-                        const pthread_rwlockattr_t *attr)
-{
-    if (!rwlock)
-        return EINVAL;
-
-    rwlock->attr = PTHREAD_PROCESS_PRIVATE;
-    pthread_mutex_init(&(rwlock->rw_mutex), NULL);
-    pthread_cond_init(&(rwlock->rw_condreaders), NULL);
-    pthread_cond_init(&(rwlock->rw_condwriters), NULL);
-
-    rwlock->rw_nwaitwriters = 0;
-    rwlock->rw_nwaitreaders = 0;
-    rwlock->rw_refcount = 0;
-
-    return 0;
-}
-RTM_EXPORT(pthread_rwlock_init);
-
-int pthread_rwlock_destroy (pthread_rwlock_t *rwlock)
-{
-    int result;
-
-    if (!rwlock)
-        return EINVAL;
-    if (rwlock->attr == -1)
-        return 0; /* rwlock is not initialized */
-
-    if ( (result = pthread_mutex_lock(&rwlock->rw_mutex)) != 0)
-        return(result);
-
-    if (rwlock->rw_refcount != 0 ||
-        rwlock->rw_nwaitreaders != 0 ||
-        rwlock->rw_nwaitwriters != 0)
-    {
-        result = EBUSY;
-
-        return result;
-    }
-    else
-    {
-        /* check whether busy */
-        result = rt_sem_trytake(&(rwlock->rw_condreaders.sem));
-        if (result == RT_EOK)
-        {
-            result = rt_sem_trytake(&(rwlock->rw_condwriters.sem));
-            if (result == RT_EOK)
-            {
-                rt_sem_release(&(rwlock->rw_condreaders.sem));
-                rt_sem_release(&(rwlock->rw_condwriters.sem));
-
-                pthread_cond_destroy(&rwlock->rw_condreaders);
-                pthread_cond_destroy(&rwlock->rw_condwriters);
-            }
-            else
-            {
-                rt_sem_release(&(rwlock->rw_condreaders.sem));
-                result = EBUSY;
-            }
-        }
-        else
-            result = EBUSY;
-    }
-
-    pthread_mutex_unlock(&rwlock->rw_mutex);
-    if (result == 0)
-        pthread_mutex_destroy(&rwlock->rw_mutex);
-
-    return result;
-}
-RTM_EXPORT(pthread_rwlock_destroy);
-
-int pthread_rwlock_rdlock(pthread_rwlock_t *rwlock)
-{
-    int result;
-
-    if (!rwlock)
-        return EINVAL;
-    if (rwlock->attr == -1)
-        pthread_rwlock_init(rwlock, NULL);
-
-    if ((result = pthread_mutex_lock(&rwlock->rw_mutex)) != 0)
-        return(result);
-
-    /* give preference to waiting writers */
-    while (rwlock->rw_refcount < 0 || rwlock->rw_nwaitwriters > 0)
-    {
-        rwlock->rw_nwaitreaders++;
-        /* rw_mutex will be released when waiting for rw_condreaders */
-        result = pthread_cond_wait(&rwlock->rw_condreaders, &rwlock->rw_mutex);
-        /* rw_mutex should have been taken again when returned from waiting */
-        rwlock->rw_nwaitreaders--;
-        if (result != 0) /* wait error */
-            break;
-    }
-
-    /* another reader has a read lock */
-    if (result == 0)
-        rwlock->rw_refcount++;
-
-    pthread_mutex_unlock(&rwlock->rw_mutex);
-
-    return (result);
-}
-RTM_EXPORT(pthread_rwlock_rdlock);
-
-int pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock)
-{
-    int result;
-
-    if (!rwlock)
-        return EINVAL;
-    if (rwlock->attr == -1)
-        pthread_rwlock_init(rwlock, NULL);
-
-    if ((result = pthread_mutex_lock(&rwlock->rw_mutex)) != 0)
-        return(result);
-
-    if (rwlock->rw_refcount < 0 || rwlock->rw_nwaitwriters > 0)
-        result = EBUSY;                 /* held by a writer or waiting writers */
-    else
-        rwlock->rw_refcount++;          /* increment count of reader locks */
-
-    pthread_mutex_unlock(&rwlock->rw_mutex);
-
-    return(result);
-}
-RTM_EXPORT(pthread_rwlock_tryrdlock);
-
-int pthread_rwlock_timedrdlock(pthread_rwlock_t      *rwlock,
-                               const struct timespec *abstime)
-{
-    int result;
-
-    if (!rwlock)
-        return EINVAL;
-    if (rwlock->attr == -1)
-        pthread_rwlock_init(rwlock, NULL);
-
-    if ( (result = pthread_mutex_lock(&rwlock->rw_mutex)) != 0)
-        return(result);
-
-    /* give preference to waiting writers */
-    while (rwlock->rw_refcount < 0 || rwlock->rw_nwaitwriters > 0)
-    {
-        rwlock->rw_nwaitreaders++;
-        /* rw_mutex will be released when waiting for rw_condreaders */
-        result = pthread_cond_timedwait(&rwlock->rw_condreaders, &rwlock->rw_mutex, abstime);
-        /* rw_mutex should have been taken again when returned from waiting */
-        rwlock->rw_nwaitreaders--;
-        if (result != 0)
-            break;
-    }
-
-    /* another reader has a read lock */
-    if (result == 0)
-        rwlock->rw_refcount++;
-
-    pthread_mutex_unlock(&rwlock->rw_mutex);
-
-    return (result);
-}
-RTM_EXPORT(pthread_rwlock_timedrdlock);
-
-int pthread_rwlock_timedwrlock(pthread_rwlock_t      *rwlock,
-                               const struct timespec *abstime)
-{
-    int result;
-
-    if (!rwlock)
-        return EINVAL;
-    if (rwlock->attr == -1)
-        pthread_rwlock_init(rwlock, NULL);
-
-    if ((result = pthread_mutex_lock(&rwlock->rw_mutex)) != 0)
-        return(result);
-
-    while (rwlock->rw_refcount != 0)
-    {
-        rwlock->rw_nwaitwriters++;
-        /* rw_mutex will be released when waiting for rw_condwriters */
-        result = pthread_cond_timedwait(&rwlock->rw_condwriters, &rwlock->rw_mutex, abstime);
-        /* rw_mutex should have been taken again when returned from waiting */
-        rwlock->rw_nwaitwriters--;
-
-        if (result != 0)
-            break;
-    }
-
-    if (result == 0)
-        rwlock->rw_refcount = -1;
-
-    pthread_mutex_unlock(&rwlock->rw_mutex);
-
-    return(result);
-}
-RTM_EXPORT(pthread_rwlock_timedwrlock);
-
-int pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock)
-{
-    int result;
-
-    if (!rwlock)
-        return EINVAL;
-    if (rwlock->attr == -1)
-        pthread_rwlock_init(rwlock, NULL);
-
-    if ((result = pthread_mutex_lock(&rwlock->rw_mutex)) != 0)
-        return(result);
-
-    if (rwlock->rw_refcount != 0)
-        result = EBUSY;                 /* held by either writer or reader(s) */
-    else
-        rwlock->rw_refcount = -1;       /* available, indicate a writer has it */
-
-    pthread_mutex_unlock(&rwlock->rw_mutex);
-
-    return(result);
-}
-RTM_EXPORT(pthread_rwlock_trywrlock);
-
-int pthread_rwlock_unlock(pthread_rwlock_t *rwlock)
-{
-    int result;
-
-    if (!rwlock)
-        return EINVAL;
-    if (rwlock->attr == -1)
-        pthread_rwlock_init(rwlock, NULL);
-
-    if ( (result = pthread_mutex_lock(&rwlock->rw_mutex)) != 0)
-        return(result);
-
-    if (rwlock->rw_refcount > 0)
-        rwlock->rw_refcount--;              /* releasing a reader */
-    else if (rwlock->rw_refcount == -1)
-        rwlock->rw_refcount = 0;            /* releasing a writer */
-
-    /* give preference to waiting writers over waiting readers */
-    if (rwlock->rw_nwaitwriters > 0)
-    {
-        if (rwlock->rw_refcount == 0)
-            result = pthread_cond_signal(&rwlock->rw_condwriters);
-    }
-    else if (rwlock->rw_nwaitreaders > 0)
-    {
-        result = pthread_cond_broadcast(&rwlock->rw_condreaders);
-    }
-
-    pthread_mutex_unlock(&rwlock->rw_mutex);
-
-    return(result);
-}
-RTM_EXPORT(pthread_rwlock_unlock);
-
-int pthread_rwlock_wrlock(pthread_rwlock_t *rwlock)
-{
-    int result;
-
-    if (!rwlock)
-        return EINVAL;
-    if (rwlock->attr == -1)
-        pthread_rwlock_init(rwlock, NULL);
-
-    if ((result = pthread_mutex_lock(&rwlock->rw_mutex)) != 0)
-        return(result);
-
-    while (rwlock->rw_refcount != 0)
-    {
-        rwlock->rw_nwaitwriters++;
-        /* rw_mutex will be released when waiting for rw_condwriters */
-        result = pthread_cond_wait(&rwlock->rw_condwriters, &rwlock->rw_mutex);
-        /* rw_mutex should have been taken again when returned from waiting */
-        rwlock->rw_nwaitwriters--;
-
-        if (result != 0)
-            break;
-    }
-
-    if (result == 0)
-        rwlock->rw_refcount = -1;
-
-    pthread_mutex_unlock(&rwlock->rw_mutex);
-
-    return(result);
-}
-RTM_EXPORT(pthread_rwlock_wrlock);
-