import RT-Thread@9217865c without bsp, libcpu and components/net

components/libc/posix/pthreads/pthread_tls.c

@@ -0,0 +1,110 @@
+/*
+ * 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>
+#include "pthread_internal.h"
+
+_pthread_key_data_t _thread_keys[PTHREAD_KEY_MAX];
+
+/* initialize key area */
+static int pthread_key_system_init(void)
+{
+    rt_memset(&_thread_keys[0], 0, sizeof(_thread_keys));
+    return 0;
+}
+INIT_COMPONENT_EXPORT(pthread_key_system_init);
+
+void *pthread_getspecific(pthread_key_t key)
+{
+    struct _pthread_data* ptd;
+
+    if (rt_thread_self() == NULL) return NULL;
+
+    /* get pthread data from user data of thread */
+    ptd = (_pthread_data_t *)rt_thread_self()->user_data;
+    RT_ASSERT(ptd != NULL);
+
+    if (ptd->tls == NULL)
+        return NULL;
+
+    if ((key < PTHREAD_KEY_MAX) && (_thread_keys[key].is_used))
+        return ptd->tls[key];
+
+    return NULL;
+}
+RTM_EXPORT(pthread_getspecific);
+
+int pthread_setspecific(pthread_key_t key, const void *value)
+{
+    struct _pthread_data* ptd;
+
+    if (rt_thread_self() == NULL) return EINVAL;
+
+    /* get pthread data from user data of thread */
+    ptd = (_pthread_data_t *)rt_thread_self()->user_data;
+    RT_ASSERT(ptd != NULL);
+
+    /* check tls area */
+    if (ptd->tls == NULL)
+    {
+        ptd->tls = (void**)rt_malloc(sizeof(void*) * PTHREAD_KEY_MAX);
+    }
+
+    if ((key < PTHREAD_KEY_MAX) && _thread_keys[key].is_used)
+    {
+        ptd->tls[key] = (void *)value;
+
+        return 0;
+    }
+
+    return EINVAL;
+}
+RTM_EXPORT(pthread_setspecific);
+
+int pthread_key_create(pthread_key_t *key, void (*destructor)(void*))
+{
+    rt_uint32_t index;
+
+    rt_enter_critical();
+    for (index = 0; index < PTHREAD_KEY_MAX; index ++)
+    {
+        if (_thread_keys[index].is_used == 0)
+        {
+            _thread_keys[index].is_used = 1;
+            _thread_keys[index].destructor = destructor;
+
+            *key = index;
+
+            rt_exit_critical();
+
+            return 0;
+        }
+    }
+
+    rt_exit_critical();
+
+    return EAGAIN;
+}
+RTM_EXPORT(pthread_key_create);
+
+int pthread_key_delete(pthread_key_t key)
+{
+    if (key >= PTHREAD_KEY_MAX)
+        return EINVAL;
+
+    rt_enter_critical();
+    _thread_keys[key].is_used = 0;
+    _thread_keys[key].destructor = 0;
+    rt_exit_critical();
+
+    return 0;
+}
+RTM_EXPORT(pthread_key_delete);
+