support posix

1. posix pthread.h: pthread, pthread_barrier, pthread_cond, pthread_mutex, , pthread_rwlock, pthread_spin, etc
2. posix semaphore.h: sem_*
3. posix mqueue.h: mq_*
4. posix time.h: timer_*
5. to support posix, add tos_barrier, tos_bitmap, tos_rwlock, tos_stopwatch, change name of k_task_t from a char * pointer to a char array.
6. sample, see examples\posix
7. project, see board\TencentOS_tiny_EVB_MX_Plus\KEIL\posix

kernel/core/include/tos_bitmap.h

@@ -0,0 +1,155 @@
+/*----------------------------------------------------------------------------
+ * Tencent is pleased to support the open source community by making TencentOS
+ * available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ * If you have downloaded a copy of the TencentOS binary from Tencent, please
+ * note that the TencentOS binary is licensed under the BSD 3-Clause License.
+ *
+ * If you have downloaded a copy of the TencentOS source code from Tencent,
+ * please note that TencentOS source code is licensed under the BSD 3-Clause
+ * License, except for the third-party components listed below which are
+ * subject to different license terms. Your integration of TencentOS into your
+ * own projects may require compliance with the BSD 3-Clause License, as well
+ * as the other licenses applicable to the third-party components included
+ * within TencentOS.
+ *---------------------------------------------------------------------------*/
+
+#ifndef _TOS_BITMAP_H_
+#define  _TOS_BITMAP_H_
+
+typedef uint32_t                        k_bmtbl_t;
+
+typedef struct k_bitmap_st {
+#if TOS_CFG_OBJECT_VERIFY_EN > 0u
+    knl_obj_t       knl_obj;
+#endif
+
+    uint32_t        bit_ndx_max;
+    uint32_t        bit_max;
+    k_bmtbl_t      *bitmap_tbl;
+} k_bitmap_t;
+
+#define K_BITMAP_SLOT_SIZE              (sizeof(k_bmtbl_t) * 8) /* in bits */
+
+#define K_BITMAP_TBL_SIZE(bit_max)      ((bit_max + K_BITMAP_SLOT_SIZE - 1) / K_BITMAP_SLOT_SIZE)
+
+#define K_BITMAP_NDX(bit)               ((bit) >> 5u)   /* bit / K_BITMAP_SLOT_SIZE */
+
+#define K_BITMAP_BIT(bit)               ((uint32_t)1u << (K_BITMAP_SLOT_SIZE - 1u - ((bit) & (K_BITMAP_SLOT_SIZE - 1u))))
+
+#define TOS_BITMAP_SIZE(bit_max)        (K_BITMAP_TBL_SIZE(bit_max))
+
+/**
+ * @brief Create a bitmap with all bit are set to 0.
+ *
+ * @attention the size of bitmap_tabl can be caculated by the macro TOS_BITMAP_SIZE
+ *
+ * @param[in]   bitmap          pointer to the handler of the bitmap.
+ * @param[in]   bitmap_tbl      bitmap table buffer.
+ * @param[in]   bit_max         maximal bit.
+ *
+ * @return  errcode
+ * @retval  #K_ERR_NONE             return successfully.
+ * @retval  #K_ERR_OBJ_PTR_NULL     bitmap is NULL.
+ */
+__API__ k_err_t     tos_bitmap_create_empty(k_bitmap_t *bitmap, k_bmtbl_t *bitmap_tbl, uint32_t bit_max);
+
+/**
+ * @brief Create a bitmap with all bit are set to 1.
+ *
+ * @attention the size of bitmap_tabl can be caculated by the macro TOS_BITMAP_SIZE
+ *
+ * @param[in]   bitmap          pointer to the handler of the bitmap.
+ * @param[in]   bitmap_tbl      bitmap table buffer.
+ * @param[in]   bit_max         maximal bit.
+ *
+ * @return  errcode
+ * @retval  #K_ERR_NONE             return successfully.
+ * @retval  #K_ERR_OBJ_PTR_NULL     bitmap is NULL.
+ */
+__API__ k_err_t     tos_bitmap_create_full(k_bitmap_t *bitmap, k_bmtbl_t *bitmap_tbl, uint32_t bit_max);
+
+/**
+ * @brief Destroy the bitmap.
+ *
+ * @attention
+ *
+ * @param[in]   bitmap          pointer to the handler of the bitmap.
+ *
+ * @return  errcode
+ * @retval  #K_ERR_NONE             return successfully.
+ * @retval  #K_ERR_OBJ_PTR_NULL     bitmap is NULL.
+ */
+__API__ k_err_t     tos_bitmap_destroy(k_bitmap_t *bitmap);
+
+/**
+ * @brief Set a certain bit of the bitmap to 1.
+ *
+ * @attention
+ *
+ * @param[in]   bitmap          pointer to the handler of the bitmap.
+ * @param[in]   bit             the bit to set.
+ *
+ * @return  errcode
+ * @retval  #K_ERR_NONE             return successfully.
+ * @retval  #K_ERR_BITMAP_EXCEED    bit is larger than the bit_max passed to tos_bitmap_create_*.
+ */
+__API__ k_err_t     tos_bitmap_set(k_bitmap_t *bitmap, uint32_t bit);
+
+/**
+ * @brief Set a certain bit of the bitmap to 0.
+ *
+ * @attention
+ *
+ * @param[in]   bitmap          pointer to the handler of the bitmap.
+ * @param[in]   bit             the bit to set.
+ *
+ * @return  errcode
+ * @retval  #K_ERR_NONE             return successfully.
+ * @retval  #K_ERR_BITMAP_EXCEED    bit is larger than the bit_max passed to tos_bitmap_create_*.
+ */
+__API__ k_err_t     tos_bitmap_reset(k_bitmap_t *bitmap, uint32_t bit);
+
+/**
+ * @brief Test whether a certain bit of the bitmap is 1.
+ *
+ * @attention
+ *
+ * @param[in]   bitmap          pointer to the handler of the bitmap.
+ * @param[in]   bit             the bit to set.
+ *
+ * @return  whether the bit is 1
+ * @retval  #K_TRUE             the certain bit is 1.
+ * @retval  #K_FALSE            the certain bit is not 1(that means is 0).
+ */
+__API__ int         tos_bitmap_is_set(k_bitmap_t *bitmap, uint32_t bit);
+
+/**
+ * @brief Test whether a certain bit of the bitmap is 0.
+ *
+ * @attention
+ *
+ * @param[in]   bitmap          pointer to the handler of the bitmap.
+ * @param[in]   bit             the bit to set.
+ *
+ * @return  whether the bit is 0
+ * @retval  #K_TRUE             the certain bit is 0.
+ * @retval  #K_FALSE            the certain bit is not 0(that means is 1).
+ */
+__API__ int         tos_bitmap_is_reset(k_bitmap_t *bitmap, uint32_t bit);
+
+/**
+ * @brief Get the lowest significant bit of the bitmap.
+ *
+ * @attention The very first bit which is set to 1.
+ *
+ * @param[in]   bitmap          pointer to the handler of the bitmap.
+ * @param[in]   bit             the bit to set.
+ *
+ * @return  the lowest significant bit of the bitmap.
+ */
+__API__ int         tos_bitmap_lsb(k_bitmap_t *bitmap);
+
+#endif /* _TOS_BITMAP_H_ */
+