* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
* @defgroup los_queue Queue
* @ingroup kernel
*/
#ifndef _LOS_QUEUE_H
#define _LOS_QUEUE_H
#include "los_base.h"
#include "los_list.h"
#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif
#endif
* @ingroup los_queue
* Queue error code: The maximum number of queue resources is configured to 0.
*
* Value: 0x02000600
*
* Solution: Configure the maximum number of queue resources to be greater than 0. If queue modules are not used,
* set the configuration item for the tailoring of the maximum number of queue resources to NO.
*/
#define LOS_ERRNO_QUEUE_MAXNUM_ZERO LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x00)
* @ingroup los_queue
* Queue error code: The queue block memory fails to be initialized.
*
* Value: 0x02000601
*
* Solution: Allocate the queue block bigger memory partition, or decrease the maximum number of queue resources.
*/
#define LOS_ERRNO_QUEUE_NO_MEMORY LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x01)
* @ingroup los_queue
* Queue error code: The memory for queue creation fails to be requested.
*
* Value: 0x02000602
*
* Solution: Allocate more memory for queue creation, or decrease the queue length and the number of nodes
* in the queue to be created.
*/
#define LOS_ERRNO_QUEUE_CREATE_NO_MEMORY LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x02)
* @ingroup los_queue
* Queue error code: The size of the biggest message in the created queue is too big.
*
* Value: 0x02000603
*
* Solution: Change the size of the biggest message in the created queue.
*/
#define LOS_ERRNO_QUEUE_SIZE_TOO_BIG LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x03)
* @ingroup los_queue
* Queue error code: The upper limit of the number of created queues is exceeded.
*
* Value: 0x02000604
*
* Solution: Increase the configured number of resources for queues.
*/
#define LOS_ERRNO_QUEUE_CB_UNAVAILABLE LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x04)
* @ingroup los_queue
* Queue error code: Invalid queue.
*
* Value: 0x02000605
*
* Solution: Ensure that the passed-in queue ID is valid.
*/
#define LOS_ERRNO_QUEUE_NOT_FOUND LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x05)
* @ingroup los_queue
* Queue error code: The task is forbidden to be blocked on a queue when the task is locked.
*
* Value: 0x02000606
*
* Solution: Unlock the task before using a queue.
*/
#define LOS_ERRNO_QUEUE_PEND_IN_LOCK LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x06)
* @ingroup los_queue
* Queue error code: The time set for waiting to processing the queue expires.
*
* Value: 0x02000607
*
* Solution: Check whether the expiry time setting is appropriate.
*/
#define LOS_ERRNO_QUEUE_TIMEOUT LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x07)
* @ingroup los_queue
* Queue error code: The queue that blocks a task cannot be deleted.
*
* Value: 0x02000608
*
* Solution: Enable the task to obtain resources rather than be blocked on the queue.
*/
#define LOS_ERRNO_QUEUE_IN_TSKUSE LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x08)
* @ingroup los_queue
* Queue error code: The queue cannot be written during an interrupt when the time for waiting to
* processing the queue expires.
*
* Value: 0x02000609
*
* Solution: Set the expiry time to the never-waiting mode, or use asynchronous queues.
*/
#define LOS_ERRNO_QUEUE_WRITE_IN_INTERRUPT LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x09)
* @ingroup los_queue
* Queue error code: The queue is not created.
*
* Value: 0x0200060a
*
* Solution: Check whether the passed-in queue handle value is valid.
*/
#define LOS_ERRNO_QUEUE_NOT_CREATE LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x0a)
* @ingroup los_queue
* Queue error code: Queue reading and writing are not synchronous.
*
* Value: 0x0200060b
*
* Solution: Synchronize queue reading with queue writing.
*/
#define LOS_ERRNO_QUEUE_IN_TSKWRITE LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x0b)
* @ingroup los_queue
* Queue error code: Parameters passed in during queue creation are null pointers.
*
* Value: 0x0200060c
*
* Solution: Ensure the passed-in parameters are not null pointers.
*/
#define LOS_ERRNO_QUEUE_CREAT_PTR_NULL LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x0c)
* @ingroup los_queue
* Queue error code: The queue length or message node size passed in during queue creation is 0.
*
* Value: 0x0200060d
*
* Solution: Pass in correct queue length and message node size.
*/
#define LOS_ERRNO_QUEUE_PARA_ISZERO LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x0d)
* @ingroup los_queue
* Queue error code: The handle of the queue is invalid.
*
* Value: 0x0200060e
*
* Solution: Check whether the passed-in queue handle value is valid.
*/
#define LOS_ERRNO_QUEUE_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x0e)
* @ingroup los_queue
* Queue error code: The pointer passed in during queue reading is null.
*
* Value: 0x0200060f
*
* Solution: Check whether the passed-in pointer is null.
*/
#define LOS_ERRNO_QUEUE_READ_PTR_NULL LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x0f)
* @ingroup los_queue
* Queue error code: The buffer size passed in during queue reading is too small or too big.
*
* Value: 0x02000610
*
* Solution: Pass in a correct buffer size between [sizeof(CHAR*), OS_NULL_SHORT - sizeof(UINT32)].
*/
#define LOS_ERRNO_QUEUE_READSIZE_IS_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x10)
* @ingroup los_queue
* Queue error code: The pointer passed in during queue writing is null.
*
* Value: 0x02000612
*
* Solution: Check whether the passed-in pointer is null.
*/
#define LOS_ERRNO_QUEUE_WRITE_PTR_NULL LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x12)
* @ingroup los_queue
* Queue error code: The buffer size passed in during queue writing is 0.
*
* Value: 0x02000613
*
* Solution: Pass in a correct buffer size.
*/
#define LOS_ERRNO_QUEUE_WRITESIZE_ISZERO LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x13)
* @ingroup los_queue
* Queue error code: The buffer size passed in during queue writing is bigger than the queue size.
*
* Value: 0x02000615
*
* Solution: Decrease the buffer size, or use a queue in which nodes are bigger.
*/
#define LOS_ERRNO_QUEUE_WRITE_SIZE_TOO_BIG LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x15)
* @ingroup los_queue
* Queue error code: No free node is available during queue writing.
*
* Value: 0x02000616
*
* Solution: Ensure that free nodes are available before queue writing.
*/
#define LOS_ERRNO_QUEUE_ISFULL LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x16)
* @ingroup los_queue
* Queue error code: The pointer passed in when the queue information is being obtained is null.
*
* Value: 0x02000617
*
* Solution: Check whether the passed-in pointer is null.
*/
#define LOS_ERRNO_QUEUE_PTR_NULL LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x17)
* @ingroup los_queue
* Queue error code: The queue cannot be read during an interrupt
* when the time for waiting to processing the queue expires.
*
* Value: 0x02000618
*
* Solution: Set the expiry time to the never-waiting mode, or use asynchronous queues.
*/
#define LOS_ERRNO_QUEUE_READ_IN_INTERRUPT LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x18)
* @ingroup los_queue
* Queue error code: The handle of the queue passed-in when the memory for the queue is being freed is invalid.
*
* Value: 0x02000619
*
* Solution: Check whether the passed-in queue handle value is valid.
*/
#define LOS_ERRNO_QUEUE_MAIL_HANDLE_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x19)
* @ingroup los_queue
* Queue error code: The pointer to the memory to be freed is null.
*
* Value: 0x0200061a
*
* Solution: Check whether the passed-in pointer is null.
*/
#define LOS_ERRNO_QUEUE_MAIL_PTR_INVALID LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x1a)
* @ingroup los_queue
* Queue error code: The memory for the queue fails to be freed.
*
* Value: 0x0200061b
*
* Solution: Pass in correct input parameters.
*/
#define LOS_ERRNO_QUEUE_MAIL_FREE_ERROR LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x1b)
* @ingroup los_queue
* Queue error code: No resource is in the queue that is being read when the
* time for waiting to processing the queue expires.
*
* Value: 0x0200061d
*
* Solution: Ensure that the queue contains messages when it is being read.
*/
#define LOS_ERRNO_QUEUE_ISEMPTY LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x1d)
* @ingroup los_queue
* Queue error code: The buffer size passed in during queue reading is smaller than the queue size.
*
* Value: 0x0200061f
*
* Solution: Increase the buffer size, or use a queue in which nodes are smaller.
*/
#define LOS_ERRNO_QUEUE_READ_SIZE_TOO_SMALL LOS_ERRNO_OS_ERROR(LOS_MOD_QUE, 0x1f)
* @ingroup los_queue
* Structure of the block for queue information query
*/
typedef struct tagQueueInfo {
UINT32 uwQueueID;
UINT16 usQueueLen;
UINT16 usQueueSize;
UINT16 usQueueHead;
UINT16 usQueueTail;
UINT16 usWritableCnt;
UINT16 usReadableCnt;
UINT64 uwWaitReadTask;
UINT64 uwWaitWriteTask;
UINT64 uwWaitMemTask;
} QUEUE_INFO_S;
* @ingroup los_queue
* @brief Create a message queue.
*
* @par Description:
* This API is used to create a message queue.
* @attention
* <ul>
* <li>There are LOSCFG_BASE_IPC_QUEUE_LIMIT queues available, change it's value when necessary.</li>
* </ul>
* @param queueName [IN] Message queue name. Reserved parameter, not used for now.
* @param len [IN] Queue length. The value range is [1,0xffff].
* @param queueID [OUT] ID of the queue control structure that is successfully created.
* @param flags [IN] Queue mode. Reserved parameter, not used for now.
* @param maxMsgSize [IN] Node size. The value range is [1,0xffff-4].
*
* @retval #LOS_OK The message queue is successfully created.
* @retval #LOS_ERRNO_QUEUE_CB_UNAVAILABLE The upper limit of the number of created queues is exceeded.
* @retval #LOS_ERRNO_QUEUE_CREATE_NO_MEMORY Insufficient memory for queue creation.
* @retval #LOS_ERRNO_QUEUE_CREAT_PTR_NULL Null pointer, queueID is NULL.
* @retval #LOS_ERRNO_QUEUE_PARA_ISZERO The queue length or message node size passed in during queue
* creation is 0.
* @retval #LOS_ERRNO_QUEUE_SIZE_TOO_BIG The parameter usMaxMsgSize is larger than 0xffff - 4.
* @par Dependency:
* <ul><li>los_queue.h: the header file that contains the API declaration.</li></ul>
* @see LOS_QueueDelete
*/
extern UINT32 LOS_QueueCreate(CHAR *queueName,
UINT16 len,
UINT32 *queueID,
UINT32 flags,
UINT16 maxMsgSize);
* @ingroup los_queue
* @brief Read a queue.
*
* @par Description:
* This API is used to read data in a specified queue, and store the obtained data to the address specified
* by bufferAddr. The address and the size of the data to be read are defined by users.
* @attention
* <ul>
* <li>The specific queue should be created firstly.</li>
* <li>Queue reading adopts the fist in first out (FIFO) mode. The data that is first stored in the queue is read
* first.</li>
* <li>bufferAddr stores the obtained data.</li>
* <li>Do not read or write a queue in unblocking modes such as an interrupt.</li>
* <li>This API cannot be called before the Huawei LiteOS is initialized.</li>
* <li>The argument timeout is a relative time.</li>
* <li>Do not call this API in software timer callback. </li>
* </ul>
*
* @param queueID [IN] Queue ID created by LOS_QueueCreate. The value range is
* [1,LOSCFG_BASE_IPC_QUEUE_LIMIT].
* @param bufferAddr [OUT] Starting address that stores the obtained data. The starting address must not be
* null.
* @param bufferSize [IN/OUT] Where to maintain the buffer wanted-size before read, and the real-size after read.
* @param timeout [IN] Expiry time. The value range is [0,LOS_WAIT_FOREVER](unit: Tick).
*
* @retval #LOS_OK The queue is successfully read.
* @retval #LOS_ERRNO_QUEUE_INVALID The handle of the queue that is being read is invalid.
* @retval #LOS_ERRNO_QUEUE_READ_PTR_NULL The pointer passed in during queue reading is null.
* @retval #LOS_ERRNO_QUEUE_READSIZE_IS_INVALID The buffer size passed in during queue reading is invalid.
* @retval #LOS_ERRNO_QUEUE_READ_IN_INTERRUPT The queue cannot be read during an interrupt when the time for
* waiting to processing the queue expires.
* @retval #LOS_ERRNO_QUEUE_NOT_CREATE The queue to be read is not created.
* @retval #LOS_ERRNO_QUEUE_ISEMPTY No resource is in the queue that is being read when the time for
* waiting to processing the queue expires.
* @retval #LOS_ERRNO_QUEUE_PEND_IN_LOCK The task is forbidden to be blocked on a queue when the task is
* locked.
* @retval #LOS_ERRNO_QUEUE_TIMEOUT The time set for waiting to processing the queue expires.
* @retval #LOS_ERRNO_QUEUE_READ_SIZE_TOO_SMALL The buffer size passed in during queue reading is less than
* the queue size.
* @par Dependency:
* <ul><li>los_queue.h: the header file that contains the API declaration.</li></ul>
* @see LOS_QueueWriteCopy | LOS_QueueCreate
*/
extern UINT32 LOS_QueueReadCopy(UINT32 queueID,
VOID *bufferAddr,
UINT32 *bufferSize,
UINT32 timeout);
* @ingroup los_queue
* @brief Write data into a queue.
*
* @par Description:
* This API is used to write the data of the size specified by bufferSize and stored at the address specified by
* bufferAddr into a queue.
* @attention
* <ul>
* <li>The specific queue should be created firstly.</li>
* <li>Do not read or write a queue in unblocking modes such as interrupt.</li>
* <li>This API cannot be called before the Huawei LiteOS is initialized.</li>
* <li>The data to be written is of the size specified by bufferSize and is stored at the address specified by
* bufferAddr.</li>
* <li>The argument timeout is a relative time.</li>
* <li>Do not call this API in software timer callback. </li>
* </ul>
*
* @param queueID [IN] Queue ID created by LOS_QueueCreate. The value range is
* [1,LOSCFG_BASE_IPC_QUEUE_LIMIT].
* @param bufferAddr [IN] Starting address that stores the data to be written.The starting address must
* not be null.
* @param bufferSize [IN] Passed-in buffer size. The value range is [1,USHRT_MAX - sizeof(UINT32)].
* @param timeout [IN] Expiry time. The value range is [0,LOS_WAIT_FOREVER](unit: Tick).
*
* @retval #LOS_OK The data is successfully written into the queue.
* @retval #LOS_ERRNO_QUEUE_INVALID The queue handle passed in during queue writing is invalid.
* @retval #LOS_ERRNO_QUEUE_WRITE_PTR_NULL The pointer passed in during queue writing is null.
* @retval #LOS_ERRNO_QUEUE_WRITESIZE_ISZERO The buffer size passed in during queue writing is 0.
* @retval #LOS_ERRNO_QUEUE_WRITE_IN_INTERRUPT The queue cannot be written during an interrupt when the time
* for waiting to processing the queue expires.
* @retval #LOS_ERRNO_QUEUE_NOT_CREATE The queue into which the data is written is not created.
* @retval #LOS_ERRNO_QUEUE_WRITE_SIZE_TOO_BIG The buffer size passed in during queue writing is bigger than
* the queue size.
* @retval #LOS_ERRNO_QUEUE_ISFULL No free node is available during queue writing.
* @retval #LOS_ERRNO_QUEUE_PEND_IN_LOCK The task is forbidden to be blocked on a queue when
* the task is locked.
* @retval #LOS_ERRNO_QUEUE_TIMEOUT The time set for waiting to processing the queue expires.
* @par Dependency:
* <ul><li>los_queue.h: the header file that contains the API declaration.</li></ul>
* @see LOS_QueueReadCopy | LOS_QueueCreate
*/
extern UINT32 LOS_QueueWriteCopy(UINT32 queueID,
VOID *bufferAddr,
UINT32 bufferSize,
UINT32 timeout);
* @ingroup los_queue
* @brief Read a queue.
*
* @par Description:
* This API is used to read the address of data in a specified queue, and store it to the address specified by
* bufferAddr.
* @attention
* <ul>
* <li>The specific queue should be created firstly.</li>
* <li>Queue reading adopts the fist in first out (FIFO) mode. The data that is first stored in the queue is
* read first.</li>
* <li>bufferAddr stores the obtained data address.</li>
* <li>Do not read or write a queue in unblocking modes such as an interrupt.</li>
* <li>This API cannot be called before the Huawei LiteOS is initialized.</li>
* <li>The argument timeout is a relative time.</li>
* <li>The bufferSize is not really used in LOS_QueueRead, because the interface is only used to
* obtain the address of data.</li>
* <li>The buffer which the bufferAddr pointing to must be greater than or equal to 4 bytes.</li>
* <li>Do not call this API in software timer callback. </li>
* </ul>
*
* @param queueID [IN] Queue ID created by LOS_QueueCreate. The value range is
* [1,LOSCFG_BASE_IPC_QUEUE_LIMIT].
* @param bufferAddr [OUT] Starting address that stores the obtained data. The starting address must
* not be null.
* @param bufferSize [IN] Passed-in buffer size,The value range is
* [sizeof(CHAR*),OS_NULL_SHORT - sizeof(UINT32)].
* @param timeout [IN] Expiry time. The value range is [0,LOS_WAIT_FOREVER](unit: Tick).
*
* @retval #LOS_OK The queue is successfully read.
* @retval #LOS_ERRNO_QUEUE_INVALID The handle of the queue that is being read is invalid.
* @retval #LOS_ERRNO_QUEUE_READ_PTR_NULL The pointer passed in during queue reading is null.
* @retval #LOS_ERRNO_QUEUE_READSIZE_IS_INVALID The buffer size passed in during queue reading is invalid.
* @retval #LOS_ERRNO_QUEUE_READ_IN_INTERRUPT The queue cannot be read during an interrupt when the time for
* waiting to processing the queue expires.
* @retval #LOS_ERRNO_QUEUE_NOT_CREATE The queue to be read is not created.
* @retval #LOS_ERRNO_QUEUE_ISEMPTY No resource is in the queue that is being read when the time for
* waiting to processing the queue expires.
* @retval #LOS_ERRNO_QUEUE_PEND_IN_LOCK The task is forbidden to be blocked on a queue when the task is
* locked.
* @retval #LOS_ERRNO_QUEUE_TIMEOUT The time set for waiting to processing the queue expires.
* @par Dependency:
* <ul><li>los_queue.h: The header file that contains the API declaration.</li></ul>
* @see LOS_QueueWrite | LOS_QueueCreate
*/
extern UINT32 LOS_QueueRead(UINT32 queueID,
VOID *bufferAddr,
UINT32 bufferSize,
UINT32 timeout);
* @ingroup los_queue
* @brief Write data into a queue.
*
* @par Description:
* This API is used to write the address of data specified by bufferAddr into a queue.
* @attention
* <ul>
* <li>The specific queue should be created firstly.</li>
* <li>Do not read or write a queue in unblocking modes such as an interrupt.</li>
* <li>This API cannot be called before the Huawei LiteOS is initialized.</li>
* <li>The address of the data of the size specified by bufferSize and stored at the address specified by
* bufferAddr is to be written.</li>
* <li>The argument timeout is a relative time.</li>
* <li>The bufferSize is not really used in LOS_QueueWrite, because the interface is only used to write the address
* of data specified by bufferAddr into a queue.</li>
* <li>Do not call this API in software timer callback. </li>
* </ul>
*
* @param queueID [IN] Queue ID created by LOS_QueueCreate. The value range is
* [1,LOSCFG_BASE_IPC_QUEUE_LIMIT].
* @param bufferAddr [IN] Starting address that stores the data to be written. The starting address
* must not be null.
* @param bufferSize [IN] This parameter is not in use temporarily.
* @param timeout [IN] Expiry time. The value range is [0,LOS_WAIT_FOREVER](unit: Tick).
*
* @retval #LOS_OK The data is successfully written into the queue.
* @retval #LOS_ERRNO_QUEUE_INVALID The queue handle passed in during queue writing is invalid.
* @retval #LOS_ERRNO_QUEUE_WRITE_PTR_NULL The pointer passed in during queue writing is null.
* @retval #LOS_ERRNO_QUEUE_WRITESIZE_ISZERO The buffer size passed in during queue writing is 0.
* @retval #LOS_ERRNO_QUEUE_WRITE_IN_INTERRUPT The queue cannot be written during an interrupt when the time for
* waiting to processing the queue expires.
* @retval #LOS_ERRNO_QUEUE_NOT_CREATE The queue into which the data is written is not created.
* @retval #LOS_ERRNO_QUEUE_WRITE_SIZE_TOO_BIG The buffer size passed in during queue writing is bigger than
* the queue size.
* @retval #LOS_ERRNO_QUEUE_ISFULL No free node is available during queue writing.
* @retval #LOS_ERRNO_QUEUE_PEND_IN_LOCK The task is forbidden to be blocked on a queue when the task is
* locked.
* @retval #LOS_ERRNO_QUEUE_TIMEOUT The time set for waiting to processing the queue expires.
* @par Dependency:
* <ul><li>los_queue.h: The header file that contains the API declaration.</li></ul>
* @see LOS_QueueRead | LOS_QueueCreate
*/
extern UINT32 LOS_QueueWrite(UINT32 queueID,
VOID *bufferAddr,
UINT32 bufferSize,
UINT32 timeout);
* @ingroup los_queue
* @brief Write data into a queue header.
*
* @par Description:
* This API is used to write the data of the size specified by bufferSize and stored at the address specified by
* bufferAddr into a queue header.
* @attention
* <ul>
* <li>Do not read or write a queue in unblocking modes such as an interrupt.</li>
* <li>This API cannot be called before the Huawei LiteOS is initialized.</li>
* <li>The address of the data of the size specified by bufferSize and stored at the address specified by
* bufferAddr is to be written.</li>
* <li>The argument timeout is a relative time.</li>
* <li>LOS_QueueRead and LOS_QueueWriteHead are a set of interfaces, and the two groups of interfaces need to
* be used.<li>
* <li>Do not call this API in software timer callback. </li>
* </ul>
*
* @param queueID [IN] Queue ID created by LOS_QueueCreate. The value range is
* [1,LOSCFG_BASE_IPC_QUEUE_LIMIT].
* @param bufferAddr [OUT] Starting address that stores the data to be written. The starting address
* must not be null.
* @param bufferSize [IN] This parameter is not in use temporarily.
* @param timeout [IN] Expiry time. The value range is [0,LOS_WAIT_FOREVER](unit: Tick).
*
* @retval #LOS_OK The data is successfully written into the queue.
* @retval #LOS_ERRNO_QUEUE_INVALID The queue handle passed in during queue writing is invalid.
* @retval #LOS_ERRNO_QUEUE_WRITE_PTR_NULL The pointer passed in during queue writing is null.
* @retval #LOS_ERRNO_QUEUE_WRITESIZE_ISZERO The buffer size passed in during queue writing is 0.
* @retval #LOS_ERRNO_QUEUE_WRITE_IN_INTERRUPT The queue cannot be written during an interrupt when the time for
* waiting to processing the queue expires. waiting to processing the queue expires.
* @retval #LOS_ERRNO_QUEUE_NOT_CREATE The queue into which the data is written is not created.
* @retval #LOS_ERRNO_QUEUE_WRITE_SIZE_TOO_BIG The buffer size passed in during queue writing is bigger than
* the queue size.
* @retval #LOS_ERRNO_QUEUE_ISFULL No free node is available during queue writing.
* @retval #LOS_ERRNO_QUEUE_PEND_IN_LOCK The task is forbidden to be blocked on a queue when the task is
* locked.
* @retval #LOS_ERRNO_QUEUE_TIMEOUT The time set for waiting to processing the queue expires.
* @par Dependency:
* <ul><li>los_queue.h: The header file that contains the API declaration.</li></ul>
* @see LOS_QueueRead | LOS_QueueCreate
*/
extern UINT32 LOS_QueueWriteHead(UINT32 queueID,
VOID *bufferAddr,
UINT32 bufferSize,
UINT32 timeout);
* @ingroup los_queue
* @brief Write data into a queue header.
*
* @par Description:
* This API is used to write the data of the size specified by bufferSize and stored at the address specified by
* bufferAddr into a queue header.
* @attention
* <ul>
* <li>Do not read or write a queue in unblocking modes such as an interrupt.</li>
* <li>This API cannot be called before the Huawei LiteOS is initialized.</li>
* <li>The address of the data of the size specified by bufferSize and stored at the address specified by
* bufferAddr is to be written.</li>
* <li>The argument timeout is a relative time.</li>
* <li>LOS_QueueRead and LOS_QueueWriteHead are a set of interfaces, and the two groups of interfaces need to be
* used.<li>
* <li>Do not call this API in software timer callback. </li>
* </ul>
*
* @param queueID [IN] Queue ID created by LOS_QueueCreate. The value range is
* [1,LOSCFG_BASE_IPC_QUEUE_LIMIT].
* @param bufferAddr [OUT] Starting address that stores the data to be written.
* The starting address must not be null.
* @param bufferSize [IN] Passed-in buffer size, which must not be 0. The value range is [1,0xffffffff].
* @param timeout [IN] Expiry time. The value range is [0,LOS_WAIT_FOREVER](unit: Tick).
*
* @retval #LOS_OK The data is successfully written into the queue.
* @retval #LOS_ERRNO_QUEUE_INVALID The queue handle passed in during queue writing is invalid.
* @retval #LOS_ERRNO_QUEUE_WRITE_PTR_NULL The pointer passed in during queue writing is null.
* @retval #LOS_ERRNO_QUEUE_WRITESIZE_ISZERO The buffer size passed in during queue writing is 0.
* @retval #LOS_ERRNO_QUEUE_WRITE_IN_INTERRUPT The queue cannot be written during an interrupt when the time for
* waiting to processing the queue expires.
* @retval #LOS_ERRNO_QUEUE_NOT_CREATE The queue into which the data is written is not created.
* @retval #LOS_ERRNO_QUEUE_WRITE_SIZE_TOO_BIG The buffer size passed in during queue writing is bigger than
* the queue size.
* @retval #LOS_ERRNO_QUEUE_ISFULL No free node is available during queue writing.
* @retval #LOS_ERRNO_QUEUE_PEND_IN_LOCK The task is forbidden to be blocked on a queue when the task is
* locked.
* @retval #LOS_ERRNO_QUEUE_TIMEOUT The time set for waiting to processing the queue expires.
* @par Dependency:
* <ul><li>los_queue.h: The header file that contains the API declaration.</li></ul>
* @see LOS_QueueWrite | LOS_QueueWriteHead
*/
extern UINT32 LOS_QueueWriteHeadCopy(UINT32 queueID,
VOID *bufferAddr,
UINT32 bufferSize,
UINT32 timeout);
* @ingroup los_queue
* @brief Delete a queue.
*
* @par Description:
* This API is used to delete a queue.
* @attention
* <ul>
* <li>This API cannot be used to delete a queue that is not created.</li>
* <li>A synchronous queue fails to be deleted if any tasks are blocked on it, or some queues are being read or
* written.</li>
* </ul>
*
* @param queueID [IN] Queue ID created by LOS_QueueCreate. The value range is
* [1,LOSCFG_BASE_IPC_QUEUE_LIMIT].
*
* @retval #LOS_OK The queue is successfully deleted.
* @retval #LOS_ERRNO_QUEUE_NOT_FOUND The queue cannot be found.
* @retval #LOS_ERRNO_QUEUE_NOT_CREATE The queue handle passed in when the queue is being deleted is
* incorrect.
* @retval #LOS_ERRNO_QUEUE_IN_TSKUSE The queue that blocks a task cannot be deleted.
* @retval #LOS_ERRNO_QUEUE_IN_TSKWRITE Queue reading and writing are not synchronous.
* @par Dependency:
* <ul><li>los_queue.h: the header file that contains the API declaration.</li></ul>
* @see LOS_QueueCreate | LOS_QueueCreate
*/
extern UINT32 LOS_QueueDelete(UINT32 queueID);
* @ingroup los_queue
* @brief Obtain queue information.
*
* @par Description:
* This API is used to obtain queue information.
* @attention
* <ul>
* <li>The specific queue should be created firstly.</li>
* </ul>
* @param queueID [IN] Queue ID created by LOS_QueueCreate. The value range is
* [1,LOSCFG_BASE_IPC_QUEUE_LIMIT].
* @param queueInfo [OUT] The queue information to be read must not be null.
*
* @retval #LOS_OK The queue information is successfully obtained.
* @retval #LOS_ERRNO_QUEUE_PTR_NULL The pointer to the queue information to be obtained is null.
* @retval #LOS_ERRNO_QUEUE_INVALID The handle of the queue that is being read is invalid.
* @retval #LOS_ERRNO_QUEUE_NOT_CREATE The queue in which the information to be obtained is stored is
* not created.
*
* @par Dependency:
* <ul><li>los_queue.h: the header file that contains the API declaration.</li></ul>
* @see LOS_QueueCreate
*/
extern UINT32 LOS_QueueInfoGet(UINT32 queueID, QUEUE_INFO_S *queueInfo);
#ifdef __cplusplus
#if __cplusplus
}
#endif
#endif
#endif
