Control block used to manage each message queue. More...
#include <coremsg.h>
Collaboration diagram for CORE_message_queue_Control:
Data Fields | |
| Thread_queue_Control | Wait_queue |
| This field is the Waiting Queue used to manage the set of tasks which are blocked waiting to receive a message from this queue. | |
| CORE_message_queue_Attributes | Attributes |
| This element is the set of attributes which define this instance's behavior. | |
| uint32_t | maximum_pending_messages |
| This element is maximum number of messages which may be pending at any given time. | |
| uint32_t | number_of_pending_messages |
| This element is the number of messages which are currently pending. | |
| size_t | maximum_message_size |
| This is the size in bytes of the largest message which may be sent via this queue. | |
| Chain_Control | Pending_messages |
| This chain is the set of pending messages. More... | |
| CORE_message_queue_Buffer * | message_buffers |
| This is the address of the memory allocated for message buffers. More... | |
| Chain_Control | Inactive_messages |
| This chain is the set of inactive messages. More... | |
Detailed Description
Control block used to manage each message queue.
The following defines the control block used to manage each Message Queue.
Field Documentation
◆ Inactive_messages
| Chain_Control CORE_message_queue_Control::Inactive_messages |
This chain is the set of inactive messages.
A message is inactive when it does not contain a pending message.
Referenced by _CORE_message_queue_Allocate_message_buffer(), and _CORE_message_queue_Free_message_buffer().
◆ message_buffers
| CORE_message_queue_Buffer* CORE_message_queue_Control::message_buffers |
This is the address of the memory allocated for message buffers.
It is allocated are part of message queue initialization and freed as part of destroying it.
◆ Pending_messages
| Chain_Control CORE_message_queue_Control::Pending_messages |
This chain is the set of pending messages.
It may be ordered by message priority or in FIFO order.
Referenced by _CORE_message_queue_Get_pending_message().
The documentation for this struct was generated from the following file:
- /mnt/data0/chrisj/rtems/releases/rtems-release.git/4.11.3/ws-rtems/rtems-4.11.3/cpukit/score/include/rtems/score/coremsg.h
